mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
// 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 <amarendra.xt@samsung.com>
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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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