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