AnsweredAssumed Answered

can not bootup the mfg kernel zImage

Question asked by 逍遥 李 on Jan 8, 2017

platform : i.mx6dl sabresd

uboot     : 2014.04

kernel    : 3.10.53


Changing the ddr from 2*256 to 4*128.

Using the Uart1 for debug print.


1.   I'm using the yocto project to build the mfgtools' uboot and zImage,  buidling correctly.

After downloaded, it can't boot up the zImage, uart log as blew:

Starting kernel ...
Uncompressing Linux... done, booting the kernel.

Error: unrecognized/unsupported machine ID (r1 = 0x00000f8c).

Available machine support:

ID (hex) NAME
ffffffff Generic DT based system
ffffffff Freescale i.MX6 Quad/DualLite (Device Tree)
ffffffff Freescale i.MX6 SoloLite (Device Tree)
ffffffff Freescale i.MX6 SoloX (Device Tree)


2.    then I

1)changed the machine ID passed from u-boot: 

kernel_entry(0, 0xffffffff, r2);

2)have opened the menuconfig "kernel hacking"->"early printk"、"kernel low-level debugging port(i.mx61/dl debug uart) "、"(1) debug uart port selection".

then it hanged at the "Uncompressing Linux... done, booting the kernel." and the mfg tools restart "Loading u-boot ->Loading kernel-> Loading Initramfs->Loading device tree" ->"Jumping to OS image" again and again.


uart log as the attachment "uart_log0"


How to debug this issue??????

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