1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <vbe.h>
#include <asm/coreboot_tables.h>
#include <asm/e820.h>
/**
* cb_table_init() - initialize a coreboot table header
*
* This fills in the coreboot table header signature and the header bytes.
* Other fields are set to zero.
*
* @cbh: coreboot table header address
*/
static void cb_table_init(struct cb_header *cbh)
{
memset(cbh, 0, sizeof(struct cb_header));
memcpy(cbh->signature, "LBIO", 4);
cbh->header_bytes = sizeof(struct cb_header);
}
/**
* cb_table_add_entry() - add a coreboot table entry
*
* This increases the coreboot table entry size with added table entry length
* and increases entry count by 1.
*
* @cbh: coreboot table header address
* @cbr: to be added table entry address
* @return: pointer to next table entry address
*/
static u32 cb_table_add_entry(struct cb_header *cbh, struct cb_record *cbr)
{
cbh->table_bytes += cbr->size;
cbh->table_entries++;
return (u32)cbr + cbr->size;
}
/**
* cb_table_finalize() - finalize the coreboot table
*
* This calculates the checksum for all coreboot table entries as well as
* the checksum for the coreboot header itself.
*
* @cbh: coreboot table header address
*/
static void cb_table_finalize(struct cb_header *cbh)
{
struct cb_record *cbr = (struct cb_record *)(cbh + 1);
cbh->table_checksum = compute_ip_checksum(cbr, cbh->table_bytes);
cbh->header_checksum = compute_ip_checksum(cbh, cbh->header_bytes);
}
void write_coreboot_table(u32 addr, struct memory_area *cfg_tables)
{
struct cb_header *cbh = (struct cb_header *)addr;
struct cb_record *cbr;
struct cb_memory *mem;
struct cb_memory_range *map;
struct e820entry e820[32];
struct cb_framebuffer *fb;
struct vesa_mode_info *vesa;
int i, num;
cb_table_init(cbh);
cbr = (struct cb_record *)(cbh + 1);
/*
* Two type of coreboot table entries are generated by us.
* They are 'struct cb_memory' and 'struct cb_framebuffer'.
*/
/* populate memory map table */
mem = (struct cb_memory *)cbr;
mem->tag = CB_TAG_MEMORY;
map = mem->map;
/* first install e820 defined memory maps */
num = install_e820_map(ARRAY_SIZE(e820), e820);
for (i = 0; i < num; i++) {
map->start.lo = e820[i].addr & 0xffffffff;
map->start.hi = e820[i].addr >> 32;
map->size.lo = e820[i].size & 0xffffffff;
map->size.hi = e820[i].size >> 32;
map->type = e820[i].type;
map++;
}
/* then install all configuration tables */
while (cfg_tables->size) {
map->start.lo = cfg_tables->start & 0xffffffff;
map->start.hi = cfg_tables->start >> 32;
map->size.lo = cfg_tables->size & 0xffffffff;
map->size.hi = cfg_tables->size >> 32;
map->type = CB_MEM_TABLE;
map++;
num++;
cfg_tables++;
}
mem->size = num * sizeof(struct cb_memory_range) +
sizeof(struct cb_record);
cbr = (struct cb_record *)cb_table_add_entry(cbh, cbr);
/* populate framebuffer table if we have sane vesa info */
vesa = &mode_info.vesa;
if (vesa->x_resolution && vesa->y_resolution) {
fb = (struct cb_framebuffer *)cbr;
fb->tag = CB_TAG_FRAMEBUFFER;
fb->size = sizeof(struct cb_framebuffer);
fb->x_resolution = vesa->x_resolution;
fb->y_resolution = vesa->y_resolution;
fb->bits_per_pixel = vesa->bits_per_pixel;
fb->bytes_per_line = vesa->bytes_per_scanline;
fb->physical_address = vesa->phys_base_ptr;
fb->red_mask_size = vesa->red_mask_size;
fb->red_mask_pos = vesa->red_mask_pos;
fb->green_mask_size = vesa->green_mask_size;
fb->green_mask_pos = vesa->green_mask_pos;
fb->blue_mask_size = vesa->blue_mask_size;
fb->blue_mask_pos = vesa->blue_mask_pos;
fb->reserved_mask_size = vesa->reserved_mask_size;
fb->reserved_mask_pos = vesa->reserved_mask_pos;
cbr = (struct cb_record *)cb_table_add_entry(cbh, cbr);
}
cb_table_finalize(cbh);
}
|
