diff options
Diffstat (limited to 'arch/x86/include/asm/post.h')
| -rw-r--r-- | arch/x86/include/asm/post.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/include/asm/post.h b/arch/x86/include/asm/post.h new file mode 100644 index 0000000000..6d2ae5dfe7 --- /dev/null +++ b/arch/x86/include/asm/post.h @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2014 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _post_h +#define _post_h + +/* port to use for post codes */ +#define POST_PORT 0x80 + +/* post codes which represent various stages of init */ +#define POST_START 0x1e +#define POST_CAR_START 0x1f +#define POST_CAR_SIPI 0x20 +#define POST_CAR_MTRR 0x21 +#define POST_CAR_UNCACHEABLE 0x22 +#define POST_CAR_BASE_ADDRESS 0x23 +#define POST_CAR_MASK 0x24 +#define POST_CAR_FILL 0x25 +#define POST_CAR_ROM_CACHE 0x26 +#define POST_CAR_MRC_CACHE 0x27 +#define POST_CAR_CPU_CACHE 0x28 +#define POST_START_STACK 0x29 +#define POST_START_DONE 0x2a +#define POST_CPU_INIT 0x2b +#define POST_EARLY_INIT 0x2c +#define POST_CPU_INFO 0x2d +#define POST_PRE_MRC 0x2e +#define POST_MRC 0x2f +#define POST_DRAM 0x2f +#define POST_LAPIC 0x30 + +#define POST_RAM_FAILURE 0xea + +/* Output a post code using al - value must be 0 to 0xff */ +#ifdef __ASSEMBLY__ +#define post_code(value) \ + movb $value, %al; \ + outb %al, $POST_PORT +#else +#include <asm/io.h> + +static inline void post_code(int code) +{ + outb(code, POST_PORT); +} +#endif + +#endif |