- 目标平台 明远智睿 EK314 CPU I.MAX6Q
- 内核版本 3.15.3
- 编译器 arm-none-linux-gnueabi-gcc-4.8.3
1。下载纯净内核
2。配置Makefile
3。拷贝cp imx_v6_v7_defconfig .config
4。# make menuconfig 退出保存
5。#make zImage 进行第一次编译，看能否通过
6。修改配置
Boot options —>
-*- Flattened Device Tree support
(noinitrd console=ttymxc0,115200) Default kernel command string
7。烧写启动
Starting kernel …
Booting Linux on physical CPU 0x0
Linux version 3.14.52 (root@lornyin-Inspiron-N4050) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #9 SMP Sat Oct 7 20:49:14 CST 2017
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: MYZR i.MX6 Evaluation Kit (MY-IMX6-EK314-6Q)
Memory policy: Data cache writealloc
PERCPU: Embedded 7 pages/cpu @bf7be000 s8128 r8192 d12352 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096
Kernel command line: console=ttymxc0,115200 cma=320M root=/dev/mmcblk3p2 rootwait rw
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1025880K/1048576K available (5571K kernel code, 311K rwdata, 1776K rodata, 267K init, 5490K bss, 22696K reserved, 0K highmem)
Virtual kernel memory layout:
。。。。。。。。
mmc1: BKOPS_EN bit is not set
snvs_rtc 20cc034.snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0)
imx-drm imx-drm: No connectors reported connected with modes
mmc1: new high speed DDR MMC card at address 0001
mmcblk0: mmc1:0001 SEM04G 3.68 GiB
mmcblk0boot0: mmc1:0001 SEM04G partition 1 2.00 MiB
mmcblk0boot1: mmc1:0001 SEM04G partition 2 2.00 MiB
mmcblk0rpmb: mmc1:0001 SEM04G partition 3 2.00 MiB
mmcblk0: p1 p2
mmcblk0boot1: unknown partition table
mmcblk0boot0: unknown partition table
ata1: SATA link down (SStatus 0 SControl 300)
[drm] Cannot find any crtc or sizes – going 1024×768
Console: switching to colour frame buffer device 128×48
imx-drm imx-drm: fb0: frame buffer device
imx-drm imx-drm: registered panic notifier
Waiting for root device /dev/mmcblk3p2…
卡死在这里，换上正常内核，启动对比启动信息，发现mmc节点应该是mmcblk0，而这里在Waiting for root device /dev/mmcblk3p2…
修改uboot参数
=> setenv mmcroot /dev/mmcblk0p2 rootwait rw
=> save
=> reset
成功启动
8。裁剪 （按个人需求）
1、去掉多余板卡支持
2、去掉声卡支持
3、去掉 Wireless LAN
4、去掉Multimedia support —>
Remote Controller support
Remote Controller devices
Remote controller decoders
V4L platform devices —-
Cameras/video grabbers support
2017-11-09
待续~~~~~~~~~~~