diff options
Diffstat (limited to 'arch/x86/cpu/start.S')
| -rw-r--r-- | arch/x86/cpu/start.S | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 306fb49..f87633b 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -30,6 +30,7 @@ #include <version.h> #include <asm/global_data.h> #include <asm/processor-flags.h> +#include <generated/asm-offsets.h> .section .text .code32 @@ -47,14 +48,12 @@ _x86boot_start: cli cld - /* Turn of cache (this might require a 486-class CPU) */ + /* Turn off cache (this might require a 486-class CPU) */ movl %cr0, %eax orl $(X86_CR0_NW | X86_CR0_CD), %eax movl %eax, %cr0 wbinvd - /* Tell 32-bit code it is being entered from an in-RAM copy */ - movw $GD_FLG_WARM_BOOT, %bx _start: /* This is the 32-bit cold-reset entry point */ @@ -114,7 +113,7 @@ relocate_code: /* Setup call address of in-RAM copy of board_init_r() */ movl $board_init_r, %ebp - addl (GD_RELOC_OFF * 4)(%edx), %ebp + addl (GENERATED_GD_RELOC_OFF)(%edx), %ebp /* Setup parameters to board_init_r() */ movl %edx, %eax @@ -123,10 +122,31 @@ relocate_code: /* Jump to in-RAM copy of board_init_r() */ call *%ebp -die: hlt +die: + hlt jmp die hlt blank_idt_ptr: .word 0 /* limit */ .long 0 /* base */ + + .p2align 2 /* force 4-byte alignment */ + +multiboot_header: + /* magic */ + .long 0x1BADB002 + /* flags */ + .long (1 << 16) + /* checksum */ + .long -0x1BADB002 - (1 << 16) + /* header addr */ + .long multiboot_header - _x86boot_start + CONFIG_SYS_TEXT_BASE + /* load addr */ + .long CONFIG_SYS_TEXT_BASE + /* load end addr */ + .long 0 + /* bss end addr */ + .long 0 + /* entry addr */ + .long CONFIG_SYS_TEXT_BASE |