[U-Boot] [PATCH] ARM: omap3: evm: Add kernel image loading from UBIFS and EXT4

7 Jan 2018

This commit adds UBIFS_NAND to BOOT_TARGET_DEVICES. This will
allow the kernel zImage to be loaded from '/boot/zImage' in UBIFS
(ubi0:rootfs).
Additionally update the *_MMC devices to also load kernel image from
the MMC 0:2 EXT4 file system.
DISTRO_DEFAULTS Setup
=====================
[primary] Check MMC 0:1 for /extlinux/extlinux.conf and boot
[fallback 1] Check MMC 0:2 /boot/zImage and run mmcbootz
[fallback 2] Check MMC 0:2 /boot/uImage and run mmcboot
[fallback 3] Check NAND UBIFS /boot/zImage and run nandbootubifs
[fallback 4] Check NAND partitions and run nandboot
The following "extlinux.conf" can be used to load images in the
top-level of the MMC 0:1 FAT partition.
[MMC(0:1)/extlinux/extlinux.conf]
---8<-------------------------------------------------------------------
default omap3-evm
label omap3-evm
    kernel /zImage
    fdt /omap3-evm.dtb
    append console=ttyO0,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait
---8<-------------------------------------------------------------------
Signed-off-by: Derald D. Woods woods.technical@gmail.com
---
 include/configs/omap3_evm.h | 57 +++++++++++++++++++++++++++++++--------------
 1 file changed, 40 insertions(+), 17 deletions(-)

diff --git a/include/configs/omap3_evm.h b/include/configs/omap3_evm.h
index d95ccdf035..3ecfdbb3ce 100644
--- a/include/configs/omap3_evm.h
+++ b/include/configs/omap3_evm.h
@@ -89,28 +89,35 @@
 #define MEM_LAYOUT_ENV_SETTINGS \
    DEFAULT_LINUX_BOOT_ENV
-#if defined(CONFIG_NAND)
+#if defined(CONFIG_NAND) && defined(CONFIG_CMD_UBI)
+/* NAND boot with uImage from NAND 'kernel' partition */
 #define BOOTENV_DEV_NAND(devtypeu, devtypel, instance) \
    "bootcmd_" #devtypel #instance "=" \
    "run nandboot\0"
-
 #define BOOTENV_DEV_NAME_NAND(devtypeu, devtypel, instance) \
    #devtypel #instance " "
-#endif /* CONFIG_NAND */
+/* NAND boot with zImage from UBIFS '/boot/zImage' */
+#define BOOTENV_DEV_UBIFS_NAND(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel #instance "=" \
+	"run nandbootubifs\0"
+#define BOOTENV_DEV_NAME_UBIFS_NAND(devtypeu, devtypel, instance) \
+	#devtypel #instance " "
+#endif /* CONFIG_NAND && CONFIG_CMD_UBI */
+
+/* MMC boot with uImage from MMC 0:2 '/boot/uImage' */
 #define BOOTENV_DEV_UIMAGE_MMC(devtypeu, devtypel, instance) \
    "bootcmd_" #devtypel #instance "=" \
    	"setenv mmcdev " #instance"; " \
    	"run mmcboot\0"
-
 #define BOOTENV_DEV_NAME_UIMAGE_MMC(devtypeu, devtypel, instance) \
    #devtypel #instance " "
+/* MMC boot with zImage from MMC 0:2 '/boot/zImage' */
 #define BOOTENV_DEV_ZIMAGE_MMC(devtypeu, devtypel, instance) \
    "bootcmd_" #devtypel #instance "=" \
    	"setenv mmcdev " #instance"; " \
    	"run mmcbootz\0"
-
 #define BOOTENV_DEV_NAME_ZIMAGE_MMC(devtypeu, devtypel, instance) \
    #devtypel #instance " "
@@ -118,6 +125,7 @@
    func(MMC, mmc, 0) \
    func(ZIMAGE_MMC, zimage_mmc, 0) \
    func(UIMAGE_MMC, uimage_mmc, 0) \
+	func(UBIFS_NAND, ubifs_nand, 0) \
    func(NAND, nand, 0)
#include <config_distro_bootcmd.h>
@@ -128,9 +136,11 @@
    "mtdids=" CONFIG_MTDIDS_DEFAULT "\0" \
    "mtdparts=" CONFIG_MTDPARTS_DEFAULT "\0" \
    "fdt_high=0xffffffff\0" \
+	"bootdir=/boot\0" \
    "bootenv=uEnv.txt\0" \
    "optargs=\0" \
    "mmcdev=0\0" \
+	"mmcpart=2\0" \
    "console=ttyO0,115200n8\0" \
    "mmcargs=setenv bootargs console=${console} " \
    	"${mtdparts} " \
@@ -143,39 +153,52 @@
    	"root=ubi0:rootfs rw ubi.mtd=rootfs noinitrd " \
    	"rootfstype=ubifs rootwait\0" \
    "loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"ext4bootenv=ext4load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bootdir}/${bootenv}\0" \
    "importbootenv=echo Importing environment from mmc ...; " \
    	"env import -t ${loadaddr} ${filesize}\0" \
-	"mmcbootenv=" \
-		"mmc dev ${mmcdev}; " \
-		"if mmc rescan && run loadbootenv; then " \
-			"run importbootenv; " \
+	"mmcbootenv=mmc dev ${mmcdev}; " \
+		"if mmc rescan; then " \
+			"run loadbootenv && run importbootenv; " \
+			"run ext4bootenv && run importbootenv; " \
    		"if test -n $uenvcmd; then " \
    			"echo Running uenvcmd ...; " \
    			"run uenvcmd; " \
    		"fi; " \
    	"fi\0" \
    "loaduimage=setenv bootfile uImage; " \
-		"fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
+		"ext4load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
    "loadzimage=setenv bootfile zImage; " \
-		"fatload mmc ${mmcdev} ${loadaddr} zImage\0" \
-	"loaddtb=fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}\0" \
+		"ext4load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loaddtb=ext4load mmc ${mmcdev}:${mmcpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"loadubizimage=setenv bootfile zImage; " \
+		"ubifsload ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadubidtb=ubifsload ${fdtaddr} ${bootdir}/${fdtfile}\0" \
    "mmcboot=run mmcbootenv; " \
    	"if run loaduimage && run loaddtb; then " \
-			"echo Booting ${bootfile} from mmc ...; " \
+			"echo Booting ${bootdir}/${bootfile} from mmc ${mmcdev}:${mmcpart} ...; " \
    		"run mmcargs; " \
    		"bootm ${loadaddr} - ${fdtaddr}; " \
    	"fi\0" \
    "mmcbootz=run mmcbootenv; " \
    	"if run loadzimage && run loaddtb; then " \
-			"echo Booting ${bootfile} from mmc ...; " \
+			"echo Booting ${bootdir}/${bootfile} from mmc ${mmcdev}:${mmcpart} ...; " \
    		"run mmcargs; " \
-			"bootz ${loadaddr} - ${fdtaddr};" \
+			"bootz ${loadaddr} - ${fdtaddr}; " \
    	"fi\0" \
-	"nandboot=echo Booting uImage from nand ...; " \
-		"run nandargs; " \
+	"nandboot=" \
    	"nand read ${loadaddr} kernel; " \
    	"nand read ${fdtaddr} dtb; " \
+		"echo Booting uImage from NAND MTD 'kernel' partition ...; " \
+		"run nandargs; " \
    	"bootm ${loadaddr} - ${fdtaddr}\0" \
+	"nandbootubifs=" \
+		"ubi part rootfs; " \
+		"ubifsmount ubi0:rootfs; " \
+		"if run loadubizimage && run loadubidtb; then " \
+			"echo Booting ${bootdir}/${bootfile} from NAND ubi0:rootfs ...; " \
+			"run nandargs; " \
+			"bootz ${loadaddr} - ${fdtaddr}; " \
+		"fi\0" \
    BOOTENV
#endif /* __CONFIG_H */
-- 
2.15.1


    