Merge patch series "board/ti: k3 boards: Stop using findfdt"WIP/20Jan2024

Nishanth Menon <nm@ti.com> says:

This is a wide cleanup to switch to setting fdtfile using env_set
instead of scripted magic. 'fdtfile' is expected to be set by default.
This allows the stdboot triggered efi loaders to find the correct OS
device tree file even if regular boot process is interrupted by user
intervention.

This is a refresh of
https://lore.kernel.org/all/86le9dwz4d.fsf@udb0321960.dhcp.ti.com/ which
was the wrong approach.

Updates from V1:
 * Renames of variables and macros for various review comments.
 * Commit message updates in some patches for clarity.

Bootlogs: https://gist.github.com/nmenon/843e343cde645ec4aa57b60cece5256a

based on master: c5e461fbf7cc Merge tag 'u-boot-imx-master-20240108' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx

NOTE: There are a couple of checkpatch WARN (around LATE_INIT) and
CHECK (fdt_ops #ifdeffery) that on closer inspection looks fine and
consistent with other similar usage.

25 files changed, 197 insertions, 48 deletions

diff --git a/board/beagle/beagleboneai64/beagleboneai64.c b/board/beagle/beagleboneai64/beagleboneai64.c
index c8c1c78..c5b4ff7 100644
--- a/board/beagle/beagleboneai64/beagleboneai64.c
+++ b/board/beagle/beagleboneai64/beagleboneai64.c
@@ -28,3 +28,17 @@ int dram_init_banksize(void)
 {
 	return fdtdec_setup_memory_banksize();
 }
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	char fdtfile[50];
+
+	snprintf(fdtfile, sizeof(fdtfile), "%s/%s.dtb",
+		 CONFIG_TI_FDT_FOLDER_PATH, CONFIG_DEFAULT_DEVICE_TREE);
+
+	env_set("fdtfile", fdtfile);
+
+	return 0;
+}
+#endif
diff --git a/board/beagle/beagleboneai64/beagleboneai64.env b/board/beagle/beagleboneai64/beagleboneai64.env
index 4f0a94a..647b25d 100644
--- a/board/beagle/beagleboneai64/beagleboneai64.env
+++ b/board/beagle/beagleboneai64/beagleboneai64.env
@@ -1,5 +1,4 @@
 #include <env/ti/ti_common.env>
-#include <env/ti/default_findfdt.env>
 #include <env/ti/mmc.env>
 
 name_kern=Image
diff --git a/board/beagle/beagleplay/beagleplay.c b/board/beagle/beagleplay/beagleplay.c
index 1c376de..20819ec 100644
--- a/board/beagle/beagleplay/beagleplay.c
+++ b/board/beagle/beagleplay/beagleplay.c
@@ -27,3 +27,17 @@ int dram_init_banksize(void)
 {
 	return fdtdec_setup_memory_banksize();
 }
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	char fdtfile[50];
+
+	snprintf(fdtfile, sizeof(fdtfile), "%s/%s.dtb",
+		 CONFIG_TI_FDT_FOLDER_PATH, CONFIG_DEFAULT_DEVICE_TREE);
+
+	env_set("fdtfile", fdtfile);
+
+	return 0;
+}
+#endif
diff --git a/board/beagle/beagleplay/beagleplay.env b/board/beagle/beagleplay/beagleplay.env
index 4f0a94a..647b25d 100644
--- a/board/beagle/beagleplay/beagleplay.env
+++ b/board/beagle/beagleplay/beagleplay.env
@@ -1,5 +1,4 @@
 #include <env/ti/ti_common.env>
-#include <env/ti/default_findfdt.env>
 #include <env/ti/mmc.env>
 
 name_kern=Image
diff --git a/board/ti/am62ax/am62ax.env b/board/ti/am62ax/am62ax.env
index a6d967e..334374a 100644
--- a/board/ti/am62ax/am62ax.env
+++ b/board/ti/am62ax/am62ax.env
@@ -1,5 +1,4 @@
 #include <env/ti/ti_common.env>
-#include <env/ti/default_findfdt.env>
 #include <env/ti/mmc.env>
 
 name_kern=Image
diff --git a/board/ti/am62ax/evm.c b/board/ti/am62ax/evm.c
index cd3360a..62d3664 100644
--- a/board/ti/am62ax/evm.c
+++ b/board/ti/am62ax/evm.c
@@ -13,6 +13,8 @@
 #include <fdt_support.h>
 #include <spl.h>
 
+#include "../common/fdt_ops.h"
+
 int board_init(void)
 {
 	return 0;
@@ -27,3 +29,11 @@ int dram_init_banksize(void)
 {
 	return fdtdec_setup_memory_banksize();
 }
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	ti_set_fdt_env(NULL, NULL);
+	return 0;
+}
+#endif
diff --git a/board/ti/am62x/am62x.env b/board/ti/am62x/am62x.env
index e53a55c..9cb186c 100644
--- a/board/ti/am62x/am62x.env
+++ b/board/ti/am62x/am62x.env
@@ -1,5 +1,4 @@
 #include <env/ti/ti_common.env>
-#include <env/ti/default_findfdt.env>
 #include <env/ti/mmc.env>
 
 name_kern=Image
diff --git a/board/ti/am62x/evm.c b/board/ti/am62x/evm.c
index ad93908..b76ef1b 100644
--- a/board/ti/am62x/evm.c
+++ b/board/ti/am62x/evm.c
@@ -54,6 +54,14 @@ int dram_init(void)
 	return fdtdec_setup_mem_size_base();
 }
 
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	ti_set_fdt_env(NULL, NULL);
+	return 0;
+}
+#endif
+
 int dram_init_banksize(void)
 {
 	return fdtdec_setup_memory_banksize();
diff --git a/board/ti/am64x/am64x.env b/board/ti/am64x/am64x.env
index efd736b..9a8812d 100644
--- a/board/ti/am64x/am64x.env
+++ b/board/ti/am64x/am64x.env
@@ -2,14 +2,6 @@
 #include <env/ti/mmc.env>
 #include <env/ti/k3_dfu.env>
 
-findfdt=
-	if test $board_name = am64x_gpevm; then
-		setenv name_fdt ti/k3-am642-evm.dtb; fi;
-	if test $board_name = am64x_skevm; then
-		setenv name_fdt ti/k3-am642-sk.dtb; fi;
-	if test $name_fdt = undefined; then
-		echo WARNING: Could not determine device tree to use; fi;
-	setenv fdtfile ${name_fdt}
 name_kern=Image
 console=ttyS2,115200n8
 args_all=setenv optargs earlycon=ns16550a,mmio32,0x02800000 ${mtdparts}
@@ -43,7 +35,6 @@ get_fit_usb=load usb ${bootpart} ${addr_fit}
 usbboot=setenv boot usb;
 	setenv bootpart 0:2;
 	usb start;
-	run findfdt;
 	run init_usb;
 	run get_kern_usb;
 	run get_fdt_usb;
diff --git a/board/ti/am64x/evm.c b/board/ti/am64x/evm.c
index a7ca6be..b8de69d 100644
--- a/board/ti/am64x/evm.c
+++ b/board/ti/am64x/evm.c
@@ -16,6 +16,7 @@
 #include <env.h>
 
 #include "../common/board_detect.h"
+#include "../common/fdt_ops.h"
 
 #define board_is_am64x_gpevm() (board_ti_k3_is("AM64-GPEVM") || \
 				board_ti_k3_is("AM64-EVM") || \
@@ -181,6 +182,12 @@ int checkboard(void)
 }
 
 #ifdef CONFIG_BOARD_LATE_INIT
+static struct ti_fdt_map ti_am64_evm_fdt_map[] = {
+	{"am64x_gpevm", "k3-am642-evm.dtb"},
+	{"am64x_skevm", "k3-am642-sk.dtb"},
+	{ /* Sentinel. */ }
+};
+
 static void setup_board_eeprom_env(void)
 {
 	char *name = "am64x_gpevm";
@@ -198,6 +205,7 @@ static void setup_board_eeprom_env(void)
 
 invalid_eeprom:
 	set_board_info_env_am6(name);
+	ti_set_fdt_env(name, ti_am64_evm_fdt_map);
 }
 
 static void setup_serial(void)
diff --git a/board/ti/am65x/am65x.env b/board/ti/am65x/am65x.env
index 286b9c3..814374d 100644
--- a/board/ti/am65x/am65x.env
+++ b/board/ti/am65x/am65x.env
@@ -5,9 +5,6 @@
 #include <env/ti/k3_rproc.env>
 #endif
 
-findfdt=
-	setenv name_fdt ti/k3-am654-base-board.dtb;
-	setenv fdtfile ${name_fdt}
 name_kern=Image
 console=ttyS2,115200n8
 args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02800000
diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c
index df20902..3109c9a 100644
--- a/board/ti/am65x/evm.c
+++ b/board/ti/am65x/evm.c
@@ -22,6 +22,7 @@
 #include <linux/printk.h>
 
 #include "../common/board_detect.h"
+#include "../common/fdt_ops.h"
 
 #define board_is_am65x_base_board()	board_ti_is("AM6-COMPROCEVM")
 
@@ -141,6 +142,7 @@ static void setup_board_eeprom_env(void)
 
 invalid_eeprom:
 	set_board_info_env_am6(name);
+	ti_set_fdt_env(NULL, NULL);
 }
 
 static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc)
diff --git a/board/ti/common/Kconfig b/board/ti/common/Kconfig
index 49edd98..de44e4d 100644
--- a/board/ti/common/Kconfig
+++ b/board/ti/common/Kconfig
@@ -49,3 +49,15 @@ config TI_COMMON_CMD_OPTIONS
 	imply CMD_SPI
 	imply CMD_TIME
 	imply CMD_USB if USB
+
+config TI_FDT_FOLDER_PATH
+	string "Location of Folder path where dtb is present"
+	default "ti/davinci" if ARCH_DAVINCI
+	default "ti/keystone" if ARCH_KEYSTONE
+	default "ti/omap" if ARCH_OMAP2PLUS
+	default "ti" if ARCH_K3
+	depends on ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
+	help
+	   Folder path for kernel device tree default.
+	   This is used along with fdtfile path to locate the kernel
+	   device tree blob.
diff --git a/board/ti/common/Makefile b/board/ti/common/Makefile
index 26bf12e..5ac361b 100644
--- a/board/ti/common/Makefile
+++ b/board/ti/common/Makefile
@@ -3,3 +3,4 @@
 
 obj-${CONFIG_TI_I2C_BOARD_DETECT} += board_detect.o
 obj-${CONFIG_CMD_EXTENSION} += cape_detect.o
+obj-${CONFIG_OF_LIBFDT} += fdt_ops.o
diff --git a/board/ti/common/fdt_ops.c b/board/ti/common/fdt_ops.c
new file mode 100644
index 0000000..eb917be
--- /dev/null
+++ b/board/ti/common/fdt_ops.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Library to support FDT file operations which are common
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include <env.h>
+#include <vsprintf.h>
+#include "fdt_ops.h"
+
+void ti_set_fdt_env(const char *board_name, struct ti_fdt_map *fdt_map)
+{
+	char *fdt_file_name = NULL;
+	char fdtfile[TI_FDT_FILE_MAX];
+
+	if (board_name) {
+		while (fdt_map) {
+			/* Check for NULL terminator in the list */
+			if (!fdt_map->board_name)
+				break;
+			if (!strncmp(fdt_map->board_name, board_name, TI_BOARD_NAME_MAX)) {
+				fdt_file_name = fdt_map->fdt_file_name;
+				break;
+			}
+			fdt_map++;
+		}
+	}
+
+	/* match not found OR null board_name */
+	if (!fdt_file_name) {
+		/*
+		 * Prioritize CONFIG_DEFAULT_FDT_FILE - if that is not defined,
+		 * or is empty, then use CONFIG_DEFAULT_DEVICE_TREE
+		 */
+#ifdef CONFIG_DEFAULT_FDT_FILE
+		if (strlen(CONFIG_DEFAULT_FDT_FILE)) {
+			snprintf(fdtfile, sizeof(fdtfile), "%s/%s",
+				 CONFIG_TI_FDT_FOLDER_PATH, CONFIG_DEFAULT_FDT_FILE);
+		} else
+#endif
+		{
+			snprintf(fdtfile, sizeof(fdtfile), "%s/%s.dtb",
+				 CONFIG_TI_FDT_FOLDER_PATH, CONFIG_DEFAULT_DEVICE_TREE);
+		}
+	} else {
+		snprintf(fdtfile, sizeof(fdtfile), "%s/%s", CONFIG_TI_FDT_FOLDER_PATH,
+			 fdt_file_name);
+	}
+
+	env_set("fdtfile", fdtfile);
+
+	/*
+	 * XXX: DEPRECATION WARNING: 2 u-boot versions (2024.10).
+	 *
+	 * Maintain compatibility with downstream scripts that may be using
+	 * name_fdt
+	 */
+	if (board_name)
+		env_set("name_fdt", fdtfile);
+	/* Also set the findfdt legacy script to warn users to stop using this */
+	env_set("findfdt",
+		"echo WARN: fdtfile already set. Stop using findfdt in script");
+}
diff --git a/board/ti/common/fdt_ops.h b/board/ti/common/fdt_ops.h
new file mode 100644
index 0000000..5d30499
--- /dev/null
+++ b/board/ti/common/fdt_ops.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Library to support common device tree manipulation for TI EVMs
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com
+ */
+
+#ifndef __FDT_OPS_H
+#define __FDT_OPS_H
+
+#define TI_BOARD_NAME_MAX 20
+#define TI_FDT_FILE_MAX 200
+
+/**
+ *  struct ti_fdt_map - mapping of device tree blob name to board name
+ *  @board_name: board_name up to TI_BOARD_NAME_MAX long
+ *  @fdt_file_name: device tree blob name as described by kernel
+ */
+struct ti_fdt_map {
+	const char *board_name;
+	char *fdt_file_name;
+};
+
+/**
+ * ti_set_fdt_env  - Find the correct device tree file name based on the
+ * board name and set 'fdtfile' env variable with correct folder
+ * structure appropriate to the architecture and Linux kernel's
+ * 'make install_dtbs' conventions. This function is invoked typically
+ * as part of board_late_init.
+ *
+ * fdt name is picked by:
+ * a) If a board name match is found, use the match
+ * b) If not, CONFIG_DEFAULT_FDT_FILE (Boot OS device tree) if that is defined
+ *    and not null
+ * c) If not, Use CONFIG_DEFAULT_DEVICE_TREE (DT control for bootloader)
+ *
+ * @board_name: match to search with (max of TI_BOARD_NAME_MAX chars)
+ * @fdt_map: NULL terminated array of device tree file name matches.
+ */
+void ti_set_fdt_env(const char *board_name, struct ti_fdt_map *fdt_map);
+
+#endif /* __FDT_OPS_H */
diff --git a/board/ti/j721e/evm.c b/board/ti/j721e/evm.c
index c541880..ad6ef45 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -16,6 +16,7 @@
 #include <dm.h>
 
 #include "../common/board_detect.h"
+#include "../common/fdt_ops.h"
 
 #define board_is_j721e_som()	(board_ti_k3_is("J721EX-PM1-SOM") || \
 				 board_ti_k3_is("J721EX-PM2-SOM"))
@@ -424,6 +425,12 @@ void configure_serdes_sierra(void)
 }
 
 #ifdef CONFIG_BOARD_LATE_INIT
+static struct ti_fdt_map ti_j721e_evm_fdt_map[] = {
+	{"j721e", "k3-j721e-common-proc-board.dtb"},
+	{"j721e-sk", "k3-j721e-sk.dtb"},
+	{"j7200", "k3-j7200-common-proc-board.dtb"},
+	{ /* Sentinel. */ }
+};
 static void setup_board_eeprom_env(void)
 {
 	char *name = "j721e";
@@ -443,6 +450,7 @@ static void setup_board_eeprom_env(void)
 
 invalid_eeprom:
 	set_board_info_env_am6(name);
+	ti_set_fdt_env(name, ti_j721e_evm_fdt_map);
 }
 
 static void setup_serial(void)
diff --git a/board/ti/j721e/j721e.env b/board/ti/j721e/j721e.env
index cb27bf5..38bfd7d 100644
--- a/board/ti/j721e/j721e.env
+++ b/board/ti/j721e/j721e.env
@@ -7,16 +7,6 @@
 #include <env/ti/k3_rproc.env>
 #endif
 
-default_device_tree=ti/k3-j721e-common-proc-board.dtb
-findfdt=
-	setenv name_fdt ${default_device_tree};
-	if test $board_name = j721e; then
-		setenv name_fdt ti/k3-j721e-common-proc-board.dtb; fi;
-	if test $board_name = j7200; then
-		setenv name_fdt ti/k3-j7200-common-proc-board.dtb; fi;
-	if test $board_name = j721e-eaik || test $board_name = j721e-sk; then
-		setenv name_fdt ti/k3-j721e-sk.dtb; fi;
-	setenv fdtfile ${name_fdt}
 name_kern=Image
 console=ttyS2,115200n8
 args_all=setenv optargs earlycon=ns16550a,mmio32,0x02800000
diff --git a/board/ti/j721s2/evm.c b/board/ti/j721s2/evm.c
index 1220cd8..5a0281d 100644
--- a/board/ti/j721s2/evm.c
+++ b/board/ti/j721s2/evm.c
@@ -23,6 +23,7 @@
 #include <dm/root.h>
 
 #include "../common/board_detect.h"
+#include "../common/fdt_ops.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -114,6 +115,12 @@ int checkboard(void)
 	return 0;
 }
 
+static struct ti_fdt_map ti_j721s2_evm_fdt_map[] = {
+	{"j721s2", "k3-j721s2-common-proc-board.dtb"},
+	{"am68-sk", "k3-am68-sk-base-board.dtb"},
+	{ /* Sentinel. */ }
+};
+
 static void setup_board_eeprom_env(void)
 {
 	char *name = "j721s2";
@@ -131,6 +138,7 @@ static void setup_board_eeprom_env(void)
 
 invalid_eeprom:
 	set_board_info_env_am6(name);
+	ti_set_fdt_env(name, ti_j721s2_evm_fdt_map);
 }
 
 static void setup_serial(void)
diff --git a/board/ti/j721s2/j721s2.env b/board/ti/j721s2/j721s2.env
index 64e3d9d..9a03b9f 100644
--- a/board/ti/j721s2/j721s2.env
+++ b/board/ti/j721s2/j721s2.env
@@ -7,14 +7,6 @@
 #include <env/ti/k3_rproc.env>
 #endif
 
-default_device_tree=ti/k3-j721s2-common-proc-board.dtb
-findfdt=
-	setenv name_fdt ${default_device_tree};
-	if test $board_name = j721s2; then			\
-		setenv name_fdt ti/k3-j721s2-common-proc-board.dtb; fi;
-	if test $board_name = am68-sk; then
-		setenv name_fdt ti/k3-am68-sk-base-board.dtb; fi;
-	setenv fdtfile ${name_fdt}
 name_kern=Image
 console=ttyS2,115200n8
 args_all=setenv optargs earlycon=ns16550a,mmio32,0x02880000
diff --git a/configs/am62ax_evm_a53_defconfig b/configs/am62ax_evm_a53_defconfig
index 3808358..e5fcd8c 100644
--- a/configs/am62ax_evm_a53_defconfig
+++ b/configs/am62ax_evm_a53_defconfig
@@ -24,6 +24,7 @@ CONFIG_SPL_LOAD_FIT_ADDRESS=0x81000000
 CONFIG_BOOTSTD_FULL=y
 CONFIG_BOOTSTD_DEFAULTS=y
 CONFIG_BOOTCOMMAND="run envboot; bootflow scan -lb"
+CONFIG_BOARD_LATE_INIT=y
 CONFIG_SPL_MAX_SIZE=0x58000
 CONFIG_SPL_PAD_TO=0x0
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
diff --git a/configs/am62x_beagleplay_a53_defconfig b/configs/am62x_beagleplay_a53_defconfig
index 0be2004..1f43891 100644
--- a/configs/am62x_beagleplay_a53_defconfig
+++ b/configs/am62x_beagleplay_a53_defconfig
@@ -33,7 +33,8 @@ CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n"
 CONFIG_AUTOBOOT_DELAY_STR="d"
 CONFIG_AUTOBOOT_STOP_STR=" "
-CONFIG_BOOTCOMMAND="run set_led_state_start_load;run findfdt; run envboot; bootflow scan -lb;run set_led_state_fail_load"
+CONFIG_BOOTCOMMAND="run set_led_state_start_load; run envboot; bootflow scan -lb;run set_led_state_fail_load"
+CONFIG_BOARD_LATE_INIT=y
 CONFIG_SPL_MAX_SIZE=0x58000
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
 CONFIG_SPL_BSS_START_ADDR=0x80c80000
diff --git a/configs/am62x_evm_a53_defconfig b/configs/am62x_evm_a53_defconfig
index aa96c1b..3cf3b93 100644
--- a/configs/am62x_evm_a53_defconfig
+++ b/configs/am62x_evm_a53_defconfig
@@ -32,6 +32,7 @@ CONFIG_BOOTSTD_FULL=y
 CONFIG_BOOTSTD_DEFAULTS=y
 CONFIG_SYS_BOOTM_LEN=0x800000
 CONFIG_BOOTCOMMAND="run envboot; bootflow scan -lb"
+CONFIG_BOARD_LATE_INIT=y
 CONFIG_SPL_MAX_SIZE=0x58000
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
 CONFIG_SPL_BSS_START_ADDR=0x80c80000
diff --git a/configs/j721e_beagleboneai64_a72_defconfig b/configs/j721e_beagleboneai64_a72_defconfig
index 959f868..9e53658 100644
--- a/configs/j721e_beagleboneai64_a72_defconfig
+++ b/configs/j721e_beagleboneai64_a72_defconfig
@@ -34,7 +34,8 @@ CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n"
 CONFIG_AUTOBOOT_DELAY_STR="d"
 CONFIG_AUTOBOOT_STOP_STR=" "
 CONFIG_OF_SYSTEM_SETUP=y
-CONFIG_BOOTCOMMAND="run set_led_state_start_load;run findfdt; run envboot; bootflow scan -lb;run set_led_state_fail_load"
+CONFIG_BOOTCOMMAND="run set_led_state_start_load; run envboot; bootflow scan -lb;run set_led_state_fail_load"
+CONFIG_BOARD_LATE_INIT=y
 CONFIG_LOGLEVEL=7
 CONFIG_SPL_MAX_SIZE=0xc0000
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
diff --git a/include/env/ti/default_findfdt.env b/include/env/ti/default_findfdt.env
deleted file mode 100644
index a2b51dd..0000000
--- a/include/env/ti/default_findfdt.env
+++ /dev/null
@@ -1,12 +0,0 @@
-default_device_tree=CONFIG_DEFAULT_DEVICE_TREE
-default_device_tree_arch=ti
-#ifdef CONFIG_ARM64
-findfdt=
-	setenv name_fdt ${default_device_tree_arch}/${default_device_tree}.dtb;
-	setenv fdtfile ${name_fdt}
-#else
-default_device_tree_subarch=omap
-findfdt=
-	setenv name_fdt ${default_device_tree_arch}/${default_device_tree_subarch}/${default_device_tree}.dtb;
-	setenv fdtfile ${name_fdt}
-#endif