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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014 Panasonic Corporation
* Copyright (C) 2015-2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <common.h>
#include <env.h>
#include <init.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/raw/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 void uniphier_set_env_fdt_file(void)
{
DECLARE_GLOBAL_DATA_PTR;
const char *compat;
char dtb_name[256];
int buf_len = sizeof(dtb_name);
int ret;
if (env_get("fdtfile"))
return; /* do nothing if it is already set */
compat = fdt_stringlist_get(gd->fdt_blob, 0, "compatible", 0, NULL);
if (!compat)
goto fail;
/* rip off the vendor prefix "socionext," */
compat = strchr(compat, ',');
if (!compat)
goto fail;
compat++;
strncpy(dtb_name, compat, buf_len);
buf_len -= strlen(compat);
strncat(dtb_name, ".dtb", buf_len);
ret = env_set("fdtfile", dtb_name);
if (ret)
goto fail;
return;
fail:
pr_warn("\"fdt_file\" environment variable was not set correctly\n");
}
static void uniphier_set_env_addr(const char *env, const char *offset_env)
{
unsigned long offset = 0;
const char *str;
char *end;
int ret;
if (env_get(env))
return; /* do nothing if it is already set */
if (offset_env) {
str = env_get(offset_env);
if (!str)
goto fail;
offset = simple_strtoul(str, &end, 16);
if (*end)
goto fail;
}
ret = env_set_hex(env, gd->ram_base + offset);
if (ret)
goto fail;
return;
fail:
pr_warn("\"%s\" environment variable was not set correctly\n", env);
}
int board_late_init(void)
{
puts("MODE: ");
switch (uniphier_boot_device_raw()) {
case BOOT_DEVICE_MMC1:
printf("eMMC Boot");
env_set("bootdev", "emmc");
break;
case BOOT_DEVICE_MMC2:
printf("SD Boot");
env_set("bootdev", "sd");
break;
case BOOT_DEVICE_NAND:
printf("NAND Boot");
env_set("bootdev", "nand");
nand_denali_wp_disable();
break;
case BOOT_DEVICE_NOR:
printf("NOR Boot");
env_set("bootdev", "nor");
break;
case BOOT_DEVICE_USB:
printf("USB Boot");
env_set("bootdev", "usb");
break;
default:
printf("Unknown");
break;
}
if (uniphier_have_internal_stm())
printf(" (STM: %s)",
uniphier_boot_from_backend() ? "OFF" : "ON");
printf("\n");
uniphier_set_env_fdt_file();
uniphier_set_env_addr("dram_base", NULL);
uniphier_set_env_addr("loadaddr", "loadaddr_offset");
uniphier_set_env_addr("kernel_addr_r", "kernel_addr_r_offset");
uniphier_set_env_addr("ramdisk_addr_r", "ramdisk_addr_r_offset");
uniphier_set_env_addr("fdt_addr_r", "fdt_addr_r_offset");
return 0;
}
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