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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Google, Inc
* Written by Amar <amarendra.xt@samsung.com>
*/
#include <common.h>
#include <mmc.h>
#include "mmc_private.h"
/*
* This function changes the size of boot partition and the size of rpmb
* partition present on EMMC devices.
*
* Input Parameters:
* struct *mmc: pointer for the mmc device strcuture
* bootsize: size of boot partition
* rpmbsize: size of rpmb partition
*
* Returns 0 on success.
*/
int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
unsigned long rpmbsize)
{
int err;
struct mmc_cmd cmd;
/* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
cmd.cmdidx = MMC_CMD_RES_MAN;
cmd.resp_type = MMC_RSP_R1b;
cmd.cmdarg = MMC_CMD62_ARG1;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err) {
debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
return err;
}
/* Boot partition changing mode */
cmd.cmdidx = MMC_CMD_RES_MAN;
cmd.resp_type = MMC_RSP_R1b;
cmd.cmdarg = MMC_CMD62_ARG2;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err) {
debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
return err;
}
/* boot partition size is multiple of 128KB */
bootsize = (bootsize * 1024) / 128;
/* Arg: boot partition size */
cmd.cmdidx = MMC_CMD_RES_MAN;
cmd.resp_type = MMC_RSP_R1b;
cmd.cmdarg = bootsize;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err) {
debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
return err;
}
/* RPMB partition size is multiple of 128KB */
rpmbsize = (rpmbsize * 1024) / 128;
/* Arg: RPMB partition size */
cmd.cmdidx = MMC_CMD_RES_MAN;
cmd.resp_type = MMC_RSP_R1b;
cmd.cmdarg = rpmbsize;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err) {
debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
return err;
}
return 0;
}
/*
* Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
* based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
* and BOOT_MODE.
*
* Returns 0 on success.
*/
int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
{
return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
}
/*
* Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
* based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
* PARTITION_ACCESS.
*
* Returns 0 on success.
*/
int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
{
int ret;
u8 part_conf;
part_conf = EXT_CSD_BOOT_ACK(ack) |
EXT_CSD_BOOT_PART_NUM(part_num) |
EXT_CSD_PARTITION_ACCESS(access);
ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
part_conf);
if (!ret)
mmc->part_config = part_conf;
return ret;
}
/*
* Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
* for enable. Note that this is a write-once field for non-zero values.
*
* Returns 0 on success.
*/
int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
{
return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,
enable);
}
|
