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2023-11-20 2e7bd41e4e8ab3d1efdabd9e263a2f7fe79bff8c

 u-boot/cmd/script_update.c
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@@ -6,6 +6,7 @@
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 #include <common.h>
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 #include <malloc.h>
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+#include <dm/device.h>
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 /*
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  * Script file example:
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@@ -144,6 +145,8 @@
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 			 int argc, char * const argv[])
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 {
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 	struct blk_desc *desc;
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+	struct udevice *dev;
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+	int devnum = -1;
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 	int part_type;
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 	char cmd[128];
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 	char *buf;
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@@ -151,9 +154,31 @@
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 	printf("## retrieving usb_update.txt ...\n");
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-	desc = blk_get_devnum_by_type(IF_TYPE_USB, 0);
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-	if (!desc)
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+	if (run_command("usb reset", 0))
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 		return CMD_RET_FAILURE;
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+
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+	for (blk_first_device(IF_TYPE_USB, &dev);
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+	     dev;
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+	     blk_next_device(&dev)) {
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+		desc = dev_get_uclass_platdata(dev);
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+		if (desc->type == DEV_TYPE_UNKNOWN)
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+			continue;
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+
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+		if (desc->lba > 0L && desc->blksz > 0L) {
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+			devnum = desc->devnum;
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+			break;
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+		}
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+	}
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+	if (devnum < 0) {
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+		printf("No available udisk\n");
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+		return CMD_RET_FAILURE;
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+	}
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+
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+	desc = blk_get_devnum_by_type(IF_TYPE_USB, devnum);
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+	if (!desc) {
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+		printf("No usb %d found\n", devnum);
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+		return CMD_RET_FAILURE;
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+	}
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 	buf = memalign(ARCH_DMA_MINALIGN, SCRIPT_FILE_MAX_SIZE * 2);
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 	if (!buf)
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@@ -162,18 +187,15 @@
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 	part_type = desc->part_type;
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 	desc->part_type = PART_TYPE_DOS;
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-	snprintf(cmd, sizeof(cmd), "usb reset");
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+	printf("## scanning usb %d\n", devnum);
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+	snprintf(cmd, sizeof(cmd), "fatload usb %d 0x%08lx usb_update.txt",
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+		 devnum, (ulong)buf);
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 	ret = run_command(cmd, 0);
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-	if (!ret) {
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-		snprintf(cmd, sizeof(cmd), "fatload usb 0 0x%08lx usb_update.txt", (ulong)buf);
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-		ret = run_command(cmd, 0);
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-	}
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 	if (!ret) {
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 		snprintf(cmd, sizeof(cmd), "script 0x%08lx", (ulong)buf);
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 		ret = run_command(cmd, 0);
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 	}
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 	free(buf);
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-
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 	desc->part_type = part_type;
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 	return ret;