fix sysboot's dtb

Signed-off-by: surenyi <surenyi82@163.com>

arch/arm/mach-rockchip/boot_rkimg.c

@@ -462,6 +462,23 @@ static int fdt_check_hash(void *fdt_addr, u32 fdt_size,
 #endif	/* CONFIG_ROCKCHIP_DTB_VERIFY */
 
 #if defined(CONFIG_ROCKCHIP_EARLY_DISTRO_DTB)
+/* {{{ get bootpart */
+static int get_boot_part_num(void)
+{
+    int part_id;
+    disk_partition_t part;
+    struct blk_desc *blkdev;
+
+    blkdev = rockchip_get_bootdev();
+    if (blkdev) {
+        if ((part_id = part_get_info_by_name(blkdev, PART_BOOT, &part)) > 0) {
+            return part_id;
+        }
+    }
+    return -ENODEV;
+}
+/* }}} */
+
 static int rockchip_read_distro_dtb(void *fdt_addr)
 {
 	const char *cmd = "part list ${devtype} ${devnum} -bootable devplist";
@@ -469,6 +486,7 @@ static int rockchip_read_distro_dtb(void *fdt_addr)
 	char devnum_part[12];
 	char fdt_hex_str[19];
 	char *fs_argv[5];
+    int part_id;
 
 	if (!rockchip_get_bootdev() || !fdt_addr)
 		return -ENODEV;
@@ -478,13 +496,19 @@ static int rockchip_read_distro_dtb(void *fdt_addr)
 		return -EINVAL;
 	}
 
-	devplist = env_get("devplist");
-	if (!devplist)
-		devplist = "1";
+    part_id = get_boot_part_num();
+    if (part_id <= 0) {
+        devplist = env_get("devplist");
+        if (!devplist) {
+            part_id = 1;
+        } else {
+            part_id = strtoul(devplist, NULL, 16);
+        }
+    }
 
 	devtype = env_get("devtype");
 	devnum = env_get("devnum");
-	sprintf(devnum_part, "%s:%s", devnum, devplist);
+    sprintf(devnum_part, "%s:%d", devnum, part_id);
 	sprintf(fdt_hex_str, "0x%lx", (ulong)fdt_addr);
 
 	fs_argv[0] = "load";

configs/sytc_defconfig

@@ -235,3 +235,5 @@ CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_OFFSET=0x400000
 CONFIG_ENV_SIZE=0x100000
 CONFIG_CMD_ENV_FLAGS=y
+CONFIG_ROCKCHIP_EARLY_DISTRO_DTB=y
+CONFIG_ROCKCHIP_EARLY_DISTRO_DTB_PATH="/rk3588-sytc.dtb"