From: yrodguez@iuma.ulpgc.es
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] redboot startup mode
Date: Tue, 24 May 2005 18:26:00 -0000 [thread overview]
Message-ID: <20050524174110.zvo62etf4skoccg4@webmail.iuma.ulpgc.es> (raw)
hi,
i have a doubt/question?
i'm trying to compile a redboot in romram mode.
At http://sources.redhat.com/ecos/docs-latest/redboot/excaliburarm9.html
say that romram mode runs redboot from ram with redboot in flash. I supossed
that redboot is stored in flash memory and then it is copied from flash to ram.
But when i desassemble the file i get the code is mapped on ram (0x8000):
redboot.elf: file format elf32-littlearm
Disassembly of section .rom_vectors:
00008000 <__exception_handlers>:
8000: ea00000e b 8040 <_stext>
8004: e59ff018 ldr pc, [pc, #24] ; 8024 <.undefined_instruction>
8008: e59ff018 ldr pc, [pc, #24] ; 8028 <.software_interrupt>
800c: e59ff018 ldr pc, [pc, #24] ; 802c <.abort_prefetch>
8010: e59ff018 ldr pc, [pc, #24] ; 8030 <.abort_data>
8014: 00000000 andeq r0, r0, r0
8018: e59ff018 ldr pc, [pc, #24] ; 8038 <.IRQ>
801c: e59ff018 ldr pc, [pc, #24] ; 803c <.FIQ>
00008020 <vectors>:
8020: 00000040 andeq r0, r0, r0, asr #32
00008024 <.undefined_instruction>:
8024: 00008494 muleq r0, r4, r4
00008028 <.software_interrupt>:
8028: 000084b8 streqh r8, [r0], -r8
etc....
Maybe i don`t understand this mode at all.
thanks.
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
next reply other threads:[~2005-05-24 16:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-24 18:26 yrodguez [this message]
2005-05-24 22:27 ` Gary Thomas
[not found] ` <20050524175806.gj72jy7dy8kw0ck4@webmail.iuma.ulpgc.es>
2005-05-25 2:37 ` Gary Thomas
2005-05-25 6:57 ` yrodguez
2005-05-25 7:50 ` [ECOS] Clean room module loader + GPL module + Application C.J.
2005-05-26 12:30 ` Bart Veer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050524174110.zvo62etf4skoccg4@webmail.iuma.ulpgc.es \
--to=yrodguez@iuma.ulpgc.es \
--cc=ecos-discuss@sources.redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).