[Buildroot] [git commit] configs/warpboard: Generate an sdcard image
Peter Korsgaard
peter at korsgaard.com
Wed Jul 27 13:02:36 UTC 2016
commit: https://git.buildroot.net/buildroot/commit/?id=4dccfcbdd28ae5feaa827851cb19f67e1478c3d8
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
Generate an sdcard.img image to make it easier the deployment of a
Buildroot image.
[Peter: drop unneeded exit statement in post-image script]
Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
board/freescale/warpboard/README | 14 +++++++----
board/freescale/warpboard/genimage.cfg | 41 +++++++++++++++++++++++++++++++++
board/freescale/warpboard/post-image.sh | 14 +++++++++++
configs/warpboard_defconfig | 10 ++++++++
4 files changed, 74 insertions(+), 5 deletions(-)
diff --git a/board/freescale/warpboard/README b/board/freescale/warpboard/README
index 7e6bdc5..871d5cd 100644
--- a/board/freescale/warpboard/README
+++ b/board/freescale/warpboard/README
@@ -9,7 +9,9 @@ Build all components:
You will find in ./output/images/ the following files:
- imx6sl-warp.dtb
+ - rootfs.ext4
- rootfs.tar
+ - sdcard.img
- u-boot.imx
- zImage
@@ -42,14 +44,16 @@ Update uboot
Update linux & rootfs
=====================
-Run the 'ums' command from the U-Boot prompt to mount the eMMC as mass
-storage and update zImage, device tree (imx6sl-warp.dtb) and rootfs
-file (rootfs.tar) :
+Run the 'ums' command from the U-Boot prompt to mount the eMMC as USB mass
+storage:
=> ums 0 mmc 0
-Put the zImage and DTB files in the warp-vfat partition and extract as
-root the rootfs.tar tarball in the warp-rootfs partition.
+And then flash the sdcard.img into the eMMC:
+
+ dd if=output/images/sdcard.img of=/dev/<your-sd-device>
+
+*** WARNING! This will destroy all the eMMC content. Use it with care! ***
Using bluetooth
================
diff --git a/board/freescale/warpboard/genimage.cfg b/board/freescale/warpboard/genimage.cfg
new file mode 100644
index 0000000..a22aa2a
--- /dev/null
+++ b/board/freescale/warpboard/genimage.cfg
@@ -0,0 +1,41 @@
+# Minimal SD card image for the Warp board
+#
+# We mimic the .sdcard Freescale's image format for i.MX6SL:
+# * the microSD card must have 1 kB free space at the beginning,
+# * U-Boot is dumped as is,
+# * a FAT partition at offset 8 MB is containing zImage and dtbs,
+# * a single root filesystem partition is required (Ext4 in this case).
+#
+
+image boot.vfat {
+ vfat {
+ files = {
+ "imx6sl-warp.dtb",
+ "zImage"
+ }
+ }
+ size = 16M
+}
+
+image sdcard.img {
+ hdimage {
+ }
+
+ partition u-boot {
+ in-partition-table = "no"
+ image = "u-boot.imx"
+ offset = 1024
+ }
+
+ partition boot {
+ partition-type = 0xC
+ bootable = "true"
+ image = "boot.vfat"
+ offset = 8M
+ }
+
+ partition rootfs {
+ partition-type = 0x83
+ image = "rootfs.ext4"
+ }
+}
diff --git a/board/freescale/warpboard/post-image.sh b/board/freescale/warpboard/post-image.sh
new file mode 100755
index 0000000..b4ac460
--- /dev/null
+++ b/board/freescale/warpboard/post-image.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
+GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+rm -rf "${GENIMAGE_TMP}"
+
+genimage \
+ --rootpath "${TARGET_DIR}" \
+ --tmppath "${GENIMAGE_TMP}" \
+ --inputpath "${BINARIES_DIR}" \
+ --outputpath "${BINARIES_DIR}" \
+ --config "${GENIMAGE_CFG}"
diff --git a/configs/warpboard_defconfig b/configs/warpboard_defconfig
index 8dfe52e..562dc33 100644
--- a/configs/warpboard_defconfig
+++ b/configs/warpboard_defconfig
@@ -37,3 +37,13 @@ BR2_TARGET_UBOOT_FORMAT_IMX=y
# host utility
BR2_PACKAGE_HOST_DFU_UTIL=y
BR2_PACKAGE_HOST_IMX_USB_LOADER=y
+
+# Filesystem
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/freescale/warpboard/post-image.sh"
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+
+# required tools to create the eMMC image
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
More information about the buildroot
mailing list