mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-09-23 10:36:25 +08:00
2011-11-08 Sebastian Huber <sebastian.huber@embedded-brains.de>
* shared/startup/bsp-start-copy-sections.c, shared/startup/bsp-start-memcpy.S: New files. * shared/include/start.h: Declare bsp_start_copy_sections(). * shared/start/start.S, shared/include/linker-symbols.h: Moved content. Support for ARMv7-M.
This commit is contained in:
Sebastian Huber
@@ -1,3 +1,11 @@
|
||||
2011-11-08 Sebastian Huber <sebastian.huber@embedded-brains.de>
|
||||
|
||||
* shared/startup/bsp-start-copy-sections.c,
|
||||
shared/startup/bsp-start-memcpy.S: New files.
|
||||
* shared/include/start.h: Declare bsp_start_copy_sections().
|
||||
* shared/start/start.S, shared/include/linker-symbols.h: Moved
|
||||
content. Support for ARMv7-M.
|
||||
|
||||
2011-09-24 Sebastian Huber <sebastian.huber@embedded-brains.de>
|
||||
|
||||
* acinclude.m4: Added lm3s69xx BSP.
|
||||
|
||||
@@ -116,6 +116,10 @@ LINKER_SYMBOL(bsp_vector_table_begin)
|
||||
LINKER_SYMBOL(bsp_vector_table_end)
|
||||
LINKER_SYMBOL(bsp_vector_table_size)
|
||||
|
||||
LINKER_SYMBOL(bsp_start_vector_table_begin)
|
||||
LINKER_SYMBOL(bsp_start_vector_table_end)
|
||||
LINKER_SYMBOL(bsp_start_vector_table_size)
|
||||
|
||||
#define BSP_FAST_TEXT_SECTION __attribute__((section(".bsp_fast_text")))
|
||||
|
||||
#define BSP_FAST_DATA_SECTION __attribute__((section(".bsp_fast_data")))
|
||||
|
||||
@@ -7,12 +7,13 @@
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2008, 2009
|
||||
* embedded brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* D-82178 Puchheim
|
||||
* Germany
|
||||
* <rtems@embedded-brains.de>
|
||||
* Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
|
||||
*
|
||||
* embedded brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* 82178 Puchheim
|
||||
* Germany
|
||||
* <rtems@embedded-brains.de>
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
@@ -77,6 +78,11 @@ void bsp_start_memcpy(int *dest, const int *src, size_t n);
|
||||
*/
|
||||
void bsp_start_memcpy_arm(int *dest, const int *src, size_t n);
|
||||
|
||||
/**
|
||||
* @brief Copies all standard sections from the load to the runtime area.
|
||||
*/
|
||||
void bsp_start_copy_sections(void);
|
||||
|
||||
/** @} */
|
||||
|
||||
#ifdef __cplusplus
|
||||
|
||||
@@ -5,15 +5,17 @@
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2008
|
||||
* Embedded Brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* D-82178 Puchheim
|
||||
* Germany
|
||||
* rtems@embedded-brains.de
|
||||
* Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
|
||||
*
|
||||
* The license and distribution terms for this file may be found in the file
|
||||
* LICENSE in this distribution or at http://www.rtems.com/license/LICENSE.
|
||||
* embedded brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* 82178 Puchheim
|
||||
* Germany
|
||||
* <rtems@embedded-brains.de>
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.com/license/LICENSE.
|
||||
*/
|
||||
|
||||
#include <rtems/asm.h>
|
||||
@@ -21,30 +23,34 @@
|
||||
#include <rtems/score/cpu.h>
|
||||
|
||||
#include <bspopts.h>
|
||||
#include <bsp/irq.h>
|
||||
#include <bsp/linker-symbols.h>
|
||||
|
||||
/* External symbols */
|
||||
/* External symbols */
|
||||
.extern bsp_reset
|
||||
.extern boot_card
|
||||
.extern bsp_start_hook_0
|
||||
.extern bsp_start_hook_1
|
||||
|
||||
.extern bsp_reset
|
||||
.extern boot_card
|
||||
.extern bsp_start_hook_0
|
||||
.extern bsp_start_hook_1
|
||||
/* Global symbols */
|
||||
.globl _start
|
||||
.globl bsp_start_vector_table_begin
|
||||
.globl bsp_start_vector_table_end
|
||||
.globl bsp_start_vector_table_size
|
||||
.globl bsp_vector_table_size
|
||||
|
||||
/* Global symbols */
|
||||
.section ".bsp_start_text", "ax"
|
||||
|
||||
.globl _start
|
||||
.globl bsp_start_memcpy
|
||||
#if defined(ARM_MULTILIB_ARCH_V4)
|
||||
|
||||
.section ".bsp_start_text", "ax"
|
||||
|
||||
.arm
|
||||
.arm
|
||||
|
||||
/*
|
||||
* This is the exception vector table and the pointers to the default
|
||||
* exceptions handlers.
|
||||
*/
|
||||
|
||||
vector_block:
|
||||
bsp_start_vector_table_begin:
|
||||
|
||||
ldr pc, handler_addr_reset
|
||||
ldr pc, handler_addr_undef
|
||||
@@ -94,6 +100,8 @@ handler_addr_fiq:
|
||||
|
||||
.word reset
|
||||
|
||||
bsp_start_vector_table_end:
|
||||
|
||||
/* Start entry */
|
||||
|
||||
_start:
|
||||
@@ -169,7 +177,7 @@ bsp_start_hook_0_done:
|
||||
*/
|
||||
|
||||
ldr r0, =bsp_vector_table_begin
|
||||
adr r1, vector_block
|
||||
adr r1, bsp_start_vector_table_begin
|
||||
ldmia r1!, {r2-r9}
|
||||
stmia r0!, {r2-r9}
|
||||
ldmia r1!, {r2-r9}
|
||||
@@ -198,64 +206,58 @@ reset:
|
||||
SWITCH_FROM_ARM_TO_THUMB r0
|
||||
b twiddle
|
||||
|
||||
DEFINE_FUNCTION_ARM(bsp_start_memcpy)
|
||||
#elif defined(ARM_MULTILIB_ARCH_V7M)
|
||||
|
||||
/* Return if dest == src */
|
||||
cmp r0, r1
|
||||
#ifdef __thumb__
|
||||
bxeq lr
|
||||
#else
|
||||
moveq pc, lr
|
||||
#endif
|
||||
.syntax unified
|
||||
|
||||
/* Return if length is zero */
|
||||
mov r3, #0
|
||||
cmp r3, r2
|
||||
#ifdef __thumb__
|
||||
bxeq lr
|
||||
#else
|
||||
moveq pc, lr
|
||||
#endif
|
||||
.extern bsp_stack_main_end
|
||||
|
||||
/* Save non-volatile registers */
|
||||
push {r4-r8, lr}
|
||||
.thumb
|
||||
|
||||
/* Copy worker routine to stack */
|
||||
adr ip, bsp_start_memcpy_begin
|
||||
ldm ip, {r3-r8}
|
||||
push {r3-r8}
|
||||
bsp_start_vector_table_begin:
|
||||
|
||||
/* Execute worker routine */
|
||||
mov r3, #0
|
||||
mov ip, sp
|
||||
mov lr, pc
|
||||
#ifdef __thumb__
|
||||
bx ip
|
||||
#else
|
||||
mov pc, ip
|
||||
#endif
|
||||
.word bsp_stack_main_end
|
||||
.word _start /* Reset */
|
||||
.word bsp_reset /* NMI */
|
||||
.word bsp_reset /* Hard Fault */
|
||||
.word bsp_reset /* MPU Fault */
|
||||
.word bsp_reset /* Bus Fault */
|
||||
.word bsp_reset /* Usage Fault */
|
||||
.word bsp_reset /* Reserved */
|
||||
.word bsp_reset /* Reserved */
|
||||
.word bsp_reset /* Reserved */
|
||||
.word bsp_reset /* Reserved */
|
||||
.word bsp_reset /* SVC */
|
||||
.word bsp_reset /* Debug Monitor */
|
||||
.word bsp_reset /* Reserved */
|
||||
.word bsp_reset /* PendSV */
|
||||
.word bsp_reset /* SysTick */
|
||||
.rept BSP_INTERRUPT_VECTOR_MAX + 1
|
||||
.word bsp_reset /* IRQ */
|
||||
.endr
|
||||
|
||||
/* Restore stack and non-volatile registers */
|
||||
add sp, sp, #24
|
||||
pop {r4-r8, lr}
|
||||
bsp_start_vector_table_end:
|
||||
|
||||
/* Return */
|
||||
#ifdef __thumb__
|
||||
bx lr
|
||||
#else
|
||||
mov pc, lr
|
||||
#endif
|
||||
.thumb_func
|
||||
|
||||
bsp_start_memcpy_begin:
|
||||
_start:
|
||||
|
||||
/* Worker routine */
|
||||
ldr ip, [r1, r3]
|
||||
str ip, [r0, r3]
|
||||
add r3, r3, #4
|
||||
cmp r3, r2
|
||||
bcc bsp_start_memcpy_begin
|
||||
#ifdef __thumb__
|
||||
bx lr
|
||||
#else
|
||||
mov pc, lr
|
||||
#endif
|
||||
ldr sp, =bsp_stack_main_end
|
||||
ldr lr, =bsp_start_hook_0_done + 1
|
||||
b bsp_start_hook_0
|
||||
|
||||
bsp_start_hook_0_done:
|
||||
|
||||
bl bsp_start_hook_1
|
||||
movs r0, #0
|
||||
bl boot_card
|
||||
|
||||
twiddle:
|
||||
|
||||
bl bsp_reset
|
||||
b twiddle
|
||||
|
||||
#endif /* defined(ARM_MULTILIB_ARCH_V7M) */
|
||||
|
||||
.set bsp_start_vector_table_size, bsp_start_vector_table_end - bsp_start_vector_table_begin
|
||||
.set bsp_vector_table_size, bsp_start_vector_table_size
|
||||
|
||||
@@ -0,0 +1,68 @@
|
||||
/*
|
||||
* Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
|
||||
*
|
||||
* embedded brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* 82178 Puchheim
|
||||
* Germany
|
||||
* <rtems@embedded-brains.de>
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.com/license/LICENSE.
|
||||
*/
|
||||
|
||||
#include <bsp/start.h>
|
||||
#include <bsp/linker-symbols.h>
|
||||
|
||||
static void BSP_START_TEXT_SECTION bsp_start_clear_bss(void)
|
||||
{
|
||||
const int *end = (const int *) bsp_section_bss_end;
|
||||
int *out = (int *) bsp_section_bss_begin;
|
||||
|
||||
/* Clear BSS */
|
||||
while (out != end) {
|
||||
*out = 0;
|
||||
++out;
|
||||
}
|
||||
}
|
||||
|
||||
void BSP_START_TEXT_SECTION bsp_start_copy_sections(void)
|
||||
{
|
||||
/* Copy .text section */
|
||||
bsp_start_memcpy(
|
||||
(int *) bsp_section_text_begin,
|
||||
(const int *) bsp_section_text_load_begin,
|
||||
(size_t) bsp_section_text_size
|
||||
);
|
||||
|
||||
/* Copy .rodata section */
|
||||
bsp_start_memcpy(
|
||||
(int *) bsp_section_rodata_begin,
|
||||
(const int *) bsp_section_rodata_load_begin,
|
||||
(size_t) bsp_section_rodata_size
|
||||
);
|
||||
|
||||
/* Copy .data section */
|
||||
bsp_start_memcpy(
|
||||
(int *) bsp_section_data_begin,
|
||||
(const int *) bsp_section_data_load_begin,
|
||||
(size_t) bsp_section_data_size
|
||||
);
|
||||
|
||||
/* Copy .fast_text section */
|
||||
bsp_start_memcpy(
|
||||
(int *) bsp_section_fast_text_begin,
|
||||
(const int *) bsp_section_fast_text_load_begin,
|
||||
(size_t) bsp_section_fast_text_size
|
||||
);
|
||||
|
||||
/* Copy .fast_data section */
|
||||
bsp_start_memcpy(
|
||||
(int *) bsp_section_fast_data_begin,
|
||||
(const int *) bsp_section_fast_data_load_begin,
|
||||
(size_t) bsp_section_fast_data_size
|
||||
);
|
||||
|
||||
bsp_start_clear_bss();
|
||||
}
|
||||
@@ -0,0 +1,147 @@
|
||||
/**
|
||||
* @file
|
||||
*
|
||||
* @brief bsp_start_memcpy() implementation.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
|
||||
*
|
||||
* embedded brains GmbH
|
||||
* Obere Lagerstr. 30
|
||||
* 82178 Puchheim
|
||||
* Germany
|
||||
* <rtems@embedded-brains.de>
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.com/license/LICENSE.
|
||||
*/
|
||||
|
||||
#include <rtems/asm.h>
|
||||
#include <rtems/system.h>
|
||||
#include <rtems/score/cpu.h>
|
||||
|
||||
.section ".bsp_start_text", "ax"
|
||||
|
||||
#if defined(ARM_MULTILIB_ARCH_V4)
|
||||
|
||||
DEFINE_FUNCTION_ARM(bsp_start_memcpy)
|
||||
|
||||
/* Return if dest == src */
|
||||
cmp r0, r1
|
||||
#ifdef __thumb__
|
||||
bxeq lr
|
||||
#else
|
||||
moveq pc, lr
|
||||
#endif
|
||||
|
||||
/* Return if length is zero */
|
||||
mov r3, #0
|
||||
cmp r3, r2
|
||||
#ifdef __thumb__
|
||||
bxeq lr
|
||||
#else
|
||||
moveq pc, lr
|
||||
#endif
|
||||
|
||||
/* Save non-volatile registers */
|
||||
push {r4-r8, lr}
|
||||
|
||||
/* Copy worker routine to stack */
|
||||
adr ip, worker_begin
|
||||
ldm ip, {r3-r8}
|
||||
push {r3-r8}
|
||||
|
||||
/* Execute worker routine */
|
||||
mov r3, #0
|
||||
mov ip, sp
|
||||
mov lr, pc
|
||||
#ifdef __thumb__
|
||||
bx ip
|
||||
#else
|
||||
mov pc, ip
|
||||
#endif
|
||||
|
||||
/* Restore stack and non-volatile registers */
|
||||
add sp, sp, #24
|
||||
pop {r4-r8, lr}
|
||||
|
||||
/* Return */
|
||||
#ifdef __thumb__
|
||||
bx lr
|
||||
#else
|
||||
mov pc, lr
|
||||
#endif
|
||||
|
||||
worker_begin:
|
||||
|
||||
/* Worker routine */
|
||||
ldr ip, [r1, r3]
|
||||
str ip, [r0, r3]
|
||||
add r3, r3, #4
|
||||
cmp r3, r2
|
||||
bcc worker_begin
|
||||
#ifdef __thumb__
|
||||
bx lr
|
||||
#else
|
||||
mov pc, lr
|
||||
#endif
|
||||
|
||||
#elif defined(ARM_MULTILIB_ARCH_V7M)
|
||||
|
||||
.syntax unified
|
||||
|
||||
.align 2
|
||||
.globl bsp_start_memcpy
|
||||
.thumb
|
||||
.thumb_func
|
||||
.type bsp_start_memcpy, %function
|
||||
|
||||
bsp_start_memcpy:
|
||||
|
||||
/* Return if dest == src */
|
||||
cmp r0, r1
|
||||
beq return
|
||||
|
||||
/* Return if length is zero */
|
||||
movs r3, #0
|
||||
cmp r3, r2
|
||||
beq return
|
||||
|
||||
/* Save non-volatile registers */
|
||||
push {r4-r7, lr}
|
||||
|
||||
/* Copy worker routine to stack */
|
||||
adr r3, worker_begin
|
||||
ldm r3, {r4-r7}
|
||||
push {r4-r7}
|
||||
|
||||
/* Execute worker routine */
|
||||
add r3, sp, #1
|
||||
adds r2, r2, #3
|
||||
bic r2, r2, #3
|
||||
adds r2, r2, r1
|
||||
blx r3
|
||||
|
||||
/* Restore stack and non-volatile registers */
|
||||
add sp, sp, #16
|
||||
pop {r4-r7, lr}
|
||||
|
||||
return:
|
||||
|
||||
/* Return */
|
||||
bx lr
|
||||
|
||||
.align 2
|
||||
|
||||
worker_begin:
|
||||
|
||||
/* Worker routine */
|
||||
ldr r3, [r1], #4
|
||||
cmp r2, r1
|
||||
str r3, [r0], #4
|
||||
bne worker_begin
|
||||
bx lr
|
||||
|
||||
#endif /* defined(ARM_MULTILIB_ARCH_V7M) */
|
||||
Reference in New Issue
Block a user