Hi,
With 2011.03 uboot, I am adding firmware flashing feature to our
arm cortex a9 soc platform via usb, in which the data firstly be
uploaded to memory wholly (more than 200MB, thanks our 512MB physical
memory), then burned.
By my understanding, after relocation the successive memory range
(0~~ relocaddr) can be (re)used. however, if the original text section
(in my case, 0x01500000) is written, the data abort happens when
accessing 0x01600000; if the memory section (0x01500000~0x01600000)
not written, everything is ok. please correct me if I am wrong.
u-boot image:
arm-none-linux-gnueabi-objdump -h .obj/boot/uboot/u-boot
.obj/boot/uboot/u-boot: file format elf32-littlearm
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 000373f4 01500000 01500000 00008000 2**5
CONTENTS, ALLOC, LOAD, READONLY, CODE
1 .rodata 0000804c 015373f4 015373f4 0003f3f4 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .hash 00000040 0153f440 0153f440 00047440 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
3 .data 00000a74 0153f480 0153f480 00047480 2**3
CONTENTS, ALLOC, LOAD, DATA
4 .got.plt 0000000c 0153fef4 0153fef4 00047ef4 2**2
CONTENTS, ALLOC, LOAD, DATA
5 .u_boot_cmd 000004f8 0153ff00 0153ff00 00047f00 2**2
CONTENTS, ALLOC, LOAD, DATA
6 .dynsym 000000b0 015462a0 0154bb6c 00053b6c 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
7 .rel.dyn 00005ea8 015403f8 015403f8 000483f8 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
8 .bss 000058cc 015403f8 015403f8 0004e2a0 2**3
ALLOC
9 .ARM.attributes 0000002d 00000000 00000000 00053c1c 2**0
CONTENTS, READONLY
and the u-boot runtime info
U-Boot 2011.03-dirty-svn4940 (May 26 2011 - 15:08:09) for PRIMA2
U-Boot code: 01500000 -> 015403F8 BSS: -> 01545CC4
CPU: Prima2
Board: Prima2 EVB
monitor len: 00045CC4
ramsize: 20000000
TLB table at: 1fff0000
Top of RAM usable for U-Boot at: 1fff0000
Reserving 279k for U-Boot at: 1ffaa000
Reserving 1056k for malloc() at: 1fea2000
Reserving 24 Bytes for Board Info at: 1fea1fe8
Reserving 120 Bytes for Global Data at: 1fea1f70
New Stack Pointer is: 1fea1f68
RAM Configuration:
Bank #0: 00000000 512 MiB
relocation Offset is: 1eaaa000
monitor flash len: 00046350
Now running in RAM - U-Boot at: 1ffaa000
MMC: to Init SD0...
Prima2 SD/MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 0
Prima2 #
Thanks.
Yuping
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