[U-Boot] [PATCH v4 5/8] pico-imx7d: Add boot option for verified boot

Jun Nie jun.nie at linaro.org
Wed May 8 06:38:33 UTC 2019


Add boot option to boot from fitimage to support verified boot.
The boot script plain text file should be packed into fit blob as
image with name of bootscr.

Signed-off-by: Jun Nie <jun.nie at linaro.org>
---
 include/configs/pico-imx7d.h | 38 +++++++++++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

diff --git a/include/configs/pico-imx7d.h b/include/configs/pico-imx7d.h
index 04d316f..1a2736d 100644
--- a/include/configs/pico-imx7d.h
+++ b/include/configs/pico-imx7d.h
@@ -52,11 +52,29 @@
 		"/boot/imx7d-pico-pi.dtb ext4 0 1;" \
 		"rootfs part 0 1\0" \
 
-#define BOOTMENU_ENV \
+/* When booting with FIT specify the node entry containing boot.scr */
+#if defined(CONFIG_FIT)
+#define PICO_BOOT_ENV \
+	"bootscr_fitimage_name=bootscr\0" \
+	"bootscriptaddr=0x83200000\0" \
+	"fdtovaddr=0x83100000\0" \
+	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
+	"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
+	"mmcargs=setenv bootargs console=${console},${baudrate} " \
+		"rootwait rw;\0" \
+	"loadbootscript=" \
+		"load mmc ${mmcdev}:${mmcpart} ${bootscriptaddr} ${script};\0" \
+	"bootscript=echo Running bootscript from mmc ...; " \
+	"source ${bootscriptaddr}:${bootscr_fitimage_name}\0"
+#else
+#define PICO_BOOT_ENV \
 	"bootmenu_0=Boot using PICO-Hobbit baseboard=" \
 		"setenv fdtfile imx7d-pico-hobbit.dtb\0" \
 	"bootmenu_1=Boot using PICO-Pi baseboard=" \
 		"setenv fdtfile imx7d-pico-pi.dtb\0" \
+	BOOTENV
+#endif
+
 
 #define CONFIG_SUPPORT_EMMC_BOOT /* eMMC specific */
 #define CONFIG_SYS_MMC_IMG_LOAD_PART	1
@@ -70,7 +88,6 @@
 	"initrd_high=0xffffffff\0" \
 	"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
 	"videomode=video=ctfb:x:800,y:480,depth:24,mode:0,pclk:30000,le:46,ri:210,up:22,lo:23,hs:20,vs:10,sync:0,vmode:0\0" \
-	BOOTMENU_ENV \
 	"fdt_addr=0x83000000\0" \
 	"fdt_addr_r=0x83000000\0" \
 	"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
@@ -90,7 +107,22 @@
 		"name=rootfs,size=0,uuid=${uuid_gpt_rootfs}\0" \
 	"fastboot_partition_alias_system=rootfs\0" \
 	"setup_emmc=mmc dev 0; gpt write mmc 0 $partitions; reset;\0" \
-	BOOTENV
+	PICO_BOOT_ENV
+
+#if defined(CONFIG_FIT)
+#define CONFIG_BOOTCOMMAND \
+	"mmc dev ${mmcdev};" \
+	"mmc dev ${mmcdev}; if mmc rescan; then " \
+		"if run loadbootscript; then " \
+			"iminfo ${bootscriptaddr};" \
+			"if test $? -eq 1; then hab_failsafe; fi;" \
+			"run bootscript; " \
+		"else " \
+			"echo Fail to load fitImage with boot script;" \
+			"hab_failsafe;" \
+		"fi; " \
+	"fi"
+#endif
 
 #define BOOT_TARGET_DEVICES(func) \
 	func(MMC, mmc, 0) \
-- 
2.7.4



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