+++ /dev/null
-From 42cc2cffb6d550fbb21dad033d2564d4da571015 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
-Date: Sat, 1 Dec 2018 12:46:37 +0100
-Subject: [PATCH] imx6: apalis: Make the boot process more generic
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-I'm preparing support for Apalis imx6 boards in OpenWrt and I've ended
-up with quite huge patchset against upstream U-Boot 2018.03, so I'm
-trying to propose more generic way of boot process handling.
-
-In OpenWrt we usually have kernel, dtbs and U-Boot boot script in boot
-partition with ext4fs, so for some use cases it would be handy to be
-able to replace some of the files in the boot partion, that's why I've
-added write support to the ext4.
-
-I've added `set_blkcnt` environment variable which is needed for every
-`mmc write` command as we need to always specify size in block count.
-This is copy&pasted from official Toradex's flashing scripts, so all the
-credits for this work belongs to them.
-
-Currently the rootfs location is passed via mmcblk number and the
-problem with this approach is that the mmcblk number for the boot device
-changes depending on the kernel version and imx6 SoC type. In order to
-avoid such issues, use the UUID method to specify the rootfs location.
-
-I've added new boot sequence, where we first try to load and run boot
-script defined in the new `script` variable, so the boot process could
-be more generic and overridden by the distro. When the boot script isn't
-loaded, it will use the previous boot sequence so it should be backward
-compatible.
-
-For the recovery purposes and better end user experience I've added boot
-from SDP as the last boot command if every other boot option fails. I
-plan to use SDP as official flashing/recovery procedure in OpenWrt for
-Apalis imx6 boards.
-
-I've copy&pasted almost everything from the `f086812a mx6sxsabresd: Use
-PARTUUID to specify the rootfs location` commit, so credits for the rest
-of this patch belongs to Fabio.
-
-Cc: Stefan Agner <stefan.agner@toradex.com>
-Cc: Max Krummenacher <max.krummenacher@toradex.com>
-Signed-off-by: Petr Štetiar <ynezz@true.cz>
----
- configs/apalis_imx6_defconfig | 2 ++
- include/configs/apalis_imx6.h | 26 +++++++++++++++++++++-----
- 2 files changed, 23 insertions(+), 5 deletions(-)
-
---- a/configs/apalis_imx6_defconfig
-+++ b/configs/apalis_imx6_defconfig
-@@ -40,6 +40,7 @@ CONFIG_CMD_DFU=y
- CONFIG_CMD_GPIO=y
- CONFIG_CMD_I2C=y
- CONFIG_CMD_MMC=y
-+CONFIG_CMD_PART=y
- CONFIG_CMD_USB=y
- CONFIG_CMD_USB_SDP=y
- CONFIG_CMD_USB_MASS_STORAGE=y
-@@ -49,6 +50,7 @@ CONFIG_CMD_PING=y
- CONFIG_CMD_BMP=y
- CONFIG_CMD_CACHE=y
- CONFIG_CMD_EXT4=y
-+CONFIG_CMD_EXT4_WRITE=y
- CONFIG_CMD_FAT=y
- CONFIG_CMD_FS_GENERIC=y
- CONFIG_ENV_IS_IN_MMC=y
---- a/include/configs/apalis_imx6.h
-+++ b/include/configs/apalis_imx6.h
-@@ -138,9 +138,9 @@
- "imx6q-colibri-cam-eval-v3.dtb fat 0 1"
-
- #define EMMC_BOOTCMD \
-- "emmcargs=ip=off root=/dev/mmcblk0p2 rw,noatime rootfstype=ext3 " \
-+ "emmcargs=ip=off root=PARTUUID=${uuid} rw,noatime rootfstype=ext3 " \
- "rootwait\0" \
-- "emmcboot=run setup; " \
-+ "emmcboot=run setup; run finduuid;" \
- "setenv bootargs ${defargs} ${emmcargs} ${setupargs} " \
- "${vidargs}; echo Booting from internal eMMC chip...; " \
- "run emmcdtbload; load mmc 0:1 ${kernel_addr_r} " \
-@@ -197,10 +197,17 @@
- #define FDT_FILE "imx6q-apalis_v1_0-eval.dtb"
- #endif
- #define CONFIG_EXTRA_ENV_SETTINGS \
-- "bootcmd=run emmcboot ; echo ; echo emmcboot failed ; " \
-+ "script=boot.scr\0" \
-+ "finduuid=part uuid mmc 0:2 uuid\0" \
-+ "loadbootscript=" \
-+ "load mmc 0:1 ${loadaddr} ${script};\0" \
-+ "bootscript=echo Running bootscript from mmc ...; " \
-+ "source\0" \
-+ "bootcmd_default=run emmcboot ; echo ; echo emmcboot failed ; " \
- "run nfsboot ; echo ; echo nfsboot failed ; " \
- "usb start ;" \
-- "setenv stdout serial,vga ; setenv stdin serial,usbkbd\0" \
-+ "setenv stdout serial,vga ; setenv stdin serial,usbkbd;" \
-+ "sdp 0\0" \
- "boot_file=uImage\0" \
- "console=ttymxc0\0" \
- "defargs=enable_wait_mode=off vmalloc=400M\0" \
-@@ -228,7 +235,16 @@
- "vidargs=mxc_hdmi.only_cea=1 " \
- "video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 " \
- "video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off " \
-- "fbmem=32M\0 "
-+ "fbmem=32M\0 " \
-+ "set_blkcnt=setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200\0"
-+
-+#define CONFIG_BOOTCOMMAND \
-+ "mmc dev 0;" \
-+ "if run loadbootscript; then " \
-+ "run bootscript; " \
-+ "else " \
-+ "run bootcmd_default; " \
-+ "fi; "
-
- /* Miscellaneous configurable options */
- #undef CONFIG_SYS_CBSIZE
---
-1.9.1
-
projects / openwrt / staging / wigyori.git / blobdiff