1 /* 2 * Copyright (c) 2014 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef _post_h 8 #define _post_h 9 10 /* port to use for post codes */ 11 #define POST_PORT 0x80 12 13 /* post codes which represent various stages of init */ 14 #define POST_START 0x1e 15 #define POST_CAR_START 0x1f 16 #define POST_CAR_SIPI 0x20 17 #define POST_CAR_MTRR 0x21 18 #define POST_CAR_UNCACHEABLE 0x22 19 #define POST_CAR_BASE_ADDRESS 0x23 20 #define POST_CAR_MASK 0x24 21 #define POST_CAR_FILL 0x25 22 #define POST_CAR_ROM_CACHE 0x26 23 #define POST_CAR_MRC_CACHE 0x27 24 #define POST_CAR_CPU_CACHE 0x28 25 #define POST_START_STACK 0x29 26 #define POST_START_DONE 0x2a 27 #define POST_CPU_INIT 0x2b 28 #define POST_EARLY_INIT 0x2c 29 #define POST_CPU_INFO 0x2d 30 #define POST_PRE_MRC 0x2e 31 #define POST_MRC 0x2f 32 #define POST_DRAM 0x2f 33 #define POST_LAPIC 0x30 34 35 #define POST_RAM_FAILURE 0xea 36 37 /* Output a post code using al - value must be 0 to 0xff */ 38 #ifdef __ASSEMBLY__ 39 #define post_code(value) \ 40 movb $value, %al; \ 41 outb %al, $POST_PORT 42 #else 43 #include <asm/io.h> 44 45 static inline void post_code(int code) 46 { 47 outb(code, POST_PORT); 48 } 49 #endif 50 51 #endif 52