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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* HVM SeaBIOS support.
*
* Leendert van Doorn, leendert@watson.ibm.com
* Copyright (c) 2005, International Business Machines Corporation.
* Copyright (c) 2006, Keir Fraser, XenSource Inc.
* Copyright (c) 2011, Citrix Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
#include "config.h"
#include "config-seabios.h"
#include "util.h"
#include "smbios_types.h"
#include "acpi/acpi2_0.h"
#define ROM_INCLUDE_SEABIOS
#include "roms.inc"
extern unsigned char dsdt_anycpu_qemu_xen[];
extern int dsdt_anycpu_qemu_xen_len;
struct seabios_info {
char signature[14]; /* XenHVMSeaBIOS\0 */
uint8_t length; /* Length of this struct */
uint8_t checksum; /* Set such that the sum over bytes 0..length == 0 */
/*
* Physical address of an array of tables_nr elements.
*
* Each element is a 32 bit value contianing the physical address
* of a BIOS table.
*/
uint32_t tables;
uint32_t tables_nr;
/*
* Physical address of the e820 table, contains e820_nr entries.
*/
uint32_t e820;
uint32_t e820_nr;
} __attribute__ ((packed));
#define MAX_TABLES 4
static void seabios_setup_bios_info(void)
{
struct seabios_info *info = (void *)BIOS_INFO_PHYSICAL_ADDRESS;
memset(info, 0, sizeof(*info));
memcpy(info->signature, "XenHVMSeaBIOS", sizeof(info->signature));
info->length = sizeof(*info);
info->tables = (uint32_t)scratch_alloc(MAX_TABLES*sizeof(uint32_t), 0);
}
static void seabios_finish_bios_info(void)
{
struct seabios_info *info = (void *)BIOS_INFO_PHYSICAL_ADDRESS;
uint32_t i;
uint8_t checksum;
checksum = 0;
for ( i = 0; i < info->length; i++ )
checksum += ((uint8_t *)(info))[i];
info->checksum = -checksum;
}
static void add_table(uint32_t t)
{
struct seabios_info *info = (void *)BIOS_INFO_PHYSICAL_ADDRESS;
uint32_t *ts = (uint32_t *)info->tables;
ASSERT(info->tables_nr < MAX_TABLES);
ts[info->tables_nr] = t;
info->tables_nr++;
}
static void seabios_acpi_build_tables(void)
{
uint32_t rsdp = (uint32_t)scratch_alloc(sizeof(struct acpi_20_rsdp), 0);
struct acpi_config config = {
.dsdt_anycpu = dsdt_anycpu_qemu_xen,
.dsdt_anycpu_len = dsdt_anycpu_qemu_xen_len,
.dsdt_15cpu = NULL,
.dsdt_15cpu_len = 0,
};
acpi_build_tables(&config, rsdp);
add_table(rsdp);
}
static void seabios_create_mp_tables(void)
{
add_table(create_mp_tables(NULL));
}
static void seabios_create_smbios_tables(void)
{
uint32_t ep = (uint32_t)scratch_alloc(sizeof(struct smbios_entry_point), 0);
hvm_write_smbios_tables(ep, 0UL, 0UL);
add_table(ep);
}
static void seabios_create_pir_tables(void)
{
add_table(create_pir_tables());
}
static void seabios_setup_e820(void)
{
struct seabios_info *info = (void *)BIOS_INFO_PHYSICAL_ADDRESS;
struct e820entry *e820 = scratch_alloc(sizeof(struct e820entry)*16, 0);
info->e820 = (uint32_t)e820;
/* SeaBIOS reserves memory in e820 as necessary so no low reservation. */
info->e820_nr = build_e820_table(e820, 0, 0x100000-sizeof(seabios));
dump_e820_table(e820, info->e820_nr);
}
//BUILD_BUG_ON(sizeof(seabios) > (0x00100000U - SEABIOS_PHYSICAL_ADDRESS));
struct bios_config seabios_config = {
.name = "SeaBIOS",
.image = seabios,
.image_size = sizeof(seabios),
.bios_address = SEABIOS_PHYSICAL_ADDRESS,
.load_roms = NULL,
.bios_load = NULL,
.bios_info_setup = seabios_setup_bios_info,
.bios_info_finish = seabios_finish_bios_info,
.e820_setup = seabios_setup_e820,
.acpi_build_tables = seabios_acpi_build_tables,
.create_mp_tables = seabios_create_mp_tables,
.create_smbios_tables = seabios_create_smbios_tables,
.create_pir_tables = seabios_create_pir_tables,
};
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
|
