Latest revision as of 12:16, 16 October 2017

Flash Images to NAND

using nand-recovery.sh script

Variscite provides a sample script which burns all required images (MLO, U-BOOT, zImage, device tree, and UBI rootfs) to NAND-Flash.
For sample script, please refer to : https://github.com/varigit/meta-variscite-amx3/blob/master/utils/nand-recovery.sh
In the above example script, NAND-Flash binaries reside in /opt/TISDK on the SD-Card

Step by step manual flashing of NAND binaries

Replacing Nand Flash images can be done from either Linux user space or U-Boot.
From Linux shell

  << Flash MLO (4 copies) >>
$ flash_erase /dev/mtd0 0 0
$ flash_erase /dev/mtd1 0 0
$ flash_erase /dev/mtd2 0 0
$ flash_erase /dev/mtd3 0 0
$ nandwrite -p /dev/mtd0 /opt/TISDK/nand/MLO
$ nandwrite -p /dev/mtd1 /opt/TISDK/nand/MLO
$ nandwrite -p /dev/mtd2 /opt/TISDK/nand/MLO
$ nandwrite -p /dev/mtd3 /opt/TISDK/nand/MLO

  << Install device tree >>
$ flash_erase /dev/mtd4 0 0
$ nandwrite -p /dev/mtd4 /opt/TISDK/zImage-var-som-amx3.dtb

  << Install U-Boot >>
$ flash_erase /dev/mtd5 0 0
$ flash_erase /dev/mtd6 0 0
$ flash_erase /dev/mtd7 0 0
$ nandwrite -p /dev/mtd5 /opt/TISDK/nand/u-boot.img

  << Install Kernel >>
$ flash_erase /dev/mtd8 0 0
$ nandwrite -p /dev/mtd8 /opt/TISDK/zImage

  << Install UBI rootfs >>
$ flash_erase /dev/mtd9 0 0 > /dev/null
$ ubiformat /dev/mtd9 -f /opt/TISDK/rootfs-var-som-amx3.ubi.img -s 2048 -O 2048

@@ Line 7: / Line 7: @@
 == Step by step manual flashing of NAND binaries ==
-Replacing Nand Flash images can be done from either Linux user space or U-Boot.
+Replacing Nand Flash images can be done from either Linux user space or U-Boot. <br>
-<u>From U-Boot</u><br>
-<pre>U-Boot # mmc rescan
-U-Boot # nand erase 0x0 0x280000
-U-Boot # mmc rescan
-U-Boot # fatload mmc ${mmc_dev} ${loadaddr} MLO
-U-Boot # nand write ${loadaddr} 0x0 0x20000
-U-Boot # nand write ${loadaddr} 0x20000 0x20000
-U-Boot # nand write ${loadaddr} 0x40000 0x20000
-U-Boot # fatload mmc ${mmc_dev} ${loadaddr} u-boot.img
-U-Boot # nand write ${loadaddr} 0x80000 0x1c0000
-U-Boot # fatload mmc ${mmc_dev} ${loadaddr} uImage
-U-Boot # nand erase 0x280000 0x500000
-U-Boot # nand write ${loadaddr} 0x280000 0x500000
-</pre>
 <u>From Linux shell</u><u></u><br>
-<pre>  &lt;&lt; Install SPL &gt;&gt;
+<pre>
+  &lt;&lt; Flash MLO (4 copies) &gt;&gt;
 $ flash_erase /dev/mtd0 0 0
 $ flash_erase /dev/mtd1 0 0
 $ flash_erase /dev/mtd2 0 0
 $ flash_erase /dev/mtd3 0 0
-$ nandwrite -p /dev/mtd0 &lt;MLO file&gt;
+$ nandwrite -p /dev/mtd0 /opt/TISDK/nand/MLO
-$ nandwrite -p /dev/mtd1 &lt;MLO file&gt;
+$ nandwrite -p /dev/mtd1 /opt/TISDK/nand/MLO
-$ nandwrite -p /dev/mtd2 &lt;MLO file&gt;
+$ nandwrite -p /dev/mtd2 /opt/TISDK/nand/MLO
-$ nandwrite -p /dev/mtd3 &lt;MLO file&gt;
+$ nandwrite -p /dev/mtd3 /opt/TISDK/nand/MLO
+  &lt;&lt; Install device tree &gt;&gt;
+$ flash_erase /dev/mtd4 0 0
+$ nandwrite -p /dev/mtd4 /opt/TISDK/zImage-var-som-amx3.dtb
    &lt;&lt; Install U-Boot &gt;&gt;
-$ flash_erase /dev/mtd4 0 0
 $ flash_erase /dev/mtd5 0 0
-$ nandwrite -p /dev/mtd4 &lt;u-boot.img file&gt;
+$ flash_erase /dev/mtd6 0 0
+$ flash_erase /dev/mtd7 0 0
+$ nandwrite -p /dev/mtd5 /opt/TISDK/nand/u-boot.img
    &lt;&lt; Install Kernel &gt;&gt;
-$ flash_erase /dev/mtd6 0 0
+$ flash_erase /dev/mtd8 0 0
-$ nandwrite -p /dev/mtd6 &lt;uImage file&gt;
+$ nandwrite -p /dev/mtd8 /opt/TISDK/zImage
+  &lt;&lt; Install UBI rootfs &gt;&gt;
+$ flash_erase /dev/mtd9 0 0 > /dev/null
+$ ubiformat /dev/mtd9 -f /opt/TISDK/rootfs-var-som-amx3.ubi.img -s 2048 -O 2048
 </pre>

VAR-SOM-AM33 NAND Flash Burning: Difference between revisions

Latest revision as of 12:16, 16 October 2017

Flash Images to NAND

using nand-recovery.sh script

Step by step manual flashing of NAND binaries