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
|
/*
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#ifndef __CHROMEOS_CROSSYSTEM_DATA_H__
#define __CHROMEOS_CROSSYSTEM_DATA_H__
#include <chromeos/cros_gpio.h>
#include <vboot_nvstorage.h>
#include <vboot_struct.h>
#define ID_LEN 256
#define RECOVERY_FIRMWARE 0
#define REWRITABLE_FIRMWARE_A 1
#define REWRITABLE_FIRMWARE_B 2
#define RECOVERY_TYPE 0
#define NORMAL_TYPE 1
#define DEVELOPER_TYPE 2
/* the data blob format */
typedef struct {
uint32_t total_size;
char signature[10];
uint16_t version;
uint64_t nvcxt_lba;
uint16_t vbnv[2];
uint8_t nvcxt_cache[VBNV_BLOCK_SIZE];
uint8_t write_protect_sw;
uint8_t recovery_sw;
uint8_t developer_sw;
int gpio_port_write_protect_sw;
int gpio_port_recovery_sw;
int gpio_port_developer_sw;
uint8_t polarity_write_protect_sw;
uint8_t polarity_recovery_sw;
uint8_t polarity_developer_sw;
uint8_t binf[5];
uint32_t chsw;
char hwid[ID_LEN];
char fwid[ID_LEN];
char frid[ID_LEN];
uint32_t fmap_base;
uint8_t vbshared_data[VB_SHARED_DATA_REC_SIZE];
} crossystem_data_t;
/**
* This initializes the data blob that we will pass to kernel, and later be
* used by crossystem. Note that:
* - It does not initialize information of the main firmware, e.g., fwid. This
* information must be initialized in subsequent calls to the setters below.
* - The recovery reason is default to VBNV_RECOVERY_NOT_REQUESTED.
*
* @param cdata is the data blob shared with crossystem
* @param frid r/o firmware id; a zero-terminated string shorter than ID_LEN
* @param fmap_data is the address of fmap in firmware
* @param gbb_data points to gbb blob
* @param nvcxt_raw points to the VbNvContext raw data
* @param wpsw stores the value of write protect gpio
* @param recsw stores the value of recovery mode gpio
* @param devsw stores the value of developer mode gpio
* @return 0 if it succeeds; non-zero if it fails
*/
int crossystem_data_init(crossystem_data_t *cdata, char *frid,
uint32_t fmap_data, void *gbb_data, void *nvcxt_raw,
cros_gpio_t *wpsw, cros_gpio_t *recsw, cros_gpio_t *devsw);
/**
* This sets rewritable firmware id. It should only be called in non-recovery
* boots.
*
* @param cdata is the data blob shared with crossystem
* @param fwid r/w firmware id; a zero-terminated string shorter than ID_LEN
* @return 0 if it succeeds; non-zero if it fails
*/
int crossystem_data_set_fwid(crossystem_data_t *cdata, char *fwid);
/**
* This sets active main firmware and its type.
*
* @param cdata is the data blob shared with crossystem
* @param which - recovery: 0; rewritable A: 1; rewritable B: 2
* @param type - recovery: 0; normal: 1; developer: 2
* @return 0 if it succeeds; non-zero if it fails
*/
int crossystem_data_set_active_main_firmware(crossystem_data_t *cdata,
int which, int type);
int crossystem_data_get_active_main_firmware(crossystem_data_t *cdata);
int crossystem_data_get_active_main_firmware_type(crossystem_data_t *cdata);
/**
* This sets recovery reason.
*
* @param cdata is the data blob shared with crossystem
* @param reason - the recovery reason
* @return 0 if it succeeds; non-zero if it fails
*/
int crossystem_data_set_recovery_reason(crossystem_data_t *cdata,
uint32_t reason);
/**
* This embeds kernel shared data into fdt.
*
* @param cdata is the data blob shared with crossystem
* @param fdt points to a device tree
* @param size_ptr stores the new size of fdt
* @return 0 if it succeeds, non-zero if it fails
*/
int crossystem_data_embed_into_fdt(crossystem_data_t *cdata, void *fdt,
uint32_t *size_ptr);
/**
* This prints out the data blob content to debug output.
*/
void crossystem_data_dump(crossystem_data_t *cdata);
#endif /* __CHROMEOS_CROSSYSTEM_DATA_H__ */
|
