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4369c6a050
Factorize FWU multi-bank support code common to STM32MP1 and STM32MP2 platforms into a dedicated shared source file. No functional change intended. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2026 Amarula Solutions, Dario Binacchi <dario.binacchi@amarulasolutions.com>
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*/
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#include <fwu.h>
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#include <part_efi.h>
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#include <asm/io.h>
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/**
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* fwu_plat_get_bootidx() - Get the value of the boot index
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* @boot_idx: Boot index value
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*
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* Get the value of the bank(partition) from which the platform
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* has booted. This value is passed to U-Boot from the earlier
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* stage bootloader which loads and boots all the relevant
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* firmware images
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*
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*/
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void fwu_plat_get_bootidx(uint *boot_idx)
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{
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*boot_idx = (readl(TAMP_FWU_BOOT_INFO_REG) >>
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TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK;
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}
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int fwu_platform_hook(struct udevice *dev, struct fwu_data *data)
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{
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uint boot_idx;
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efi_guid_t boot_uuid, root_uuid;
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const efi_guid_t boot_type_guid = PARTITION_XBOOTLDR;
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const efi_guid_t root_type_guid =
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PARTITION_LINUX_FILE_SYSTEM_DATA_GUID;
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char uuidbuf[UUID_STR_LEN + 1];
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int retb, retr;
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fwu_plat_get_bootidx(&boot_idx);
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retb = fwu_mdata_get_image_guid(&boot_uuid, &boot_type_guid, boot_idx);
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retr = fwu_mdata_get_image_guid(&root_uuid, &root_type_guid, boot_idx);
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if (!retb && !retr) {
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uuid_bin_to_str(boot_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
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env_set("boot_partuuid", uuidbuf);
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uuid_bin_to_str(root_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
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env_set("root_partuuid", uuidbuf);
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} else if (!retb && retr) {
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log_warning("%s: found boot GUID but missing root GUID (%d)\n",
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__func__, retr);
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} else if (!retr && retb) {
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log_warning("%s: found root GUID but missing boot GUID (%d)\n",
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__func__, retb);
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}
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return 0;
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}
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