mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
6ea31cce0b
The motivation is to use the UBI atomic volume rename functionality to allow double copy software updates on UBI. To that end the SPL is configured to always load the same volume name (e.g. "u-boot"), whereas a software updater always installs into the secondary volume "u-boot_r". After successful installation, these two volume names are switched. This extension is protected by #ifdefs as it will somewhat slow down loading of volumes by id. This is because the code needs to disable the optimization of ignoring all volume ids which are not to-be-loaded, since these can only be resolved after attaching. This adds two vtbl related functions from Linux, which are taken from the same kernel version as the current main U-Boot UBI code (Linux 4.2 64291f7db5bd8). Signed-off-by: Hamish Guthrie <hamish.guthrie@kistler.com> Signed-off-by: Markus Klotzbuecher <markus.klotzbuecher@kistler.com> Reviewed-by: Heiko Schocher <hs@denx.de> Cc: Kyungmin Park <kmpark@infradead.org>
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2016
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* Ladislav Michl <ladis@linux-mips.org>
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*/
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#include <common.h>
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#include <config.h>
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#include <nand.h>
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#include <onenand_uboot.h>
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#include <ubispl.h>
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#include <spl.h>
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int spl_ubi_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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struct ubispl_info info;
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struct ubispl_load volumes[2];
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int ret = 1;
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switch (bootdev->boot_device) {
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#ifdef CONFIG_SPL_NAND_SUPPORT
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case BOOT_DEVICE_NAND:
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nand_init();
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info.read = nand_spl_read_block;
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info.peb_size = CONFIG_SYS_NAND_BLOCK_SIZE;
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break;
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#endif
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#ifdef CONFIG_SPL_ONENAND_SUPPORT
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case BOOT_DEVICE_ONENAND:
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info.read = onenand_spl_read_block;
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info.peb_size = CONFIG_SYS_ONENAND_BLOCK_SIZE;
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break;
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#endif
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default:
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goto out;
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}
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info.ubi = (struct ubi_scan_info *)CONFIG_SPL_UBI_INFO_ADDR;
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info.fastmap = IS_ENABLED(CONFIG_MTD_UBI_FASTMAP);
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info.peb_offset = CONFIG_SPL_UBI_PEB_OFFSET;
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info.vid_offset = CONFIG_SPL_UBI_VID_OFFSET;
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info.leb_start = CONFIG_SPL_UBI_LEB_START;
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info.peb_count = CONFIG_SPL_UBI_MAX_PEBS - info.peb_offset;
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#ifdef CONFIG_SPL_OS_BOOT
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if (!spl_start_uboot()) {
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volumes[0].vol_id = CONFIG_SPL_UBI_LOAD_KERNEL_ID;
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volumes[0].load_addr = (void *)CONFIG_SYS_LOAD_ADDR;
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volumes[1].vol_id = CONFIG_SPL_UBI_LOAD_ARGS_ID;
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volumes[1].load_addr = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
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ret = ubispl_load_volumes(&info, volumes, 2);
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if (!ret) {
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header = (struct image_header *)volumes[0].load_addr;
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spl_parse_image_header(spl_image, header);
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puts("Linux loaded.\n");
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goto out;
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}
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puts("Loading Linux failed, falling back to U-Boot.\n");
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}
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#endif
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header = spl_get_load_buffer(-sizeof(*header), sizeof(header));
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#ifdef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
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volumes[0].vol_id = -1;
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strncpy(volumes[0].name,
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CONFIG_SPL_UBI_LOAD_MONITOR_VOLNAME,
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UBI_VOL_NAME_MAX + 1);
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#else
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volumes[0].vol_id = CONFIG_SPL_UBI_LOAD_MONITOR_ID;
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#endif
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volumes[0].load_addr = (void *)header;
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ret = ubispl_load_volumes(&info, volumes, 1);
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if (!ret)
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spl_parse_image_header(spl_image, header);
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out:
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#ifdef CONFIG_SPL_NAND_SUPPORT
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if (bootdev->boot_device == BOOT_DEVICE_NAND)
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nand_deselect();
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#endif
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return ret;
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}
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/* Use priorty 0 so that Ubi will override NAND and ONENAND methods */
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SPL_LOAD_IMAGE_METHOD("NAND", 0, BOOT_DEVICE_NAND, spl_ubi_load_image);
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SPL_LOAD_IMAGE_METHOD("OneNAND", 0, BOOT_DEVICE_ONENAND, spl_ubi_load_image);
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