nerves_system_bbb

From ade734ae45072d1ea0a9cd792f003e6af830ec79 Mon Sep 17 00:00:00 2001
From: Robert Nelson <robertcnelson@gmail.com>
Date: Fri, 5 Aug 2016 16:19:06 -0500
Subject: [PATCH] am335x_evm: uEnv.txt, bootz, n fixes

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
---
 board/ti/am335x/board.c           |  29 ++++-
 board/ti/am335x/board.h           |   6 +
 board/ti/am335x/mux.c             |  10 +-
 common/spl/spl.c                  |   8 ++
 configs/am335x_evm_defconfig      |   1 -
 include/configs/am335x_evm.h      |  66 +++++++---
 include/configs/ti_armv7_common.h | 255 +++++++++++++++++++++++++++++++++++++-
 7 files changed, 352 insertions(+), 23 deletions(-)

diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index f56d17e..e5608ac 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -481,6 +481,24 @@ void sdram_init(void)
  */
 int board_init(void)
 {
+	u32 sys_reboot;
+
+	sys_reboot = readl(PRM_RSTST);
+	if (sys_reboot & (1 << 9))
+		puts("Reset Source: IcePick reset has occurred.\n");
+
+	if (sys_reboot & (1 << 5))
+		puts("Reset Source: Global external warm reset has occurred.\n");
+
+	if (sys_reboot & (1 << 4))
+		puts("Reset Source: watchdog reset has occurred.\n");
+
+	if (sys_reboot & (1 << 1))
+		puts("Reset Source: Global warm SW reset has occurred.\n");
+
+	if (sys_reboot & (1 << 0))
+		puts("Reset Source: Power-on reset has occurred.\n");
+
 #if defined(CONFIG_HW_WATCHDOG)
 	hw_watchdog_init();
 #endif
@@ -511,6 +529,13 @@ int board_late_init(void)
 	if ( (header.version[0] == 0x1a) && (header.version[1] == 0x00) &&
 	     (header.version[2] == 0x00) && (header.version[3] == 0x00) ) {
 		setenv("board_rev", "BBG1");
+	} else if ( (header.version[0] == 0x30) && (header.version[1] == 0x30) &&
+	            (header.version[2] == 0x41) && (header.version[3] == 0x35) ) {
+		setenv("board_rev", "SE0A");
+		header.version[0] = 0x53;
+		header.version[1] = 0x45;
+		header.version[2] = 0x30;
+		header.version[3] = 0x41;
 	} else {
 		strncpy(safe_string, (char *)header.version, sizeof(header.version));
 		safe_string[sizeof(header.version)] = 0;
@@ -627,7 +652,7 @@ int board_eth_init(bd_t *bis)
 	if (read_eeprom(&header) < 0)
 		puts("Could not get board ID.\n");
 
-	if (board_is_bone(&header) || board_is_bone_lt(&header) ||
+	if (board_is_bone(&header) || (board_is_bone_lt(&header) && !board_is_bone_lt_enhanced(&header)) ||
 	    board_is_idk(&header)) {
 		writel(MII_MODE_ENABLE, &cdev->miisel);
 		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
@@ -657,7 +682,7 @@ int board_eth_init(bd_t *bis)
 #define AR8051_DEBUG_RGMII_CLK_DLY_REG	0x5
 #define AR8051_RGMII_TX_CLK_DLY		0x100
 
-	if (board_is_evm_sk(&header) || board_is_gp_evm(&header)) {
+	if (board_is_evm_sk(&header) || board_is_gp_evm(&header) || board_is_bone_lt_enhanced(&header)) {
 		const char *devname;
 		devname = miiphy_get_current_dev();
 
diff --git a/board/ti/am335x/board.h b/board/ti/am335x/board.h
index bc700d5..f083483 100644
--- a/board/ti/am335x/board.h
+++ b/board/ti/am335x/board.h
@@ -39,6 +39,12 @@ static inline int board_is_bone_lt(struct am335x_baseboard_id *header)
 	return !strncmp(header->name, "A335BNLT", HDR_NAME_LEN);
 }
 
+static inline int board_is_bone_lt_enhanced(struct am335x_baseboard_id *header)
+{
+	return (board_is_bone_lt(header) &&
+			strncmp("SE", header->version, 2) <= 0);
+}
+
 static inline int board_is_evm_sk(struct am335x_baseboard_id *header)
 {
 	return !strncmp("A335X_SK", header->name, HDR_NAME_LEN);
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index 79ed02f..e12d769 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -354,8 +354,14 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
 		configure_module_pin_mux(rgmii1_pin_mux);
 		configure_module_pin_mux(mmc0_pin_mux_sk_evm);
 	} else if (board_is_bone_lt(header)) {
-		/* Beaglebone LT pinmux */
-		configure_module_pin_mux(mii1_pin_mux);
+		if(board_is_bone_lt_enhanced(header)) {
+			/* SanCloud Beaglebone LT Enhanced pinmux */
+			configure_module_pin_mux(rgmii1_pin_mux);
+		}
+		else {
+			/* Beaglebone LT pinmux */
+			configure_module_pin_mux(mii1_pin_mux);
+		}
 		configure_module_pin_mux(mmc0_pin_mux);
 #if defined(CONFIG_NAND) && defined(CONFIG_EMMC_BOOT)
 		configure_module_pin_mux(nand_pin_mux);
diff --git a/common/spl/spl.c b/common/spl/spl.c
index e5167bf..07b77b1 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -465,6 +465,14 @@ ulong spl_relocate_stack_gd(void)
 #if !defined(CONFIG_ARM)
 	gd = new_gd;
 #endif
+
+	/* revert:
+	 * http://git.denx.de/?p=u-boot.git;a=commit;h=8656c4f76f012254a1a01d6d7956d85d7d3d73bf
+	 * fixes 1GB am335x
+	 */
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
 	return ptr;
 #else
 	return 0;
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig
index 7753ab5..8699953 100644
--- a/configs/am335x_evm_defconfig
+++ b/configs/am335x_evm_defconfig
@@ -3,7 +3,6 @@ CONFIG_TARGET_AM335X_EVM=y
 CONFIG_SPL_STACK_R_ADDR=0x82000000
 CONFIG_SPL=y
 CONFIG_SPL_STACK_R=y
-CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n"
 CONFIG_AUTOBOOT_DELAY_STR="d"
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 6ebe0b3..c31b373 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -17,6 +17,7 @@
 #define __CONFIG_AM335X_EVM_H
 
 #include <configs/ti_am335x_common.h>
+#define CONFIG_ENV_IS_NOWHERE
 
 #ifndef CONFIG_SPL_BUILD
 #ifndef CONFIG_FIT
@@ -69,9 +70,14 @@
 
 #define BOOTENV_DEV_LEGACY_MMC(devtypeu, devtypel, instance) \
 	"bootcmd_" #devtypel #instance "=" \
+	"gpio clear 56; " \
+	"gpio clear 55; " \
+	"gpio clear 54; " \
+	"gpio set 53; " \
+	"setenv interface mmc; " \
 	"setenv mmcdev " #instance"; "\
-	"setenv bootpart " #instance":2 ; "\
-	"run mmcboot\0"
+	"setenv bootpart " #instance":1 ; "\
+	"run boot\0"
 
 #define BOOTENV_DEV_NAME_LEGACY_MMC(devtypeu, devtypel, instance) \
 	#devtypel #instance " "
@@ -124,19 +130,24 @@
 		"root=${spiroot} " \
 		"rootfstype=${spirootfstype}\0" \
 	"bootenv=uEnv.txt\0" \
-	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
-	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
+	"script=boot.scr\0" \
+	"scriptfile=${script}\0" \
+	"loadbootscript=load ${interface} ${bootpart} ${loadaddr} ${scriptfile};\0" \
+	"bootscript=echo Running bootscript from mmc${bootpart} ...; " \
 		"source ${loadaddr}\0" \
-	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
-	"importbootenv=echo Importing environment from mmc ...; " \
+	"loadbootenv=load ${interface} ${bootpart} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from ${interface} ...; " \
 		"env import -t -r $loadaddr $filesize\0" \
 	"ramargs=setenv bootargs console=${console} " \
 		"${optargs} " \
 		"root=${ramroot} " \
 		"rootfstype=${ramrootfstype}\0" \
-	"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
-	"loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
-	"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"loadramdisk=load ${interface} ${mmcdev} ${rdaddr} ramdisk.gz\0" \
+	"loadimage=load ${interface} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadrd=load ${interface} ${bootpart} ${rdaddr} ${bootdir}/${rdfile}; setenv rdsize ${filesize}\0" \
+	"loadfdt=echo loading ${fdtdir}/${fdtfile} ...; load ${interface} ${bootpart} ${fdtaddr} ${fdtdir}/${fdtfile}\0" \
+	"failumsboot=echo; echo FAILSAFE: U-Boot UMS (USB Mass Storage) enabled, media now available over the usb slave port ...; " \
+		"ums 0 ${interface} 1;\0" \
 	"mmcloados=run args_mmc; " \
 		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
 			"if run loadfdt; then " \
@@ -151,8 +162,8 @@
 		"else " \
 			"bootz; " \
 		"fi;\0" \
-	"mmcboot=mmc dev ${mmcdev}; " \
-		"if mmc rescan; then " \
+	"mmcboot=${interface} dev ${mmcdev}; " \
+		"if ${interface} rescan; then " \
 			"echo SD/MMC found on device ${mmcdev};" \
 			"if run loadbootscript; then " \
 				"run bootscript;" \
@@ -180,12 +191,32 @@
 		"bootz ${loadaddr} ${rdaddr} ${fdtaddr}\0" \
 	"findfdt="\
 		"if test $board_name = A335BONE; then " \
-			"setenv fdtfile am335x-bone.dtb; fi; " \
+			"setenv fdtfile am335x-bone.dtb; setenv fdtbase am335x-bone; fi; " \
 		"if test $board_name = A335BNLT; then " \
-			"if test $board_rev = BBG1; then " \
-				"setenv fdtfile am335x-bonegreen.dtb; " \
+			"if test $board_rev = BLA0; then " \
+				"setenv fdtfile am335x-boneblue.dtb; setenv fdtbase am335x-boneblue; " \
+			"elif test $board_rev = BBG1; then " \
+				"setenv fdtfile am335x-bonegreen.dtb; setenv fdtbase am335x-bonegreen; " \
+			"elif test $board_rev = GW1A; then " \
+				"setenv fdtfile am335x-bonegreen-wireless.dtb; setenv fdtbase am335x-bonegreen-wireless; " \
+			"elif test $board_rev = AIA0; then " \
+				"setenv fdtfile am335x-abbbi.dtb; setenv fdtbase am335x-abbbi; " \
+			"elif test $board_rev = EIA0; then " \
+				"setenv fdtfile am335x-boneblack.dtb; setenv fdtbase am335x-boneblack; " \
+			"elif test $board_rev = SE0A; then " \
+				"setenv fdtfile am335x-sancloud-bbe.dtb; setenv fdtbase am335x-sancloud-bbe; " \
+			"elif test $board_rev = ME06; then " \
+				"setenv fdtfile am335x-bonegreen.dtb; setenv fdtbase am335x-bonegreen; " \
+			"elif test $board_rev = M10A; then " \
+				"setenv fdtfile am335x-boneblack.dtb; setenv fdtbase am335x-boneblack; " \
+			"elif test $board_rev = GH01; then " \
+				"setenv fdtfile am335x-boneblack.dtb; setenv fdtbase am335x-boneblack; " \
+			"elif test $board_rev = BWA0; then " \
+				"setenv fdtfile am335x-boneblack-wireless.dtb; setenv fdtbase am335x-boneblack-wireless; " \
+			"elif test $board_rev = BWA3; then " \
+				"setenv fdtfile am335x-boneblack-wireless.dtb; setenv fdtbase am335x-boneblack-wireless; " \
 			"else " \
-				"setenv fdtfile am335x-boneblack.dtb; " \
+				"setenv fdtfile am335x-boneblack.dtb; setenv fdtbase am335x-boneblack; " \
 			"fi; " \
 		"fi; " \
 		"if test $board_name = A33515BB; then " \
@@ -194,6 +225,9 @@
 			"setenv fdtfile am335x-evmsk.dtb; fi; " \
 		"if test $fdtfile = undefined; then " \
 			"echo WARNING: Could not determine device tree to use; fi; \0" \
+	EEWIKI_NFS \
+	EEWIKI_BOOT \
+	EEWIKI_UNAME_BOOT \
 	NANDARGS \
 	NETARGS \
 	DFUARGS \
@@ -471,6 +505,8 @@
 #define CONFIG_PHY_GIGE
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_SMSC
+#define CONFIG_PHY_ATHEROS
+#define CONFIG_PHY_VITESSE
 
 /*
  * NOR Size = 16 MiB
diff --git a/include/configs/ti_armv7_common.h b/include/configs/ti_armv7_common.h
index 199612b..491f822 100644
--- a/include/configs/ti_armv7_common.h
+++ b/include/configs/ti_armv7_common.h
@@ -60,11 +60,260 @@
 #define DEFAULT_MMC_TI_ARGS \
 	"mmcdev=0\0" \
 	"mmcrootfstype=ext4 rootwait\0" \
-	"finduuid=part uuid mmc 0:2 uuid\0" \
+	"finduuid=part uuid ${interface} ${bootpart} uuid\0" \
 	"args_mmc=run finduuid;setenv bootargs console=${console} " \
 		"${optargs} " \
-		"root=PARTUUID=${uuid} rw " \
-		"rootfstype=${mmcrootfstype}\0"
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=PARTUUID=${uuid} ro " \
+		"rootfstype=${mmcrootfstype} " \
+		"${cmdline}\0" \
+	"args_mmc_old=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=${oldroot} ro " \
+		"rootfstype=${mmcrootfstype} " \
+		"${cmdline}\0" \
+	"args_mmc_uuid=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=UUID=${uuid} ro " \
+		"rootfstype=${mmcrootfstype} " \
+		"${cmdline}\0" \
+	"args_uenv_root=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=${uenv_root} ro " \
+		"rootfstype=${mmcrootfstype} " \
+		"${cmdline}\0" \
+	"args_netinstall=setenv bootargs ${netinstall_bootargs} " \
+		"${optargs} " \
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=/dev/ram rw " \
+		"${cmdline}\0"
+
+#define EEWIKI_NFS \
+	"server_ip=192.168.1.100\0" \
+	"gw_ip=192.168.1.1\0" \
+	"netmask=255.255.255.0\0" \
+	"hostname=\0" \
+	"device=eth0\0" \
+	"autoconf=off\0" \
+	"root_dir=/home/userid/targetNFS\0" \
+	"tftp_dir=\0" \
+	"nfs_options=,vers=3\0" \
+	"nfsrootfstype=ext4 rootwait fixrtc\0" \
+	"nfsargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"${cape_disable} " \
+		"${cape_enable} " \
+		"root=/dev/nfs rw " \
+		"rootfstype=${nfsrootfstype} " \
+		"nfsroot=${nfsroot} " \
+		"ip=${ip} " \
+		"${cmdline}\0" \
+	"nfsboot=echo Booting from ${server_ip} ...; " \
+		"setenv nfsroot ${server_ip}:${root_dir}${nfs_options}; " \
+		"setenv ip ${client_ip}:${server_ip}:${gw_ip}:${netmask}:${hostname}:${device}:${autoconf}; " \
+		"setenv autoload no; " \
+		"setenv serverip ${server_ip}; " \
+		"setenv ipaddr ${client_ip}; " \
+		"tftp ${loadaddr} ${tftp_dir}${bootfile}; " \
+		"tftp ${fdtaddr} ${tftp_dir}dtbs/${fdtfile}; " \
+		"run nfsargs; " \
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
+	"nfsboot_uname_r=echo Booting from ${server_ip} ...; " \
+		"setenv nfsroot ${server_ip}:${root_dir}${nfs_options}; " \
+		"setenv ip ${client_ip}:${server_ip}:${gw_ip}:${netmask}:${hostname}:${device}:${autoconf}; " \
+		"setenv autoload no; " \
+		"setenv serverip ${server_ip}; " \
+		"setenv ipaddr ${client_ip}; " \
+		"tftp ${loadaddr} ${tftp_dir}vmlinuz-${uname_r}; " \
+		"tftp ${fdtaddr} ${tftp_dir}dtbs/${uname_r}/${fdtfile}; " \
+		"run nfsargs; " \
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
+
+#define EEWIKI_BOOT \
+	"boot=${interface} dev ${mmcdev}; " \
+		"if ${interface} rescan; then " \
+			"gpio set 54;" \
+			"setenv bootpart ${mmcdev}:1; " \
+			"if test -e ${interface} ${bootpart} /etc/fstab; then " \
+				"setenv mmcpart 1;" \
+			"fi; " \
+			"echo Checking for: /uEnv.txt ...;" \
+			"if test -e ${interface} ${bootpart} /uEnv.txt; then " \
+				"if run loadbootenv; then " \
+					"gpio set 55;" \
+					"echo Loaded environment from ${bootenv};" \
+					"run importbootenv;" \
+				"fi;" \
+				"if test -n ${cape}; then " \
+					"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtbase}-${cape}.dtb; then " \
+						"setenv fdtfile ${fdtbase}-${cape}.dtb; " \
+					"fi; " \
+					"echo using: $fdtfile...; " \
+				"fi; " \
+				"echo Checking if uenvcmd is set ...;" \
+				"if test -n ${uenvcmd}; then " \
+					"gpio set 56; " \
+					"echo Running uenvcmd ...;" \
+					"run uenvcmd;" \
+				"fi;" \
+				"echo Checking if client_ip is set ...;" \
+				"if test -n ${client_ip}; then " \
+					"if test -n ${dtb}; then " \
+						"setenv fdtfile ${dtb};" \
+						"echo using ${fdtfile} ...;" \
+					"fi;" \
+					"gpio set 56; " \
+					"if test -n ${uname_r}; then " \
+						"echo Running nfsboot_uname_r ...;" \
+						"run nfsboot_uname_r;" \
+					"fi;" \
+					"echo Running nfsboot ...;" \
+					"run nfsboot;" \
+				"fi;" \
+			"fi; " \
+			"echo Checking for: /${script} ...;" \
+			"if test -e ${interface} ${bootpart} /${script}; then " \
+				"gpio set 55;" \
+				"setenv scriptfile ${script};" \
+				"run loadbootscript;" \
+				"echo Loaded script from ${scriptfile};" \
+				"gpio set 56; " \
+				"run bootscript;" \
+			"fi; " \
+			"echo Checking for: /boot/${script} ...;" \
+			"if test -e ${interface} ${bootpart} /boot/${script}; then " \
+				"gpio set 55;" \
+				"setenv scriptfile /boot/${script};" \
+				"run loadbootscript;" \
+				"echo Loaded script from ${scriptfile};" \
+				"gpio set 56; " \
+				"run bootscript;" \
+			"fi; " \
+			"echo Checking for: /boot/uEnv.txt ...;" \
+			"for i in 1 2 3 4 5 6 7 ; do " \
+				"setenv mmcpart ${i};" \
+				"setenv bootpart ${mmcdev}:${mmcpart};" \
+				"if test -e ${interface} ${bootpart} /boot/uEnv.txt; then " \
+					"gpio set 55;" \
+					"load ${interface} ${bootpart} ${loadaddr} /boot/uEnv.txt;" \
+					"env import -t ${loadaddr} ${filesize};" \
+					"echo Loaded environment from /boot/uEnv.txt;" \
+					"if test -n ${cape}; then " \
+						"echo debug: [cape=${cape}] ... ;" \
+						"setenv fdtfile ${fdtbase}-${cape}.dtb; " \
+						"echo Using: dtb=${fdtfile} ...;" \
+					"fi; " \
+					"if test -n ${dtb}; then " \
+						"echo debug: [dtb=${dtb}] ... ;" \
+						"setenv fdtfile ${dtb};" \
+						"echo Using: dtb=${fdtfile} ...;" \
+					"fi;" \
+					"echo Checking if uname_r is set in /boot/uEnv.txt...;" \
+					"if test -n ${uname_r}; then " \
+						"gpio set 56; " \
+						"setenv oldroot /dev/mmcblk${mmcdev}p${mmcpart};" \
+						"echo Running uname_boot ...;" \
+						"run uname_boot;" \
+					"fi;" \
+				"fi;" \
+			"done;" \
+		"fi;\0" \
+
+#define EEWIKI_UNAME_BOOT \
+	"uname_boot="\
+		"setenv bootdir /boot; " \
+		"setenv bootfile vmlinuz-${uname_r}; " \
+		"if test -e ${interface} ${bootpart} ${bootdir}/${bootfile}; then " \
+			"echo loading ${bootdir}/${bootfile} ...; "\
+			"run loadimage;" \
+			"setenv fdtdir /boot/dtbs/${uname_r}; " \
+			"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+				"run loadfdt;" \
+			"else " \
+				"setenv fdtdir /usr/lib/linux-image-${uname_r}; " \
+				"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+					"run loadfdt;" \
+				"else " \
+					"setenv fdtdir /lib/firmware/${uname_r}/device-tree; " \
+					"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+						"run loadfdt;" \
+					"else " \
+						"setenv fdtdir /boot/dtb-${uname_r}; " \
+						"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+							"run loadfdt;" \
+						"else " \
+							"setenv fdtdir /boot/dtbs; " \
+							"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+								"run loadfdt;" \
+							"else " \
+								"setenv fdtdir /boot/dtb; " \
+								"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+									"run loadfdt;" \
+								"else " \
+									"setenv fdtdir /boot; " \
+									"if test -e ${interface} ${bootpart} ${fdtdir}/${fdtfile}; then " \
+										"run loadfdt;" \
+									"else " \
+										"if test -e ${interface} ${bootpart} ${fdtfile}; then " \
+											"run loadfdt;" \
+										"else " \
+											"echo; echo unable to find [dtb=${fdtfile}] did you name it correctly? ...; " \
+											"run failumsboot;" \
+										"fi;" \
+									"fi;" \
+								"fi;" \
+							"fi;" \
+						"fi;" \
+					"fi;" \
+				"fi;" \
+			"fi; " \
+			"setenv rdfile initrd.img-${uname_r}; " \
+			"if test -e ${interface} ${bootpart} ${bootdir}/${rdfile}; then " \
+				"echo loading ${bootdir}/${rdfile} ...; "\
+				"run loadrd;" \
+				"if test -n ${netinstall_enable}; then " \
+					"run args_netinstall; run message;" \
+					"echo debug: [${bootargs}] ... ;" \
+					"echo debug: [bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}] ... ;" \
+					"bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}; " \
+				"fi;" \
+				"if test -n ${uenv_root}; then " \
+					"run args_uenv_root;" \
+					"echo debug: [${bootargs}] ... ;" \
+					"echo debug: [bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}] ... ;" \
+					"bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}; " \
+				"fi;" \
+				"if test -n ${uuid}; then " \
+					"run args_mmc_uuid;" \
+					"echo debug: [${bootargs}] ... ;" \
+					"echo debug: [bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}] ... ;" \
+					"bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}; " \
+				"fi;" \
+				"run args_mmc_old;" \
+				"echo debug: [${bootargs}] ... ;" \
+				"echo debug: [bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}] ... ;" \
+				"bootz ${loadaddr} ${rdaddr}:${rdsize} ${fdtaddr}; " \
+			"else " \
+				"if test -n ${uenv_root}; then " \
+					"run args_uenv_root;" \
+					"echo debug: [${bootargs}] ... ;" \
+					"echo debug: [bootz ${loadaddr} - ${fdtaddr}] ... ;" \
+					"bootz ${loadaddr} - ${fdtaddr}; " \
+				"fi;" \
+				"run args_mmc_old;" \
+				"echo debug: [${bootargs}] ... ;" \
+				"echo debug: [bootz ${loadaddr} - ${fdtaddr}] ... ;" \
+				"bootz ${loadaddr} - ${fdtaddr}; " \
+			"fi;" \
+		"fi;\0" \
 
 /*
  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
-- 
2.7.4