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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
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
But after pressing return the board hangs. Because there is an eeprom
onboard the RAM begins at 0x10000000
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:
ram : ORIGIN = 0x10200000, LENGTH = 0x10000000
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.