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6494e823b4
Implement spl_load_image_sqfs() in spl code. This will be used in MMC to read a file from a squashfs partition. Also, loosen squashfs read checks on file size by not failing when a bigger size than the actual file size is requested. (Just read the file) This is needed for FIT loading, because the length is ALIGNed. Signed-off-by: Richard Genoud <richard.genoud@bootlin.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: João Marcos Costa <joaomarcos.costa@bootlin.com>
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 Paratronic
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* Copyright (C) 2026 Bootlin
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*
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* Author: Richard Genoud <richard.genoud@bootlin.com>
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*
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*/
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#include <env.h>
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#include <part.h>
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#include <spl.h>
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#include <spl_load.h>
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#include <squashfs.h>
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#include <errno.h>
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#include <image.h>
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static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset,
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ulong size, void *buf)
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{
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struct legacy_img_hdr *header;
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char *filename = load->priv;
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loff_t actread;
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int ret;
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ret = sqfs_read(filename, buf, file_offset, size, &actread);
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if (ret)
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return ret;
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if (CONFIG_IS_ENABLED(OS_BOOT)) {
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header = (struct legacy_img_hdr *)buf;
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if (image_get_magic(header) != FDT_MAGIC)
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return size;
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}
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return actread;
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}
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int spl_load_image_sqfs(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev,
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struct blk_desc *block_dev, int partition,
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const char *filename)
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{
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int err;
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loff_t size = 0;
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struct spl_load_info load;
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struct disk_partition part_info = {};
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err = part_get_info(block_dev, partition, &part_info);
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if (err) {
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printf("spl: no partition table found\n");
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goto end;
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}
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err = sqfs_probe(block_dev, &part_info);
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if (err) {
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printf("spl: sqfs probe err part_name:%s type=%s err=%d\n",
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part_info.name, part_info.type, err);
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goto end;
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}
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL)) {
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err = sqfs_size(filename, &size);
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if (err)
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goto end;
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}
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spl_load_init(&load, spl_fit_read, (void *)filename, 1);
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err = spl_load(spl_image, bootdev, &load, size, 0);
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end:
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if (err < 0)
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printf("%s: error reading image %s, err - %d\n",
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__func__, filename, err);
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return err;
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}
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