u-boot args / env to boot from SPI NOR Flash
Michael Machate
Hi,
While designing the update process of an im6 embedded system, I found the SWUpdate framework. SWUpdate is a great resource and I would like to use it. I am new to the topic and please give me some help.
I am building the Linux image in Yocto. It’s a custom board with an imx6 processor.
The following Memory Layout I want to setup:
SPI-NOR Flash 16MB
-uboot.imx 1MB mtd1
-uboot-env 64kB mtd2
-xyz.dtb 128kB mtd3
-recovery-kernel 6MB mtd4
-standard-kernel 8MB mtd5
NAND Flash 1GByte
-ubi rootfs mdt0
1) My question is how to setup the u-boot-env to boot from recovery-kernel / standard-kernel (SPI-NOR Flash/imx6).
2) Do I have to write any custom script to change the u-boot-env (switch between recovery and standard kernel)?
3) I prepared the following sw-description. Is there any thing missing to create an asymmetric update system?
4) Do you have a validation check tool for the sw-description file?
software =
{
version = "1.0";
myboard = {
hardware-compatibility: [ "revB", "revC", "revD"];
stable : {
recovery : {
images: (
{
name = "bootloader";
version = "2016.01";
install-if-different = true;
filename = "u-boot.imx";
device = "mtd1";
},
{
name = "dtb";
filename = "xyz.dtb";
device = "mtd3";
},
{
name = "recovery";
filename = "zImage-recovery";
device = "mtd4";
},
);
};
std_kernel : {
images: (
{
name = "std-kernel";
filename = "zImage-std-kernel";
device = "mtd5";
},
{
filename = "core-image-base-myboard.ubifs";
volume = "rootfs";
type = "ubivol"
},
);
};
};
}
}
Many thanks
Michael
