[Buildroot] [PATCH v3] configs: add defconfig for TS-7680

* [Buildroot] [PATCH v3] configs: add defconfig for TS-7680
@ 2017-08-24 21:07 Julien Grossholtz
  2017-08-24 21:18 ` Thomas Petazzoni
  0 siblings, 1 reply; 3+ messages in thread
From: Julien Grossholtz @ 2017-08-24 21:07 UTC (permalink / raw)
  To: buildroot

The TS-7680 is an i.MX286 ARM ARM926EJ-S board with 10/100 Ethernet,
USB port, eMMC and CAN ports.

The TS-7680 uses a 3.14.28 Linux kernel provided by Technologic Systems:
https://github.com/embeddedarm/linux-3.14.28-imx28

U-Boot is not provided as the manufacturer recommends not to update the
built-in bootloader.

For more informations please see:
https://wiki.embeddedarm.com/wiki/TS-7680

Signed-off-by: Julien Grossholtz <julien.grossholtz@savoirfairelinux.com>
---
Changes v2 -> v3
   - Update Technologic Systems kernel to the latest commit that includes
   gcc5.x patches (suggested by Thomas Petazzoni)
   - Remove those patches from the commit (suggested by Thomas Petazzoni)
   - Use support/scripts/genimage.sh instead of custom post-build script
   and update readme.txt accordingly. (suggested by Thomas Petazzoni)
   - Remove glibc selection from defconfig to let Buildroot build default
   libc. (suggested by Thomas Petazzoni)

Changes v1 -> v2:
   - Fix Linux v3.14 build for gcc version > gcc5.x by applying upstream
   patches (Suggested by Baruch Siach)

 board/technologic/ts7680/genimage.cfg | 14 ++++++++++
 board/technologic/ts7680/readme.txt   | 51 +++++++++++++++++++++++++++++++++++
 configs/ts7680_defconfig              | 19 +++++++++++++
 3 files changed, 84 insertions(+)
 create mode 100644 board/technologic/ts7680/genimage.cfg
 create mode 100644 board/technologic/ts7680/readme.txt
 create mode 100644 configs/ts7680_defconfig

diff --git a/board/technologic/ts7680/genimage.cfg b/board/technologic/ts7680/genimage.cfg
new file mode 100644
index 0000000..b559982
--- /dev/null
+++ b/board/technologic/ts7680/genimage.cfg
@@ -0,0 +1,14 @@
+image sdcard.img {
+	hdimage {
+	}
+
+	partition unused {
+		size =  512B
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+		size = 256M
+	}
+}
diff --git a/board/technologic/ts7680/readme.txt b/board/technologic/ts7680/readme.txt
new file mode 100644
index 0000000..4ddd491
--- /dev/null
+++ b/board/technologic/ts7680/readme.txt
@@ -0,0 +1,51 @@
+Technologic Systems TS-7680 SBC
+===============================
+
+This document explains how to set up a basic Buildroot system for
+the Technologic Systems TS-7680 Single Board Computer.
+
+The TS-7680 SBC is based on the Freescale i.MX286 ARM ARM926EJ-S
+running at 454MHz. The TS-7680 features are 10/100 Ethernet ports,
+Wi-Fi, microSD card, eMMC, NOR Flash, USB host port, CAN ports,
+relays and ADC/DAC. More details on the board here:
+https://wiki.embeddedarm.com/wiki/TS-7680
+
+The TS-7680 uses a 3.14.28 Linux kernel provided by
+Technologic Systems.
+
+To build the default configuration you only have to run:
+
+  $ make ts7680_defconfig
+  $ make
+
+The output looks like:
+output/images
+??? imx28-ts7680.dtb
+??? rootfs.ext2
+??? rootfs.ext4 -> rootfs.ext2
+??? rootfs.tar
+??? sdcard.img
+??? uImage
+
+The provided genimage configuration generates an image file containing
+two partitions. The first one is unused, but mandatory as the
+TS-7680 built-in bootloader loads the Linux uImage from the /boot
+directory in the second partition. The second partition contains the
+rootfs with the Linux uImage into the /boot directory.
+
+  $ fdisk output/images/sdcard.img
+  output/images/sdcard.img1          1      1       1  512B  0 Empty
+  output/images/sdcard.img2          2 524289  524288  256M 83 Linux
+
+This image can be directly written to an SD card.
+
+    $ sudo dd if=output/images/sdcard.img of=/dev/mmcblk0
+
+To boot with Buildroot, insert this SD card on the board, make sure
+the SD jumper is present and the U-Boot jumper is not.
+
+The bootloader comes pre-flashed on the board on an SPI flash. Since
+updating the bootloader is risky and not trivial, it is not included
+in the Buildroot defconfig. Refer to
+https://wiki.embeddedarm.com/wiki/TS-7680#U-Boot for details on
+which U-Boot config to use and how to flash it.
diff --git a/configs/ts7680_defconfig b/configs/ts7680_defconfig
new file mode 100644
index 0000000..c4310fe
--- /dev/null
+++ b/configs/ts7680_defconfig
@@ -0,0 +1,19 @@
+BR2_arm=y
+BR2_KERNEL_HEADERS_VERSION=y
+BR2_DEFAULT_KERNEL_VERSION="3.14.28"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_14=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/technologic/ts7680/genimage.cfg"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_GIT=y
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/embeddedarm/linux-3.14.28-imx28.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="ff01621df09b97d9fd546d1b49f4013060142892"
+BR2_LINUX_KERNEL_DEFCONFIG="ts76xx"
+BR2_LINUX_KERNEL_UIMAGE=y
+BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x40008000"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx28-ts7680"
+BR2_LINUX_KERNEL_INSTALL_TARGET=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_PACKAGE_HOST_GENIMAGE=y
-- 
2.9.4

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