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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
34 #define POST_RAM_FAILURE        0xea
35
36 /* Output a post code using al - value must be 0 to 0xff */
37 #ifdef __ASSEMBLY__
38 #define post_code(value) \
39         movb    $value, %al; \
40         outb    %al, $POST_PORT
41 #else
42 #include <asm/io.h>
43
44 static inline void post_code(int code)
45 {
46         outb(code, POST_PORT);
47 }
48 #endif
49
50 #endif