configs: Add support for warp7 board
Add support for warp7, which is a board based on NXP i.MX7S processor. More information about warp7 can be found at: https://www.element14.com/community/docs/DOC-79058 Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2016.11.x
Fabio Estevam
Thomas Petazzoni
parent
b2216c6bb4
commit
d981c4b34a
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# Minimal eMMC image for the Warp board
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#
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# We mimic the .sdcard Freescale's image format for i.MX7S:
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# * the eMMC card must have 1 kB free space at the beginning,
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# * U-Boot is dumped as is,
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# * a FAT partition at offset 8 MB is containing zImage and dtbs,
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# * a single root filesystem partition is required (Ext4 in this case).
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#
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image boot.vfat {
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vfat {
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files = {
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"imx7s-warp.dtb",
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"zImage"
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}
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}
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size = 16M
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}
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image emmc.img {
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hdimage {
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}
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partition u-boot {
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in-partition-table = "no"
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image = "u-boot.imx"
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offset = 1024
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}
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partition boot {
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partition-type = 0xC
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bootable = "true"
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image = "boot.vfat"
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offset = 8M
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}
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partition rootfs {
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partition-type = 0x83
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image = "rootfs.ext4"
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}
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}
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#!/usr/bin/env bash
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BOARD_DIR="$(dirname $0)"
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GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
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GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
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rm -rf "${GENIMAGE_TMP}"
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genimage \
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--rootpath "${TARGET_DIR}" \
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--tmppath "${GENIMAGE_TMP}" \
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--inputpath "${BINARIES_DIR}" \
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--outputpath "${BINARIES_DIR}" \
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--config "${GENIMAGE_CFG}"
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*****************
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Warp i.MX7S board
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*****************
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This file documents the Buildroot support for the Warp i.MX7S board.
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Build
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=====
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First, configure Buildroot for the Warp i.MX7S board:
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make warp7_defconfig
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Build all components:
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make
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You will find in output/images/ the following files:
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- imx7s-warp.dtb
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- rootfs.ext4
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- rootfs.tar
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- emmc.img
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- u-boot.imx
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- zImage
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Flash the eMMC image
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====================
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In the U-Boot prompt lauch:
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=> ums 0 mmc 0
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This will mount the eMMC content in the host PC as a mass storage device.
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To determine the device associated to the eMMC have a look in the
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/proc/partitions file:
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cat /proc/partitions
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Buildroot prepares a bootable "emmc.img" image in the output/images/
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directory, ready to be dumped into the eMMC. Launch the following
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command:
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sudo dd if=output/images/emmc.img of=/dev/<your-emmc-device>
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*** WARNING! This will destroy all the eMMC content. Use it with care! ***
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For details about the medium image layout, see the definition in
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board/warp7/genimage.cfg.
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How to recover from a bad eMMC image
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====================================
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In case a bad U-Boot has been flashed to the eMMC and the board no
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longer boots, it is possible to recover using the imx_usb_loader utility.
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Put the warp7 board in USB download mode by removing the CPU board
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from the base board then putting switch 2 in the upper position.
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Connect a USB to serial adapter between the host PC and warp7 serial
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USB port, and also a USB cable between the OTG warp7 port and the host
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PC.
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Copy u-boot.imx to the imx_usb_loader folder.
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Load u-boot.imx via USB:
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$ sudo ./imx_usb u-boot.imx
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Then U-Boot should start and its messages will appear in the console program.
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Open a terminal program such as minicom.
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Use the default environment variables:
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=> env default -f -a
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=> saveenv
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=> ums 0 mmc 0
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sudo dd if=output/images/emmc.img of=/dev/<your-emmc-device>
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Put warp7 back in eMMC boot mode by placing switch 2 in the lower position
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and reboot the board.
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Boot the Warp i.MX7S board
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==========================
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To boot your newly created system:
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- put a micro USB cable into the Debug USB Port and connect using a terminal
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emulator at 115200 bps, 8n1;
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- power on the board.
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Enjoy!
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@ -0,0 +1,36 @@
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# architecture
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BR2_arm=y
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BR2_cortex_a7=y
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# Linux headers same as kernel, a 4.1 series
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BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_1=y
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# system
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BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0"
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# Kernel
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BR2_LINUX_KERNEL=y
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BR2_LINUX_KERNEL_CUSTOM_GIT=y
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BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/Freescale/linux-fslc.git"
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BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="efaf36531fe7b1fc15a48033e5972825c91f9fc6"
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BR2_LINUX_KERNEL_DEFCONFIG="imx_v7"
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BR2_LINUX_KERNEL_DTS_SUPPORT=y
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BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx7s-warp"
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# U-Boot
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BR2_TARGET_UBOOT=y
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BR2_TARGET_UBOOT_BOARDNAME="warp7"
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BR2_TARGET_UBOOT_CUSTOM_GIT=y
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BR2_TARGET_UBOOT_CUSTOM_REPO_URL="https://github.com/Freescale/u-boot-fslc.git"
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BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="7a8868eb526b7c1d5dc274bc666bfaef9585ba7c"
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BR2_TARGET_UBOOT_FORMAT_IMX=y
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# Filesystem
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BR2_ROOTFS_POST_IMAGE_SCRIPT="board/warp7/post-image.sh"
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BR2_TARGET_ROOTFS_EXT2=y
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BR2_TARGET_ROOTFS_EXT2_4=y
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# required tools to create the eMMC image
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BR2_PACKAGE_HOST_DOSFSTOOLS=y
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BR2_PACKAGE_HOST_GENIMAGE=y
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BR2_PACKAGE_HOST_MTOOLS=y
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