board/czechlight/clearfog/patches/u-boot/0003-clearfog-hard-code-the-RAUC-redundant-boot-to-uboot-.patch

From 9b36966ce24325309993e74df86ec60fe9976964 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Kundr=C3=A1t?= <jan.kundrat@cesnet.cz>
Date: Wed, 11 Oct 2017 11:51:14 +0200
Subject: [PATCH 3/5] clearfog: hard-code the RAUC redundant boot to uboot's
 config

...so that we can save one partition and an extra detour via a boot.scr
in there.

The "|| reset" are required because the watchdog timer is left running
*and* being periodically reset from within the uboot's prompt, which
completely defeats the point of our logic.
---
 include/configs/clearfog.h | 39 +++++++++++++++++++++++++++++++++++----
 1 file changed, 35 insertions(+), 4 deletions(-)

diff --git a/include/configs/clearfog.h b/include/configs/clearfog.h
index 8f87eca771..bd2cc3c26e 100644
--- a/include/configs/clearfog.h
+++ b/include/configs/clearfog.h
@@ -174,14 +174,45 @@
 	"scriptaddr=" SCRIPT_ADDR_R "\0" \
 	"pxefile_addr_r=" PXEFILE_ADDR_R "\0"
 
-#include <config_distro_bootcmd.h>
-
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	RELOCATION_LIMITS_ENV_SETTINGS \
 	LOAD_ADDRESS_ENV_SETTINGS \
-	"fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
 	"console=ttyS0,115200\0" \
-	BOOTENV
+	"bootcmd=test -n \"${BOOT_A_LEFT}\" || setenv BOOT_A_LEFT 3;" \
+	"test -n \"${BOOT_B_LEFT}\" || setenv BOOT_B_LEFT 3;" \
+	"setenv rauc_part;" \
+	"for BOOT_SLOT in \"A B\"; do" \
+	"  if test \"x${rauc_part}\" != \"x\"; then" \
+	"    ;" \
+	"  elif test \"x${BOOT_SLOT}\" = \"xA\"; then" \
+	"    if test ${BOOT_A_LEFT} -gt 0; then" \
+	"      setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1;" \
+	"      echo \"Found valid slot A, ${BOOT_A_LEFT} attempts remaining\";" \
+	"      setenv rauc_part 1;" \
+	"      setenv rauc_slot A;" \
+	"    fi;" \
+	"  elif test \"x${BOOT_SLOT}\" = \"xB\"; then" \
+	"    if test ${BOOT_B_LEFT} -gt 0; then" \
+	"      setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1;" \
+	"      echo \"Found valid slot B, ${BOOT_B_LEFT} attempts remaining\";" \
+	"      setenv rauc_part 2;" \
+	"      setenv rauc_slot B;" \
+	"    fi;" \
+	"  fi;" \
+	"done;" \
+	"if test -n \"${rauc_part}\"; then" \
+	"  saveenv ;" \
+	"else" \
+	"  echo \"No valid slot found, resetting tries to 3\";" \
+	"  setenv BOOT_A_LEFT 3;" \
+	"  setenv BOOT_B_LEFT 3;" \
+	"  saveenv;" \
+	"  reset;" \
+	"fi;" \
+	"setenv bootargs root=/dev/mmcblk0p${rauc_part} rauc.slot=${rauc_slot} czechlight=${czechlight};" \
+	"load mmc 0:${rauc_part} ${fdt_addr_r} /boot/armada-388-clearfog-base.dtb || reset;" \
+	"load mmc 0:${rauc_part} ${kernel_addr_r} /boot/zImage || reset;" \
+	"bootz ${kernel_addr_r} - ${fdt_addr_r} || reset\0"
 
 #endif /* CONFIG_SPL_BUILD */
 
-- 
2.14.1