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https://source.denx.de/u-boot/u-boot.git
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4565a74d56
This code auto-detects the best-match FDT file name, but it should respect the user's choice if "fdt_file" environment is found in a saved set of environments. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
97 lines
2.1 KiB
C
97 lines
2.1 KiB
C
/*
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* Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spl.h>
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#include <libfdt.h>
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#include <nand.h>
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#include <linux/io.h>
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#include <../drivers/mtd/nand/denali.h>
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#include "boot-mode/boot-device.h"
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static void nand_denali_wp_disable(void)
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{
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#ifdef CONFIG_NAND_DENALI
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/*
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* Since the boot rom enables the write protection for NAND boot mode,
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* it must be disabled somewhere for "nand write", "nand erase", etc.
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* The workaround is here to not disturb the Denali NAND controller
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* driver just for a really SoC-specific thing.
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*/
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void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
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writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
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#endif
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}
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#define VENDOR_PREFIX "socionext,"
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#define DTB_FILE_PREFIX "uniphier-"
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static int uniphier_set_fdt_file(void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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const char *compat;
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char dtb_name[256];
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int buf_len = 256;
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int ret;
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if (getenv("fdt_file"))
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return 0; /* do nothing if it is already set */
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ret = fdt_get_string(gd->fdt_blob, 0, "compatible", &compat);
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if (ret)
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return -EINVAL;
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if (strncmp(compat, VENDOR_PREFIX, strlen(VENDOR_PREFIX)))
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return -EINVAL;
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compat += strlen(VENDOR_PREFIX);
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strncat(dtb_name, DTB_FILE_PREFIX, buf_len);
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buf_len -= strlen(DTB_FILE_PREFIX);
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strncat(dtb_name, compat, buf_len);
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buf_len -= strlen(compat);
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strncat(dtb_name, ".dtb", buf_len);
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return setenv("fdt_file", dtb_name);
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}
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int board_late_init(void)
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{
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puts("MODE: ");
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switch (spl_boot_device_raw()) {
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case BOOT_DEVICE_MMC1:
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printf("eMMC Boot\n");
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setenv("bootmode", "emmcboot");
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break;
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case BOOT_DEVICE_NAND:
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printf("NAND Boot\n");
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setenv("bootmode", "nandboot");
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nand_denali_wp_disable();
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break;
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case BOOT_DEVICE_NOR:
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printf("NOR Boot\n");
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setenv("bootmode", "norboot");
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break;
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case BOOT_DEVICE_USB:
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printf("USB Boot\n");
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setenv("bootmode", "usbboot");
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break;
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default:
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printf("Unknown\n");
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break;
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}
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if (uniphier_set_fdt_file())
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printf("fdt_file environment was not set correctly\n");
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return 0;
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}
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