Uncompressing is not happening with zImage while booting up with u-boot

问题

I am working on microzed 7010 board, I have manualy compiled kernel, u-boot, fsbl, and .bit (vivado). Board is booting well with all setup (without using petalinux). But i have noticed that kernel is not Uncompressing kernel... with zImage nor uImage. whereas i can see bootlogs with that of petalinux's images.

INPUT :

1 . zImage env is

zImage=tftpboot 0x3000000 zImage && tftpboot 0x2A00000 system.dtb && bootz 0x3000000 - 0x2A00000

2 . Boot log is =>

Zynq> run zImage
[2017-10-25 15:57:11
ethernet@e000b000 Waiting for PHY auto negotiation to complete......... TIMEOUT !
[2017-10-25 15:57:15
Zynq> run zImage 
[2017-10-25 15:57:22
Using ethernet@e000b000 device
TFTP from server 172.16.9.187; our IP address is 172.16.9.25
Filename 'zImage'.
Load address: 0x3000000
    Loading:#####################################################################################################################################################################################################################################

3.9 MiB/s
    done
Bytes transferred = 3913840 (3bb870 hex)
    Using ethernet@e000b000 device
    TFTP from server 172.16.9.187; our IP address is 172.16.9.25
    Filename 'system.dtb'.
    Load address: 0x2a00000
    Loading: #
    3.3 MiB/s
    done
Bytes transferred = 13644 (354c hex)
    Kernel image @ 0x3000000 [ 0x000000 - 0x3bb870 ]
## Flattened Device Tree blob at 02a00000
    Booting using the fdt blob at 0x2a00000
    Loading Device Tree to 1fff9000, end 1ffff54b ... OK

    Starting kernel ...

    Booting Linux on physical CPU 0x0
    Linux version 4.6.0-xilinx-00003-g2762bc9 (pritam@pritam) (gcc version 5.2.1 20151005 (Linaro GCC 5.2-2015.11-2) ) #3 SMP PREEMPT Wed Oct 25 10:28:387
    [2017-10-25 15:57:24
    CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d

3 . In u-boot I have given bootz support

4 . uImage is formed by

mkimage -A arm -O linux -T kernel -C none -a 0x10000000 -e 0x10000000 -n "Linux kernel" -d arch/arm/boot/zImage uImage

What causing it not to uncompress kernel ? Is u-boot compressing the kernel and booting ?

Any help will be appreciated.

Thanks and regards, Pritam

来源：https://stackoverflow.com/questions/46930346/uncompressing-is-not-happening-with-zimage-while-booting-up-with-u-boot

标签

linux-kernel

embedded-linux

U-Boot

zynq

petalinux