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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc
*
* 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; version 2 of the License.
*
* This program is distributed in the hope that 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stddef.h>
#include <stdint.h>
#include <boot/coreboot_tables.h>
#include <bootstate.h>
#include <console/console.h>
#include <cbmem.h>
#include <device/device.h>
#include "chromeos.h"
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
static void set_ramoops(chromeos_acpi_t *chromeos, void *ram_oops, size_t size)
{
if (chromeos == NULL) {
printk(BIOS_DEBUG, "chromeos gnvs is NULL. ramoops not set.\n");
return;
}
printk(BIOS_DEBUG, "Ramoops buffer: 0x%zx@0x%p.\n", size, ram_oops);
chromeos->ramoops_base = (uintptr_t)ram_oops;
chromeos->ramoops_len = size;
}
static void reserve_ram_oops_dynamic(chromeos_acpi_t *chromeos)
{
const size_t size = CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE;
void *ram_oops;
if (!IS_ENABLED(CONFIG_CHROMEOS_RAMOOPS_DYNAMIC))
return;
ram_oops = cbmem_add(CBMEM_ID_RAM_OOPS, size);
set_ramoops(chromeos, ram_oops, size);
}
#if CONFIG_CHROMEOS_RAMOOPS_DYNAMIC
static inline void set_global_chromeos_pointer(chromeos_acpi_t *chromeos) {}
#else /* !CONFIG_CHROMEOS_RAMOOPS_DYNAMIC */
static const unsigned long ramoops_base = CONFIG_CHROMEOS_RAMOOPS_RAM_START;
static const unsigned long ramoops_size = CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE;
/*
* Save pointer to chromeos structure in memory. This is needed because the
* memory reservation is not done when chromeos_init() is called. However,
* the pointer to the chromeos_acpi_t structure is needed to update the
* fields with the rserved base and size.
*/
static chromeos_acpi_t *g_chromeos;
static void set_global_chromeos_pointer(chromeos_acpi_t *chromeos)
{
g_chromeos = chromeos;
}
static void update_gnvs(void *arg)
{
chromeos_acpi_t **chromeos = arg;
set_ramoops(*chromeos, (void *)ramoops_base, ramoops_size);
}
static BOOT_STATE_CALLBACK(bscb_ramoops, update_gnvs, &g_chromeos);
void chromeos_reserve_ram_oops(struct device *dev, int idx)
{
const unsigned long base = ramoops_base >> 10;
const unsigned long size = ramoops_size >> 10;
reserved_ram_resource(dev, idx, base, size);
boot_state_sched_on_exit(&bscb_ramoops, BS_WRITE_TABLES);
}
#endif /* CONFIG_CHROMEOS_RAMOOPS_DYNAMIC */
void chromeos_ram_oops_init(chromeos_acpi_t *chromeos)
{
set_global_chromeos_pointer(chromeos);
reserve_ram_oops_dynamic(chromeos);
}
#elif IS_ENABLED(CONFIG_CHROMEOS_RAMOOPS_NON_ACPI)
static void ramoops_alloc(void *arg)
{
const size_t size = CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE;
if (size == 0)
return;
if (cbmem_add(CBMEM_ID_RAM_OOPS, size) == NULL)
printk(BIOS_ERR, "Could not allocate RAMOOPS buffer\n");
}
BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY, ramoops_alloc, NULL);
#endif
void lb_ramoops(struct lb_header *header)
{
void *buffer = cbmem_find(CBMEM_ID_RAM_OOPS);
if (buffer == NULL)
return;
struct lb_range *ramoops;
ramoops = (struct lb_range *)lb_new_record(header);
ramoops->tag = LB_TAG_RAM_OOPS;
ramoops->size = sizeof(*ramoops);
ramoops->range_start = (uintptr_t)buffer;
ramoops->range_size = CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE;
}
|
