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cc02f15faa
The dfu framework uses the dfu_alt_info environment variable to get information that is needed for performing the firmware update. Add logic to set the dfu_alt_info for the qemu arm64 platform to reflect the two mtd partitions created for the u-boot env and the firmware image. This can be subsequently extended for other qemu architectures which need this variable set. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2020 Linaro Limited
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*/
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#include <common.h>
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#include <dfu.h>
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#include <env.h>
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#include <memalign.h>
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#include <mtd.h>
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#define DFU_ALT_BUF_LEN SZ_1K
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static void board_get_alt_info(struct mtd_info *mtd, char *buf)
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{
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struct mtd_info *part;
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bool first = true;
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const char *name;
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int len, partnum = 0;
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name = mtd->name;
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len = strlen(buf);
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if (buf[0] != '\0')
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len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, "&");
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len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
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"mtd %s=", name);
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list_for_each_entry(part, &mtd->partitions, node) {
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partnum++;
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if (!first)
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len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, ";");
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first = false;
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len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
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"%s part %d",
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part->name, partnum);
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}
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}
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void set_dfu_alt_info(char *interface, char *devstr)
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{
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struct mtd_info *mtd;
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ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
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if (env_get("dfu_alt_info"))
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return;
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memset(buf, 0, sizeof(buf));
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/*
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* Currently dfu_alt_info is needed on Qemu ARM64 for
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* capsule updates
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*/
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if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT) &&
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IS_ENABLED(CONFIG_TARGET_QEMU_ARM_64BIT)) {
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/* probe all MTD devices */
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mtd_probe_devices();
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mtd = get_mtd_device_nm("nor0");
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if (!IS_ERR_OR_NULL(mtd))
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board_get_alt_info(mtd, buf);
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}
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env_set("dfu_alt_info", buf);
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printf("dfu_alt_info set\n");
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}
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