forked from rrcarlosr/Jetpack
148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
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/*
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* Copyright (C) 2011
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* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
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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 <config.h>
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#include <spl.h>
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#include <asm/io.h>
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#include <nand.h>
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#include <libfdt_env.h>
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#include <fdt.h>
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#if defined(CONFIG_SPL_NAND_RAW_ONLY)
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int spl_nand_load_image(void)
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{
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nand_init();
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nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
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CONFIG_SYS_NAND_U_BOOT_SIZE,
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(void *)CONFIG_SYS_NAND_U_BOOT_DST);
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spl_set_header_raw_uboot();
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nand_deselect();
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return 0;
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}
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#else
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static ulong spl_nand_fit_read(struct spl_load_info *load, ulong offs,
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ulong size, void *dst)
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{
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int ret;
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ret = nand_spl_load_image(offs, size, dst);
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if (!ret)
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return size;
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else
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return 0;
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}
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static int spl_nand_load_element(int offset, struct image_header *header)
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{
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int err;
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err = nand_spl_load_image(offset, sizeof(*header), (void *)header);
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if (err)
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return err;
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic(header) == FDT_MAGIC) {
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struct spl_load_info load;
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debug("Found FIT\n");
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load.dev = NULL;
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load.priv = NULL;
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load.filename = NULL;
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load.bl_len = 1;
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load.read = spl_nand_fit_read;
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return spl_load_simple_fit(&load, offset, header);
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} else {
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err = spl_parse_image_header(header);
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if (err)
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return err;
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return nand_spl_load_image(offset, spl_image.size,
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(void *)(ulong)spl_image.load_addr);
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}
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}
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int spl_nand_load_image(void)
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{
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int err;
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struct image_header *header;
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int *src __attribute__((unused));
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int *dst __attribute__((unused));
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#ifdef CONFIG_SPL_NAND_SOFTECC
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debug("spl: nand - using sw ecc\n");
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#else
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debug("spl: nand - using hw ecc\n");
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#endif
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nand_init();
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/*use CONFIG_SYS_TEXT_BASE as temporary storage area */
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header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
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#ifdef CONFIG_SPL_OS_BOOT
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if (!spl_start_uboot()) {
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/*
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* load parameter image
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* load to temp position since nand_spl_load_image reads
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* a whole block which is typically larger than
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* CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite
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* following sections like BSS
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*/
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nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS,
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CONFIG_CMD_SPL_WRITE_SIZE,
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(void *)CONFIG_SYS_TEXT_BASE);
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/* copy to destintion */
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for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
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src = (int *)CONFIG_SYS_TEXT_BASE;
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src < (int *)(CONFIG_SYS_TEXT_BASE +
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CONFIG_CMD_SPL_WRITE_SIZE);
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src++, dst++) {
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writel(readl(src), dst);
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}
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/* load linux */
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nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
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sizeof(*header), (void *)header);
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err = spl_parse_image_header(header);
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if (err)
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return err;
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if (header->ih_os == IH_OS_LINUX) {
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/* happy - was a linux */
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err = nand_spl_load_image(
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CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
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spl_image.size,
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(void *)spl_image.load_addr);
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nand_deselect();
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return err;
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} else {
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puts("The Expected Linux image was not "
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"found. Please check your NAND "
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"configuration.\n");
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puts("Trying to start u-boot now...\n");
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}
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}
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#endif
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#ifdef CONFIG_NAND_ENV_DST
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spl_nand_load_element(CONFIG_ENV_OFFSET, header);
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#ifdef CONFIG_ENV_OFFSET_REDUND
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spl_nand_load_element(CONFIG_ENV_OFFSET_REDUND, header);
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#endif
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#endif
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/* Load u-boot */
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err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS, header);
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#ifdef CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
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#if CONFIG_SYS_NAND_U_BOOT_OFFS != CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
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if (err)
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err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND,
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header);
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#endif
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#endif
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nand_deselect();
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return err;
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}
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#endif
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