diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/arm720t/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/arm720t/start.S | 46 | ||||
| -rw-r--r-- | cpu/arm920t/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/arm920t/start.S | 42 | ||||
| -rw-r--r-- | cpu/arm925t/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/arm925t/start.S | 42 | ||||
| -rw-r--r-- | cpu/arm926ejs/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/arm926ejs/start.S | 45 | ||||
| -rw-r--r-- | cpu/at91rm9200/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/at91rm9200/start.S | 43 | ||||
| -rw-r--r-- | cpu/ixp/cpu.c | 22 | ||||
| -rw-r--r-- | cpu/ixp/start.S | 60 | ||||
| -rw-r--r-- | cpu/pxa/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/pxa/start.S | 34 | ||||
| -rw-r--r-- | cpu/sa1100/cpu.c | 2 | ||||
| -rw-r--r-- | cpu/sa1100/start.S | 42 |
16 files changed, 199 insertions, 191 deletions
diff --git a/cpu/arm720t/cpu.c b/cpu/arm720t/cpu.c index b6fcef9..5637eb6 100644 --- a/cpu/arm720t/cpu.c +++ b/cpu/arm720t/cpu.c @@ -87,7 +87,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/arm720t/start.S b/cpu/arm720t/start.S index 8ddb0c9..7fe36c6 100644 --- a/cpu/arm720t/start.S +++ b/cpu/arm720t/start.S @@ -63,7 +63,7 @@ _fiq: .word fiq * * Startup Code (reset vector) * - * do important init only if we don't start from memory! + * do important init only if we don't start from RAM! * relocate armboot to ram * setup stack * jump to second stage @@ -79,16 +79,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -131,7 +130,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -151,6 +150,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + ldr pc, _start_armboot _start_armboot: .word start_armboot @@ -225,7 +235,7 @@ cpu_init_crit: /* * before relocating, we have to setup RAM timing - * because memory timing is board-dependend, you will + * because memory timing is board-dependent, you will * find a memsetup.S in your board directory. */ mov ip, lr @@ -281,9 +291,9 @@ cpu_init_crit: stmia sp, {r0 - r12} @ Calling r0-r12 add r8, sp, #S_PC - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r4} @ get pc, cpsr, old_r0 add r0, sp, #S_FRAME_SIZE @ restore sp_SVC @@ -314,9 +324,9 @@ cpu_init_crit: .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr diff --git a/cpu/arm920t/cpu.c b/cpu/arm920t/cpu.c index e638c1f..2a2b578 100644 --- a/cpu/arm920t/cpu.c +++ b/cpu/arm920t/cpu.c @@ -92,7 +92,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/arm920t/start.S b/cpu/arm920t/start.S index d640942..49264da 100644 --- a/cpu/arm920t/start.S +++ b/cpu/arm920t/start.S @@ -80,16 +80,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -170,7 +169,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -190,6 +189,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + #if 0 /* try doing this stuff after the relocation */ ldr r0, =pWTCON @@ -303,9 +313,9 @@ cpu_init_crit: .macro bad_save_user_regs sub sp, sp, #S_FRAME_SIZE stmia sp, {r0 - r12} @ Calling r0-r12 - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r3} @ get pc, cpsr add r0, sp, #S_FRAME_SIZE @ restore sp_SVC @@ -336,9 +346,9 @@ cpu_init_crit: .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr diff --git a/cpu/arm925t/cpu.c b/cpu/arm925t/cpu.c index 6bac53d..b760ec9 100644 --- a/cpu/arm925t/cpu.c +++ b/cpu/arm925t/cpu.c @@ -93,7 +93,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/arm925t/start.S b/cpu/arm925t/start.S index 0a3042d..da84de1 100644 --- a/cpu/arm925t/start.S +++ b/cpu/arm925t/start.S @@ -89,16 +89,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -176,7 +175,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -196,6 +195,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + ldr pc, _start_armboot _start_armboot: .word start_armboot @@ -283,9 +293,9 @@ cpu_init_crit: sub sp, sp, #S_FRAME_SIZE @ carve out a frame on current user stack stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12 - ldr r2, _armboot_end @ find top of stack - add r2, r2, #CONFIG_STACKSIZE @ find base of normal stack - sub r2, r2, #8 @ set base 2 words into abort stack + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r3} @ get values for "aborted" pc and cpsr (into parm regs) add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack @@ -316,9 +326,9 @@ cpu_init_crit: .endm .macro get_bad_stack - ldr r13, _armboot_end @ get bottom of stack (into sp by by user stack pointer). - add r13, r13, #CONFIG_STACKSIZE @ head to reserved words at the top of the stack - sub r13, r13, #8 @ reserved a couple spots in abort stack + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr in position 0 of saved stack mrs lr, spsr @ get the spsr diff --git a/cpu/arm926ejs/cpu.c b/cpu/arm926ejs/cpu.c index 748a21a..6c153e5 100644 --- a/cpu/arm926ejs/cpu.c +++ b/cpu/arm926ejs/cpu.c @@ -93,7 +93,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/arm926ejs/start.S b/cpu/arm926ejs/start.S index 39d7409..0c28927 100644 --- a/cpu/arm926ejs/start.S +++ b/cpu/arm926ejs/start.S @@ -97,16 +97,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -170,7 +169,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -190,6 +189,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + ldr pc, _start_armboot _start_armboot: @@ -278,9 +288,10 @@ cpu_init_crit: @ carve out a frame on current user stack sub sp, sp, #S_FRAME_SIZE stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12 - ldr r2, _armboot_end @ find top of stack - add r2, r2, #CONFIG_STACKSIZE @ find base of normal stack - sub r2, r2, #8 @ set base 2 words into abort stack + + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack @ get values for "aborted" pc and cpsr (into parm regs) ldmia r2, {r2 - r3} add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack @@ -312,11 +323,9 @@ cpu_init_crit: .endm .macro get_bad_stack - @ get bottom of stack (into sp by by user stack pointer). - ldr r13, _armboot_end - @ head to reserved words at the top of the stack - add r13, r13, #CONFIG_STACKSIZE - sub r13, r13, #8 @ reserved a couple spots in abort stack + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr in position 0 of saved stack mrs lr, spsr @ get the spsr diff --git a/cpu/at91rm9200/cpu.c b/cpu/at91rm9200/cpu.c index b0cfcef..0250729 100644 --- a/cpu/at91rm9200/cpu.c +++ b/cpu/at91rm9200/cpu.c @@ -87,7 +87,7 @@ int cpu_init(void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/at91rm9200/start.S b/cpu/at91rm9200/start.S index a93d045..b9b889a 100644 --- a/cpu/at91rm9200/start.S +++ b/cpu/at91rm9200/start.S @@ -79,19 +79,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -/* - * Note: armboot_end is defined by the (board-dependent) linker script - */ -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -149,6 +145,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + ldr pc,_start_armboot _start_armboot: .word start_armboot @@ -212,9 +219,9 @@ cpu_init_crit: stmia sp, {r0 - r12} @ Calling r0-r12 add r8, sp, #S_PC - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r4} @ get pc, cpsr, old_r0 add r0, sp, #S_FRAME_SIZE @ restore sp_SVC @@ -245,9 +252,9 @@ cpu_init_crit: .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr diff --git a/cpu/ixp/cpu.c b/cpu/ixp/cpu.c index d12e8bd..d4fd823 100644 --- a/cpu/ixp/cpu.c +++ b/cpu/ixp/cpu.c @@ -37,22 +37,16 @@ int cpu_init (void) { /* - * setup up stack if necessary + * setup up stacks if necessary */ -/* - - FIXME: the stack is _below_ the uboot code!! - #ifdef CONFIG_USE_IRQ - IRQ_STACK_START = _armboot_end + - CONFIG_STACKSIZE + CONFIG_STACKSIZE_IRQ - 4; - FIQ_STACK_START = IRQ_STACK_START + CONFIG_STACKSIZE_FIQ; - _armboot_real_end = FIQ_STACK_START + 4; -#else - _armboot_real_end = _armboot_end + CONFIG_STACKSIZE; + DECLARE_GLOBAL_DATA_PTR; + + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; + FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif -*/ - pci_init(); + + pci_init(); return 0; } @@ -84,7 +78,7 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { extern void reset_cpu (ulong addr); - printf ("reseting ...\n"); + printf ("resetting ...\n"); udelay (50000); /* wait 50 ms */ disable_interrupts (); diff --git a/cpu/ixp/start.S b/cpu/ixp/start.S index d5fc9bf..09ecc73 100644 --- a/cpu/ixp/start.S +++ b/cpu/ixp/start.S @@ -101,42 +101,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot - */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end - -/* - * This is defined in the board specific linker script + * These are defined in the board-specific linker script. */ .globl _bss_start _bss_start: - .word bss_start + .word __bss_start .globl _bss_end _bss_end: - .word bss_end - -/* - * _armboot_real_end is the first usable RAM address behind armboot - * and the various stacks - */ -.globl _armboot_real_end -_armboot_real_end: - .word 0x0badc0de - -/* - * We relocate uboot to this address (end of RAM - 128 KiB) - */ -.globl _uboot_reloc -_uboot_reloc: - .word TEXT_BASE + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -294,7 +267,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -305,16 +278,16 @@ copy_loop: ble copy_loop /* Set up the stack */ - stack_setup: - - ldr r0, _uboot_reloc /* upper 128 KiB: relocated uboot */ - sub r0, r0, #CFG_MALLOC_LEN /* malloc area */ - /* FIXME: bdinfo should be here */ + ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */ + sub r0, r0, #CFG_MALLOC_LEN /* malloc area */ + sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo */ +#ifdef CONFIG_USE_IRQ + sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ) +#endif sub sp, r0, #12 /* leave 3 words for abort-stack */ clear_bss: - ldr r0, _bss_start /* find start of bss segment */ add r0, r0, #4 /* start at first byte of bss */ ldr r1, _bss_end /* stop here */ @@ -325,7 +298,6 @@ clbss_l:str r2, [r0] /* clear loop... */ cmp r0, r1 bne clbss_l - ldr pc, _start_armboot _start_armboot: .word start_armboot @@ -370,9 +342,9 @@ _start_armboot: .word start_armboot stmia sp, {r0 - r12} /* Calling r0-r12 */ add r8, sp, #S_PC - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r4} /* get pc, cpsr, old_r0 */ add r0, sp, #S_FRAME_SIZE /* restore sp_SVC */ @@ -407,9 +379,9 @@ _start_armboot: .word start_armboot .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr diff --git a/cpu/pxa/cpu.c b/cpu/pxa/cpu.c index 32ec4f6..abb064a 100644 --- a/cpu/pxa/cpu.c +++ b/cpu/pxa/cpu.c @@ -42,7 +42,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/pxa/start.S b/cpu/pxa/start.S index d41b414..de2a084 100644 --- a/cpu/pxa/start.S +++ b/cpu/pxa/start.S @@ -69,27 +69,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot - */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end - -/* - * This is defined in the board specific linker script + * These are defined in the board-specific linker script. */ .globl _bss_start _bss_start: - .word bss_start + .word __bss_start .globl _bss_end _bss_end: - .word bss_end + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -131,7 +119,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -152,7 +140,6 @@ stack_setup: sub sp, r0, #12 /* leave 3 words for abort-stack */ clear_bss: - ldr r0, _bss_start /* find start of bss segment */ add r0, r0, #4 /* start at first byte of bss */ ldr r1, _bss_end /* stop here */ @@ -163,7 +150,6 @@ clbss_l:str r2, [r0] /* clear loop... */ cmp r0, r1 bne clbss_l - ldr pc, _start_armboot _start_armboot: .word start_armboot @@ -303,9 +289,9 @@ setspeed_done: stmia sp, {r0 - r12} /* Calling r0-r12 */ add r8, sp, #S_PC - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r4} /* get pc, cpsr, old_r0 */ add r0, sp, #S_FRAME_SIZE /* restore sp_SVC */ @@ -340,9 +326,9 @@ setspeed_done: .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr diff --git a/cpu/sa1100/cpu.c b/cpu/sa1100/cpu.c index b613fe7..34adf91 100644 --- a/cpu/sa1100/cpu.c +++ b/cpu/sa1100/cpu.c @@ -41,7 +41,7 @@ int cpu_init (void) #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; - IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4; + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; #endif return 0; diff --git a/cpu/sa1100/start.S b/cpu/sa1100/start.S index 0c8946e..fe1316c 100644 --- a/cpu/sa1100/start.S +++ b/cpu/sa1100/start.S @@ -81,16 +81,15 @@ _armboot_start: .word _start /* - * Note: _armboot_end_data and _armboot_end are defined - * by the (board-dependent) linker script. - * _armboot_end_data is the first usable FLASH address after armboot + * These are defined in the board-specific linker script. */ -.globl _armboot_end_data -_armboot_end_data: - .word armboot_end_data -.globl _armboot_end -_armboot_end: - .word armboot_end +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ @@ -133,7 +132,7 @@ relocate: /* relocate U-Boot to RAM */ beq stack_setup ldr r2, _armboot_start - ldr r3, _armboot_end + ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ @@ -153,6 +152,17 @@ stack_setup: #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ +clear_bss: + ldr r0, _bss_start /* find start of bss segment */ + add r0, r0, #4 /* start at first byte of bss */ + ldr r1, _bss_end /* stop here */ + mov r2, #0x00000000 /* clear */ + +clbss_l:str r2, [r0] /* clear loop... */ + add r0, r0, #4 + cmp r0, r1 + bne clbss_l + ldr pc, _start_armboot _start_armboot: .word start_armboot @@ -276,9 +286,9 @@ cpu_init_crit: stmia sp, {r0 - r12} @ Calling r0-r12 add r8, sp, #S_PC - ldr r2, _armboot_end - add r2, r2, #CONFIG_STACKSIZE - sub r2, r2, #8 + ldr r2, _armboot_start + sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack ldmia r2, {r2 - r4} @ get pc, cpsr, old_r0 add r0, sp, #S_FRAME_SIZE @ restore sp_SVC @@ -309,9 +319,9 @@ cpu_init_crit: .endm .macro get_bad_stack - ldr r13, _armboot_end @ setup our mode stack - add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack - sub r13, r13, #8 + ldr r13, _armboot_start @ setup our mode stack + sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN) + sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack str lr, [r13] @ save caller lr / spsr mrs lr, spsr |