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package/rpi-firmware: add option to install vcdbg

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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: "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: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2015-07-01 19:40:28 +02:00 committed by Thomas Petazzoni
parent 0a035206d1
commit d16b32a401
2 changed files with 18 additions and 0 deletions
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11
package/rpi-firmware/Config.in
View File

@ -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

7
package/rpi-firmware/rpi-firmware.mk
View File

@ -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