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. --- .../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 +++++++++++++++++++++ 5 files changed, 495 insertions(+) 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 (limited to 'c/src/lib/libbsp/arm/arm_bare_bsp/startup') 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 . */ +} + + + + -- cgit v1.2.3