[ECOS] How to handle it???

[RandyLin at mxic dot com dot tw]

Can you use "load -m ymodem" or "load -m xmodem" to load ap??
I saw your mlt_arm_snds_rom.ldi and mlt_arm_snds_ram.ldi....it may be
wrong...
I assume your redboot is ROM mode, so  redboot's data section is at 0x20000
when u use arm-elf-gdb to load ap(RAM mode), it overwrite the redboot's
data section,
because your mlt_arm_snds_ram.ldi locate the rom_vectors and following
section to 0x20000
so that's why u got the "Ignoring packet error,  continuing..",
I modify the SECTION_rom_vectors (ram, 0x00050000, LMA_EQ_VMA) in
mlt_arm_snds_ram.ldi
"-r" option is for binary data, your ap is elf format, don't use "-r"
can u post the whole mlt_arm_snds_rom.ldi?
I don't know why you got the message "0x20000 which is not in RAM"
wish this help.




Thanks RandyLin:
       Now my redboot can work,and I can use redboot command "load ......-m

tftp....."to download app to snds board.
       Howerer, if not using -r option,the error as displayed "***Abort!
Attempt to load ELF data to address: 0x00020000 which is not in RAM".
       If using  -r option,app looks like to be downloaded correctly,but
the
display is "Raw file loaded 0x00300000-0x003c6116, assumed entry at
0x00300000",and then if  using redboot command "go 0x00300000" to execute
the app,the redboot will display some strange strings as
"
$T0a0f:86000000;0d:80060200;#17$T0a0f:86000000;0d:80060200;
#17$T0a0f:8600"on
console.

to above,the config is SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA)   and
SECTION_rom_vectors (ram, 0x20000, LMA_EQ_VMA) in file mlt_arm_snds_ram.ldi

and  SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA)  and  SECTION_data (ram,

0x20000, FOLLOWING (.gcc_except_table)) in mlt_arm_snds_rom.ldi

If using arm-elf-gdb to download app,the steps is as following:
1 [root@zheng root]#arm-elf-gdb
2(gdb) target remote /dev/ttyS0
Remote debugging using /dev/ttyS0
0x01804b30 in ?? ()
(gdb) load /tftpboot/hello
Loading section .rom_vectors, size 0x40 lma 0x20000
Loading section .text, size 0xfe00 lma 0x20040
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...

and gdb use the same serial line as the hyperspatial,the baudrate is 38400.


Why did these error happen?Can some one have good idea to handle it?

Thanks a lot!

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and search the list archive: http://sources.redhat.com/ml/ecos-discuss