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c40704f4 SG |
1 | /* |
2 | * Copyright (C) 2016 Google, Inc | |
3 | * Written by Amar <amarendra.xt@samsung.com> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <mmc.h> | |
10 | #include "mmc_private.h" | |
11 | ||
12 | /* | |
13 | * This function changes the size of boot partition and the size of rpmb | |
14 | * partition present on EMMC devices. | |
15 | * | |
16 | * Input Parameters: | |
17 | * struct *mmc: pointer for the mmc device strcuture | |
18 | * bootsize: size of boot partition | |
19 | * rpmbsize: size of rpmb partition | |
20 | * | |
21 | * Returns 0 on success. | |
22 | */ | |
23 | ||
24 | int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, | |
25 | unsigned long rpmbsize) | |
26 | { | |
27 | int err; | |
28 | struct mmc_cmd cmd; | |
29 | ||
30 | /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ | |
31 | cmd.cmdidx = MMC_CMD_RES_MAN; | |
32 | cmd.resp_type = MMC_RSP_R1b; | |
33 | cmd.cmdarg = MMC_CMD62_ARG1; | |
34 | ||
35 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
36 | if (err) { | |
37 | debug("mmc_boot_partition_size_change: Error1 = %d\n", err); | |
38 | return err; | |
39 | } | |
40 | ||
41 | /* Boot partition changing mode */ | |
42 | cmd.cmdidx = MMC_CMD_RES_MAN; | |
43 | cmd.resp_type = MMC_RSP_R1b; | |
44 | cmd.cmdarg = MMC_CMD62_ARG2; | |
45 | ||
46 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
47 | if (err) { | |
48 | debug("mmc_boot_partition_size_change: Error2 = %d\n", err); | |
49 | return err; | |
50 | } | |
51 | /* boot partition size is multiple of 128KB */ | |
52 | bootsize = (bootsize * 1024) / 128; | |
53 | ||
54 | /* Arg: boot partition size */ | |
55 | cmd.cmdidx = MMC_CMD_RES_MAN; | |
56 | cmd.resp_type = MMC_RSP_R1b; | |
57 | cmd.cmdarg = bootsize; | |
58 | ||
59 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
60 | if (err) { | |
61 | debug("mmc_boot_partition_size_change: Error3 = %d\n", err); | |
62 | return err; | |
63 | } | |
64 | /* RPMB partition size is multiple of 128KB */ | |
65 | rpmbsize = (rpmbsize * 1024) / 128; | |
66 | /* Arg: RPMB partition size */ | |
67 | cmd.cmdidx = MMC_CMD_RES_MAN; | |
68 | cmd.resp_type = MMC_RSP_R1b; | |
69 | cmd.cmdarg = rpmbsize; | |
70 | ||
71 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
72 | if (err) { | |
73 | debug("mmc_boot_partition_size_change: Error4 = %d\n", err); | |
74 | return err; | |
75 | } | |
76 | return 0; | |
77 | } | |
78 | ||
79 | /* | |
80 | * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH | |
81 | * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH | |
82 | * and BOOT_MODE. | |
83 | * | |
84 | * Returns 0 on success. | |
85 | */ | |
86 | int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode) | |
87 | { | |
24f5aec3 MY |
88 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH, |
89 | EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) | | |
90 | EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) | | |
91 | EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width)); | |
c40704f4 SG |
92 | } |
93 | ||
94 | /* | |
95 | * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG) | |
96 | * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and | |
97 | * PARTITION_ACCESS. | |
98 | * | |
99 | * Returns 0 on success. | |
100 | */ | |
101 | int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access) | |
102 | { | |
bdb60996 AD |
103 | int ret; |
104 | u8 part_conf; | |
105 | ||
106 | part_conf = EXT_CSD_BOOT_ACK(ack) | | |
107 | EXT_CSD_BOOT_PART_NUM(part_num) | | |
108 | EXT_CSD_PARTITION_ACCESS(access); | |
109 | ||
110 | ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, | |
111 | part_conf); | |
112 | if (!ret) | |
113 | mmc->part_config = part_conf; | |
114 | ||
115 | return ret; | |
c40704f4 SG |
116 | } |
117 | ||
118 | /* | |
119 | * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value | |
120 | * for enable. Note that this is a write-once field for non-zero values. | |
121 | * | |
122 | * Returns 0 on success. | |
123 | */ | |
124 | int mmc_set_rst_n_function(struct mmc *mmc, u8 enable) | |
125 | { | |
126 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION, | |
127 | enable); | |
128 | } |