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package/rpi-firmware: install DTB blobs

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Add an option to install all the DTBs:
  - standard DTBs for standalon A/B and A+/B+ models;
  - overlay DTBs for the 'hats' addon boards.

Install the DTBs as per the traditional layout expected by all RPi
users, that is:
  - base DTBs alongside the other boot files;
  - overlay DTBs in a sub-directory.

This requires the user provide a specially configured Linux defconfig
file, as the default ones do not enable USE_OF.

[Thomas: adjust comment explaining why we use a different version when
installing the DTBs is selected.]

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2015-01-09 23:46:20 +01:00 committed by Thomas Petazzoni
parent 7a6cf0485c
commit 958c224c56
2 changed files with 27 additions and 0 deletions
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11
package/rpi-firmware/Config.in
View file

@ -45,4 +45,15 @@ config BR2_PACKAGE_RPI_FIRMWARE_BOOT
default "_x" if BR2_PACKAGE_RPI_FIRMWARE_X
default "_cd" if BR2_PACKAGE_RPI_FIRMWARE_CD
config BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTBS
bool "Install Device Tree Blobs (DTBs)"
help
Say 'y' here if you want to boot your kernel that has support
for the device tree.
Note that the defconfig files in the Raspberry Pi fork of the
Linux kernel do not enable support for the Device Tree. You'll
have to provide your own Linux config or defconfig file with
device tree enabled, to make use of those DTBs.
endif # BR2_PACKAGE_RPI_FIRMWARE

16
package/rpi-firmware/rpi-firmware.mk
View file

@ -11,12 +11,28 @@ RPI_FIRMWARE_LICENSE_FILES = boot/LICENCE.broadcom
RPI_FIRMWARE_INSTALL_TARGET = NO
RPI_FIRMWARE_INSTALL_IMAGES = YES
ifeq ($(BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTBS),y)
RPI_FIRMWARE_DEPENDENCIES += host-rpi-firmware
# The Device Tree blobs are not yet in the master branch of the
# raspberrypi firmware project, so we have to use a separate branch
# for now.
RPI_FIRMWARE_VERSION = 09627457b9e15bf4ea4e6751d3c173a3fb65df07
define RPI_FIRMWARE_INSTALL_DTB
$(INSTALL) -D -m 0644 $(@D)/boot/bcm2708-rpi-b.dtb $(BINARIES_DIR)/rpi-firmware/bcm2708-rpi-b.dtb
$(INSTALL) -D -m 0644 $(@D)/boot/bcm2708-rpi-b-plus.dtb $(BINARIES_DIR)/rpi-firmware/bcm2708-rpi-b-plus.dtb
for ovldtb in $(@D)/boot/overlays/*.dtb; do \
$(INSTALL) -D -m 0644 $${ovldtb} $(BINARIES_DIR)/rpi-firmware/overlays/$${ovldtb##*/} || exit 1; \
done
endef
endif
define RPI_FIRMWARE_INSTALL_IMAGES_CMDS
$(INSTALL) -D -m 0644 $(@D)/boot/bootcode.bin $(BINARIES_DIR)/rpi-firmware/bootcode.bin
$(INSTALL) -D -m 0644 $(@D)/boot/start$(BR2_PACKAGE_RPI_FIRMWARE_BOOT).elf $(BINARIES_DIR)/rpi-firmware/start.elf
$(INSTALL) -D -m 0644 $(@D)/boot/fixup$(BR2_PACKAGE_RPI_FIRMWARE_BOOT).dat $(BINARIES_DIR)/rpi-firmware/fixup.dat
$(INSTALL) -D -m 0644 package/rpi-firmware/config.txt $(BINARIES_DIR)/rpi-firmware/config.txt
$(INSTALL) -D -m 0644 package/rpi-firmware/cmdline.txt $(BINARIES_DIR)/rpi-firmware/cmdline.txt
$(RPI_FIRMWARE_INSTALL_DTB)
endef
# We have no host sources to get, since we already