diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/c_start.S | 7 | ||||
| -rw-r--r-- | src/arch/x86/include/arch/ram_segs.h | 25 |
2 files changed, 29 insertions, 3 deletions
diff --git a/src/arch/x86/c_start.S b/src/arch/x86/c_start.S index 32b848df9b..43d78020e1 100644 --- a/src/arch/x86/c_start.S +++ b/src/arch/x86/c_start.S @@ -12,6 +12,7 @@ */ #include <cpu/x86/post_code.h> +#include <arch/ram_segs.h> /* Place the stack in the bss section. It's not necessary to define it in the * the linker script. */ @@ -42,16 +43,16 @@ _start: cli lgdt %cs:gdtaddr #ifndef __x86_64__ - ljmp $0x10, $1f + ljmp $RAM_CODE_SEG, $1f #endif -1: movl $0x18, %eax +1: movl $RAM_DATA_SEG, %eax movl %eax, %ds movl %eax, %es movl %eax, %ss movl %eax, %fs movl %eax, %gs #ifdef __x86_64__ - mov $0x48, %ecx + mov $RAM_CODE_SEG64, %ecx call SetCodeSelector #endif diff --git a/src/arch/x86/include/arch/ram_segs.h b/src/arch/x86/include/arch/ram_segs.h new file mode 100644 index 0000000000..39d0c64896 --- /dev/null +++ b/src/arch/x86/include/arch/ram_segs.h @@ -0,0 +1,25 @@ +/* + * This file is part of the coreboot project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef RAM_SEGS_H +#define RAM_SEGS_H + +#define RAM_CODE_SEG 0x10 +#define RAM_DATA_SEG 0x18 +#define RAM_CODE16_SEG 0x28 +#define RAM_DATA16_SEG 0x30 +#define RAM_CODE_ACPI_SEG 0x38 +#define RAM_DATA_ACPI_SEG 0x40 +#define RAM_CODE_SEG64 0x48 + +#endif /* RAM_SEGS_H */ |