diff options
Diffstat (limited to 'arch/i386/cpu/start.S')
| -rw-r--r-- | arch/i386/cpu/start.S | 44 |
1 files changed, 29 insertions, 15 deletions
diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index 95be5a2..77f0332 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -96,21 +96,6 @@ car_init_ret: /* size memory */ call dram_init_f - /* Setup stack in SDRAM */ - movl (GD_RAM_SIZE * 4)(%ebp), %esp - - /* Test the stack */ - pushl $0 - popl %ecx - cmpl $0, %ecx - jne die - push $0x55aa55aa - popl %ecx - cmpl $0x55aa55aa, %ecx - jne die - - wbinvd - /* Set parameter to board_init_f() to boot flags */ movl (GD_FLAGS * 4)(%ebp), %eax @@ -118,6 +103,35 @@ car_init_ret: /* indicate (lack of) progress */ movw $0x85, %ax + jmp die + +.globl relocate_code +.type relocate_code, @function +relocate_code: + /* + * SDRAM has been initialised, U-Boot code has been copied into + * RAM, BSS has been cleared and relocation adjustments have been + * made. It is now time to jump into the in-RAM copy of U-Boot + * + * %eax = Address of top of stack + * %edx = Address of Global Data + * %ecx = Base address of in-RAM copy of U-Boot + */ + + /* Setup stack in RAM */ + movl %eax, %esp + + /* Setup call address of in-RAM copy of board_init_r() */ + movl $board_init_r, %ebp + subl (GD_RELOC_OFF * 4)(%edx), %ebp + + /* Setup parameters to board_init_r() */ + movl %edx, %eax + movl %ecx, %edx + + /* Jump to in-RAM copy of board_init_r() */ + call *%ebp + die: hlt jmp die hlt |