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/*
* Copyright (C) 2014 Panasonic Corporation
* Copyright (C) 2015-2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <linux/libfdt.h>
#include <nand.h>
#include <stdio.h>
#include <linux/io.h>
#include <linux/printk.h>
#include <../drivers/mtd/nand/denali.h>
#include "init.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
}
static int uniphier_set_fdt_file(void)
{
DECLARE_GLOBAL_DATA_PTR;
const char *compat;
char dtb_name[256];
int buf_len = sizeof(dtb_name);
if (env_get("fdt_file"))
return 0; /* do nothing if it is already set */
compat = fdt_stringlist_get(gd->fdt_blob, 0, "compatible", 0, NULL);
if (!compat)
return -EINVAL;
/* rip off the vendor prefix "socionext," */
compat = strchr(compat, ',');
if (!compat)
return -EINVAL;
compat++;
strncpy(dtb_name, compat, buf_len);
buf_len -= strlen(compat);
strncat(dtb_name, ".dtb", buf_len);
return env_set("fdt_file", dtb_name);
}
int board_late_init(void)
{
puts("MODE: ");
switch (uniphier_boot_device_raw()) {
case BOOT_DEVICE_MMC1:
printf("eMMC Boot");
env_set("bootmode", "emmcboot");
break;
case BOOT_DEVICE_NAND:
printf("NAND Boot");
env_set("bootmode", "nandboot");
nand_denali_wp_disable();
break;
case BOOT_DEVICE_NOR:
printf("NOR Boot");
env_set("bootmode", "norboot");
break;
case BOOT_DEVICE_USB:
printf("USB Boot");
env_set("bootmode", "usbboot");
break;
default:
printf("Unknown");
break;
}
if (uniphier_have_internal_stm())
printf(" (STM: %s)",
uniphier_boot_from_backend() ? "OFF" : "ON");
printf("\n");
if (uniphier_set_fdt_file())
pr_warn("fdt_file environment was not set correctly\n");
return 0;
}
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