diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/arm/csb336/start/start.S | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/c/src/lib/libbsp/arm/csb336/start/start.S b/c/src/lib/libbsp/arm/csb336/start/start.S index 80bd30f80d..67c74b114a 100644 --- a/c/src/lib/libbsp/arm/csb336/start/start.S +++ b/c/src/lib/libbsp/arm/csb336/start/start.S @@ -2,7 +2,7 @@ * Cogent CSB336 startup code * * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com> - * + * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * @@ -16,7 +16,7 @@ #warning The call is "void boot_card(const char* cmdline);" #warning You need to pass a NULL. #warning Please check and remove these warnings. - + /* Some standard definitions...*/ .equ PSR_MODE_USR, 0x10 .equ PSR_MODE_FIQ, 0x11 @@ -33,25 +33,25 @@ .text .globl _start _start: - /* + /* * Since I don't plan to return to the bootloader, * I don't have to save the registers. * - * I'll just set the CPSR for SVC mode, interrupts + * I'll just set the CPSR for SVC mode, interrupts * off, and ARM instructions. */ mov r0, #(PSR_MODE_SVC | PSR_I | PSR_F) msr cpsr, r0 - + /* zero the bss */ ldr r1, =_bss_end_ ldr r0, =_bss_start_ -_bss_init: +_bss_init: mov r2, #0 cmp r0, r1 strlot r2, [r0], #4 - blo _bss_init /* loop while r0 < r1 */ + blo _bss_init /* loop while r0 < r1 */ /* --- Initialize stack pointer registers */ @@ -75,33 +75,33 @@ _bss_init: ldr r1, =_abt_stack_size ldr sp, =_abt_stack add sp, sp, r1 - + /* Enter UNDEF mode and set up the UNDEF stack pointer */ mov r0, #(PSR_MODE_UNDEF | PSR_I | PSR_F) /* No interrupts */ msr cpsr, r0 ldr r1, =_undef_stack_size ldr sp, =_undef_stack add sp, sp, r1 - + /* Set up the SVC stack pointer last and stay in SVC mode */ mov r0, #(PSR_MODE_SVC | PSR_I | PSR_F) /* No interrupts */ msr cpsr, r0 ldr r1, =_svc_stack_size ldr sp, =_svc_stack add sp, sp, r1 - sub sp, sp, #0x64 + sub sp, sp, #0x64 - /* + /* * Initialize the MMU. After we return, the MMU is enabled, * and memory may be remapped. I hope we don't remap this * memory away. */ ldr r0, =mem_map - bl mmu_init + bl mmu_init - /* + /* * Initialize the exception vectors. This includes the - * exceptions vectors (0x00000000-0x0000001c), and the + * exceptions vectors (0x00000000-0x0000001c), and the * pointers to the exception handlers (0x00000020-0x0000003c). */ mov r0, #0 @@ -114,7 +114,7 @@ _bss_init: /* Now we are prepared to start the BSP's C code */ bl boot_card - /* + /* * Theoretically, we could return to what started us up, * but we'd have to have saved the registers and stacks. * Instead, we'll just reset. @@ -124,13 +124,13 @@ _bss_init: /* We shouldn't get here. If we do, hang */ _hang: b _hang - -/* + +/* * This is the exception vector table and the pointers to * the functions that handle the exceptions. It's a total * of 16 words (64 bytes) */ -vector_block: +vector_block: ldr pc, Reset_Handler ldr pc, Undefined_Handler ldr pc, SWI_Handler @@ -142,7 +142,7 @@ vector_block: Reset_Handler: b bsp_reset Undefined_Handler: b Undefined_Handler -SWI_Handler: b SWI_Handler +SWI_Handler: b SWI_Handler Prefetch_Handler: b Prefetch_Handler Abort_Handler: b Abort_Handler nop |