From 08330bf0be8fed443402ffd1664b2ca4d16b6f8e Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 27 Jul 2000 01:04:11 +0000 Subject: Port of RTEMS to the ARM processor family by Eric Valette and Emmanuel Raguet of Canon CRF - Communication Dept. This port includes a basic BSP that is sufficient to link hello world. --- c/src/lib/libbsp/arm/.cvsignore | 13 + c/src/lib/libbsp/arm/Makefile.am | 14 + c/src/lib/libbsp/arm/arm_bare_bsp/.cvsignore | 13 + c/src/lib/libbsp/arm/arm_bare_bsp/Makefile.am | 15 + c/src/lib/libbsp/arm/arm_bare_bsp/bsp_specs | 23 + c/src/lib/libbsp/arm/arm_bare_bsp/configure.in | 43 ++ .../lib/libbsp/arm/arm_bare_bsp/console/.cvsignore | 2 + .../libbsp/arm/arm_bare_bsp/console/Makefile.am | 32 ++ .../lib/libbsp/arm/arm_bare_bsp/include/.cvsignore | 2 + .../libbsp/arm/arm_bare_bsp/include/Makefile.am | 24 + c/src/lib/libbsp/arm/arm_bare_bsp/include/bsp.h | 33 ++ .../libbsp/arm/arm_bare_bsp/include/registers.h | 53 ++ c/src/lib/libbsp/arm/arm_bare_bsp/irq/.cvsignore | 2 + c/src/lib/libbsp/arm/arm_bare_bsp/irq/Makefile.am | 44 ++ .../lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_asm.S | 44 ++ .../lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_init.c | 27 + c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c | 119 +++++ c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h | 168 ++++++ c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore | 2 + .../lib/libbsp/arm/arm_bare_bsp/start/Makefile.am | 33 ++ c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S | 157 ++++++ .../lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore | 2 + .../libbsp/arm/arm_bare_bsp/startup/Makefile.am | 41 ++ .../lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c | 164 ++++++ c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c | 48 ++ c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds | 240 +++++++++ .../lib/libbsp/arm/arm_bare_bsp/wrapup/.cvsignore | 2 + .../lib/libbsp/arm/arm_bare_bsp/wrapup/Makefile.am | 32 ++ c/src/lib/libbsp/arm/configure.in | 28 + c/src/lib/libbsp/arm/shared/.cvsignore | 2 + c/src/lib/libbsp/arm/shared/Makefile.am | 10 + c/src/lib/libbsp/arm/shared/comm/.cvsignore | 2 + c/src/lib/libbsp/arm/shared/comm/Makefile.am | 22 + c/src/lib/libbsp/arm/shared/comm/console.c | 367 +++++++++++++ c/src/lib/libbsp/arm/shared/comm/uart.c | 577 +++++++++++++++++++++ c/src/lib/libbsp/arm/shared/comm/uart.h | 158 ++++++ c/src/lib/libbsp/arm/shared/io/.cvsignore | 2 + c/src/lib/libbsp/arm/shared/io/Makefile.am | 22 + c/src/lib/libbsp/arm/shared/io/bspio.h | 38 ++ c/src/lib/libbsp/arm/shared/io/printk.c | 113 ++++ c/src/lib/libbsp/arm/shared/irq/.cvsignore | 2 + c/src/lib/libbsp/arm/shared/irq/Makefile.am | 14 + c/src/lib/libbsp/arm/shared/irq/irq_asm.S | 109 ++++ c/src/lib/libbsp/arm/shared/irq/irq_init.c | 51 ++ 44 files changed, 2909 insertions(+) create mode 100644 c/src/lib/libbsp/arm/.cvsignore create mode 100644 c/src/lib/libbsp/arm/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/bsp_specs create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/configure.in create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/console/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/console/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/include/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/include/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/include/bsp.h create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/include/registers.h create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_asm.S create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_init.c create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/.cvsignore create mode 100644 c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/Makefile.am create mode 100644 c/src/lib/libbsp/arm/configure.in create mode 100644 c/src/lib/libbsp/arm/shared/.cvsignore create mode 100644 c/src/lib/libbsp/arm/shared/Makefile.am create mode 100644 c/src/lib/libbsp/arm/shared/comm/.cvsignore create mode 100644 c/src/lib/libbsp/arm/shared/comm/Makefile.am create mode 100644 c/src/lib/libbsp/arm/shared/comm/console.c create mode 100644 c/src/lib/libbsp/arm/shared/comm/uart.c create mode 100644 c/src/lib/libbsp/arm/shared/comm/uart.h create mode 100644 c/src/lib/libbsp/arm/shared/io/.cvsignore create mode 100644 c/src/lib/libbsp/arm/shared/io/Makefile.am create mode 100644 c/src/lib/libbsp/arm/shared/io/bspio.h create mode 100644 c/src/lib/libbsp/arm/shared/io/printk.c create mode 100644 c/src/lib/libbsp/arm/shared/irq/.cvsignore create mode 100644 c/src/lib/libbsp/arm/shared/irq/Makefile.am create mode 100644 c/src/lib/libbsp/arm/shared/irq/irq_asm.S create mode 100644 c/src/lib/libbsp/arm/shared/irq/irq_init.c (limited to 'c/src/lib') diff --git a/c/src/lib/libbsp/arm/.cvsignore b/c/src/lib/libbsp/arm/.cvsignore new file mode 100644 index 0000000000..525275c115 --- /dev/null +++ b/c/src/lib/libbsp/arm/.cvsignore @@ -0,0 +1,13 @@ +Makefile +Makefile.in +aclocal.m4 +config.cache +config.guess +config.log +config.status +config.sub +configure +depcomp +install-sh +missing +mkinstalldirs diff --git a/c/src/lib/libbsp/arm/Makefile.am b/c/src/lib/libbsp/arm/Makefile.am new file mode 100644 index 0000000000..4545cb696c --- /dev/null +++ b/c/src/lib/libbsp/arm/Makefile.am @@ -0,0 +1,14 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 +ACLOCAL_AMFLAGS = -I $(RTEMS_TOPdir)/aclocal + +## Descend into the $(RTEMS_BSP_FAMILY) directory +## Currently, the shared directory is not explicitly +## added but it is present in the source tree. +SUBDIRS = shared $(RTEMS_BSP_FAMILY) + +include $(top_srcdir)/../../../../../automake/subdirs.am +include $(top_srcdir)/../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/.cvsignore new file mode 100644 index 0000000000..525275c115 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/.cvsignore @@ -0,0 +1,13 @@ +Makefile +Makefile.in +aclocal.m4 +config.cache +config.guess +config.log +config.status +config.sub +configure +depcomp +install-sh +missing +mkinstalldirs diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/Makefile.am new file mode 100644 index 0000000000..d7ef24e6b8 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/Makefile.am @@ -0,0 +1,15 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 +ACLOCAL_AMFLAGS = -I $(RTEMS_TOPdir)/aclocal + +# wrapup is the one that actually builds and installs the library +# from the individual .rel files built in other directories +SUBDIRS = . include console startup start irq wrapup + +EXTRA_DIST = bsp_specs + +include $(top_srcdir)/../../../../../../automake/subdirs.am +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/bsp_specs b/c/src/lib/libbsp/arm/arm_bare_bsp/bsp_specs new file mode 100644 index 0000000000..cec6e5bc4c --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/bsp_specs @@ -0,0 +1,23 @@ +%rename cpp old_cpp +%rename lib old_lib +%rename endfile old_endfile +%rename startfile old_startfile +%rename link old_link + +*cpp: +%(old_cpp) %{qrtems: -D__embedded__ -DUSE_ENHANCED_INTR_API} -Asystem(embedded) + +*lib: +%{!qrtems: %(old_lib)} %{qrtems: --start-group \ +%{!qrtems_debug: -lrtemsall} %{qrtems_debug: -lrtemsall_g} \ +-lc -lgcc --end-group \ +%{!qnolinkcmds: -T linkcmds%s}} + +*startfile: +%{!qrtems: %(old_startfile)} %{qrtems: \ +%{!qrtems_debug: start.o%s crtbegin.o%s} \ +%{qrtems_debug: start_g.o%s crtbegin.o%s}} + +*link: +%{!qrtems: %(old_link)} %{qrtems: -Qy -dp -Bstatic -T linkcmds%s -e _start} + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/configure.in b/c/src/lib/libbsp/arm/arm_bare_bsp/configure.in new file mode 100644 index 0000000000..6ef0a39cc3 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/configure.in @@ -0,0 +1,43 @@ +dnl Process this file with autoconf to produce a configure script. +dnl +dnl $Id$ + +AC_PREREQ(2.13) +AC_INIT(bsp_specs) +RTEMS_TOP(../../../../../..) +AC_CONFIG_AUX_DIR(../../../../../..) + +RTEMS_CANONICAL_TARGET_CPU +AM_INIT_AUTOMAKE(rtems-c-src-lib-libbsp-arm-arm_bare_bsp,$RTEMS_VERSION,no) +AM_MAINTAINER_MODE + +RTEMS_PROG_CC_FOR_TARGET +RTEMS_CANONICALIZE_TOOLS + +RTEMS_ENV_RTEMSBSP +RTEMS_CHECK_CUSTOM_BSP(RTEMS_BSP) +RTEMS_CHECK_BSP_CACHE(RTEMS_BSP) +RTEMS_CHECK_NETWORKING +RTEMS_CANONICAL_HOST + +dnl if this is an i386, does gas have good code16 support? +RTEMS_I386_GAS_CODE16 +AM_CONDITIONAL(RTEMS_GAS_CODE16,test "$RTEMS_GAS_CODE16" = "yes"); + +AM_CONDITIONAL(HAS_NETWORKING,test "$HAS_NETWORKING" = "yes") + +AC_CONFIG_SUBDIRS(tools) + +AC_SUBST(RTEMS_BSP) + +RTEMS_PROJECT_ROOT + +# Explicitly list all Makefiles here +AC_OUTPUT( +Makefile +console/Makefile +include/Makefile +irq/Makefile +start/Makefile +startup/Makefile +wrapup/Makefile) diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/console/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/console/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/console/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/console/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/console/Makefile.am new file mode 100644 index 0000000000..668e7c05b5 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/console/Makefile.am @@ -0,0 +1,32 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +VPATH = @srcdir@/../../shared/comm:@srcdir@/../../shared/io + +PGM = $(ARCH)/console.rel + +C_FILES = uart.c console.c printk.c +C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o) + +H_FILES = uart.h bspio.h + +console_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o) + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(PGM): $(console_rel_OBJECTS) + $(make-rel) + +all: $(ARCH) $(console_rel_OBJECTS) $(PGM) + +.PRECIOUS: $(PGM) + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/include/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/include/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/include/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/include/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/include/Makefile.am new file mode 100644 index 0000000000..6e4ee50f82 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/include/Makefile.am @@ -0,0 +1,24 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +H_FILES = bsp.h registers.h + +$(PROJECT_INCLUDE): + $(mkinstalldirs) $@ + +$(PROJECT_INCLUDE)/%.h: %.h + $(INSTALL_DATA) $< $@ + +$(PROJECT_INCLUDE)/coverhd.h: $(top_srcdir)/../../shared/include/coverhd.h + $(INSTALL_DATA) $< $@ + +PREINSTALL_FILES += $(PROJECT_INCLUDE) $(H_FILES:%.h=$(PROJECT_INCLUDE)/%.h) + +all: $(PREINSTALL_FILES) + +EXTRA_DIST = bspio.h bsp.h uart.h registers.h + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/include/bsp.h b/c/src/lib/libbsp/arm/arm_bare_bsp/include/bsp.h new file mode 100644 index 0000000000..33ba5358c1 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/include/bsp.h @@ -0,0 +1,33 @@ +/*-------------------------------------------------------------------------+ +| bsp.h - ARM BSP ++--------------------------------------------------------------------------+ +| This include file contains definitions related to the ARM BSP. ++--------------------------------------------------------------------------+ +| +| Copyright (c) Canon Research France SA.] +| Emmanuel Raguet, mailto:raguet@crf.canon.fr +| +| The license and distribution terms for this file may be +| found in found in the file LICENSE in this distribution or at +| http://www.OARcorp.com/rtems/license.html. +| +| $Id$ ++--------------------------------------------------------------------------*/ + + +#ifndef __BSP_H_ +#define __BSP_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include +#include +#include + + +#endif /* __BSP_H_ */ +/* end of include file */ + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/include/registers.h b/c/src/lib/libbsp/arm/arm_bare_bsp/include/registers.h new file mode 100644 index 0000000000..2298db67f8 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/include/registers.h @@ -0,0 +1,53 @@ +/* + * BSP registers declaration + * + * Copyright (c) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + */ + + +#ifndef __REGS_H__ +#define __REGS_H__ + +/* + * VARIABLE DECLARATION + */ + +#ifndef __asm__ +extern volatile unsigned long *Regs; /* Chip registers */ +#endif + + + +/* + * Here must be "defined" each register, to use with Regs as + * LM_Regs[REGISTER1] = value + */ + +#define REGISTER1 1 +#define REGISTER2 2 + + +/* + * define for UART registers to be able + * to compile and link arm_bare_bsp + */ + +#define RSRBR 0 +#define RSTHR 1 +#define RSIER 2 +#define RSIIR 3 +#define RSFCR 4 +#define RSLCR 5 +#define RSLSR 6 +#define RSDLL 7 +#define RSDLH 8 +#define RSCNT 9 + +#endif /*__REGS_H__*/ + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/Makefile.am new file mode 100644 index 0000000000..ec9fccfbf4 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/Makefile.am @@ -0,0 +1,44 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +VPATH = @srcdir@:@srcdir@/../../shared/irq + +PGM = $(ARCH)/irq.rel + +C_FILES = irq.c irq_init.c bsp_irq_init.c +S_FILES = irq_asm.S bsp_irq_asm.S +H_FILES = irq.h + +C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o) +S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o) + +irq_rel_OBJECTS = $(C_O_FILES) $(S_O_FILES) + +$(PROJECT_INCLUDE): + $(mkinstalldirs) $@ + +$(PROJECT_INCLUDE)/%.h: %.h + $(INSTALL_DATA) $< $@ + +PREINSTALL_FILES += $(PROJECT_INCLUDE) $(H_FILES:%.h=$(PROJECT_INCLUDE)/%.h) + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(PGM): $(startup_rel_OBJECTS) + $(make-rel) + +all: $(PREINSTALL_FILES) $(ARCH) $(irq_rel_OBJECTS) $(PGM) + +.PRECIOUS: $(PGM) + +EXTRA_DIST = irq.c bsp_irq_init.c bsp_irq_asm.S + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_asm.S b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_asm.S new file mode 100644 index 0000000000..5e0a36d705 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_asm.S @@ -0,0 +1,44 @@ +/* bsp_irq_asm.S + * + * This file contains the implementation of the IRQ handler + * for a specific BSP + * + * CopyRight (C) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + */ + +#define __asm__ +#include + +/* + * Function to obtain, execute an IT handler and acknowledge the IT + */ + + .globl ExecuteITHandler + +ExecuteITHandler : + + /* + * Here is the code to execute the appropriate INT handler + */ + + b ReturnFromHandler /* return to ISR handler */ + +/* + * Function to acknowledge the IT controller + */ + .globl AckControler + +AckControler: + + /* + * Here is the code to acknowledge the PIC + */ + + b ReturnFromAck /* return to ISR handler */ + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_init.c b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_init.c new file mode 100644 index 0000000000..cdaa289b06 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/bsp_irq_init.c @@ -0,0 +1,27 @@ +/* irq_init.c + * + * This file contains the implementation of rtems initialization + * related to interrupt handling. + * + * CopyRight (C) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ +#include +#include +#include + + +void BSP_rtems_irq_mngt_init() { + + /* + * Here is the code to initialize the INT for + * the specified BSP + */ + +} diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c new file mode 100644 index 0000000000..b4f2d14931 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c @@ -0,0 +1,119 @@ +/* irq.c + * + * This file contains the implementation of the function described in irq.h + * + * CopyRight (C) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + + +#include +#include +#include +#include +#include + + +/* + * This function check that the value given for the irq line + * is valid. + */ + +static int isValidInterrupt(int irq) +{ + if ( (irq < 0) || (irq > BSP_MAX_INT)) + return 0; + return 1; +} + +/* + * ------------------------ RTEMS Single Irq Handler Mngt Routines ---------------- + */ + +int BSP_install_rtems_irq_handler (const rtems_irq_connect_data* irq) +{ + rtems_irq_hdl *HdlTable; + + if (!isValidInterrupt(irq->name)) { + return 0; + } + /* + * Check if default handler is actually connected. If not issue an error. + */ + HdlTable = VECTOR_TABLE; + if (*(HdlTable + irq->name) != default_int_handler) { + return 0; + } + + _CPU_ISR_Disable(level); + + /* + * store the new handler + */ + *(HdlTable + irq->name) = irq->hdl; + + /* + * Here is the code to install an interrupt vector + * for the BSP : unmask INT, .... + * ........................ + */ + + _CPU_ISR_Enable(level); + + return 1; +} + +int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data* irq) +{ + rtems_irq_hdl *HdlTable; + + if (!isValidInterrupt(irq->name)) { + return 0; + } + /* + * Check if the handler is actually connected. If not issue an error. + */ + HdlTable = VECTOR_TABLE; + if (*(HdlTable + irq->name) != irq->hdl) { + return 0; + } + _CPU_ISR_Disable(level); + + /* + * Here is the code to uninstall an interrupt vector + * for the BSP : mask INT, .... + * ........................ + */ + + /* + * restore the default irq value + */ + *(HdlTable + irq->name) = default_int_handler; + + _CPU_ISR_Enable(level); + + return 1; +} + + + +void _ThreadProcessSignalsFromIrq (CPU_Exception_frame* ctx) +{ + /* + * Process pending signals that have not already been + * processed by _Thread_Displatch. This happens quite + * unfrequently : the ISR must have posted an action + * to the current running thread. + */ + if ( _Thread_Do_post_task_switch_extension || + _Thread_Executing->do_post_task_switch_extension ) { + _Thread_Executing->do_post_task_switch_extension = FALSE; + _API_extensions_Run_postswitch(); + } +} diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h new file mode 100644 index 0000000000..0148267345 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h @@ -0,0 +1,168 @@ +/* irq.h + * + * This include file describe the data structure and the functions implemented + * by rtems to write interrupt handlers. + * + * Copyright (c) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + */ + +#ifndef _IRQ_H_ +#define _IRQ_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Include some preprocessor value also used by assember code + */ + +#include + +extern void default_int_handler(); +/*-------------------------------------------------------------------------+ +| Constants ++--------------------------------------------------------------------------*/ + + /* enum of the possible interrupt sources */ +typedef enum { + BSP_INT_1 = 0, + BSP_INT_2 = 1, + BSP_UART = 2, + BSP_MAX_INT = 3 +} rtems_irq_symbolic_name; + + /* define that can be useful (the values are just examples) */ +#define INTMASK 0x01 +#define VECTOR_TABLE 0x00 + +/* + * Type definition for RTEMS managed interrupts + */ +typedef unsigned char rtems_irq_level; +typedef unsigned char rtems_irq_trigger; + +struct __rtems_irq_connect_data__; /* forward declaratiuon */ + +typedef void (*rtems_irq_hdl) (void); +typedef void (*rtems_irq_enable) (const struct __rtems_irq_connect_data__*); +typedef void (*rtems_irq_disable) (const struct __rtems_irq_connect_data__*); +typedef int (*rtems_irq_is_enabled) (const struct __rtems_irq_connect_data__*); + +typedef struct __rtems_irq_connect_data__ { + /* + * IRQ line + */ + rtems_irq_symbolic_name name; + /* + * handler. See comment on handler properties below in function prototype. + */ + rtems_irq_hdl hdl; + /* + * function for enabling interrupts at device level (ONLY!). + * The BSP code will automatically enable it at i8259s level. + * RATIONALE : anyway such code has to exist in current driver code. + * It is usually called immediately AFTER connecting the interrupt handler. + * RTEMS may well need such a function when restoring normal interrupt + * processing after a debug session. + * + */ + rtems_irq_enable on; + /* + * function for disabling interrupts at device level (ONLY!). + * The code will disable it at i8259s level. RATIONALE : anyway + * such code has to exist for clean shutdown. It is usually called + * BEFORE disconnecting the interrupt. RTEMS may well need such + * a function when disabling normal interrupt processing for + * a debug session. May well be a NOP function. + */ + rtems_irq_disable off; + /* + * function enabling to know what interrupt may currently occur + * if someone manipulates the i8259s interrupt mask without care... + */ + rtems_irq_is_enabled isOn; + /* + * priority level at the vplus level + */ + rtems_irq_level irqLevel; + /* + * Trigger way : Rising or falling edge or High or low level + */ + rtems_irq_trigger irqTrigger; +} rtems_irq_connect_data; + +/*-------------------------------------------------------------------------+ +| Function Prototypes. ++--------------------------------------------------------------------------*/ +/* + * ------------------------ RTEMS Single Irq Handler Mngt Routines ---------------- + */ + +/* + * function to initialize the interrupt for a specific BSP + */ +void BSP_rtems_irq_mngt_init(); + + +/* + * function to connect a particular irq handler. This hanlder will NOT be called + * directly as the result of the corresponding interrupt. Instead, a RTEMS + * irq prologue will be called that will : + * + * 1) save the C scratch registers, + * 2) switch to a interrupt stack if the interrupt is not nested, + * 3) store the current i8259s' interrupt masks + * 4) modify them to disable the current interrupt at 8259 level (and may + * be others depending on software priorities) + * 5) aknowledge the i8259s', + * 6) demask the processor, + * 7) call the application handler + * + * As a result the hdl function provided + * + * a) can perfectly be written is C, + * b) may also well directly call the part of the RTEMS API that can be used + * from interrupt level, + * c) It only responsible for handling the jobs that need to be done at + * the device level including (aknowledging/re-enabling the interrupt at device, + * level, getting the data,...) + * + * When returning from the function, the following will be performed by + * the RTEMS irq epilogue : + * + * 1) masks the interrupts again, + * 2) restore the original i8259s' interrupt masks + * 3) switch back on the orinal stack if needed, + * 4) perform rescheduling when necessary, + * 5) restore the C scratch registers... + * 6) restore initial execution flow + * + */ + +int BSP_install_rtems_irq_handler (const rtems_irq_connect_data*); +/* + * function to get the current RTEMS irq handler for ptr->name. It enables to + * define hanlder chain... + */ +int BSP_get_current_rtems_irq_handler (rtems_irq_connect_data* ptr); +/* + * function to get disconnect the RTEMS irq handler for ptr->name. + * This function checks that the value given is the current one for safety reason. + * The user can use the previous function to get it. + */ +int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data*); + + +#ifdef __cplusplus +} +#endif + +#endif /* _IRQ_H_ */ +/* end of include file */ diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am new file mode 100644 index 0000000000..22fda2740d --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am @@ -0,0 +1,33 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +PGMS = $(ARCH)/start.o + +S_FILES = start.S +S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o) + +OBJS = $(S_O_FILES) + +TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +LINKCMDS = $(top_srcdir)/startup/linkcmds + +$(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o: $(ARCH)/start.o + $(INSTALL_DATA) $< $@ + + +all: $(ARCH) $(OBJS) $(TMPINSTALL_FILES) + +EXTRA_DIST = start.S + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S b/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S new file mode 100644 index 0000000000..6c81efda8d --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S @@ -0,0 +1,157 @@ +/* + * start.S : RTEMS entry point + * + * Copyright (C) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + */ + +.equ ABORT_Stack, 0 +.equ IRQ_Stack, 0x100 +.equ FIQ_Stack, 0x200 +.equ SVC_Stack, 0x300 + +/* Some standard definitions...*/ + +.equ Mode_USR, 0x10 +.equ Mode_FIQ, 0x11 +.equ Mode_IRQ, 0x12 +.equ Mode_SVC, 0x13 +.equ Mode_ABT, 0x17 +.equ Mode_ABORT, 0x17 +.equ Mode_UNDEF, 0x1B +.equ Mode_SYS, 0x1F /*only available on ARM Arch. v4*/ + +.equ I_Bit, 0x80 +.equ F_Bit, 0x40 + + + .text + .globl _start + + +_start: + +/* + * Here is the code to initialize the low-level BSP environment + * (Chip Select, PLL, ....?) + + +/* Copy data from FLASH to RAM */ + LDR r0, =_initdata /* load address of region */ + LDR r1, =0x400000 /* execution address of region */ + LDR r2, =_edata /* copy execution address into r2 */ + +copy: + CMP r1, r2 /* loop whilst r1 < r2 */ + LDRLO r3, [r0], #4 + STRLO r3, [r1], #4 + BLO copy + +/* zero the bss */ + LDR r1, =__bss_end__ /* get end of ZI region */ + LDR r0, =__bss_start__ /* load base address of ZI region */ +zi_init: + MOV r2, #0 + CMP r0, r1 /* loop whilst r0 < r1 */ + STRLOT r2, [r0], #4 + BLO zi_init + + +/* Load basic ARM7 interrupt table */ +VectorInit: + MOV R8, #0 + ADR R9, Vector_Init_Block + LDMIA R9!, {R0-R7} /* Copy the Vectors (8 words) */ + STMIA R8!, {R0-R7} + LDMIA R9!, {R0-R7} /* Copy the .long'ed addresses (8 words) */ + STMIA R8!, {R0-R7} + + B init2 + +/******************************************************* + standard exception vectors table + *** Must be located at address 0 +********************************************************/ + +Vector_Init_Block: + LDR PC, Reset_Addr + LDR PC, Undefined_Addr + LDR PC, SWI_Addr + LDR PC, Prefetch_Addr + LDR PC, Abort_Addr + NOP + LDR PC, IRQ_Addr + LDR PC, FIQ_Addr + + .globl Reset_Addr +Reset_Addr: .long _start +Undefined_Addr: .long Undefined_Handler +SWI_Addr: .long SWI_Handler +Prefetch_Addr: .long Prefetch_Handler +Abort_Addr: .long Abort_Handler + .long 0 +IRQ_Addr: .long IRQ_Handler +FIQ_Addr: .long FIQ_Handler + +/* The following handlers do not do anything useful */ + .globl Undefined_Handler +Undefined_Handler: + B Undefined_Handler + .globl SWI_Handler +SWI_Handler: + B SWI_Handler + .globl Prefetch_Handler +Prefetch_Handler: + B Prefetch_Handler + .globl Abort_Handler +Abort_Handler: + B Abort_Handler + .globl IRQ_Handler +IRQ_Handler: + B IRQ_Handler + .globl FIQ_Handler +FIQ_Handler: + B FIQ_Handler + +init2 : +/* --- Initialise stack pointer registers + Set up the ABORT stack pointer last and stay in SVC mode */ + MOV r0, #(Mode_ABORT | I_Bit | F_Bit) /* No interrupts */ + MSR cpsr, r0 + LDR sp, =ABORT_Stack + +/* Enter IRQ mode and set up the IRQ stack pointer */ + MOV r0, #Mode_IRQ | I_Bit | F_Bit /* No interrupts */ + MSR cpsr, r0 + LDR sp, =IRQ_Stack + +/* Enter FIQ mode and set up the FIQ stack pointer */ + MOV r0, #Mode_FIQ | I_Bit | F_Bit /* No interrupts */ + MSR cpsr, r0 + LDR sp, =FIQ_Stack + +/* Set up the SVC stack pointer last and stay in SVC mode */ + MOV r0, #Mode_SVC | I_Bit | F_Bit /* No interrupts */ + MSR cpsr, r0 + LDR sp, =SVC_Stack + +/* --- Now we enter the C code */ + + B boot_card + + + + + + + + + + + + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am new file mode 100644 index 0000000000..2120b13288 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am @@ -0,0 +1,41 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +VPATH = @srcdir@:@srcdir@/../../../shared + +C_FILES = bsplibc.c bsppost.c bspstart.c exit.c bootcard.c main.c sbrk.c gnatinstallhandler.c +C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o) + +S_FILES = +S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o) + +startup_rel_OBJECTS = $(C_O_FILES) $(S_O_FILES) + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +# USE_INIT_FINI tells main.c what C++ help we need. + +$(PGM): $(startup_rel_OBJECTS) + $(make-rel) + +$(PROJECT_RELEASE)/lib/linkcmds: linkcmds + $(INSTALL_DATA) $< $@ + +TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds + +all: $(ARCH) $(startup_rel_OBJECTS) $(PGM) $(TMPINSTALL_FILES) + +.PRECIOUS: $(PGM) + +EXTRA_DIST = linkcmds + +include $(top_srcdir)/../../../../../../automake/local.am + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c new file mode 100644 index 0000000000..a3bfa2672a --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c @@ -0,0 +1,164 @@ +/*-------------------------------------------------------------------------+ +| This file contains the ARM BSP startup package. It includes application, +| board, and monitor specific initialization and configuration. The generic CPU +| dependent initialization has been performed before this routine is invoked. ++--------------------------------------------------------------------------+ +| +| Copyright (c) 2000 Canon Research Centre France SA. +| Emmanuel Raguet, mailto:raguet@crf.canon.fr +| +| The license and distribution terms for this file may be +| found in found in the file LICENSE in this distribution or at +| http://www.OARcorp.com/rtems/license.html. +| ++--------------------------------------------------------------------------*/ + + +#include +#include +#include +#include + +/*-------------------------------------------------------------------------+ +| Global Variables ++--------------------------------------------------------------------------*/ + +/* + * must be initialized with the right address + */ +volatile unsigned long *Regs = (unsigned long*)0xdeadbeef; /* Chip registers */ + +extern rtems_unsigned32 _end; /* End of BSS. Defined in 'linkcmds'. */ +/* + * Size of heap if it is 0 it will be dynamically defined by memory size, + * otherwise the value should be changed by binary patch + */ +rtems_unsigned32 _heap_size = 0; + +/* Size of stack used during initialization. Defined in 'start.s'. */ +extern rtems_unsigned32 _stack_size; + +rtems_unsigned32 rtemsFreeMemStart; + /* Address of start of free memory - should be updated + after creating new partitions or regions. */ + +/* The original BSP configuration table from the application and our copy of it + with some changes. */ + +extern rtems_configuration_table Configuration; + rtems_configuration_table BSP_Configuration; + +rtems_cpu_table Cpu_table; /* CPU configuration table. */ +char *rtems_progname; /* Program name - from main(). */ + +/*-------------------------------------------------------------------------+ +| External Prototypes ++--------------------------------------------------------------------------*/ +extern void rtems_irq_mngt_init(void); +void bsp_libc_init( void *, unsigned32, int ); +void bsp_postdriver_hook(void); + +/*-------------------------------------------------------------------------+ +| Function: bsp_pretasking_hook +| Description: BSP pretasking hook. Called just before drivers are +| initialized. Used to setup libc and install any BSP +| extensions. NOTE: Must not use libc (to do io) from here, +| since drivers are not yet initialized. +| Global Variables: None. +| Arguments: None. +| Returns: Nothing. ++--------------------------------------------------------------------------*/ +void bsp_pretasking_hook(void) +{ + + if(_heap_size == 0) + { + _heap_size = 0x420000 - rtemsFreeMemStart; + } + + bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0); + + rtemsFreeMemStart += _heap_size; /* HEAP_SIZE in KBytes */ + + +#ifdef RTEMS_DEBUG + + rtems_debug_enable(RTEMS_DEBUG_ALL_MASK); + +#endif /* RTEMS_DEBUG */ + +} /* bsp_pretasking_hook */ + + +/*-------------------------------------------------------------------------+ +| Function: bsp_start +| Description: Called before main is invoked. +| Global Variables: None. +| Arguments: None. +| Returns: Nothing. ++--------------------------------------------------------------------------*/ +void bsp_start_default( void ) +{ + rtemsFreeMemStart = (rtems_unsigned32)(&_end); /* &_end+_stack_size;*/ + /* set the value of start of free memory. */ + + /* If we don't have command line arguments set default program name. */ + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + Cpu_table.predriver_hook = NULL; /* use system's */ + Cpu_table.postdriver_hook = bsp_postdriver_hook; + Cpu_table.idle_task = NULL; + /* do not override system IDLE task */ + Cpu_table.do_zero_of_workspace = TRUE; + Cpu_table.interrupt_stack_size = 4096; + Cpu_table.extra_mpci_receive_server_stack = 0; + + /* Place RTEMS workspace at beginning of free memory. */ + BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart; + + rtemsFreeMemStart += BSP_Configuration.work_space_size; + + console_reserve_resources(&BSP_Configuration); + + /* + * Init rtems exceptions management + */ + rtems_exception_init_mngt(); + + /* + * Init rtems interrupt management + */ + rtems_irq_mngt_init(); + + /* + * The following information is very useful when debugging. + */ + +#if 0 + printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); + printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions ); + printk( "microseconds_per_tick = 0x%x\n", + BSP_Configuration.microseconds_per_tick ); + printk( "ticks_per_timeslice = 0x%x\n", + BSP_Configuration.ticks_per_timeslice ); + printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices ); + printk( "number_of_device_drivers = 0x%x\n", + BSP_Configuration.number_of_device_drivers ); + printk( "Device_driver_table = 0x%x\n", + BSP_Configuration.Device_driver_table ); + + printk( "_heap_size = 0x%x\n", _heap_size ); + /* printk( "_stack_size = 0x%x\n", _stack_size );*/ + printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart ); + printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start ); + printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); +#endif + +} /* bsp_start */ + +/* + * By making this a weak alias for bsp_start_default, a brave soul + * can override the actual bsp_start routine used. + */ + +void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default"))); diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c new file mode 100644 index 0000000000..7eb3056585 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c @@ -0,0 +1,48 @@ +/*-------------------------------------------------------------------------+ +| exit.c - ARM BSP ++--------------------------------------------------------------------------+ +| Routines to shutdown and reboot the BSP. ++--------------------------------------------------------------------------+ +| +| Copyright (c) 2000 Canon Research Centre France SA. +| Emmanuel Raguet, mailto:raguet@crf.canon.fr +| +| The license and distribution terms for this file may be +| found in found in the file LICENSE in this distribution or at +| http://www.OARcorp.com/rtems/license.html. +| ++--------------------------------------------------------------------------*/ + + +#include +#include +#include +#include + +void rtemsReboot (void) +{ + asm volatile ("b _start"); +} + +void bsp_cleanup(void) +{ + unsigned char ch; + static char line[]="\nEXECUTIVE SHUTDOWN! Any key to reboot..."; + /* + * AT this point, the console driver is disconnected => we must + * use polled output/input. This is exactly what printk + * does. + */ + printk("\n"); + printk(line); + ch = BSP_poll_char(); + rtemsReboot(); +} + + + + + + + + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds new file mode 100644 index 0000000000..f873318571 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds @@ -0,0 +1,240 @@ +OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", + "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib); +MEMORY { + FLASH (rx) : ORIGIN = 0x200000, LENGTH = 512K + RAM (!rx) : ORIGIN = 0x400000, LENGTH = 128K +} + +/* Do we need any of these for elf? + __DYNAMIC = 0; */ +SECTIONS +{ + /* Read-only sections, merged into text segment: */ +/* . = 0 + SIZEOF_HEADERS;*/ + .hash : { *(.hash) } > FLASH + .dynsym : { *(.dynsym) } > FLASH + .dynstr : { *(.dynstr) } > FLASH + .gnu.version : { *(.gnu.version) } > FLASH + .gnu.version_d : { *(.gnu.version_d) } > FLASH + .gnu.version_r : { *(.gnu.version_r) } > FLASH + .rel.init : { *(.rel.init) } > FLASH + .rela.init : { *(.rela.init) } > FLASH + .rel.text : + { + *(.rel.text) + *(.rel.text.*) + *(.rel.gnu.linkonce.t*) + } > FLASH + .rela.text : + { + *(.rela.text) + *(.rela.text.*) + *(.rela.gnu.linkonce.t*) + } > FLASH + .rel.fini : { *(.rel.fini) } > FLASH + .rela.fini : { *(.rela.fini) } > FLASH + .rel.rodata : + { + *(.rel.rodata) + *(.rel.rodata.*) + *(.rel.gnu.linkonce.r*) + } > FLASH + .rela.rodata : + { + *(.rela.rodata) + *(.rela.rodata.*) + *(.rela.gnu.linkonce.r*) + } > FLASH + .rel.data : + { + *(.rel.data) + *(.rel.data.*) + *(.rel.gnu.linkonce.d*) + } > FLASH + .rela.data : + { + *(.rela.data) + *(.rela.data.*) + *(.rela.gnu.linkonce.d*) + } > FLASH + .rel.ctors : { *(.rel.ctors) } > FLASH + .rela.ctors : { *(.rela.ctors) } > FLASH + .rel.dtors : { *(.rel.dtors) } > FLASH + .rela.dtors : { *(.rela.dtors) } > FLASH + .rel.got : { *(.rel.got) } > FLASH + .rela.got : { *(.rela.got) } > FLASH + .rel.sdata : + { + *(.rel.sdata) + *(.rel.sdata.*) + *(.rel.gnu.linkonce.s*) + } > FLASH + .rela.sdata : + { + *(.rela.sdata) + *(.rela.sdata.*) + *(.rela.gnu.linkonce.s*) + } > FLASH + .rel.sbss : { *(.rel.sbss) } > FLASH + .rela.sbss : { *(.rela.sbss) } > FLASH + .rel.bss : { *(.rel.bss) } > FLASH + .rela.bss : { *(.rela.bss) } > FLASH + .rel.plt : { *(.rel.plt) } > FLASH + .rela.plt : { *(.rela.plt) } > FLASH + .init : + { + KEEP (*(.init)) + } > FLASH /*=0*/ + .plt : { *(.plt) } > FLASH + .text : + { + *(.text) + *(.text.*) + *(.stub) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + *(.glue_7t) *(.glue_7) + } > FLASH /*=0*/ + _etext = .; + PROVIDE (etext = .); + .fini : + { + KEEP (*(.fini)) + } > FLASH /*=0*/ + .rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*) } > FLASH + .rodata1 : { *(.rodata1) } > FLASH + _erodata = ABSOLUTE(.); + PROVIDE (erodata = ABSOLUTE(.)); + /* Adjust the address for the data segment. We want to adjust up to + the same address within the page on the next page up. */ + . = ALIGN(256); + _begdata = ALIGN(256); + .arm_end_text : + { + . = ALIGN(256); + _initdata = ALIGN(256); + } > FLASH + .data : AT (_begdata) + { + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + SORT(CONSTRUCTORS) + } > RAM + .data1 : { *(.data1) } > RAM + .eh_frame : { *(.eh_frame) } > RAM + .gcc_except_table : { *(.gcc_except_table) } > RAM + .ctors : + { + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is + first. Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + KEEP (*crtbegin.o(.ctors)) + /* We don't want to include the .ctor section from + from the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + } > RAM + .dtors : + { + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + } > RAM + .got : { *(.got.plt) *(.got) } > RAM + .dynamic : { *(.dynamic) } > RAM + /* We want the small data sections together, so single-instruction offsets + can access them all, and initialized data all before uninitialized, so + we can shorten the on-disk segment size. */ + .sdata : + { + *(.sdata) + *(.sdata.*) + *(.gnu.linkonce.s.*) + } > RAM + .arm_data : + { + _edata = .; + __bss_start = .; + __bss_start__ = .; + } > RAM + .sbss : + { + *(.dynsbss) + *(.sbss) + *(.sbss.*) + *(.scommon) + } > RAM + .bss : + { + *(.dynbss) + *(.bss) + *(.bss.*) + *(COMMON) + /* Align here to ensure that the .bss section occupies space up to + _end. Align after .bss to ensure correct alignment even if the + .bss section disappears because there are no input sections. */ + . = ALIGN(32 / 8); + } > RAM + . = ALIGN(32 / 8); + .arm_end : + { + _end = .; + _bss_end__ = . ; + __bss_end__ = . ; + __end__ = . ; + } > RAM + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + /*.stack 0x80000 : { _stack = .; *(.stack) }*/ + /* These must appear regardless of . */ +} + + + + diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/Makefile.am new file mode 100644 index 0000000000..8d7d4068b2 --- /dev/null +++ b/c/src/lib/libbsp/arm/arm_bare_bsp/wrapup/Makefile.am @@ -0,0 +1,32 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +BSP_PIECES = console startup irq + +# bummer; have to use $foreach since % pattern subst rules only replace 1x +OBJS = $(foreach piece, $(BSP_PIECES), ../$(piece)/$(ARCH)/*.o) +LIB = $(ARCH)/libbsp.a + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(LIB): $(OBJS) + $(make-library) + +$(PROJECT_RELEASE)/lib/libbsp$(LIB_VARIANT).a: $(LIB) + $(INSTALL_DATA) $< $@ + +TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/libbsp$(LIB_VARIANT).a + +all: $(ARCH) $(OBJS) $(LIB) $(TMPINSTALL_FILES) + +.PRECIOUS: $(LIB) + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/configure.in b/c/src/lib/libbsp/arm/configure.in new file mode 100644 index 0000000000..902b088748 --- /dev/null +++ b/c/src/lib/libbsp/arm/configure.in @@ -0,0 +1,28 @@ +dnl Process this file with autoconf to produce a configure script. +dnl +dnl $Id$ + +AC_PREREQ(2.13) +AC_INIT(arm_bare_bsp) +RTEMS_TOP(../../../../..) +AC_CONFIG_AUX_DIR(../../../../..) + +RTEMS_CANONICAL_TARGET_CPU +AM_INIT_AUTOMAKE(rtems-c-src-lib-libbsp-arm,$RTEMS_VERSION,no) +AM_MAINTAINER_MODE + +RTEMS_ENV_RTEMSBSP +RTEMS_CHECK_CUSTOM_BSP(RTEMS_BSP) +RTEMS_CHECK_BSP_CACHE(RTEMS_BSP) +RTEMS_PROJECT_ROOT + +RTEMS_BSP_ALIAS(${RTEMS_BSP},bspdir) +AC_CONFIG_SUBDIRS($bspdir) + +# Explicitly list all Makefiles here +AC_OUTPUT( +Makefile +shared/Makefile +shared/comm/Makefile +shared/io/Makefile +shared/irq/Makefile) diff --git a/c/src/lib/libbsp/arm/shared/.cvsignore b/c/src/lib/libbsp/arm/shared/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/shared/Makefile.am b/c/src/lib/libbsp/arm/shared/Makefile.am new file mode 100644 index 0000000000..2a3b172604 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/Makefile.am @@ -0,0 +1,10 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +SUBDIRS = comm io irq + +include $(top_srcdir)/../../../../../automake/subdirs.am +include $(top_srcdir)/../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/shared/comm/.cvsignore b/c/src/lib/libbsp/arm/shared/comm/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/comm/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/shared/comm/Makefile.am b/c/src/lib/libbsp/arm/shared/comm/Makefile.am new file mode 100644 index 0000000000..d049ebd8a8 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/comm/Makefile.am @@ -0,0 +1,22 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +H_FILES = uart.h + +C_FILES = console.c uart.c + +$(PROJECT_INCLUDE): + $(mkinstalldirs) $@ +$(PROJECT_INCLUDE)/%.h: %.h + $(INSTALL_DATA) $< $@ + +PREINSTALL_FILES += $(PROJECT_INCLUDE) $(H_FILES:%.h=$(PROJECT_INCLUDE)/%.h) + +all: $(PREINSTALL_FILES) + +EXTRA_DIST = console.c uart.c uart.h + +include $(top_srcdir)/../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/shared/comm/console.c b/c/src/lib/libbsp/arm/shared/comm/console.c new file mode 100644 index 0000000000..ec623c3dda --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/comm/console.c @@ -0,0 +1,367 @@ +/*-------------------------------------------------------------------------+ +| console.c - ARM BSP ++--------------------------------------------------------------------------+ +| This file contains the ARM console I/O package. ++--------------------------------------------------------------------------+ +| COPYRIGHT (c) 2000 Canon Research France SA. +| Emmanuel Raguet, mailto:raguet@crf.canon.fr +| +| The license and distribution terms for this file may be +| found in found in the file LICENSE in this distribution or at +| http://www.OARcorp.com/rtems/license.html. +| +| $Id$ ++--------------------------------------------------------------------------*/ + +#include +#include +#include +#include +#undef __assert +void __assert (const char *file, int line, const char *msg); + +#include +#include +#include +#include +#include +#include +#include + +/* + * Possible value for console input/output : + * BSP_CONSOLE_PORT_CONSOLE + * BSP_UART_COM1 + * BSP_UART_COM2 + * + * Note: + * 1. Currently BSPPrintkPort, cannot be assigned to COM2, + * it will be fixed soon. + * + * 2. If both BSPConsolePort and BSPPrintkport are assigned + * to same serial device it does not work that great + */ + +int BSPConsolePort = BSP_UART_COM1; +int BSPPrintkPort = BSP_UART_COM1; + +int BSPBaseBaud = 115200; + + +/*-------------------------------------------------------------------------+ +| External Prototypes ++--------------------------------------------------------------------------*/ +extern char BSP_wait_polled_input(void); +extern BSP_polling_getchar_function_type BSP_poll_char; +extern void rtemsReboot(void); + +static int conSetAttr(int minor, const struct termios *); +static void isr_on(const rtems_irq_connect_data *); +static void isr_off(const rtems_irq_connect_data *); +static int isr_is_on(const rtems_irq_connect_data *); + +/* + * BSP initialization + */ + +BSP_output_char_function_type BSP_output_char = BSP_output_char_via_serial; +BSP_polling_getchar_function_type BSP_poll_char = BSP_poll_char_via_serial; + + +static rtems_irq_connect_data console_isr_data = {BSP_UART, + BSP_uart_termios_isr_com1, + isr_on, + isr_off, + isr_is_on}; + +static void +isr_on(const rtems_irq_connect_data *unused) +{ + return; +} + +static void +isr_off(const rtems_irq_connect_data *unused) +{ + return; +} + +static int +isr_is_on(const rtems_irq_connect_data *irq) +{ + if (Regs[INTMASK] & 0x4) + return 0; + else + return 1; +} + +void console_reserve_resources(rtems_configuration_table *conf) +{ + rtems_termios_reserve_resources(conf, 1); + + return; +} + +void __assert (const char *file, int line, const char *msg) +{ + static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot..."; + unsigned char ch; + + /* + * Note we cannot call exit or printf from here, + * assert can fail inside ISR too + */ + + /* + * Close console + */ + close(2); + close(1); + close(0); + + printk("\nassert failed: %s: ", file); + printk("%d: ", line); + printk("%s\n\n", msg); + printk(exit_msg); + ch = BSP_poll_char(); + printk("\n\n"); + rtemsReboot(); + +} + + +/*-------------------------------------------------------------------------+ +| Console device driver INITIALIZE entry point. ++--------------------------------------------------------------------------+ +| Initilizes the I/O console (keyboard + VGA display) driver. ++--------------------------------------------------------------------------*/ +rtems_device_driver +console_initialize(rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg) +{ + rtems_status_code status; + + /* + * Set up TERMIOS + */ + rtems_termios_initialize (); + + /* + * Do device-specific initialization + */ + + /* 38400-8-N-1 */ + BSP_uart_init(BSPConsolePort, 38400, 0); + + + /* Set interrupt handler */ + console_isr_data.name = BSP_UART; + console_isr_data.hdl = BSP_uart_termios_isr_com1; + console_isr_data.irqLevel = 3; + console_isr_data.irqTrigger = 0; + + status = BSP_install_rtems_irq_handler(&console_isr_data); + + if (!status){ + printk("Error installing serial console interrupt handler!\n"); + rtems_fatal_error_occurred(status); + } + + /* + * Register the device + */ + status = rtems_io_register_name ("/dev/console", major, 0); + if (status != RTEMS_SUCCESSFUL) + { + printk("Error registering console device!\n"); + rtems_fatal_error_occurred (status); + } + + printk("Initialized console on port COM1 38400-8-N-1\n\n"); + + return RTEMS_SUCCESSFUL; +} /* console_initialize */ + + +static int console_open_count = 0; + +static int console_last_close(int major, int minor, void *arg) +{ + BSP_remove_rtems_irq_handler (&console_isr_data); + + return 0; +} + +/*-------------------------------------------------------------------------+ +| Console device driver OPEN entry point ++--------------------------------------------------------------------------*/ +rtems_device_driver +console_open(rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg) +{ + rtems_status_code status; + static rtems_termios_callbacks cb = + { + NULL, /* firstOpen */ + console_last_close, /* lastClose */ + NULL, /* pollRead */ + BSP_uart_termios_write_com1, /* write */ + conSetAttr, /* setAttributes */ + NULL, /* stopRemoteTx */ + NULL, /* startRemoteTx */ + 1 /* outputUsesInterrupts */ + }; + + status = rtems_termios_open (major, minor, arg, &cb); + + if(status != RTEMS_SUCCESSFUL) + { + printk("Error openning console device\n"); + return status; + } + + /* + * Pass data area info down to driver + */ + BSP_uart_termios_set(BSPConsolePort, + ((rtems_libio_open_close_args_t *)arg)->iop->data1); + + /* Enable interrupts on channel */ + BSP_uart_intr_ctrl(BSPConsolePort, BSP_UART_INTR_CTRL_TERMIOS); + + return RTEMS_SUCCESSFUL; +} + +/*-------------------------------------------------------------------------+ +| Console device driver CLOSE entry point ++--------------------------------------------------------------------------*/ +rtems_device_driver +console_close(rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg) +{ + rtems_device_driver res = RTEMS_SUCCESSFUL; + + res = rtems_termios_close (arg); + + return res; +} /* console_close */ + + +/*-------------------------------------------------------------------------+ +| Console device driver READ entry point. ++--------------------------------------------------------------------------+ +| Read characters from the I/O console. We only have stdin. ++--------------------------------------------------------------------------*/ +rtems_device_driver +console_read(rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg) +{ + + return rtems_termios_read (arg); + +} /* console_read */ + + +/*-------------------------------------------------------------------------+ +| Console device driver WRITE entry point. ++--------------------------------------------------------------------------+ +| Write characters to the I/O console. Stderr and stdout are the same. ++--------------------------------------------------------------------------*/ +rtems_device_driver +console_write(rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg) +{ + + return rtems_termios_write (arg); + +} /* console_write */ + + + +/* + * Handle ioctl request. + */ +rtems_device_driver +console_control(rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + return rtems_termios_ioctl (arg); +} + +static int +conSetAttr(int minor, const struct termios *t) +{ + int baud; + + switch (t->c_cflag & CBAUD) + { + case B50: + baud = 50; + break; + case B75: + baud = 75; + break; + case B110: + baud = 110; + break; + case B134: + baud = 134; + break; + case B150: + baud = 150; + break; + case B200: + baud = 200; + break; + case B300: + baud = 300; + break; + case B600: + baud = 600; + break; + case B1200: + baud = 1200; + break; + case B1800: + baud = 1800; + break; + case B2400: + baud = 2400; + break; + case B4800: + baud = 4800; + break; + case B9600: + baud = 9600; + break; + case B19200: + baud = 19200; + break; + case B38400: + baud = 38400; + break; + case B57600: + baud = 57600; + break; + case B115200: + baud = 115200; + break; + default: + baud = 0; + rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); + return 0; + } + + BSP_uart_set_baud(BSPConsolePort, baud); + + return 0; +} + + diff --git a/c/src/lib/libbsp/arm/shared/comm/uart.c b/c/src/lib/libbsp/arm/shared/comm/uart.c new file mode 100644 index 0000000000..ba63b7209c --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/comm/uart.c @@ -0,0 +1,577 @@ +/* + * This software is Copyright (C) 1998 by T.sqware - all rights limited + * It is provided in to the public domain "as is", can be freely modified + * as far as this copyight notice is kept unchanged, but does not imply + * an endorsement by T.sqware of the product in which it is included. + * + * COPYRIGHT (c) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include +#include +#include +#include +#include +#include + +/* + * Basic 16552 driver + */ + +struct uart_data +{ + int hwFlow; + int baud; +}; + +static struct uart_data uart_data[2]; + +/* + * Macros to read/wirte register of uart, if configuration is + * different just rewrite these macros + */ + +static inline unsigned char +uread(int uart, unsigned int reg) +{ + register unsigned char val; + + val = Regs[reg]; + + return val; +} + +static inline void +uwrite(int uart, int reg, unsigned int val) +{ + + Regs[reg] = val; + +} + +#ifdef UARTDEBUG + static void +uartError(int uart) +{ + unsigned char uartStatus, dummy; + + uartStatus = uread(uart, LSR); + dummy = uread(uart, RBR); + + if (uartStatus & OE) + printk("********* Over run Error **********\n"); + if (uartStatus & PE) + printk("********* Parity Error **********\n"); + if (uartStatus & FE) + printk("********* Framing Error **********\n"); + if (uartStatus & BI) + printk("********* Parity Error **********\n"); + if (uartStatus & ERFIFO) + printk("********* Error receive Fifo **********\n"); + +} +#else +inline void uartError(int uart) +{ + unsigned char uartStatus; + + uartStatus = uread(uart, LSR); + uartStatus = uread(uart, RBR); +} +#endif + +/* + * Uart initialization, it is hardcoded to 8 bit, no parity, + * one stop bit, FIFO, things to be changed + * are baud rate and nad hw flow control, + * and longest rx fifo setting + */ +void +BSP_uart_init(int uart, int baud, int hwFlow) +{ + unsigned char tmp; + + /* Sanity check */ + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + switch(baud) + { + case 50: + case 75: + case 110: + case 134: + case 300: + case 600: + case 1200: + case 2400: + case 9600: + case 19200: + case 38400: + case 57600: + case 115200: + break; + default: + assert(0); + return; + } + + /* Enable UART block */ + uwrite(uart, CNT, UART_ENABLE | PAD_ENABLE); + + /* Set DLAB bit to 1 */ + uwrite(uart, LCR, DLAB); + + /* Set baud rate */ + uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff); + uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff); + + /* 8-bit, no parity , 1 stop */ + uwrite(uart, LCR, CHR_8_BITS); + + /* Enable FIFO */ + uwrite(uart, FCR, FIFO_EN | XMIT_RESET | RCV_RESET | RECEIVE_FIFO_TRIGGER12); + + /* Disable Interrupts */ + uwrite(uart, IER, 0); + + /* Read status to clear them */ + tmp = uread(uart, LSR); + tmp = uread(uart, RBR); + + /* Remember state */ + uart_data[uart].hwFlow = hwFlow; + uart_data[uart].baud = baud; + return; +} + +/* + * Set baud + */ +void +BSP_uart_set_baud(int uart, int baud) +{ + unsigned char ier; + + /* Sanity check */ + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + /* + * This function may be called whenever TERMIOS parameters + * are changed, so we have to make sure that baud change is + * indeed required + */ + + if(baud == uart_data[uart].baud) + { + return; + } + + ier = uread(uart, IER); + + BSP_uart_init(uart, baud, uart_data[uart].hwFlow); + + uwrite(uart, IER, ier); + + return; +} + +/* + * Enable/disable interrupts + */ +void +BSP_uart_intr_ctrl(int uart, int cmd) +{ + + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + switch(cmd) + { + case BSP_UART_INTR_CTRL_DISABLE: + uwrite(uart, IER, INTERRUPT_DISABLE); + break; + case BSP_UART_INTR_CTRL_ENABLE: + uwrite(uart, IER, + (RECEIVE_ENABLE | + TRANSMIT_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + break; + case BSP_UART_INTR_CTRL_TERMIOS: + uwrite(uart, IER, + (RECEIVE_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + break; + case BSP_UART_INTR_CTRL_GDB: + uwrite(uart, IER, RECEIVE_ENABLE); + break; + default: + assert(0); + break; + } + + return; +} + + +/* + * Status function, -1 if error + * detected, 0 if no received chars available, + * 1 if received char available, 2 if break + * is detected, it will eat break and error + * chars. It ignores overruns - we cannot do + * anything about - it execpt count statistics + * and we are not counting it. + */ +int +BSP_uart_polled_status(int uart) +{ + unsigned char val; + + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + val = uread(uart, LSR); + + if(val & BI) + { + /* BREAK found, eat character */ + uread(uart, RBR); + return BSP_UART_STATUS_BREAK; + } + + if((val & (DR | OE | FE)) == 1) + { + /* No error, character present */ + return BSP_UART_STATUS_CHAR; + } + + if((val & (DR | OE | FE)) == 0) + { + /* Nothing */ + return BSP_UART_STATUS_NOCHAR; + } + + /* + * Framing or parity error + * eat character + */ + uread(uart, RBR); + + return BSP_UART_STATUS_ERROR; +} + + +/* + * Polled mode write function + */ +void +BSP_uart_polled_write(int uart, int val) +{ + unsigned char val1; + + /* Sanity check */ + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + for(;;) + { + if((val1=uread(uart, LSR)) & THRE) + { + break; + } + } + + uwrite(uart, THR, val & 0xff); + + return; +} + +void +BSP_output_char_via_serial(int val) +{ + BSP_uart_polled_write(BSPConsolePort, val); + if (val == '\n') BSP_uart_polled_write(BSPConsolePort,'\r'); +} + +/* + * Polled mode read function + */ +int +BSP_uart_polled_read(int uart) +{ + unsigned char val; + + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + for(;;) + { + if(uread(uart, LSR) & DR) + { + break; + } + } + + val = uread(uart, RBR); + + return (int)(val & 0xff); +} + +unsigned +BSP_poll_char_via_serial() +{ + return BSP_uart_polled_read(BSPConsolePort); +} + + +/* ================ Termios support =================*/ + +static volatile int termios_stopped_com1 = 0; +static volatile int termios_tx_active_com1 = 0; +static void* termios_ttyp_com1 = NULL; +static char termios_tx_hold_com1 = 0; +static volatile char termios_tx_hold_valid_com1 = 0; + +static volatile int termios_stopped_com2 = 0; +static volatile int termios_tx_active_com2 = 0; +static void* termios_ttyp_com2 = NULL; +static char termios_tx_hold_com2 = 0; +static volatile char termios_tx_hold_valid_com2 = 0; + +/* + * Set channel parameters + */ +void +BSP_uart_termios_set(int uart, void *ttyp) +{ + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); + + if(uart == BSP_UART_COM1) + { + termios_stopped_com1 = 0; + termios_tx_active_com1 = 0; + termios_ttyp_com1 = ttyp; + termios_tx_hold_com1 = 0; + termios_tx_hold_valid_com1 = 0; + } + else + { + termios_stopped_com2 = 0; + termios_tx_active_com2 = 0; + termios_ttyp_com2 = ttyp; + termios_tx_hold_com2 = 0; + termios_tx_hold_valid_com2 = 0; + } + + return; +} + +int +BSP_uart_termios_write_com1(int minor, const char *buf, int len) +{ + assert(buf != NULL); + + if(len <= 0) + { + return 0; + } + + /* If there TX buffer is busy - something is royally screwed up */ + assert((uread(BSP_UART_COM1, LSR) & THRE) != 0); + + if(termios_stopped_com1) + { + /* CTS low */ + termios_tx_hold_com1 = *buf; + termios_tx_hold_valid_com1 = 1; + return 0; + } + + /* Write character */ + uwrite(BSP_UART_COM1, THR, *buf & 0xff); + + /* Enable interrupts if necessary */ + if(!termios_tx_active_com1) + { + termios_tx_active_com1 = 1; + uwrite(BSP_UART_COM1, IER, + (RECEIVE_ENABLE | + TRANSMIT_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + } + + return 0; +} + +int +BSP_uart_termios_write_com2(int minor, const char *buf, int len) +{ + assert(buf != NULL); + + if(len <= 0) + { + return 0; + } + + + /* If there TX buffer is busy - something is royally screwed up */ + assert((uread(BSP_UART_COM2, LSR) & THRE) != 0); + + if(termios_stopped_com2) + { + /* CTS low */ + termios_tx_hold_com2 = *buf; + termios_tx_hold_valid_com2 = 1; + return 0; + } + + /* Write character */ + + uwrite(BSP_UART_COM2, THR, *buf & 0xff); + + /* Enable interrupts if necessary */ + if(!termios_tx_active_com2) + { + termios_tx_active_com2 = 1; + uwrite(BSP_UART_COM2, IER, + (RECEIVE_ENABLE | + TRANSMIT_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + } + + return 0; +} + + +void +BSP_uart_termios_isr_com1(void) +{ + unsigned char buf[40]; + int off, ret, vect; + + off = 0; + + for(;;) + { + vect = uread(BSP_UART_COM1, IIR) & 0xf; + + switch(vect) + { + case NO_MORE_INTR : + /* No more interrupts */ + if(off != 0) + { + /* Update rx buffer */ + rtems_termios_enqueue_raw_characters(termios_ttyp_com1, + (char *)buf, + off); + } + return; + case TRANSMITTER_HODING_REGISTER_EMPTY : + /* + * TX holding empty: we have to disable these interrupts + * if there is nothing more to send. + */ + + ret = rtems_termios_dequeue_characters(termios_ttyp_com1, 1); + + /* If nothing else to send disable interrupts */ + if(ret == 0) + { + uwrite(BSP_UART_COM1, IER, + (RECEIVE_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + termios_tx_active_com1 = 0; + } + break; + case RECEIVER_DATA_AVAIL : + case CHARACTER_TIMEOUT_INDICATION: + /* RX data ready */ + assert(off < sizeof(buf)); + buf[off++] = uread(BSP_UART_COM1, RBR); + break; + case RECEIVER_ERROR: + /* RX error: eat character */ + uartError(BSP_UART_COM1); + break; + default: + /* Should not happen */ + assert(0); + return; + } + } +} + +void +BSP_uart_termios_isr_com2() +{ + unsigned char buf[40]; + int off, ret, vect; + + off = 0; + + for(;;) + { + vect = uread(BSP_UART_COM2, IIR) & 0xf; + + switch(vect) + { + case NO_MORE_INTR : + /* No more interrupts */ + if(off != 0) + { + /* Update rx buffer */ + rtems_termios_enqueue_raw_characters(termios_ttyp_com2, + (char *)buf, + off); + } + return; + case TRANSMITTER_HODING_REGISTER_EMPTY : + /* + * TX holding empty: we have to disable these interrupts + * if there is nothing more to send. + */ + + ret = rtems_termios_dequeue_characters(termios_ttyp_com2, 1); + + /* If nothing else to send disable interrupts */ + if(ret == 0) + { + uwrite(BSP_UART_COM2, IER, + (RECEIVE_ENABLE | + RECEIVER_LINE_ST_ENABLE + ) + ); + termios_tx_active_com2 = 0; + } + break; + case RECEIVER_DATA_AVAIL : + case CHARACTER_TIMEOUT_INDICATION: + /* RX data ready */ + assert(off < sizeof(buf)); + buf[off++] = uread(BSP_UART_COM2, RBR); + break; + case RECEIVER_ERROR: + /* RX error: eat character */ + uartError(BSP_UART_COM2); + break; + default: + /* Should not happen */ + assert(0); + return; + } + } +} diff --git a/c/src/lib/libbsp/arm/shared/comm/uart.h b/c/src/lib/libbsp/arm/shared/comm/uart.h new file mode 100644 index 0000000000..d517109392 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/comm/uart.h @@ -0,0 +1,158 @@ + + +/* + * This software is Copyright (C) 1998 by T.sqware - all rights limited + * It is provided in to the public domain "as is", can be freely modified + * as far as this copyight notice is kept unchanged, but does not imply + * an endorsement by T.sqware of the product in which it is included. + * + * Copyright (c) Canon Research France SA.] + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + */ + +#ifndef _BSPUART_H +#define _BSPUART_H + +void BSP_uart_init(int uart, int baud, int hwFlow); +void BSP_uart_set_baud(int aurt, int baud); +void BSP_uart_intr_ctrl(int uart, int cmd); +void BSP_uart_throttle(int uart); +void BSP_uart_unthrottle(int uart); +int BSP_uart_polled_status(int uart); +void BSP_uart_polled_write(int uart, int val); +int BSP_uart_polled_read(int uart); +void BSP_uart_termios_set(int uart, void *ttyp); +int BSP_uart_termios_write_com1(int minor, const char *buf, int len); +int BSP_uart_termios_write_com2(int minor, const char *buf, int len); +void BSP_uart_termios_isr_com1(); +void BSP_uart_termios_isr_com2(); +void BSP_uart_dbgisr_com1(void); +void BSP_uart_dbgisr_com2(void); +extern unsigned BSP_poll_char_via_serial(void); +extern void BSP_output_char_via_serial(int val); +extern int BSPConsolePort; +extern int BSPBaseBaud; +/* + * Command values for BSP_uart_intr_ctrl(), + * values are strange in order to catch errors + * with assert + */ +#define BSP_UART_INTR_CTRL_DISABLE (0) +#define BSP_UART_INTR_CTRL_GDB (0xaa) /* RX only */ +#define BSP_UART_INTR_CTRL_ENABLE (0xbb) /* Normal operations */ +#define BSP_UART_INTR_CTRL_TERMIOS (0xcc) /* RX & line status */ + +/* Return values for uart_polled_status() */ +#define BSP_UART_STATUS_ERROR (-1) /* No character */ +#define BSP_UART_STATUS_NOCHAR (0) /* No character */ +#define BSP_UART_STATUS_CHAR (1) /* Character present */ +#define BSP_UART_STATUS_BREAK (2) /* Break point is detected */ + +/* PC UART definitions */ +#define BSP_UART_COM1 (0) +#define BSP_UART_COM2 (1) + +/* + * Base IO for UART + */ + +#define COM1_BASE_IO 0x3F8 +#define COM2_BASE_IO 0x2F8 + +/* + * Offsets from base + */ + +/* DLAB 0 */ +#define RBR RSRBR /* Rx Buffer Register (read) */ +#define THR RSTHR /* Tx Buffer Register (write) */ +#define IER RSIER /* Interrupt Enable Register */ + +/* DLAB X */ +#define IIR RSIIR /* Interrupt Ident Register (read) */ +#define FCR RSFCR /* FIFO Control Register (write) */ +#define LCR RSLCR /* Line Control Register */ +#define LSR RSLSR /* Line Status Register */ + +/* DLAB 1 */ +#define DLL RSDLL /* Divisor Latch, LSB */ +#define DLM RSDLH /* Divisor Latch, MSB */ + +/* Uart control */ +#define CNT RSCNT /* General Control register */ + +/* + * define bit for CNT + */ +#define UART_ENABLE 1 +#define PAD_ENABLE 2 + +/* + * Interrupt source definition via IIR + */ +#define NO_MORE_INTR 1 +#define TRANSMITTER_HODING_REGISTER_EMPTY 2 +#define RECEIVER_DATA_AVAIL 4 +#define RECEIVER_ERROR 6 +#define CHARACTER_TIMEOUT_INDICATION 12 + +/* + * Bits definition of IER + */ +#define RECEIVE_ENABLE 0x1 +#define TRANSMIT_ENABLE 0x2 +#define RECEIVER_LINE_ST_ENABLE 0x4 +#define INTERRUPT_DISABLE 0x0 + +/* + * Bits definition of the Line Status Register (LSR) + */ +#define DR 0x01 /* Data Ready */ +#define OE 0x02 /* Overrun Error */ +#define PE 0x04 /* Parity Error */ +#define FE 0x08 /* Framing Error */ +#define BI 0x10 /* Break Interrupt */ +#define THRE 0x20 /* Transmitter Holding Register Empty */ +#define TEMT 0x40 /* Transmitter Empty */ +#define ERFIFO 0x80 /* Error receive Fifo */ + +/* + * Bits definition of the Line Control Register (LCR) + */ +#define CHR_5_BITS 0 +#define CHR_6_BITS 1 +#define CHR_7_BITS 2 +#define CHR_8_BITS 3 + +#define WL 0x03 /* Word length mask */ +#define STB 0x04 /* 1 Stop Bit, otherwise 2 Stop Bits */ +#define PEN 0x08 /* Parity Enabled */ +#define EPS 0x10 /* Even Parity Select, otherwise Odd */ +#define SP 0x20 /* Stick Parity */ +#define BCB 0x40 /* Break Control Bit */ +#define DLAB 0x80 /* Enable Divisor Latch Access */ + +/* + * Bits definition of the FIFO Control Register : WD16C552 or NS16550 + */ + +#define FIFO_CTRL 0x01 /* Set to 1 permit access to other bits */ +#define FIFO_EN 0x01 /* Enable the FIFO */ +#define XMIT_RESET 0x04 /* Transmit FIFO Reset */ +#define RCV_RESET 0x02 /* Receive FIFO Reset */ +#define FCR3 0x08 /* do not understand manual! */ + +#define RECEIVE_FIFO_TRIGGER1 0x0 /* trigger recieve interrupt after 1 byte */ +#define RECEIVE_FIFO_TRIGGER4 0x40 /* trigger recieve interrupt after 4 byte */ +#define RECEIVE_FIFO_TRIGGER8 0x80 /* trigger recieve interrupt after 8 byte */ +#define RECEIVE_FIFO_TRIGGER12 0xc0 /* trigger recieve interrupt after 14 byte */ +#define TRIG_LEVEL 0xc0 /* Mask for the trigger level */ + +#endif /* _BSPUART_H */ + + + diff --git a/c/src/lib/libbsp/arm/shared/io/.cvsignore b/c/src/lib/libbsp/arm/shared/io/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/io/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/shared/io/Makefile.am b/c/src/lib/libbsp/arm/shared/io/Makefile.am new file mode 100644 index 0000000000..2c543cc77d --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/io/Makefile.am @@ -0,0 +1,22 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +H_FILES = bspio.h + +C_FILES = printk.c + +$(PROJECT_INCLUDE): + $(mkinstalldirs) $@ +$(PROJECT_INCLUDE)/%.h: %.h + $(INSTALL_DATA) $< $@ + +PREINSTALL_FILES += $(PROJECT_INCLUDE) $(H_FILES:%.h=$(PROJECT_INCLUDE)/%.h) + +all: $(PREINSTALL_FILES) + +EXTRA_DIST = bspio.h printk.c + +include $(top_srcdir)/../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/shared/io/bspio.h b/c/src/lib/libbsp/arm/shared/io/bspio.h new file mode 100644 index 0000000000..b4ef8510da --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/io/bspio.h @@ -0,0 +1,38 @@ +/* bspIo.h + * + * This include file contains declaration of interface that + * will be provided by the file contained in this directory. + * + * + * COPYRIGHT (c) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ +#ifndef _LIBBSP_ARM_SHARED_IO_BSP_IO_H +#define _LIBBSP_ARM_SHARED_IO_BSP_IO_H + +/* + * All the functions declared as extern after this comment + * MUST be implemented in each BSP. Using this function, + * this directory contains shared code that export higher level + * functionnality described after the next command. + */ +typedef void (*BSP_output_char_function_type) (char c); +typedef char (*BSP_polling_getchar_function_type) (void); + +extern BSP_output_char_function_type BSP_output_char; +extern BSP_polling_getchar_function_type BSP_poll_char; +/* + * All the function declared as extern after this comment + * are available for each ix86 BSP by compiling and linking + * the files contained in this directory PROVIDED definition + * and initialisation of the previous variable are done. + */ +void printk(char *fmt, ...); + +#endif diff --git a/c/src/lib/libbsp/arm/shared/io/printk.c b/c/src/lib/libbsp/arm/shared/io/printk.c new file mode 100644 index 0000000000..d53699a3de --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/io/printk.c @@ -0,0 +1,113 @@ +/*-------------------------------------------------------------------------+ +| printk.c - ARM BSP ++--------------------------------------------------------------------------+ +| +| COPYRIGHT (c) 2000 Canon Research France SA. +| Emmanuel Raguet, mailto:raguet@crf.canon.fr +| +| The license and distribution terms for this file may be +| found in found in the file LICENSE in this distribution or at +| http://www.OARcorp.com/rtems/license.html. +| +| $Id$ ++--------------------------------------------------------------------------*/ + + +#include +#include +#include + +/*-------------------------------------------------------------------------+ +| Function: printNum +| Description: print number in a given base. +| Global Variables: None. +| Arguments: num - number to print, base - base used to print the number. +| Returns: Nothing. ++--------------------------------------------------------------------------*/ +static void +printNum(long unsigned int num, int base, int sign) +{ + long unsigned int n; + int count; + char toPrint[20]; + + if ( (sign == 1) && ((long)num < 0) ) { + BSP_output_char('-'); + num = -num; + } + + count = 0; + while ((n = num / base) > 0) { + toPrint[count++] = (num - (n*base)); + num = n ; + } + toPrint[count++] = num; + + for (n = 0; n < count; n++){ + BSP_output_char("0123456789ABCDEF"[(int)(toPrint[count-(n+1)])]); + } +} /* printNum */ + + +/*-------------------------------------------------------------------------+ +| Function: printk +| Description: a simplified version of printf intended for use when the + console is not yet initialized or in ISR's. +| Global Variables: None. +| Arguments: as in printf: fmt - format string, ... - unnamed arguments. +| Returns: Nothing. ++--------------------------------------------------------------------------*/ +void +printk(char *fmt, ...) +{ + va_list ap; /* points to each unnamed argument in turn */ + char c, *str; + int lflag, base, sign; + + _CPU_ISR_Disable(level); + + va_start(ap, fmt); /* make ap point to 1st unnamed arg */ + for (; *fmt != '\0'; fmt++) + { + lflag = 0; + base = 0; + sign = 0; + if (*fmt == '%') + { + if ((c = *++fmt) == 'l') + { + lflag = 1; + c = *++fmt; + } + switch (c) + { + case 'o': case 'O': base = 8; sign = 0; break; + case 'd': case 'D': base = 10; sign = 1; break; + case 'u': case 'U': base = 10; sign = 0; break; + case 'x': case 'X': base = 16; sign = 0; break; + case 's': + for (str = va_arg(ap, char *); *str; str++) + BSP_output_char(*str); + break; + case 'c': + BSP_output_char(va_arg(ap, char)); + break; + default: + BSP_output_char(c); + break; + } /* switch*/ + + if (base) + printNum(lflag ? va_arg(ap, long int) : (long int)va_arg(ap, int), + base, sign); + } + else + { + BSP_output_char(*fmt); + } + } + va_end(ap); /* clean up when done */ + _CPU_ISR_Enable(level); + +} /* printk */ + diff --git a/c/src/lib/libbsp/arm/shared/irq/.cvsignore b/c/src/lib/libbsp/arm/shared/irq/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/irq/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/arm/shared/irq/Makefile.am b/c/src/lib/libbsp/arm/shared/irq/Makefile.am new file mode 100644 index 0000000000..89925fdfd0 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/irq/Makefile.am @@ -0,0 +1,14 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +C_FILES = irq_init.c +S_FILES = irq_asm.S + +all: + +EXTRA_DIST = irq_asm.S irq_init.c + +include $(top_srcdir)/../../../../../automake/local.am diff --git a/c/src/lib/libbsp/arm/shared/irq/irq_asm.S b/c/src/lib/libbsp/arm/shared/irq/irq_asm.S new file mode 100644 index 0000000000..e6b740eb9a --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/irq/irq_asm.S @@ -0,0 +1,109 @@ +/* irq_asm.S + * + * This file contains the implementation of the IRQ handler + * + * CopyRight (C) 2000 Canon Research France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include "asm.h" +#define __asm__ +#include + + +/* + * WARNING : register r5 is important. If you need to use it, + * to forget to save it !!!!!!!!!! + */ + + .globl _ISR_Handler +_ISR_Handler: + stmdb sp!, {r4,r5,lr} /* save regs on INT stack */ + mrs r4, cpsr /* save current CSPR */ + mov r5, r4 /* copy CSPR */ + orr r4, r4, #3 + msr cpsr, r4 /* switch to SVC mode */ + + stmdb sp!, {r0-r3,r12,r14} /* save scratch regs on SVC stack */ + + msr cpsr, r5 /* switch back to INT mode */ + + ldr r0, =_ISR_Nest_level /* one nest level deeper */ + ldr r1, [r0] + add r1, r1,#1 + str r1, [r0] + + ldr r0, =_Thread_Dispatch_disable_level /* disable multitasking */ + ldr r1, [r0] + add r1, r1,#1 + str r1, [r0] + + b ExecuteITHandler /* BSP specific function to INT handler */ + + .globl ReturnFromHandler +ReturnFromHandler : + ldr r0, =_ISR_Nest_level /* one less nest level */ + ldr r1, [r0] + sub r1, r1,#1 + str r1, [r0] + + ldr r0, =_Thread_Dispatch_disable_level /* unnest multitasking */ + ldr r1, [r0] + sub r1, r1,#1 + str r1, [r0] + + cmp r1, #0 /* is dispatch enabled */ + bne exitit /* Yes, then exit */ + + ldr r0, =_Context_Switch_necessary /* task switch necessary ? */ + ldr r1, [r0] + cmp r1, #0 + bne schedule /* yes, call scheduler */ + + ldr r0, =_ISR_Signals_to_thread_executing + ldr r1, [r0] /* signals sent to Run_thread */ + cmp r1, #0 /* while in interrupt handler ? */ + beq exitit /* No, exit */ + +bframe: + mov r1, #0 /* _ISR_Signals_to_thread_executing = FALSE */ + str r1, [r0] + /* + * At this point, we need a complete exception context for the + * current thread. We need to complete the interrupt exception + * with the "not-yet-saved" registers + */ + /* + * currently exception context = interrupt handler + * it needs to be optimized + */ + bl _ThreadProcessSignalsFromIrq + b exitit + +schedule: + /* + * the scratch registers have already been saved and we are already + * back on the thread system stack. So we can call _Thread_Displatch + * directly + */ + bl _Thread_Dispatch + /* + * fall through exit to restore complete contex (scratch registers + * eip, CS, Flags). + */ +exitit: + b AckControler /* BSP specific function to ack PIC */ + + .globl ReturnFromAck +ReturnFromAck : + ldmia sp!, {r0-r3,r12,r14} /* restore regs from SVC stack */ + msr cpsr, r5 /* switch back to INT mode */ + ldmia sp!, {r4,r5,lr} /* restore regs from INT stack */ + subs pc,r14,#4 /* return */ + diff --git a/c/src/lib/libbsp/arm/shared/irq/irq_init.c b/c/src/lib/libbsp/arm/shared/irq/irq_init.c new file mode 100644 index 0000000000..a815657f8d --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/irq/irq_init.c @@ -0,0 +1,51 @@ +/* irq_init.c + * + * This file contains the implementation of rtems initialization + * related to interrupt handling. + * + * CopyRight (C) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include +#include +#include +#include + +/* + * default int vector + */ +extern void _ISR_Handler(); + +void default_int_handler() +{ + printk("raw_idt_notify has been called \n"); +} + +void rtems_irq_mngt_init() +{ + int i; + long *vectorTable; + + vectorTable = VECTOR_TABLE; + + _CPU_ISR_Disable(level); + + /* First, connect the ISR_Handler for IRQ and FIQ interrupts */ + _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ISR_Handler, NULL); + _CPU_ISR_install_vector(ARM_EXCEPTION_FIQ, _ISR_Handler, NULL); + + /* Initialize the vector table contents with default handler */ + for (i=0; i