mirror of
https://github.com/AsahiLinux/u-boot
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22802f4e3a
Add a new top-level config option so support booting an image stored in RAM. This allows to move the RAM boot support into a sparate file and having a single condition to compile that file. Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* (C) Copyright 2016
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* Xilinx, Inc.
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*
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* (C) Copyright 2016
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* Toradex AG
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*
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* Michal Simek <michal.simek@xilinx.com>
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* Stefan Agner <stefan.agner@toradex.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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#ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
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# define CONFIG_SPL_LOAD_FIT_ADDRESS 0
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#endif
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static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
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ulong count, void *buf)
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{
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debug("%s: sector %lx, count %lx, buf %lx\n",
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__func__, sector, count, (ulong)buf);
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memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
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return count;
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}
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static int spl_ram_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev)
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{
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struct image_header *header;
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header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
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#if defined(CONFIG_SPL_DFU_SUPPORT)
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if (bootdev->boot_device == BOOT_DEVICE_DFU)
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spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
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#endif
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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.bl_len = 1;
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load.read = spl_ram_load_read;
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spl_load_simple_fit(spl_image, &load, 0, header);
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} else {
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debug("Legacy image\n");
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/*
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* Get the header. It will point to an address defined by
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* handoff which will tell where the image located inside
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* the flash. For now, it will temporary fixed to address
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* pointed by U-Boot.
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*/
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header = (struct image_header *)
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(CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
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spl_parse_image_header(spl_image, header);
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}
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return 0;
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}
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#if defined(CONFIG_SPL_RAM_DEVICE)
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SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
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#endif
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#if defined(CONFIG_SPL_DFU_SUPPORT)
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SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
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#endif
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