u-boot-imx: Add resin envvars and checks

Changelog-entry: Add resin envvars and checks
Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/files/0003-add-imx8mm-resin-hooks.patch

@@ -0,0 +1,36 @@
+--- git.org/include/configs/imx8mm_evk.h	2023-11-20 10:23:22.490132843 +0000
++++ git/include/configs/imx8mm_evk.h	2023-11-20 12:34:36.580202049 +0000
+@@ -148,19 +148,21 @@
+ 	"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
+ 	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
+ 	"mmcautodetect=yes\0" \
+-	"mmcargs=setenv bootargs ${jh_clk} console=${console} root=${mmcroot}\0 " \
++	"mmcargs=setenv bootargs ${jh_clk} console=${console} ${resin_kernel_root} ${os_cmdline}\0 " \
+ 	"loadbootscript=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bsp_script};\0" \
+ 	"bootscript=echo Running bootscript from mmc ...; " \
+ 		"source\0" \
+-	"loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
+-	"loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr_r} ${fdtfile}\0" \
++	"loadimage=if load ${resin_dev_type} ${resin_dev_index}:${resin_root_part} ${loadaddr} boot/${image}; then run balena_kernel_load_crc_save; else false; fi;\0" \
++	"loadfdt=if load ${resin_dev_type} ${resin_dev_index}:${resin_root_part} ${fdt_addr} boot/${fdtfile}; then run balena_fdt_load_crc_save; else false; fi;\0" \
+ 	"mmcboot=echo Booting from mmc ...; " \
+ 		"run mmcargs; " \
+ 		"if test ${boot_fit} = yes || test ${boot_fit} = try; then " \
+ 			"bootm ${loadaddr}; " \
+ 		"else " \
+ 			"if run loadfdt; then " \
+-				"booti ${loadaddr} - ${fdt_addr_r}; " \
++                                "run balena_kernel_load_crc_check;" \
++                                "run balena_fdt_load_crc_check;" \
++				"booti ${loadaddr} - ${fdt_addr}; " \
+ 			"else " \
+ 				"echo WARN: Cannot load the DT; " \
+ 			"fi; " \
+@@ -186,6 +188,7 @@
+ 			"fi; " \
+ 		"fi;\0" \
+ 	"bsp_bootcmd=echo Running BSP bootcmd ...; " \
++                "setenv resin_kernel_load_addr ${loadaddr}; run resin_set_kernel_root; run set_os_cmdline; " \
+ 		"mmc dev ${mmcdev}; if mmc rescan; then " \
+ 		   "if run loadbootscript; then " \
+ 			   "run bootscript; " \

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/u-boot-imx_%.bbappend

@@ -8,6 +8,7 @@ SRC_URI:append:imx8mm-lpddr4-evk = " \
     file://0001-nitrogen8mm_env-common-Force-using-default-environment.patch \
     file://0002-fix-return-vaue-propagatin-out-of-environ.patch \
     file://0002-fixup-imx8mm-evk-fdt-addr.patch \
+    file://0003-add-imx8mm-resin-hooks.patch \
     file://balenaos_tweaks-imx.cfg \
     file://increase-early-malloc.cfg \
 "