i.mx6q Linux-4.1.15移植笔记

使用主板：迅为i.mx6q开发板，2G DDR

参考文献：

fsl-yocto-L4.1.15_2.0.0-ga

IMXBSPPG Rev. 1, 01/2017

1.Freescale git下载L4.1.15_2.0.0-ga kernel源码

2.以imx6q-sabresd为模版，太懒了，我就不改名字了

3.编译环境设置，编译uImage

export ARCH=arm

export CROSS_COMPILE=/opt/imx6/iTOP-iMX6_android4.4.2/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-

make imx_v7_defconfig

make menuconfig：取消下面的设置

Boot options --->

[*] Support for the traditional ATAGS boot data passing

make uImage LOADADDR=0x12000000

make imx6q-sabresd.dts

4.按照i.MX Linux user's guide，SD卡分区

5.烧写u-boot，uImage，dts

dd if=u-boot.imx of=/dev/sdd bs=512 seek=2 conv=fsync

dd if=uImage of=/dev/sdd bs=512 seek=2048 conv=fsync

dd if=imx6q-sabresd.dtb of=/dev/sdd bs=512 seek=20480 conv=fsync

6,插入SD卡，启动开发板

7.设置环境变量，根据内核大小设置

setenv bootargs 'noinitrd console=ttymxc0,115200 root=/dev/mmcblk1p2 rw init=/linuxrc'

setenv bootcmd 'mmc dev 0; mmc read 0x11ffffc0 0x800 0x4000; mmc read 0x18000000 0x5000 0x800; bootm 0x11ffffc0 - 0x18000000

saveenv

8.reboot

gpio_get_value(USDHC2_CD_GPIO) = 1
switch to partitions #0, OK
mmc0 is current device

MMC read: dev # 0, block # 2048, count 16384 ... 16384 blocks read: OK

MMC read: dev # 0, block # 20480, count 2048 ... 2048 blocks read: OK
## Booting kernel from Legacy Image at 11ffffc0 ...
   Image Name:   Linux-4.1.15
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    6745696 Bytes = 6.4 MiB
   Load Address: 12000000
   Entry Point:  12000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 18000000
   Booting using the fdt blob at 0x18000000
   XIP Kernel Image ... OK
   Using Device Tree in place at 18000000, end 1800e344

Starting kernel ...

未完。。。