mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 13:43:28 +00:00
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Google, Inc
|
|
* Written by Amar <amarendra.xt@samsung.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <log.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);
|
|
}
|