diff options
Diffstat (limited to 'arch/i386/cpu/start.S')
| -rw-r--r-- | arch/i386/cpu/start.S | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index 0ce9713..df9ca0d 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -72,41 +72,40 @@ _start: .globl early_board_init_ret early_board_init_ret: + /* Initialise Cache-As-RAM */ + jmp car_init +.globl car_init_ret +car_init_ret: + /* + * We now have CONFIG_SYS_CAR_SIZE bytes of Cache-As-RAM (or SRAM, + * or fully initialised SDRAM - we really don't care which) + * starting at CONFIG_SYS_CAR_ADDR to be used as a temporary stack + */ + movl $CONFIG_SYS_INIT_SP_ADDR, %esp + /* Skip memory initialization if not starting from cold-reset */ movl %ebx, %ecx andl $GD_FLG_COLD_BOOT, %ecx jz skip_mem_init /* size memory */ - jmp mem_init -.globl mem_init_ret -mem_init_ret: + call mem_init skip_mem_init: /* fetch memory size (into %eax) */ - jmp get_mem_size -.globl get_mem_size_ret -get_mem_size_ret: + call get_mem_size + movl %eax, %esp #if CONFIG_SYS_SDRAM_ECC_ENABLE /* Skip ECC initialization if not starting from cold-reset */ movl %ebx, %ecx andl $GD_FLG_COLD_BOOT, %ecx - jz init_ecc_ret - jmp init_ecc + jz skip_ecc_init + call init_ecc -.globl init_ecc_ret -init_ecc_ret: +skip_init_ecc: #endif - /* Check we have enough memory for stack */ - movl $CONFIG_SYS_STACK_SIZE, %ecx - cmpl %ecx, %eax - jb die -mem_ok: - /* Set stack pointer to upper memory limit*/ - movl %eax, %esp - /* Test the stack */ pushl $0 popl %ecx |