Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Simon Glass | 84f9df9 | 2016-06-12 23:30:18 -0600 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2016 Google, Inc |
| 4 | * Written by Amar <amarendra.xt@samsung.com> |
Simon Glass | 84f9df9 | 2016-06-12 23:30:18 -0600 | [diff] [blame] | 5 | */ |
| 6 | |
Simon Glass | 0f2af88 | 2020-05-10 11:40:05 -0600 | [diff] [blame] | 7 | #include <log.h> |
Simon Glass | 84f9df9 | 2016-06-12 23:30:18 -0600 | [diff] [blame] | 8 | #include <mmc.h> |
| 9 | #include "mmc_private.h" |
| 10 | |
| 11 | /* |
| 12 | * This function changes the size of boot partition and the size of rpmb |
| 13 | * partition present on EMMC devices. |
| 14 | * |
| 15 | * Input Parameters: |
| 16 | * struct *mmc: pointer for the mmc device strcuture |
| 17 | * bootsize: size of boot partition |
| 18 | * rpmbsize: size of rpmb partition |
| 19 | * |
| 20 | * Returns 0 on success. |
| 21 | */ |
| 22 | |
| 23 | int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, |
| 24 | unsigned long rpmbsize) |
| 25 | { |
| 26 | int err; |
| 27 | struct mmc_cmd cmd; |
| 28 | |
| 29 | /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ |
| 30 | cmd.cmdidx = MMC_CMD_RES_MAN; |
| 31 | cmd.resp_type = MMC_RSP_R1b; |
| 32 | cmd.cmdarg = MMC_CMD62_ARG1; |
| 33 | |
| 34 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 35 | if (err) { |
| 36 | debug("mmc_boot_partition_size_change: Error1 = %d\n", err); |
| 37 | return err; |
| 38 | } |
| 39 | |
| 40 | /* Boot partition changing mode */ |
| 41 | cmd.cmdidx = MMC_CMD_RES_MAN; |
| 42 | cmd.resp_type = MMC_RSP_R1b; |
| 43 | cmd.cmdarg = MMC_CMD62_ARG2; |
| 44 | |
| 45 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 46 | if (err) { |
| 47 | debug("mmc_boot_partition_size_change: Error2 = %d\n", err); |
| 48 | return err; |
| 49 | } |
| 50 | /* boot partition size is multiple of 128KB */ |
| 51 | bootsize = (bootsize * 1024) / 128; |
| 52 | |
| 53 | /* Arg: boot partition size */ |
| 54 | cmd.cmdidx = MMC_CMD_RES_MAN; |
| 55 | cmd.resp_type = MMC_RSP_R1b; |
| 56 | cmd.cmdarg = bootsize; |
| 57 | |
| 58 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 59 | if (err) { |
| 60 | debug("mmc_boot_partition_size_change: Error3 = %d\n", err); |
| 61 | return err; |
| 62 | } |
| 63 | /* RPMB partition size is multiple of 128KB */ |
| 64 | rpmbsize = (rpmbsize * 1024) / 128; |
| 65 | /* Arg: RPMB partition size */ |
| 66 | cmd.cmdidx = MMC_CMD_RES_MAN; |
| 67 | cmd.resp_type = MMC_RSP_R1b; |
| 68 | cmd.cmdarg = rpmbsize; |
| 69 | |
| 70 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 71 | if (err) { |
| 72 | debug("mmc_boot_partition_size_change: Error4 = %d\n", err); |
| 73 | return err; |
| 74 | } |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH |
| 80 | * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH |
| 81 | * and BOOT_MODE. |
| 82 | * |
| 83 | * Returns 0 on success. |
| 84 | */ |
| 85 | int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode) |
| 86 | { |
Masahiro Yamada | cdb67f3 | 2016-09-06 22:17:32 +0900 | [diff] [blame] | 87 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH, |
| 88 | EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) | |
| 89 | EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) | |
| 90 | EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width)); |
Simon Glass | 84f9df9 | 2016-06-12 23:30:18 -0600 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | /* |
| 94 | * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG) |
| 95 | * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and |
| 96 | * PARTITION_ACCESS. |
| 97 | * |
| 98 | * Returns 0 on success. |
| 99 | */ |
| 100 | int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access) |
| 101 | { |
Angelo Dureghello | f54f753 | 2017-08-01 14:27:10 +0200 | [diff] [blame] | 102 | int ret; |
| 103 | u8 part_conf; |
| 104 | |
| 105 | part_conf = EXT_CSD_BOOT_ACK(ack) | |
| 106 | EXT_CSD_BOOT_PART_NUM(part_num) | |
| 107 | EXT_CSD_PARTITION_ACCESS(access); |
| 108 | |
| 109 | ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, |
| 110 | part_conf); |
| 111 | if (!ret) |
| 112 | mmc->part_config = part_conf; |
| 113 | |
| 114 | return ret; |
Simon Glass | 84f9df9 | 2016-06-12 23:30:18 -0600 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value |
| 119 | * for enable. Note that this is a write-once field for non-zero values. |
| 120 | * |
| 121 | * Returns 0 on success. |
| 122 | */ |
| 123 | int mmc_set_rst_n_function(struct mmc *mmc, u8 enable) |
| 124 | { |
| 125 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION, |
| 126 | enable); |
| 127 | } |