[Buildroot] [PATCH v4] board: Add support for Engicam i.CoreM6 Quad/Dual boards

[Buildroot] [PATCH v4] board: Add support for Engicam i.CoreM6 Quad/Dual boards

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

Add initial support for Engicam i.CoreM6 Quad/Dual board
with below features:
- U-Boot 2017.05
- Linux 4.11
- Default packages from buildroot

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Rebase master
- Used support/scripts/genimage.sh
- Dropped common and used board/engicam
- Update http board link.
- Update genimage.cfg
- Update readme.txt
- Add BR2_TARGET_GENERIC_ISSUE
Changes for v3:
- Rename icore with common, since creating a folder with the name of
  SOM is not make sense, becuase the defconfig is the only change.
- Update readme.txt, post-images.sh, engicam_imx6q_icore_defconfig as per
  above change.
- rebased on master
Changes for v2:
- Created icorem6 family board on engicam
- Added Quad/Dual SOM boards support
- Created well defined readme.tx with referance to board/freescale/imx6q-sabresd/
- s/imx6q_icore_defconfig/engicam_/imx6q_icore_defconfig
- Updated DEVELOPERS file
- Created genimage.cfg with added SPL and u-boot-dtb.img partitions
- Removed Latest source configs and updated with fixed version source for U-Boot, Linux
- Add board link on readme.txt
- Removed BR2_TARGET_ROOTFS_TAR_XZ=y
- Created post-image.sh with referance to board/freescale/imx6q-sabresd/

 DEVELOPERS                            |  4 +++
 board/engicam/genimage.cfg            | 38 ++++++++++++++++++++
 board/engicam/readme.txt              | 66 +++++++++++++++++++++++++++++++++++
 configs/engicam_imx6q_icore_defconfig | 38 ++++++++++++++++++++
 4 files changed, 146 insertions(+)
 create mode 100644 board/engicam/genimage.cfg
 create mode 100644 board/engicam/readme.txt
 create mode 100644 configs/engicam_imx6q_icore_defconfig

diff --git a/DEVELOPERS b/DEVELOPERS
index 7d8b410..8939987 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -827,6 +827,10 @@ F:	package/angularjs/
 N:	Ilias Apalodimas <apalos@gmail.com>
 F:	package/keepalived/
 
+N:	Jagan Teki <jagan@amarulasolutions.com>
+F:	board/engicam/
+F:	configs/engicam_imx6q_icore_defconfig
+
 N:	James Knight <james.knight@rockwellcollins.com>
 F:	package/atkmm/
 F:	package/cairomm/
diff --git a/board/engicam/genimage.cfg b/board/engicam/genimage.cfg
new file mode 100644
index 0000000..43c81cf
--- /dev/null
+++ b/board/engicam/genimage.cfg
@@ -0,0 +1,38 @@
+image boot.vfat {
+	vfat {
+		files = {
+			"uImage",
+			"imx6q-icore.dtb"
+		}
+	}
+	size = 16M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+
+	partition SPL {
+		in-partition-table = "no"
+		image = "SPL"
+		offset = 1024
+	}
+
+	partition u-boot-dtb {
+		in-partition-table = "no"
+		image = "u-boot-dtb.img"
+		offset = 69K
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+		offset = 8M
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext2"
+	}
+}
diff --git a/board/engicam/readme.txt b/board/engicam/readme.txt
new file mode 100644
index 0000000..eb7503f
--- /dev/null
+++ b/board/engicam/readme.txt
@@ -0,0 +1,66 @@
+*****************************************
+Buildroot for Engicam i.MX6 SOM platforms:
+*****************************************
+
+This file documents the Buildroot support for all Engicam i.MX6 SOM
+platform boards.
+
+i.CoreM6 Quad/Dual SOM Starter kits:
+https://www.engicam.com/vis-prod/101120
+
+This configuration uses U-Boot mainline and kernel mainline.
+
+Build
+=====
+
+First, configure Buildroot for the Engicam i.MX SOM's:
+
+- for i.CoreM6 Quad/Dual:
+
+  make engicam_imx6q_icore_defconfig
+
+Build all components:
+
+  make
+
+You will find the following files in output/images/:
+- for i.CoreM6 Quad/Dual:
+  - imx6q-icore.dtb
+  - rootfs.ext4
+  - rootfs.tar
+  - sdcard.img
+  - SPL
+  - u-boot-dtb.img
+  - uImage
+
+Create a bootable SD card
+=========================
+
+To determine the device associated to the SD card have a look in the
+/proc/partitions file:
+
+  cat /proc/partitions
+
+Buildroot prepares a bootable "sdcard.img" image in the output/images/
+directory, ready to be dumped on a SD card. Launch the following
+command as root:
+
+  dd if=output/images/sdcard.img of=/dev/<your-sd-device>
+
+*** WARNING! This will destroy all the card content. Use with care! ***
+
+For details about the medium image layout, see the definition in
+board/engicam/genimage.cfg
+
+Boot the i.CoreM6 boards with SD boot:
+=====================================
+
+To boot your newly created system:
+- insert the SD card in the SD slot of the board;
+- connect 3-wire RS232 serial port J28 on board, and connect with other
+  serial end or USB cable(if serial-to-usb converter used) using
+  a terminal emulator at 115200 bps, 8n1;
+- close JM3 for sd boot.
+- power on the board.
+
+Enjoy!
diff --git a/configs/engicam_imx6q_icore_defconfig b/configs/engicam_imx6q_icore_defconfig
new file mode 100644
index 0000000..2412f19
--- /dev/null
+++ b/configs/engicam_imx6q_icore_defconfig
@@ -0,0 +1,38 @@
+BR2_arm=y
+BR2_cortex_a9=y
+BR2_ARM_ENABLE_NEON=y
+BR2_ARM_ENABLE_VFP=y
+BR2_ARM_FPU_VFPV3=y
+
+# System
+BR2_TARGET_GENERIC_GETTY_PORT="ttymxc3"
+
+# Bootloader
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.05"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="imx6q_icore_mmc"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
+BR2_TARGET_UBOOT_FORMAT_DTB_IMG=y
+BR2_TARGET_UBOOT_SPL=y
+BR2_TARGET_UBOOT_SPL_NAME="SPL"
+
+# Kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.11"
+BR2_LINUX_KERNEL_DEFCONFIG="imx_v6_v7"
+BR2_LINUX_KERNEL_UIMAGE=y
+BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x10008000"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx6q-icore"
+
+# Filesystem
+BR2_TARGET_GENERIC_ISSUE="Welcome to Engicam i.CoreM6 Quad/Dual Starter Kit"
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/engicam/genimage.cfg"
-- 
2.7.4

[Buildroot] [PATCH v4] board: Add support for Engicam i.CoreM6 Quad/Dual boards

[Thomas Petazzoni]

Hello,

On Mon, 12 Jun 2017 23:51:41 +0530, Jagan Teki wrote:

> diff --git a/configs/engicam_imx6q_icore_defconfig b/configs/engicam_imx6q_icore_defconfig
> new file mode 100644
> index 0000000..2412f19
> --- /dev/null
> +++ b/configs/engicam_imx6q_icore_defconfig
> @@ -0,0 +1,38 @@
> +BR2_arm=y
> +BR2_cortex_a9=y
> +BR2_ARM_ENABLE_NEON=y
> +BR2_ARM_ENABLE_VFP=y
> +BR2_ARM_FPU_VFPV3=y

One thing was missing here:

# Linux headers same as kernel, a 4.11 series
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_11=y

This is necessary, otherwise as soon as we add support for Linux 4.12,
the toolchain would be built with Linux headers 4.12... but your
defconfig would still be using Linux 4.11 as the running kernel.

So in all defconfigs, we explicitly set the version of the kernel
headers being used.

Other than that: applied. Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com