From a1513f28391888c1d9feee4acbe2337b233f7a2e Mon Sep 17 00:00:00 2001
From: Jun Nie <jun.nie@linaro.org>
Date: Wed, 8 May 2019 14:38:33 +0800
Subject: [PATCH] pico-imx7d: Add boot option for verified boot

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@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 365a598..9a3b3b1 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_SYS_MMC_IMG_LOAD_PART	1
 
@@ -69,7 +87,6 @@
 	"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" \
@@ -89,7 +106,22 @@
 		"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