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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2020 Linaro Limited
*/
#include <common.h>
#include <dm.h>
#include <mtd.h>
#include <linux/string.h>
#define MTDPARTS_LEN 256
#define MTDIDS_LEN 128
static void board_get_mtdparts(const char *dev, const char *partition,
char *mtdids, char *mtdparts)
{
/* mtdids: "<dev>=<dev>, ...." */
if (mtdids[0] != '\0')
strcat(mtdids, ",");
strcat(mtdids, dev);
strcat(mtdids, "=");
strcat(mtdids, dev);
/* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */
if (mtdparts[0] != '\0')
strncat(mtdparts, ";", MTDPARTS_LEN);
else
strcat(mtdparts, "mtdparts=");
strncat(mtdparts, dev, MTDPARTS_LEN);
strncat(mtdparts, ":", MTDPARTS_LEN);
strncat(mtdparts, partition, MTDPARTS_LEN);
}
void board_mtdparts_default(const char **mtdids, const char **mtdparts)
{
struct mtd_info *mtd;
struct udevice *dev;
const char *mtd_partition;
static char parts[3 * MTDPARTS_LEN + 1];
static char ids[MTDIDS_LEN + 1];
static bool mtd_initialized;
if (mtd_initialized) {
*mtdids = ids;
*mtdparts = parts;
return;
}
memset(parts, 0, sizeof(parts));
memset(ids, 0, sizeof(ids));
/* Currently mtdparts is needed on Qemu ARM64 for capsule updates */
if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT) &&
IS_ENABLED(CONFIG_TARGET_QEMU_ARM_64BIT)) {
/* probe all MTD devices */
for (uclass_first_device(UCLASS_MTD, &dev); dev;
uclass_next_device(&dev)) {
debug("mtd device = %s\n", dev->name);
}
mtd = get_mtd_device_nm("nor0");
if (!IS_ERR_OR_NULL(mtd)) {
mtd_partition = CONFIG_MTDPARTS_NOR0;
board_get_mtdparts("nor0", mtd_partition, ids, parts);
put_mtd_device(mtd);
}
mtd = get_mtd_device_nm("nor1");
if (!IS_ERR_OR_NULL(mtd)) {
mtd_partition = CONFIG_MTDPARTS_NOR1;
board_get_mtdparts("nor1", mtd_partition, ids, parts);
put_mtd_device(mtd);
}
}
mtd_initialized = true;
*mtdids = ids;
*mtdparts = parts;
debug("%s:mtdids=%s & mtdparts=%s\n", __func__, ids, parts);
}
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