Mike Frysinger wrote:
> On Tuesday 05 May 2009 04:55:44 Jesper Vestergaard wrote:
>
>> mkimage -A avr32 -O u-boot -T standalone -C none -a 0x11000000 -e
>> 0x11000000 -n "myapp" -d test.bin test_uboot.bin
>>
>
> the entry/load addresses need to match reality. you cant pick them out of
> the
> air without properly setting them everywhere.
>
> you also didnt say how you compiled/linked the standalone code ... you must
> be
> sure to not use any files/libraries/toolchain that expect an operating system
> (like Linux).
>
Here's how i compiled it:
avr32-gcc -O2 -Wall -c -fmessage-length=0 -mpart=ap7000
-ffunction-sections -o test.o test.c
avr32-ld test.o -e 0x00000000 -T simple.lds -o test.out
avr32-objcopy -O binary test.out test.bin
And the simple.lds:
SECTIONS
{
. = 0x11000000;
/*. = 0x00000000; */
.text : { *(.text) }
/* . = 0x8000000; */
.data : { *(.data) }
.bss : { *(.bss) }
}
and a objectdump:
avr32-objdump -d test.out
test.out: file format elf32-avr32
Disassembly of section .text.main:
11000000 <main>:
11000000: d7 03 nop
11000002: d7 03 nop
11000004: d7 03 nop
11000006: d7 03 nop
11000008: c0 08 rjmp 11000008 <main+0x8>
>
>> ICnova> tftp 11000000 test_uboot.bin
>> ICnova> bootm 11000000
>> Load Address: 11000000
>> Entry Point: 11000000
>>
> you shoulud not load (tftp) the bootable image to the same address that it
> will be uncompressing to (load address).
>
> really you should read doc/README.standalone and the simple examples in
> examples/ instead of trying random commands.
> -mike
>
According to the Makefile in the example directory i should load the
binary to 0x00000000
ifeq ($(ARCH),avr32)
LOAD_ADDR = 0x00000000
endif
but looking at the uboot startup it says that the flash is placed at
that address and that the SDRAM is placed at 0x10000000.
Flash: 8 MB at address 0x00000000
SDRAM: 64 MB at address 0x10000000
Which of the addresses should i use?
I couldn't find any documentation about what entry address i should use
for the avr32 but according to the README.standalone it is only the
power pc which needs a entry address different from the load address so
i guess load address=entry address.
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