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/*
* Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <libfdt.h>
#include <nand.h>
#include <linux/io.h>
#include <../drivers/mtd/nand/denali.h>
#include "boot-mode/boot-device.h"
static void nand_denali_wp_disable(void)
{
#ifdef CONFIG_NAND_DENALI
/*
* Since the boot rom enables the write protection for NAND boot mode,
* it must be disabled somewhere for "nand write", "nand erase", etc.
* The workaround is here to not disturb the Denali NAND controller
* driver just for a really SoC-specific thing.
*/
void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
#endif
}
#define VENDOR_PREFIX "socionext,"
#define DTB_FILE_PREFIX "uniphier-"
static int uniphier_set_fdt_file(void)
{
DECLARE_GLOBAL_DATA_PTR;
const char *compat;
char dtb_name[256];
int buf_len = 256;
int ret;
if (getenv("fdt_file"))
return 0; /* do nothing if it is already set */
ret = fdt_get_string(gd->fdt_blob, 0, "compatible", &compat);
if (ret)
return -EINVAL;
if (strncmp(compat, VENDOR_PREFIX, strlen(VENDOR_PREFIX)))
return -EINVAL;
compat += strlen(VENDOR_PREFIX);
strncat(dtb_name, DTB_FILE_PREFIX, buf_len);
buf_len -= strlen(DTB_FILE_PREFIX);
strncat(dtb_name, compat, buf_len);
buf_len -= strlen(compat);
strncat(dtb_name, ".dtb", buf_len);
return setenv("fdt_file", dtb_name);
}
int board_late_init(void)
{
puts("MODE: ");
switch (spl_boot_device_raw()) {
case BOOT_DEVICE_MMC1:
printf("eMMC Boot\n");
setenv("bootmode", "emmcboot");
break;
case BOOT_DEVICE_NAND:
printf("NAND Boot\n");
setenv("bootmode", "nandboot");
nand_denali_wp_disable();
break;
case BOOT_DEVICE_NOR:
printf("NOR Boot\n");
setenv("bootmode", "norboot");
break;
case BOOT_DEVICE_USB:
printf("USB Boot\n");
setenv("bootmode", "usbboot");
break;
default:
printf("Unknown\n");
break;
}
if (uniphier_set_fdt_file())
printf("fdt_file environment was not set correctly\n");
return 0;
}
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