[Buildroot] [PATCHv3] package/rpi-firmware: add option to install vcdbg
Yann E. MORIN
yann.morin.1998 at free.fr
Wed Jul 1 17:40:28 UTC 2015
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 at free.fr>
Cc; Floris Bos <bos at je-eigen-domein.nl>
Cc: Pascal de Bruijn <pmjdebruijn at pcode.nl>
Cc: Baruch Siach <baruch at tkos.co.il>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
Changes v2 -> v3;
- depends on an (eg)libc toolchain (Baruch)
- fix typo (Baruch)
Changes v1 -> v2:
- select rpi-userland (Baruch, Thomas)
---
package/rpi-firmware/Config.in | 11 +++++++++++
package/rpi-firmware/rpi-firmware.mk | 7 +++++++
2 files changed, 18 insertions(+)
diff --git a/package/rpi-firmware/Config.in b/package/rpi-firmware/Config.in
index a060b4e..405674f 100644
--- a/package/rpi-firmware/Config.in
+++ b/package/rpi-firmware/Config.in
@@ -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
diff --git a/package/rpi-firmware/rpi-firmware.mk b/package/rpi-firmware/rpi-firmware.mk
index 56d6925..6299b04 100644
--- a/package/rpi-firmware/rpi-firmware.mk
+++ b/package/rpi-firmware/rpi-firmware.mk
@@ -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 # INSTRALL_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
--
1.9.1
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