mirror of
https://github.com/AsahiLinux/u-boot
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83 lines
2 KiB
C
83 lines
2 KiB
C
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// 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 <dm.h>
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#include <mtd.h>
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#include <linux/string.h>
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#define MTDPARTS_LEN 256
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#define MTDIDS_LEN 128
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static void board_get_mtdparts(const char *dev, const char *partition,
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char *mtdids, char *mtdparts)
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{
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/* mtdids: "<dev>=<dev>, ...." */
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if (mtdids[0] != '\0')
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strcat(mtdids, ",");
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strcat(mtdids, dev);
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strcat(mtdids, "=");
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strcat(mtdids, dev);
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/* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */
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if (mtdparts[0] != '\0')
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strncat(mtdparts, ";", MTDPARTS_LEN);
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else
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strcat(mtdparts, "mtdparts=");
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strncat(mtdparts, dev, MTDPARTS_LEN);
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strncat(mtdparts, ":", MTDPARTS_LEN);
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strncat(mtdparts, partition, MTDPARTS_LEN);
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}
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void board_mtdparts_default(const char **mtdids, const char **mtdparts)
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{
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struct mtd_info *mtd;
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struct udevice *dev;
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const char *mtd_partition;
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static char parts[3 * MTDPARTS_LEN + 1];
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static char ids[MTDIDS_LEN + 1];
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static bool mtd_initialized;
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if (mtd_initialized) {
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*mtdids = ids;
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*mtdparts = parts;
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return;
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}
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memset(parts, 0, sizeof(parts));
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memset(ids, 0, sizeof(ids));
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/* Currently mtdparts is needed on Qemu ARM64 for capsule updates */
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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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for (uclass_first_device(UCLASS_MTD, &dev); dev;
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uclass_next_device(&dev)) {
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debug("mtd device = %s\n", dev->name);
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}
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mtd = get_mtd_device_nm("nor0");
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if (!IS_ERR_OR_NULL(mtd)) {
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mtd_partition = CONFIG_MTDPARTS_NOR0;
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board_get_mtdparts("nor0", mtd_partition, ids, parts);
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put_mtd_device(mtd);
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}
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mtd = get_mtd_device_nm("nor1");
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if (!IS_ERR_OR_NULL(mtd)) {
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mtd_partition = CONFIG_MTDPARTS_NOR1;
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board_get_mtdparts("nor1", mtd_partition, ids, parts);
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put_mtd_device(mtd);
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}
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}
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mtd_initialized = true;
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*mtdids = ids;
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*mtdparts = parts;
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debug("%s:mtdids=%s & mtdparts=%s\n", __func__, ids, parts);
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}
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