Commit d16b32a4 authored by Yann E. MORIN's avatar Yann E. MORIN Committed by Thomas Petazzoni
Browse files

package/rpi-firmware: add option to install vcdbg 



vcdbg is a tool to help debug the communication with the GPU.
It comes as a binary-only, and in two flavours: one for the hard
floating point ABI, one for the software floating point ABI.

Unfortunately, we have no source code for that tool, only a binary that
was dynamically linked with glibc and libraries from rpi-userland.

So, just install that executable, and let's hope there is no symbol
issue at runtime.

Note: vcdbg needs glibc, threads and !static. Since glibc already
implies threads and !static, we only need to depend on glibc.

Signed-off-by: default avatar"Yann E. MORIN" <yann.morin.1998@free.fr>
Cc; Floris Bos <bos@je-eigen-domein.nl>
Cc: Pascal de Bruijn <pmjdebruijn@pcode.nl>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
parent 0a035206

package/rpi-firmware/Config.in

+11 −0
Original line number Diff line number Diff line
@@ -65,4 +65,15 @@ config BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTB_OVERLAYS 
	  Say 'y' here if you need to load one or more of the DTB overlays,

	  to support HATs (Hardware Attached on Top, add-on modules).



config BR2_PACKAGE_RPI_FIRMWARE_INSTALL_VCDBG

	bool "vcdbg"

	depends on BR2_TOOLCHAIN_USES_GLIBC

	depends on BR2_INSTALL_LIBSTDCPP # rpi-userland

	select BR2_PACKAGE_RPI_USERLAND

	help

	  Install vcdbg, to help debug communication with the GPU.



comment "vcdbg needs an (e)glibc toolchain w/ C++"

	depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_INSTALL_LIBSTDCPP



endif # BR2_PACKAGE_RPI_FIRMWARE

package/rpi-firmware/rpi-firmware.mk

+7 −0
Original line number Diff line number Diff line
@@ -29,6 +29,13 @@ define RPI_FIRMWARE_INSTALL_DTB_OVERLAYS 
endef

endif



ifeq ($(BR2_PACKAGE_RPI_FIRMWARE_INSTALL_VCDBG),y)

define RPI_FIRMWARE_INSTALL_TARGET_CMDS

	$(INSTALL) -d -m 0700 $(@D)/$(if BR2_ARM_EABIHF,hardfp/)opt/vc/bin/vcdbg \

		$(TARGET_DIR)/usr/sbin/vcdbg

endef

endif # INSTALL_VCDBG



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