initial buildroot for linux 5.15

package/mender-grubenv/Config.in

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+config BR2_PACKAGE_MENDER_GRUBENV
+	bool "mender-grubenv"
+	depends on BR2_TARGET_GRUB2_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_MENDER # runtime
+	depends on BR2_TARGET_GRUB2
+	depends on !(BR2_TARGET_GRUB2_HAS_LEGACY_BOOT && BR2_TARGET_GRUB2_HAS_EFI_BOOT)
+	help
+	  Contains the boot scripts and tools used by Mender to
+	  integrate with the GRUB bootloader.
+
+	  The following Grub modules must be selected for this package:
+	  loadenv hashsum echo halt gcry_sha256 test regexp
+
+	  https://github.com/mendersoftware/grub-mender-grubenv
+
+if BR2_PACKAGE_MENDER_GRUBENV
+
+config BR2_PACKAGE_MENDER_GRUBENV_DEFINES
+	string "path to grubenv defines"
+	help
+	  Specify a path to the mender grubenv defines file.
+	  If no path is specified, the example file in the source
+	  directory will be used.
+
+	  The example file in the source directory sets the following:
+	  mender_rootfsa_part=2
+	  mender_rootfsb_part=3
+	  mender_kernel_root_base=/dev/mmcblk0p
+	  mender_grub_storage_device=hd0
+	  kernel_imagetype=bzImage
+
+endif
+
+comment "mender-grubenv needs a grub2 bootloader"
+	depends on BR2_TARGET_GRUB2_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_MENDER
+	depends on !BR2_TARGET_GRUB2
+
+comment "mender-grubenv does not support both legacy and EFI grub2 bootloaders at the same time"
+	depends on BR2_PACKAGE_MENDER
+	depends on BR2_TARGET_GRUB2_HAS_LEGACY_BOOT && BR2_TARGET_GRUB2_HAS_EFI_BOOT

package/mender-grubenv/mender-grubenv.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256 00a574d2bed8d54ba6739700da789a420a02de900df56dd2cfbe0df460a98dca mender-grubenv-1a7db967495bbe8be53b7a69dcb42822f39d9a74.tar.gz
+sha256 b4acfcfa2a0ba1a8c82ec3965fbcee886cff8394ca4214e0ddac0a36beb1e05a LICENSE

package/mender-grubenv/mender-grubenv.mk

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+################################################################################
+#
+# mender-grubenv
+#
+################################################################################
+
+MENDER_GRUBENV_VERSION = 1a7db967495bbe8be53b7a69dcb42822f39d9a74
+MENDER_GRUBENV_SITE = $(call github,mendersoftware,grub-mender-grubenv,$(MENDER_GRUBENV_VERSION))
+MENDER_GRUBENV_LICENSE = Apache-2.0
+MENDER_GRUBENV_LICENSE_FILES = LICENSE
+# Grub2 must be built first so this package can overwrite the config files
+# provided by grub.
+MENDER_GRUBENV_DEPENDENCIES = grub2
+MENDER_GRUBENV_INSTALL_IMAGES = YES
+
+MENDER_GRUBENV_MAKE_ENV = \
+	$(TARGET_CONFIGURE_OPTS) \
+	$(TARGET_MAKE_ENV)
+
+MENDER_GRUBENV_DEFINES = \
+	$(or $(call qstrip,$(BR2_PACKAGE_MENDER_GRUBENV_DEFINES)),\
+		$(@D)/mender_grubenv_defines.example)
+
+# These grub modules must be built in for the grub scripts to work properly.
+# Without them, the system will not boot.
+MENDER_GRUBENV_MANDATORY_MODULES = loadenv hashsum echo halt gcry_sha256 test regexp
+
+ifeq ($(BR2_TARGET_GRUB2_HAS_LEGACY_BOOT),y)
+MENDER_GRUBENV_MODULES_MISSING_PC = \
+	$(filter-out $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_MODULES_PC)),\
+		$(MENDER_GRUBENV_MANDATORY_MODULES))
+
+MENDER_GRUBENV_MAKE_ENV += ENV_DIR=/boot/grub
+
+define MENDER_GRUBENV_INSTALL_I386_CFG
+	mkdir -p $(BINARIES_DIR)/boot-part/grub
+	cp -dpfr $(TARGET_DIR)/boot/grub/grub.cfg \
+		$(TARGET_DIR)/boot/grub/mender_grubenv* \
+		$(BINARIES_DIR)/boot-part/grub
+endef
+endif # BR2_TARGET_GRUB2_HAS_LEGACY_BOOT
+
+ifeq ($(BR2_TARGET_GRUB2_HAS_EFI_BOOT),y)
+MENDER_GRUBENV_MODULES_MISSING_EFI = \
+	$(filter-out $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI)),\
+		$(MENDER_GRUBENV_MANDATORY_MODULES))
+
+MENDER_GRUBENV_MAKE_ENV += ENV_DIR=/boot/EFI/BOOT
+
+define MENDER_GRUBENV_INSTALL_EFI_CFG
+	mkdir -p $(BINARIES_DIR)/efi-part/EFI/BOOT
+	cp -dpfr $(TARGET_DIR)/boot/EFI/BOOT/grub.cfg \
+		$(TARGET_DIR)/boot/EFI/BOOT/mender_grubenv* \
+		$(BINARIES_DIR)/efi-part/EFI/BOOT
+endef
+endif # BR2_TARGET_GRUB2_HAS_EFI_BOOT
+
+ifeq ($(BR2_PACKAGE_MENDER_GRUBENV)$(BR_BUILDING),yy)
+ifneq ($(MENDER_GRUBENV_MODULES_MISSING_EFI),)
+$(error The following missing grub2 efi modules must be enabled for mender-grubenv \
+	to work: $(MENDER_GRUBENV_MODULES_MISSING_EFI))
+endif
+ifneq ($(MENDER_GRUBENV_MODULES_MISSING_PC),)
+$(error The following missing grub2 pc modules must be enabled for mender-grubenv \
+	to work: $(MENDER_GRUBENV_MODULES_MISSING_PC))
+endif
+endif
+
+define MENDER_GRUBENV_CONFIGURE_CMDS
+	$(INSTALL) -m 0644 $(MENDER_GRUBENV_DEFINES) $(@D)/mender_grubenv_defines
+endef
+
+define MENDER_GRUBENV_BUILD_CMDS
+	$(MENDER_GRUBENV_MAKE_ENV) $(MAKE) -C $(@D)
+endef
+
+define MENDER_GRUBENV_INSTALL_TARGET_CMDS
+	$(MENDER_GRUBENV_MAKE_ENV) $(MAKE) DESTDIR=$(TARGET_DIR) -C $(@D) install
+endef
+
+define MENDER_GRUBENV_INSTALL_IMAGES_CMDS
+	$(MENDER_GRUBENV_INSTALL_I386_CFG)
+	$(MENDER_GRUBENV_INSTALL_EFI_CFG)
+endef
+
+$(eval $(generic-package))