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redboot does not start in ram mode
- From: Martin Laabs <s8606710 at rcs dot urz dot tu-dresden dot de>
- To: ecos-devel at sources dot redhat dot com
- Date: Thu, 8 Jul 2004 22:54:55 +0200
- Subject: redboot does not start in ram mode
Hi,
I have a 3e-524 board with an IXP425. Because I want
to update the redboot I tried to compile a ram version.
Therefor I used the guide from intel beacuse the board seems
to be only slightly different from intels IXDP425 board.
I changed the memory map and tried to load/start the image. I failed.
After many attempt I tried to load the original RAM version that
is saved in the flash:
RedBoot> fis list
Name FLASH addr Mem addr Length Entry point
RedBoot 0x51000000 0x51000000 0x00040000 0x00000000
RedBoot config 0x517C0000 0x517C0000 0x00001000 0x00000000
FIS directory 0x517E0000 0x517E0000 0x00020000 0x00000000
RedBoot_RAM 0x51040000 0x11400000 0x00040000 0x00000000
zImage 0x51080000 0x11400000 0x000C0000 0x00000000
RedBoot> fis load RedBoot_RAM
RedBoot> go
But after pressing return the board hangs. Because there is an eeprom
onboard the RAM begins at 0x10000000
edBoot> v
RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version 2.00 - built 10:04:47, Dec 17 2003
Platform: 3eTI-EAP (XScale)
Copyright (C) 2000, 2001, 2002, Red Hat, Inc.
RAM: 0x10000000-0x12000000, 0x10115778-0x11fdd000 available
FLASH: 0x51000000 - 0x51800000, 64 blocks of 0x00020000 bytes each.
But when I load the RedBoot_RAM to 0x10200000 (or an other
explicit address with the -b option) I get much binary data
printet onto my terminal.
In my own version I changed only the following in the .ldi file:
MEMORY
{
ram : ORIGIN = 0x10200000, LENGTH = 0x10000000
}
SECTIONS
{
SECTIONS_BEGIN
SECTION_fixed_vectors (ram, 0x10200020, LMA_EQ_VMA)
SECTION_rom_vectors (ram, 0x10220000, LMA_EQ_VMA)
SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA)
[...] (rest unchanged)
and of cause CYGMEM_REGION_ram in the coresponding header file.
Do you have a hint how to start the RAM image from the flash
or my own compiled image? Or maybe you can tell me how to
debug it without JTAG.
Thank you
Martin Laabs