ARM: pxa/corgi: armv5te kernel 4.12 fails to decompress compiled with gcc7

[Petr Cvek]

Dne 17.10.2017 v 10:02 Andrea Adami napsal(a):
> <cut>
> 
> Hi,
Hi

> 
> I am trying to debug further but I don't have any output on serial console...
> I enabled:
> 
> CONFIG_DEBUG_LL=y
> CONFIG_DEBUG_PXA_UART1=y
> # CONFIG_DEBUG_ICEDCC is not set
> # CONFIG_DEBUG_SEMIHOSTING is not set
> # CONFIG_DEBUG_LL_UART_8250 is not set
> # CONFIG_DEBUG_LL_UART_PL01X is not set
> CONFIG_DEBUG_LL_INCLUDE="debug/8250.S"
> CONFIG_DEBUG_UART_8250=y
> CONFIG_DEBUG_UART_PHYS=0x40100000
> CONFIG_DEBUG_UART_VIRT=0xf6200000
> CONFIG_DEBUG_UART_8250_SHIFT=2
> # CONFIG_DEBUG_UART_8250_WORD is not set
> # CONFIG_DEBUG_UART_8250_PALMCHIP is not set
> # CONFIG_DEBUG_UART_8250_FLOW_CONTROL is not set
> CONFIG_UNCOMPRESS_INCLUDE="mach/uncompress.h"
> CONFIG_EARLY_PRINTK=y
> 
> then I added #define DEBUG  to both head.S and decompress.c under
> arm/boot/compressed.
> I added earlyprintk to the cmdline args used by the kexec bootloader but nothing
> 
> That kernel does boot silently, just 'Uncompresing..' then
> 'XZ-compressed data is corrupt -- System halted'
> 
> I do have output from the Angel bootloader at 9600 and by the kernel
> at 115200 so the uart is working...
> Any hint?

If it is a problem with gcc (as Russell said before), there is no way 
you can fix it in the kernel. Only compiling it with an older gcc 
version can help.

Maybe you can try to compile it for armv4 code.

best regards,
Petr