add support for EEPROM update

br-external/Config.in

@@ -4,3 +4,5 @@ source "$BR2_EXTERNAL_BR2RAUC_PATH/package/librespot/Config.in"
 source "$BR2_EXTERNAL_BR2RAUC_PATH/package/pp3-api/Config.in"
 source "$BR2_EXTERNAL_BR2RAUC_PATH/package/pp3-core/Config.in"
 source "$BR2_EXTERNAL_BR2RAUC_PATH/package/pp3-web-ui/Config.in"
+source "$BR2_EXTERNAL_BR2RAUC_PATH/package/rpi-eeprom/Config.in"
+source "$BR2_EXTERNAL_BR2RAUC_PATH/package/rpi-utils/Config.in"

br-external/package/rpi-eeprom/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_RPI_EEPROM
+	bool "rpi-eeprom"
+	help
+	  Raspberry Pi bootloader tools.
+
+	  https://github.com/raspberrypi/rpi-eeprom

br-external/package/rpi-eeprom/README.md

@@ -0,0 +1,16 @@
+from https://lore.kernel.org/buildroot/20241230000816.34cc40be@windsurf/T/#u
+(should soon be part of buildroot release)
+
+sudo mount /dev/mmcblk0p1 /boot
+sudo EDITOR=vi rpi-eeprom-config -e
+
+```
+[all]
+BOOT_UART=0
+WAKE_ON_GPIO=1
+POWER_OFF_ON_HALT=0
+```
+
+NOTE: POWER_OFF_ON_HALT=1 only makes sense if WAKE_ON_GPIO=0, c.f. https://www.raspberrypi.com/documentation/computers/raspberry-pi.html
+
+=> so for now we have no reason to change the firmware params (or the firmware itself for that matter)

br-external/package/rpi-eeprom/rpi-eeprom.mk

@@ -0,0 +1,29 @@
+################################################################################
+#
+# rpi-eeprom
+#
+################################################################################
+
+RPI_EEPROM_VERSION = v2025.01.22-2712
+RPI_EEPROM_SITE = $(call github,raspberrypi,rpi-eeprom,$(RPI_EEPROM_VERSION))
+RPI_EEPROM_LICENSE = BSD-3-Clause
+RPI_EEPROM_LICENSE_FILES = LICENSE
+
+RPI_EEPROM_INSTALL = YES
+
+# TODO: use latest firmware from that commit (check changelog)
+# NOTE: current on my Rpi is 2023/01/11
+# TODO: modify rpi-eeprom-update so that the correct boot partition is mounted (the one that is modified is the one that is loaded by uboot)
+#       (or simply move the resulting files from /boot to the correct /mnt)
+# TODO: automate the update of the EEPROM config
+
+
+define RPI_EEPROM_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0755 $(@D)/rpi-eeprom-config $(TARGET_DIR)/bin/rpi-eeprom-config
+	$(INSTALL) -D -m 0755 $(@D)/rpi-eeprom-digest $(TARGET_DIR)/bin/rpi-eeprom-digest
+	$(INSTALL) -D -m 0755 $(@D)/rpi-eeprom-update $(TARGET_DIR)/bin/rpi-eeprom-update
+	$(INSTALL) -D -m 0644 $(@D)/firmware-2711/default/pieeprom-2023-01-11.bin $(TARGET_DIR)/bin/firmware/default/pieeprom-2023-01-11.bin
+	$(INSTALL) -D -m 0644 $(@D)/firmware-2711/default/recovery.bin $(TARGET_DIR)/bin/firmware/default/recovery.bin
+endef
+
+$(eval $(generic-package))

br-external/package/rpi-utils/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_RPI_UTILS
+	bool "rpi-utils"
+	help
+	  A collection of scripts and simple applications for Raspberry Pi.
+
+	  https://github.com/raspberrypi/utils

br-external/package/rpi-utils/rpi-utils.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# rpi-utils
+#
+################################################################################
+
+RPI_UTILS_VERSION = 33aa4da93d8da90d5075e8cd48e72cc90048b9f3
+RPI_UTILS_SITE = $(call github,raspberrypi,utils,$(RPI_UTILS_VERSION))
+RPI_UTILS_LICENSE = BSD-3-Clause
+RPI_UTILS_LICENSE_FILES = LICENSE
+
+$(eval $(cmake-package))