, <port-arm@NetBSD.org>
From: None <Lin.Colin@iac.com.tw>
List: port-arm
Date: 04/28/2004 10:02:54
Hi Jason,
Could you please teach me how to set up my linker script correctly?
Thanks and regards,
Colin
-------------------------------------------------------------------------=
-----------------------------
The content of ldscript.evbarm:
OUTPUT_ARCH(arm)
ENTRY(KERNEL_BASE_phys)
SECTIONS
{
KERNEL_BASE_phys =3D @KERNEL_BASE_PHYS@;
KERNEL_BASE_virt =3D @KERNEL_BASE_VIRT@;
=
=20
/* Kernel start: */
.start (KERNEL_BASE_phys) :
{
*(.start)
} =3D0
=
=20
/* Read-only sections, merged into text segment: */
.text (KERNEL_BASE_virt + SIZEOF(.start)) :
AT (LOADADDR(.start) + SIZEOF(.start))
{
*(.text)
*(.text.*)
*(.stub)
*(.glue_7t) *(.glue_7)
*(.rodata) *(.rodata.*)
} =3D0
PROVIDE (__etext =3D .);
PROVIDE (_etext =3D .);
PROVIDE (etext =3D .);
/* Adjust the address for the data segment to start on the next page
boundary. */
. =3D ALIGN(0x8000);
.data :
AT (LOADADDR(.text) + (ADDR(.data) - ADDR(.text)))
{
__data_start =3D . ;
*(.data)
*(.data.*)
}
.sdata :
AT (LOADADDR(.data) + (ADDR(.sdata) - ADDR(.data)))
{
*(.sdata)
*(.sdata.*)
}
_edata =3D .;
PROVIDE (edata =3D .);
__bss_start =3D .;
__bss_start__ =3D .;
.sbss :
{
PROVIDE (__sbss_start =3D .);
PROVIDE (___sbss_start =3D .);
*(.dynsbss)
*(.sbss)
*(.sbss.*)
*(.scommon)
PROVIDE (__sbss_end =3D .);
PROVIDE (___sbss_end =3D .);
}
.bss :
{
*(.dynbss)
*(.bss)
*(.bss.*)
*(COMMON)
/* Align here to ensure that the .bss section occupies space up to
_end. Align after .bss to ensure correct alignment even if the
.bss section disappears because there are no input sections. */
. =3D ALIGN(32 / 8);
}
. =3D ALIGN(32 / 8);
_end =3D .;
_bss_end__ =3D . ; __bss_end__ =3D . ; __end__ =3D . ;
PROVIDE (end =3D .);
}
-----Original Message-----
From: Jason Thorpe [mailto:thorpej@wasabisystems.com]=20
Sent: Wednesday, April 28, 2004 4:53 AM
To: Lin, Colin(=D7=F9=CB=EF=E4=CC IAC)
Cc: port-arm@netbsd.org
Subject: Re: KERNEL_BASE_VIRT & KERNEL_BASE_PHYS
On Apr 26, 2004, at 6:55 PM, <Lin.Colin@iac.com.tw> wrote:
> When the compiled kernel, which is of ELF format, is loaded by ICE,=20
> ICE tries to put it to 0xc0200000 and then it produces an error=20
> because dram isn=A2=AE|t there.
>
> What=A2=AE|s wrong with my KERNEL_BASE_PHYS & KERNEL_BASE_VIRT =
setting?
Nothing is wrong with them. You need to adjust your linker script to=20
provide explicit LMAs so that the ICE will load them at the physical=20
address, rather than trying to load them at the VMA (virtual address).
-- Jason R. Thorpe <thorpej@wasabisystems.com>