2 * Copyright (c) 2014 Google, Inc
4 * SPDX-License-Identifier: GPL-2.0+
10 /* port to use for post codes */
11 #define POST_PORT 0x80
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
31 /* Output a post code using al - value must be 0 to 0xff */
33 #define post_code(value) \
39 static inline void post_code(int code)
41 outb(code, POST_PORT);