• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (c) 2014 Google, Inc
4  */
5 
6 #ifndef _post_h
7 #define _post_h
8 
9 /* port to use for post codes */
10 #define POST_PORT		0x80
11 
12 /* post codes which represent various stages of init */
13 #define POST_START		0x1e
14 #define POST_CAR_START		0x1f
15 #define POST_CAR_SIPI		0x20
16 #define POST_CAR_MTRR		0x21
17 #define POST_CAR_UNCACHEABLE	0x22
18 #define POST_CAR_BASE_ADDRESS	0x23
19 #define POST_CAR_MASK		0x24
20 #define POST_CAR_FILL		0x25
21 #define POST_CAR_ROM_CACHE	0x26
22 #define POST_CAR_MRC_CACHE	0x27
23 #define POST_CAR_CPU_CACHE	0x28
24 #define POST_START_STACK	0x29
25 #define POST_START_DONE		0x2a
26 #define POST_CPU_INIT		0x2b
27 #define POST_EARLY_INIT		0x2c
28 #define POST_CPU_INFO		0x2d
29 #define POST_PRE_MRC		0x2e
30 #define POST_MRC		0x2f
31 #define POST_DRAM		0x30
32 #define POST_LAPIC		0x31
33 #define POST_OS_RESUME		0x40
34 
35 #define POST_RAM_FAILURE	0xea
36 #define POST_BIST_FAILURE	0xeb
37 #define POST_CAR_FAILURE	0xec
38 #define POST_RESUME_FAILURE	0xed
39 
40 /* Output a post code using al - value must be 0 to 0xff */
41 #ifdef __ASSEMBLY__
42 #define post_code(value) \
43 	movb	$value, %al; \
44 	outb	%al, $POST_PORT
45 #else
46 #include <asm/io.h>
47 
post_code(int code)48 static inline void post_code(int code)
49 {
50 	outb(code, POST_PORT);
51 }
52 #endif
53 
54 #endif
55