ti_armv7_common: env: Add support for loading FIT images

FIT is a new image format which is a Tree like structure and gives more
flexibility in handling of various images. Mainly used for unification of
multiple images in a single blob and provide security information for each
image.

U-Boot already has support for loading such images, so adding the environment
support to load FIT image on all TI platforms.

Reviewed-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/configs/am335x_evm.h

@@ -91,6 +91,9 @@
 	func(DHCP, dhcp, na)
 
 #define CONFIG_BOOTCOMMAND \
+	"if test ${boot_fit} -eq 1; then "	\
+		"run update_to_fit;"	\
+	"fi;"	\
 	"run findfdt; " \
 	"run init_console; " \
 	"run envboot; " \
@@ -102,6 +105,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \
 	DEFAULT_MMC_TI_ARGS \
+	DEFAULT_FIT_TI_ARGS \
 	"bootpart=0:2\0" \
 	"bootdir=/boot\0" \
 	"bootfile=zImage\0" \

include/configs/am43xx_evm.h

@@ -176,6 +176,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \
 	DEFAULT_MMC_TI_ARGS \
+	DEFAULT_FIT_TI_ARGS \
 	"fdtfile=undefined\0" \
 	"bootpart=0:2\0" \
 	"bootdir=/boot\0" \
@@ -239,6 +240,9 @@
 	DFUARGS \
 
 #define CONFIG_BOOTCOMMAND \
+	"if test ${boot_fit} -eq 1; then "	\
+		"run update_to_fit;"	\
+	"fi;"	\
 	"run findfdt; " \
 	"run envboot;" \
 	"run mmcboot;" \

include/configs/ti_armv7_common.h

@@ -110,10 +110,23 @@
 		"if mmc rescan; then " \
 			"echo SD/MMC found on device ${mmcdev};" \
 			"if run loadimage; then " \
-				"run mmcloados;" \
+				"if test ${boot_fit} -eq 1; then " \
+					"run loadfit; " \
+				"else " \
+					"run mmcloados;" \
+				"fi;" \
 			"fi;" \
 		"fi;\0" \
 
+#define DEFAULT_FIT_TI_ARGS \
+	"boot_fit=0\0" \
+	"fit_loadaddr=0x88000000\0" \
+	"fit_bootfile=fitImage.itb\0" \
+	"update_to_fit=setenv loadaddr ${fit_loadaddr}; setenv bootfile ${fit_bootfile}\0" \
+	"args_fit=setenv bootargs console=${console} \0" \
+	"loadfit=run args_fit; bootm ${loadaddr}:kernel@1 " \
+		"${loadaddr}:ramdisk@1 ${loadaddr}:${fdtfile};\0" \
+
 /*
  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
  * we say (for simplicity) that we have 1 bank, always, even when

include/configs/ti_omap4_common.h

@@ -98,6 +98,9 @@
 	func(DHCP, dhcp, na)
 
 #define CONFIG_BOOTCOMMAND \
+	"if test ${boot_fit} -eq 1; then "	\
+		"run update_to_fit;"	\
+	"fi;"	\
 	"run findfdt; " \
 	"run envboot; " \
 	"run distro_bootcmd"
@@ -107,6 +110,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \
 	DEFAULT_MMC_TI_ARGS \
+	DEFAULT_FIT_TI_ARGS \
 	"console=ttyO2,115200n8\0" \
 	"fdtfile=undefined\0" \
 	"bootpart=0:2\0" \

include/configs/ti_omap5_common.h

@@ -65,6 +65,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \
 	DEFAULT_MMC_TI_ARGS \
+	DEFAULT_FIT_TI_ARGS \
 	"console=" CONSOLEDEV ",115200n8\0" \
 	"fdtfile=undefined\0" \
 	"bootpart=0:2\0" \
@@ -102,6 +103,9 @@
 		"echo Booting into fastboot ...; " \
 		"fastboot " __stringify(CONFIG_FASTBOOT_USB_DEV) "; " \
 	"fi;" \
+	"if test ${boot_fit} -eq 1; then "	\
+		"run update_to_fit;"	\
+	"fi;"	\
 	"run findfdt; " \
 	"run envboot; " \
 	"run mmcboot;" \