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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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