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0935

在 m300_ubuntu_15 虛擬機上安裝 Yocto project cross-compilation toolchain

http://downloads.yoctoproject.org/releases/yocto/yocto-2.1/toolchain/

安裝的是 32 位元的 poky-glibc-i686-core-image-sato-armv7a-neon-toolchain-2.1.sh

jeffrey@jeffrey-VirtualBox:~/Downloads$ ./poky-glibc-i686-core-image-sato-armv7a-neon-toolchain-2.1.sh 
Poky (Yocto Project Reference Distro) SDK installer version 2.1
===============================================================
Enter target directory for SDK (default: /opt/poky/2.1): 
You are about to install the SDK to "/opt/poky/2.1". Proceed[Y/n]? y
[sudo] password for jeffrey: 
Extracting SDK...............................................................done
Setting it up...done
SDK has been successfully set up and is ready to be used.
Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g.
 $ . /opt/poky/2.1/environment-setup-armv7a-neon-poky-linux-gnueabi
jeffrey@jeffrey-VirtualBox:~/Downloads$

cd 到 U-Boot 的 source code 目錄下後先 source the environment setup script

jeffrey@jeffrey-VirtualBox:~/M300/fsl-release-bsp/build_small/tmp/work/imx6ulevk-poky-linux-gnueabi/u-boot-imx/2015.04-r0/git$ source /opt/poky/2.1/environment-
setup-armv7a-neon-poky-linux-gnueabi

然後照著 How-To use NAND boot on i.MX6UL EVK board 來 Build the new u-boot.imx

  • make distclean
  • make mx6ul_14x14_evk_nand_defconfig
  • make
inux-gnueabi 
jeffrey@jeffrey-VirtualBox:~/M300/fsl-release-bsp/build_small/tmp/work/imx6ulevk-poky-linux-gnueabi/u-boot-imx/2015.04-r0/git$ make distclean
  CLEAN   scripts/basic
  CLEAN   scripts/kconfig
  CLEAN   include/config include/generated
  CLEAN   .config include/autoconf.mk include/autoconf.mk.dep include/config.h
jeffrey@jeffrey-VirtualBox:~/M300/fsl-release-bsp/build_small/tmp/work/imx6ulevk-poky-linux-gnueabi/u-boot-imx/2015.04-r0/git$ make mx6ul_14x14_evk_nand_defconf
ig
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/zconf.lex.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
#
# configuration written to .config
#
jeffrey@jeffrey-VirtualBox:~/M300/fsl-release-bsp/build_small/tmp/work/imx6ulevk-poky-linux-gnueabi/u-boot-imx/2015.04-r0/git$ make
scripts/kconfig/conf --silentoldconfig Kconfig
  CHK     include/config.h
  ...
  LDS     u-boot.lds
  LD      u-boot
  OBJCOPY u-boot.bin
  CFGS    board/freescale/mx6ul_14x14_evk/imximage.cfg.cfgtmp
  MKIMAGE u-boot.imx
  OBJCOPY u-boot.srec

ucl2.xml 內容修改如下

<UCL>
  <CFG>
    <STATE name="BootStrap" dev="MX6SL" vid="15A2" pid="0063"/>
    <STATE name="BootStrap" dev="MX6D" vid="15A2" pid="0061"/>
    <STATE name="BootStrap" dev="MX6Q" vid="15A2" pid="0054"/>
    <STATE name="BootStrap" dev="MX6SX" vid="15A2" pid="0071"/>
    <STATE name="BootStrap" dev="MX6UL" vid="15A2" pid="007D"/>
    <STATE name="BootStrap" dev="MX7D" vid="15A2" pid="0076"/>
    <STATE name="Updater"   dev="MSC" vid="066F" pid="37FF"/>
  </CFG>

  <LIST name="NAND Flash" desc="Choose NAND as media">

	<CMD state="BootStrap" type="boot" body="BootStrap" file ="firmware/u-boot-imx6ul%6uluboot%_%nand%.imx" ifdev="MX6UL">Loading U-boot</CMD>

	<CMD state="BootStrap" type="load" file="firmware/zImage" address="0x80800000"
		loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" ifdev="MX6SL MX6SX MX7D MX6UL">Loading Kernel.</CMD>

	<CMD state="BootStrap" type="load" file="firmware/%initramfs%" address="0x83800000"
				loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" ifdev="MX6SL MX6SX MX7D MX6UL">Loading Initramfs.</CMD>

	<CMD state="BootStrap" type="load" file="firmware/zImage-imx6ul-%6uldtb%-%nanddtb%.dtb" address="0x83000000"
		loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" ifdev="MX6UL">Loading device tree.</CMD>

	<CMD state="BootStrap" type="jump" > Jumping to OS image. </CMD>


  <!--burn the uboot to NAND: --> 
  <CMD state="Updater" type="push" body="$ mount -t debugfs debugfs /sys/kernel/debug">Mounting debugfs</CMD>
  <CMD state="Updater" type="push" body="$ flash_erase /dev/mtd%part_uboot% 0 0">Erasing Boot partition</CMD>
  <CMD state="Updater" type="push" body="send" file="files/u-boot-imx6ul%6uluboot%_%nand%.imx" ifdev="MX6UL">Sending u-boot.bin</CMD>
  <CMD state="Updater" type="push" body="$ kobs-ng init -x -v --chip_0_device_path=/dev/mtd%part_uboot% $FILE">Flashing Bootloader</CMD>

  <CMD state="Updater" type="push" body="$ echo Update Complete!">Done</CMD>

  </LIST>

</UCL>

透過 MfgTool 燒錄的過程記錄在 2016-07-25-MfgTool.log

試著從 NAND Flash 開機

還是失敗

1045

差不多可以整理一下問題然後尋求協助了

1125

已經在論壇上 https://community.nxp.com/docs/DOC-236994 發問

We follow this guide(https://community.nxp.com/docs/DOC-236994) to try to use NAND boot on i.MX6UL EVK board The NAND Flash we used is MX30LF1G18AC - 3V, 1G-bit NAND Flash Memory

The configuration of NAND flash as following: BOOT_CFG1[7] = 1'b1 - Boot fro NAND Inferface BOOT_CFG1[6] = 1'b0 - raw NAND BOOT_CFG1[5:4] = 2'b01 - 64 pages in block BOOT_CFG1[3:2] = 2'b00 - 1 nand device BOOT_CFG1[1:0] = 2'b01 - 2 row address cycles

The MfgTool we used is L4.1.15_1.0.0_ga-mfg-tools.tar.gz

After burned the NAND flash, we change the boot mode to boot from NAND But can not see anything from console(we already make sure the baud rate setting) we can change to boot from MicroSD, so we use U-Boot tool "nand dump" to make sure MfgTool already burned the image we want

Please help us this issue

順便幫 i.MX6UL 的 FAE Mike 還有 NAND Flash 的 FAE Frank update 一下

1130

感覺要看一下跟 i.MX6UL boot 的相關部分

看看從 NAND Flash boot 還要注意些什麼

1315

我們目前 M300 的 CPU Board 的 BOOT_CFG2 為 0x08

跟 公板 一樣

這表示 BOOT_CFG2[4:3] 為 2'b01 - 2 boot search count

拜託 morris 幫我將 BOOT_CFG2 改成 0x00 - BOOT_CFG2[4:3] 為 2'b00 雖然一樣是 2 boot search count

不過 i.MX 6UltraLite Applications Processor Reference Manual 的 8.5.2.1 NAND eFUSE Configuration 提到

BOOT_CFG2[4:3] 的 shipped value 為 2'b00

1430

morris 已經幫我將 3 號板的 BOOT_CFG2 改成 0x00 - BOOT_CFG2[4:3] 為 2'b00

開機... 挑戰失敗...

已經沒頭緒要 try 什麼了

1735

如果從 MicroSD 開機的話

U-Boot 有提供一個工具叫做 fuse

搭配 i.MX 6UltraLite Applications Processor Reference Manual 的 Chapter 35 On-Chip OTP Controller (OCOTP_CTRL)

從 35.5 OCOTP Memory Map/Register Definition 的 OCOTP memory map 可以知道怎麼利用 U-Boot 的 fuse 來存取相對應的 NAND Boot eFuse

例如 BOOT_CFG1 的 addr 為 0x450[7:0]

從 OCOTP memory map 的 Absolute address(hex) 往下找到 21B_C450

找到 35.5.16 Value of OTP Bank0 Word5 (Configuration and Manufacturing Info.) (OCOTP_CFG4)

所以我們知道使用 fuse read 0 5 便可以讀取 0x450[31:0] 的值

使用 fuse prog 0 5 0x12345678 便可以設定 0x450[31:0] 的值

依此類推

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