From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Mon, 22 Feb 2016 12:14:46 +0100 Subject: [Buildroot] [PATCH 7/9] boards: stm32f469-disco: Add kernel patch to set RAM address to 0 In-Reply-To: <1455901745-18486-8-git-send-email-lee.jones@linaro.org> References: <1455901745-18486-1-git-send-email-lee.jones@linaro.org> <1455901745-18486-8-git-send-email-lee.jones@linaro.org> Message-ID: <20160222121446.2e0e142e@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Lee, On Fri, 19 Feb 2016 17:09:03 +0000, Lee Jones wrote: > At the time of submission, the Mainline kernel does not currently > support the STM32f469. This patch makes changes to the defconfig > to enable booting with the CPIO which Buildroot puts together. > > Signed-off-by: Lee Jones > --- > .../patches/kernel/0004-enable-cpio-rootfs.patch | 26 ++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > create mode 100644 board/stmicroelectronics/stm32/stm32f469-disco/patches/kernel/0004-enable-cpio-rootfs.patch > > diff --git a/board/stmicroelectronics/stm32/stm32f469-disco/patches/kernel/0004-enable-cpio-rootfs.patch b/board/stmicroelectronics/stm32/stm32f469-disco/patches/kernel/0004-enable-cpio-rootfs.patch > new file mode 100644 > index 0000000..28a1b81 > --- /dev/null > +++ b/board/stmicroelectronics/stm32/stm32f469-disco/patches/kernel/0004-enable-cpio-rootfs.patch > @@ -0,0 +1,26 @@ > +From 025cf91280af68d2e7f527e46dce072713fa79ac Mon Sep 17 00:00:00 2001 > +From: Lee Jones > +Date: Thu, 18 Feb 2016 11:07:25 +0000 > +Subject: [PATCH 1/1] ARM: stm32: Add support for booting with a CPIO rootfs > + > +Signed-off-by: Lee Jones > +--- > + arch/arm/configs/stm32_defconfig | 5 +++++ > + 1 file changed, 5 insertions(+) > + > +diff --git a/arch/arm/configs/stm32_defconfig b/arch/arm/configs/stm32_defconfig > +index 4725fab..eaac94c 100644 > +--- a/arch/arm/configs/stm32_defconfig > ++++ b/arch/arm/configs/stm32_defconfig > +@@ -68,3 +68,8 @@ CONFIG_MAGIC_SYSRQ=y > + # CONFIG_FTRACE is not set > + CONFIG_CRC_ITU_T=y > + CONFIG_CRC7=y > ++CONFIG_INITRAMFS_ROOT_UID=0 > ++CONFIG_INITRAMFS_ROOT_GID=0 > ++CONFIG_INITRAMFS_SOURCE="${BR_BINARIES_DIR}/rootfs.cpio" > ++CONFIG_RD_GZIP=y > ++CONFIG_INITRAMFS_COMPRESSION_GZIP=y This is not needed. Buildroot already sets those options when building a kernel with BR2_TARGET_ROOTFS_INITRAMFS=y in the Buildroot configuration. See linux/linux.mk, and search for BR2_TARGET_ROOTFS_INITRAMFS. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com