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/*
* Copyright (C) 2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <linux/io.h>
#include <asm/processor.h>
#include "../soc-info.h"
struct uniphier_romfunc_table {
void *mmc_send_cmd;
void *mmc_card_blockaddr;
void *mmc_switch_part;
void *mmc_load_image;
};
static const struct uniphier_romfunc_table uniphier_ld11_romfunc_table = {
.mmc_send_cmd = (void *)0x20d8,
.mmc_card_blockaddr = (void *)0x1b68,
.mmc_switch_part = (void *)0x1c38,
.mmc_load_image = (void *)0x2e48,
};
static const struct uniphier_romfunc_table uniphier_ld20_romfunc_table = {
.mmc_send_cmd = (void *)0x2130,
.mmc_card_blockaddr = (void *)0x1ba0,
.mmc_switch_part = (void *)0x1c70,
.mmc_load_image = (void *)0x2ef0,
};
int uniphier_rom_get_mmc_funcptr(int (**send_cmd)(u32, u32),
int (**card_blockaddr)(u32),
int (**switch_part)(int),
int (**load_image)(u32, uintptr_t, u32))
{
const struct uniphier_romfunc_table *table;
switch (uniphier_get_soc_type()) {
case SOC_UNIPHIER_LD11:
table = &uniphier_ld11_romfunc_table;
break;
case SOC_UNIPHIER_LD20:
table = &uniphier_ld20_romfunc_table;
break;
default:
printf("unsupported SoC\n");
return -EINVAL;
}
*send_cmd = table->mmc_send_cmd;
*card_blockaddr = table->mmc_card_blockaddr;
*switch_part = table->mmc_switch_part;
*load_image = table->mmc_load_image;
return 0;
}
static int spl_board_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
int (*send_cmd)(u32 cmd, u32 arg);
int (*card_blockaddr)(u32 rca);
int (*switch_part)(int part);
int (*load_image)(u32 dev_addr, uintptr_t load_addr, u32 block_cnt);
u32 dev_addr = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR;
const u32 rca = 0x1000; /* RCA assigned by Boot ROM */
int ret;
ret = uniphier_rom_get_mmc_funcptr(&send_cmd, &card_blockaddr,
&switch_part, &load_image);
if (ret)
return ret;
/*
* deselect card before SEND_CSD command.
* Do not check the return code. It fails, but it is OK.
*/
(*send_cmd)(0x071a0000, 0); /* CMD7 (arg=0) */
/* reset CMD Line */
writeb(0x6, 0x5a00022f);
while (readb(0x5a00022f))
cpu_relax();
ret = (*card_blockaddr)(rca);
if (ret) {
debug("card is block addressing\n");
} else {
debug("card is byte addressing\n");
dev_addr *= 512;
}
ret = (*send_cmd)(0x071a0000, rca << 16); /* CMD7: select card again */
if (ret)
printf("failed to select card\n");
ret = (*switch_part)(1); /* Switch to Boot Partition 1 */
if (ret)
printf("failed to switch partition\n");
ret = (*load_image)(dev_addr, CONFIG_SYS_TEXT_BASE, 1);
if (ret) {
printf("failed to load image\n");
return ret;
}
ret = spl_parse_image_header(spl_image, (void *)CONFIG_SYS_TEXT_BASE);
if (ret)
return ret;
ret = (*load_image)(dev_addr, spl_image->load_addr,
spl_image->size / 512);
if (ret) {
printf("failed to load image\n");
return ret;
}
return 0;
}
SPL_LOAD_IMAGE_METHOD("eMMC", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
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