diff options
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/start/.cvsignore | 2 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/start/Makefile.am | 31 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/start/start.S | 277 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/.cvsignore | 2 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/Makefile.am | 47 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/bspstart.c | 146 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/linkcmds | 187 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom | 200 | ||||
-rw-r--r-- | c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom2ram | 203 |
9 files changed, 1095 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sh/gensh4/start/.cvsignore b/c/src/lib/libbsp/sh/gensh4/start/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/start/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/sh/gensh4/start/Makefile.am b/c/src/lib/libbsp/sh/gensh4/start/Makefile.am new file mode 100644 index 0000000000..1e78a4cc06 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/start/Makefile.am @@ -0,0 +1,31 @@ +## +## $Id$ +## + +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) + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/compile.am +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o: $(PGMS) + $(INSTALL_DATA) $< $@ + +TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o + +all-local: $(ARCH) $(OBJS) $(TMPINSTALL_FILES) + +EXTRA_DIST = start.S + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/sh/gensh4/start/start.S b/c/src/lib/libbsp/sh/gensh4/start/start.S new file mode 100644 index 0000000000..17ec351a08 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/start/start.S @@ -0,0 +1,277 @@ +/* + * start.S -- Initialization code for SH7750 generic BSP + * + * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia + * Author: Victor V. Vengerov <vvv@oktet.ru> + * + * Based on work: + * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and + * Bernd Becker (becker@faw.uni-ulm.de) + * + * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Modified to reflect Hitachi EDK SH7045F: + * John M. Mills (jmills@tga.com) + * TGA Technologies, Inc. + * 100 Pinnacle Way, Suite 140 + * Norcross, GA 30071 U.S.A. + * + * + * This modified file may be copied and distributed in accordance + * the above-referenced license. It is provided for critique and + * developmental purposes without any warranty nor representation + * by the authors or by TGA Technologies. + * + * COPYRIGHT (c) 1999-2001. + * On-Line Applications Research Corporation (OAR). + * + * 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 "asm.h" +#include "rtems/score/sh4_regs.h" +#include "rtems/score/sh7750_regs.h" + + BEGIN_CODE + PUBLIC(start) + +/* + * Algorithm of the first part of the start(): + * + * 1. Initialize stack + * 2. Are we from reset or from gdb? Set value for boot_mode in r9. + * 3. Initialize hardware if we are from reset. Cache is off. + * 4. Copy data from flash to ram; set up boot mode and jump to real address. + * 5. Zero out bss. + * 6. Turn memory cach on. + */ + +SYM (start): + ! install the stack pointer + mov.l stack_k,r15 + + mov.l initial_sr_k,r0 + ldc r0,ssr + ldc r0,sr + + ! let us see if we are from gdb stub or from power-on reset + bsr fake_func + nop +fake_func: + + sts pr, r0 + shlr8 r0 + mov.l reset_pc_value_shift_8_k, r1 + cmp/eq r0, r1 + movt r9 ! r9 == ! boot_mode + neg r9, r9 + add #1, r9 ! r9 == boot_mode + + ! what is in boot_mode? + cmp/pl r9 ! r9 > 0 -> T = 1 + + ! if boot_mode != SH4_BOOT_MODE_FLASH + bt hw_init_end + nop + +#if defined(START_HW_INIT) /* from $RTEMS_BSP.cfg */ + ! Initialize minimal hardware + ! to run hw_init we need to calculate its address + ! as it is before data coping + mov.l hw_init_k, r0 + mov.l copy_start_k, r1 + mov.l copy_end_k, r2 + cmp/ge r0, r1 + bt 0f + cmp/ge r0, r2 + bf 0f + ! if copy_start <= hw_init <= copy_end then + neg r1, r1 + mov.l copy_start_in_rom_k, r3 + add r1,r0 + add r3, r0 +0: + jsr @r0 + nop !delay slot +#endif /* START_HW_INIT */ +hw_init_end: + + ! copy data from rom to ram + mov.l copy_start_k, r0 + mov.l copy_end_k, r1 + mov.l copy_start_in_rom_k, r2 + + + ! if copy_from == copy_to do not copy anything + cmp/eq r0, r2 + bt real_address + nop + +copy_data_cycle: + cmp/ge r1, r0 + bt end_of_copy_data_cycle + nop + mov.l @r2+, r3 + mov.l r3, @r0 + add #4, r0 + bra copy_data_cycle + nop + +end_of_copy_data_cycle: + ! go to 0x8....... adresses + mov.l real_address_k, r0 + lds r0, pr + rts + nop +real_address: + ! write boot_mode to ram + mov.l boot_mode_k, r5 + mov.l r9, @r5 + +zero_bss: + ! zero out bss + mov.l __bss_start_k,r0 + mov.l __bss_end_k,r1 + mov #0,r2 +0: + mov.l r2,@r0 + add #4,r0 + cmp/ge r0,r1 + bt 0b + nop + + ! Turn cache on + mov.l cache_on_k, r0 + jsr @r0 + nop !delay slot + + ! Save old value of VBR register. We will need it to allow + ! debugger agent hook exceptions. + mov.l __VBR_Saved_k,r0 + stc vbr,r5 + mov.l r5,@r0 + ! Set up VBR register + mov.l _vbr_base_k,r0 + ldc r0,vbr + + ! initialise fpscr for gcc + mov.l set_fpscr_k, r1 + jsr @r1 + nop + + ! Set FPSCR register + mov.l initial_fpscr_k,r0 + lds r0,fpscr + + + ! call the mainline + mov #0,r4 ! argc + mov.l main_k,r0 + jsr @r0 + mov #0,r5 ! argv - can place in dead slot + + ! call exit + mov r0,r4 + mov.l exit_k,r0 + jsr @r0 + or r0,r0 + + .global _stop +_stop: + mov #11,r0 + mov #0,r4 + trapa #0x3f + nop +__stop: + bra __stop + nop + + END_CODE + + .align 2 +copy_start_k: + .long copy_start +copy_end_k: + .long copy_end +copy_start_in_rom_k: + .long copy_start_in_rom + +real_address_k: + .long real_address +set_fpscr_k: + .long ___set_fpscr +_vbr_base_k: + .long SYM(_vbr_base) +__VBR_Saved_k: + .long SYM(_VBR_Saved) +stack_k: + .long SYM(stack) +__bss_start_k: + .long __bss_start +__bss_end_k: + .LONG __bss_end +main_k: + .long SYM(boot_card) +exit_k: + .long SYM(_exit) + +#ifdef START_HW_INIT /* from $RTEMS_BSP.cfg */ +hw_init_k: + .long SYM(early_hw_init) +#endif /* START_HW_INIT */ + +cache_on_k: + .long SYM(bsp_cache_on) + +vects_k: + .long SYM(vectab) +vects_size: + .word 255 + + .align 2 +initial_sr_k: + .long SH4_SR_MD | SH4_SR_IMASK +initial_fpscr_k: +#ifdef __SH4__ + .long SH4_FPSCR_DN | SH4_FPSCR_PR | SH4_FPSCR_RM +#else + .long SH4_FPSCR_DN | SH4_FPSCR_RM +#endif + +reset_pc_value_shift_8_k: + .long 0xa00000 + +boot_mode_k: + .long _boot_mode + +#ifdef __ELF__ + .section .stack,"aw" +#else + .section .stack +#endif +SYM(stack): + .long 0xdeaddead + +#ifdef __ELF__ + .section .bss,"aw" +#else + .section .bss +#endif + + .global __sh4sim_dummy_register +__sh4sim_dummy_register: + .long 0 + + .section .data + .global _boot_mode +_boot_mode: + .long 0 + diff --git a/c/src/lib/libbsp/sh/gensh4/startup/.cvsignore b/c/src/lib/libbsp/sh/gensh4/startup/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/sh/gensh4/startup/Makefile.am b/c/src/lib/libbsp/sh/gensh4/startup/Makefile.am new file mode 100644 index 0000000000..39865c6ca9 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/Makefile.am @@ -0,0 +1,47 @@ +## +## $Id$ +## + +AUTOMAKE_OPTIONS = foreign 1.4 + +VPATH = @srcdir@:@srcdir@/../../shared:@srcdir@/../../../shared + +PGM = $(ARCH)/startup.rel + +C_FILES = bsplibc.c bsppost.c bspstart.c bspclean.c sbrk.c \ + bootcard.c main.c gnatinstallhandler.c + +C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o) + +OBJS = $(C_O_FILES) + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../../../../../../automake/compile.am +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(PROJECT_RELEASE)/lib/linkcmds: linkcmds + $(INSTALL_DATA) $< $@ + +$(PROJECT_RELEASE)/lib/linkcmds.rom: linkcmds.rom + $(INSTALL_DATA) $< $@ + +$(PROJECT_RELEASE)/lib/linkcmds.rom2ram: linkcmds.rom2ram + $(INSTALL_DATA) $< $@ + +$(PGM): $(OBJS) + $(make-rel) + +TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds $(PROJECT_RELEASE)/lib/linkcmds.rom \ + $(PROJECT_RELEASE)/lib/linkcmds.rom2ram + +all-local: $(ARCH) $(TMPINSTALL_FILES) $(OBJS) $(PGM) + +.PRECIOUS: $(PGM) + +EXTRA_DIST = bspclean.c bspstart.c linkcmds linkcmds.rom linkcmds.rom2ram + +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/sh/gensh4/startup/bspstart.c b/c/src/lib/libbsp/sh/gensh4/startup/bspstart.c new file mode 100644 index 0000000000..05788892cb --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/bspstart.c @@ -0,0 +1,146 @@ +/* + * This routine starts the application. It includes application, + * board, and monitor specific initialization and configuration. + * The generic CPU dependent initialization has been performed + * before this routine is invoked. + * + * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and + * Bernd Becker (becker@faw.uni-ulm.de) + * + * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * + * COPYRIGHT (c) 1998-2001. + * On-Line Applications Research Corporation (OAR). + * + * 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 <bsp.h> +#include <rtems/libio.h> + +#include <rtems/libcsupport.h> + +#include <string.h> + +/* + * The original table from the application and our copy of it with + * some changes. + */ + +extern void bsp_hw_init(void); + +extern rtems_configuration_table Configuration; + +rtems_configuration_table BSP_Configuration; + +rtems_cpu_table Cpu_table; + +char *rtems_progname; + +/* + * This variable is nesessary for console driver. + */ +unsigned32 SH4_CPU_HZ_Frequency = HZ; + +/* + * Use the shared implementations of the following routines + */ + +void bsp_postdriver_hook(void); +void bsp_libc_init( void *, unsigned32, int ); + +/* + * Function: bsp_pretasking_hook + * + * Description: + * BSP pretasking hook. Called just before drivers are initialized. + * Used to setup libc and install any BSP extensions. + * + * NOTES: + * Must not use libc (to do io) from here, since drivers are + * not yet initialized. + * + */ + +void bsp_pretasking_hook(void) +{ + bsp_libc_init(&HeapStart, (&HeapEnd - &HeapStart), 0); + +#ifdef RTEMS_DEBUG + rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); +#endif +} + +/* + * bsp_start + * + * This routine does the bulk of the system initialization. + */ + +void bsp_start(void) +{ + /* + For real boards you need to setup the hardware + and need to copy the vector table from rom to ram. + + Depending on the board this can ether be done from inside the rom + startup code, rtems startup code or here. + */ + +#ifndef START_HW_INIT + /* board hardware setup here, or from 'start.S' */ + bsp_hw_init(); +#endif + + /* + * Allocate the memory for the RTEMS Work Space. This can come from + * a variety of places: hard coded address, malloc'ed from outside + * RTEMS world (e.g. simulator or primitive memory manager), or (as + * typically done by stock BSPs) by subtracting the required amount + * of work space from the last physical address on the CPU board. + */ + + /* + * Need to "allocate" the memory for the RTEMS Workspace and + * tell the RTEMS configuration where it is. This memory is + * not malloc'ed. It is just "pulled from the air". + */ + + BSP_Configuration.work_space_start = (void *) &WorkSpaceStart ; + BSP_Configuration.work_space_size = + (unsigned32) &WorkSpaceEnd - + (unsigned32) &WorkSpaceStart ; + + /* + * initialize the CPU table for this BSP + */ + +#if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE ) + _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ; + _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ; + + /* This isn't used anywhere */ + Cpu_table.interrupt_stack_size = + (unsigned32) (&CPU_Interrupt_stack_high) - + (unsigned32) (&CPU_Interrupt_stack_low) ; +#endif + + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + Cpu_table.postdriver_hook = bsp_postdriver_hook; + +#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE ) + Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; +#endif + + Cpu_table.clicks_per_second = HZ ; +} diff --git a/c/src/lib/libbsp/sh/gensh4/startup/linkcmds b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds new file mode 100644 index 0000000000..6a0342b538 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds @@ -0,0 +1,187 @@ +/* + * This file contains GNU linker directives for an general SH4 + * board. + * + * Variations in memory size and allocation can be made by + * overriding some values with linker command-line arguments. + * + * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia + * Author: Victor V. Vengerov <vvv@oktet.ru> + * + * 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. + * + * $Id$ + */ + + +OUTPUT_FORMAT("elf32-shl", "elf32-shl", + "elf32-shl") +OUTPUT_ARCH(sh) +ENTRY(_start) +/* Do we need any of these for elf? + __DYNAMIC = 0; */ + +_HeapSize = DEFINED(_HeapSize) ? _HeapSize : (2 * 1024 * 1024); +_WorkspaceSize = DEFINED(_WorkspaceSize) ? _WorkspaceSize : (1024 * 1024); + +/* + * Area assignments: + * Area 0: Flash memory, SRAM interface + * Area 1: GDC + * Area 2: SDRAM + * Area 3-6: unused + */ +MEMORY +{ + ram : o = 0x88100000, l = 7M + rom : o = 0x80000000, l = 4M +} + +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + .init : + { + KEEP (*(.init)) + } =0 + .text : + { + *(.text) + *(.text.*) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + } > ram + _etext = .; + PROVIDE (etext = .); + .fini : + { + KEEP (*(.fini)) + } =0 + .rodata : + { + *(.rodata) + *(.rodata.*) + *(.gnu.linkonce.r*) + } > ram + .ctors : + { + ___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)) + ___ctors_end = .; + } > ram + .dtors : + { + ___dtors = .; + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + ___dtors_end = .; + copy_start_in_rom = .; + } > ram + + /* 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(128) + (. & (128 - 1)); + .data : + { + copy_start = .; + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + SORT(CONSTRUCTORS) + copy_end = .; + } > ram + .eh_frame : { *(.eh_frame) } > 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. */ + .bss : + { + __bss_start = .; + *(.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); + __bss_end = .; + } > ram + + . = ALIGN(16); + _HeapStart = . ; + . = . + _HeapSize ; + PROVIDE( _HeapEnd = . ); + + . = ALIGN(16); + _WorkSpaceStart = . ; + . = . + _WorkspaceSize ; + PROVIDE(_WorkSpaceEnd = .); + + . = ALIGN(16); + .stack . : { + . = . + 4096; + } + + . = ALIGN(16); + _CPU_Interrupt_stack_low = . ; + _CPU_Interrupt_stack_high = _CPU_Interrupt_stack_low + 4096 ; + + /* 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 : { _stack = .; *(.stack) } + /* These must appear regardless of . */ +} diff --git a/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom new file mode 100644 index 0000000000..d7ae497fc0 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom @@ -0,0 +1,200 @@ +/* + * This file contains GNU linker directives for an general SH4 + * board. + * + * Variations in memory size and allocation can be made by + * overriding some values with linker command-line arguments. + * + * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia + * Author: Victor V. Vengerov <vvv@oktet.ru> + * + * 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. + * + * $Id$ + */ + + +OUTPUT_FORMAT("elf32-shl", "elf32-shl", + "elf32-shl") +OUTPUT_ARCH(sh) +ENTRY(_start) +/* Do we need any of these for elf? + __DYNAMIC = 0; */ + +_HeapSize = DEFINED(_HeapSize) ? _HeapSize : (2 * 1024 * 1024); +_WorkspaceSize = DEFINED(_WorkspaceSize) ? _WorkspaceSize : (1024 * 1024); + +/* + * Area assignments: + * Area 0: Flash memory, SRAM interface + * Area 1: GDC + * Area 2: SDRAM + * Area 3-6: unused + */ +MEMORY +{ +/* + * Real values + */ + ram : o = 0x88000000, l = 8M + rom : o = 0x80000000, l = 4M +/* + * Fake values to test from gdb + */ +/* + ram : o = 0x88100000, l = 4M + rom : o = 0x88500000, l = 3M +*/ +} + +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + .init : + { + KEEP (*(.init)) + } =0 + .text : + { + *(.text) + *(.text.*) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + } > rom + _etext = .; + PROVIDE (etext = .); + .fini : + { + KEEP (*(.fini)) + } =0 + .rodata : + { + *(.rodata) + *(.rodata.*) + *(.gnu.linkonce.r*) + . = ALIGN(32); + } > rom + .ctors : + { + ___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)) + ___ctors_end = .; + } > rom + .dtors : + { + ___dtors = .; + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + ___dtors_end = .; + copy_start_in_rom = .; + } > rom + + /* 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(128) + (. & (128 - 1)); + .data : AT(LOADADDR(.dtors) + SIZEOF(.dtors)) + { + copy_start = .; + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + SORT(CONSTRUCTORS) + copy_end = .; + } > ram + .eh_frame : { *(.eh_frame) } > 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. */ + .bss : + { + __bss_start = .; + *(.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); + __bss_end = .; + } > ram + + . = ALIGN(16); + _HeapStart = . ; + . = . + _HeapSize ; + PROVIDE( _HeapEnd = . ); + + . = ALIGN(16); + _WorkSpaceStart = . ; + . = . + _WorkspaceSize ; + PROVIDE(_WorkSpaceEnd = .); + + . = ALIGN(16); + .stack . : { + stack_start = .; + . = . + 4096; + stack_end = .; + } + + . = ALIGN(16); + _CPU_Interrupt_stack_low = . ; + _CPU_Interrupt_stack_high = _CPU_Interrupt_stack_low + 4096 ; + + /* 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 : { _stack = .; *(.stack) } + /* These must appear regardless of . */ +} diff --git a/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom2ram b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom2ram new file mode 100644 index 0000000000..b2cd920230 --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh4/startup/linkcmds.rom2ram @@ -0,0 +1,203 @@ +/* + * This file contains GNU linker directives for an general SH4 + * board. + * + * Variations in memory size and allocation can be made by + * overriding some values with linker command-line arguments. + * + * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia + * Author: Victor V. Vengerov <vvv@oktet.ru> + * + * 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. + * + * $Id$ + */ + + +OUTPUT_FORMAT("elf32-shl", "elf32-shl", + "elf32-shl") +OUTPUT_ARCH(sh) +ENTRY(_start) +/* Do we need any of these for elf? + __DYNAMIC = 0; */ + +_HeapSize = DEFINED(_HeapSize) ? _HeapSize : (2 * 1024 * 1024); +_WorkspaceSize = DEFINED(_WorkspaceSize) ? _WorkspaceSize : (1024 * 1024); + +/* + * Area assignments: + * Area 0: Flash memory, SRAM interface + * Area 1: GDC + * Area 2: SDRAM + * Area 3-6: unused + */ +MEMORY +{ +/* + * Real values + */ + ram : o = 0x88000000, l = 8M + rom : o = 0x80000000, l = 4M +/* + * Fake values to test from gdb + */ +/* + ram : o = 0x88100000, l = 4M + rom : o = 0x88500000, l = 3M +*/ +} + +SECTIONS +{ + rom : { + copy_start_in_rom = .; + } >rom + + /* Read-only sections, merged into text segment: */ + .init : + { + KEEP (*(.init)) + } =0 + .text : AT(copy_start_in_rom) + { + copy_start = .; + *(.text) + *(.text.*) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + } > ram + _etext = .; + PROVIDE (etext = .); + .fini : + { + KEEP (*(.fini)) + } =0 + .rodata : AT(LOADADDR(.text) + SIZEOF(.text)) + { + *(.rodata) + *(.rodata.*) + *(.gnu.linkonce.r*) + . = ALIGN(32); + } > ram + .ctors : AT(LOADADDR(.rodata) + SIZEOF(.rodata)) + { + ___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)) + ___ctors_end = .; + } > ram + .dtors : AT(LOADADDR(.ctors) + SIZEOF(.ctors)) + { + ___dtors = .; + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + ___dtors_end = .; + } > ram + + /* 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(128) + (. & (128 - 1)); + .data : AT(LOADADDR(.dtors) + SIZEOF(.dtors)) + { + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + SORT(CONSTRUCTORS) + copy_end = .; + } > ram + .eh_frame : { *(.eh_frame) } > 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. */ + .bss : + { + __bss_start = .; + *(.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); + __bss_end = .; + } > ram + + . = ALIGN(16); + _HeapStart = . ; + . = . + _HeapSize ; + PROVIDE( _HeapEnd = . ); + + . = ALIGN(16); + _WorkSpaceStart = . ; + . = . + _WorkspaceSize ; + PROVIDE(_WorkSpaceEnd = .); + + . = ALIGN(16); + .stack . : { + stack_start = .; + . = . + 4096; + stack_end = .; + } + + . = ALIGN(16); + _CPU_Interrupt_stack_low = . ; + _CPU_Interrupt_stack_high = _CPU_Interrupt_stack_low + 4096 ; + + /* 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 : { _stack = .; *(.stack) } + /* These must appear regardless of . */ +} |