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
137
138
139
140
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 - 2016 Intel Corp.
* (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <cbfs.h>
#include <console/console.h>
#include <fsp/util.h>
enum pixel_format {
pixel_rgbx_8bpc = 0,
pixel_bgrx_8bpc = 1,
pixel_bitmask = 2, /* defined by <rgb>_mask values */
};
static const uint8_t fsp_graphics_info_guid[16] = {
0xce, 0x2c, 0xf6, 0x39, 0x25, 0x68, 0x69, 0x46,
0xbb, 0x56, 0x54, 0x1a, 0xba, 0x75, 0x3a, 0x07
};
struct hob_graphics_info {
uint64_t framebuffer_base;
uint32_t framebuffer_size;
uint32_t version;
uint32_t horizontal_resolution;
uint32_t vertical_resolution;
uint32_t pixel_format; /* See enum pixel_format */
uint32_t red_mask;
uint32_t green_mask;
uint32_t blue_mask;
uint32_t reserved_mask;
uint32_t pixels_per_scanline;
} __attribute__((packed));
struct pixel {
uint8_t pos;
uint8_t size;
};
static const struct fsp_framebuffer {
struct pixel red;
struct pixel green;
struct pixel blue;
struct pixel rsvd;
} fsp_framebuffer_format_map[] = {
[pixel_rgbx_8bpc] = { {0, 8}, {8, 8}, {16, 8}, {24, 8} },
[pixel_bgrx_8bpc] = { {16, 8}, {8, 8}, {0, 8}, {24, 8} },
};
enum cb_err fsp_fill_lb_framebuffer(struct lb_framebuffer *framebuffer)
{
size_t size;
const struct hob_graphics_info *ginfo;
const struct fsp_framebuffer *fbinfo;
ginfo = fsp_find_extension_hob_by_guid(fsp_graphics_info_guid, &size);
if (!ginfo) {
printk(BIOS_ALERT, "Graphics hand-off block not found\n");
return CB_ERR;
}
if (ginfo->pixel_format >= ARRAY_SIZE(fsp_framebuffer_format_map)) {
printk(BIOS_ALERT, "FSP set unknown framebuffer format: %d\n",
ginfo->pixel_format);
return CB_ERR;
}
fbinfo = fsp_framebuffer_format_map + ginfo->pixel_format;
framebuffer->physical_address = ginfo->framebuffer_base;
framebuffer->x_resolution = ginfo->horizontal_resolution;
framebuffer->y_resolution = ginfo->vertical_resolution;
framebuffer->bytes_per_line = ginfo->pixels_per_scanline * 4;
framebuffer->bits_per_pixel = 32;
framebuffer->red_mask_pos = fbinfo->red.pos;
framebuffer->red_mask_size = fbinfo->red.size;
framebuffer->green_mask_pos = fbinfo->green.pos;
framebuffer->green_mask_size = fbinfo->green.size;
framebuffer->blue_mask_pos = fbinfo->blue.pos;
framebuffer->blue_mask_size = fbinfo->blue.size;
framebuffer->reserved_mask_pos = fbinfo->rsvd.pos;
framebuffer->reserved_mask_size = fbinfo->rsvd.pos;
framebuffer->tag = LB_TAG_FRAMEBUFFER;
framebuffer->size = sizeof(*framebuffer);
return CB_SUCCESS;
}
uintptr_t fsp_load_vbt(void)
{
void *vbt;
vbt = cbfs_boot_map_with_leak("vbt.bin", CBFS_TYPE_RAW, NULL);
if (!vbt)
printk(BIOS_NOTICE, "Could not locate a VBT file in CBFS\n");
return (uintptr_t)vbt;
}
void lb_framebuffer(struct lb_header *header)
{
enum cb_err ret;
struct lb_framebuffer *framebuffer;
uintptr_t framebuffer_bar;
/* Pci enumeration happens after silicon init.
* After enumeration graphic framebuffer base may be relocated.
* Get framebuffer base from soc.
*/
framebuffer_bar = fsp_soc_get_igd_bar();
if (!framebuffer_bar) {
printk(BIOS_ALERT, "Framebuffer BAR invalid\n");
return;
}
framebuffer = (void *)lb_new_record(header);
ret = fsp_fill_lb_framebuffer(framebuffer);
if (ret != CB_SUCCESS) {
printk(BIOS_ALERT, "FSP did not return a valid framebuffer\n");
return;
}
/* Resource allocator can move the BAR around after FSP configures it */
framebuffer->physical_address = framebuffer_bar;
printk(BIOS_DEBUG, "Graphics framebuffer located at 0x%llx\n",
framebuffer->physical_address);
}
__attribute__((weak)) uintptr_t fsp_soc_get_igd_bar(void)
{
return 0;
}
|
