* [ECOS] ARM interrupt handling
@ 2004-06-23 14:34 Davide Ciminaghi
0 siblings, 0 replies; only message in thread
From: Davide Ciminaghi @ 2004-06-23 14:34 UTC (permalink / raw)
To: ecos-discuss
Hi,
I have an ARM7 (Samsung s3c44b0x) target with no RAM at address 0 and,
as far as I know, no way to remap RAM at address 0.
I'd like to run a RAM application "on top" of redboot (compiled with
ROM startup).
There will also be a flash region with some data read/written by the
application and maybe initialized by redboot.
The application needs interrupts and kernel support.
The question is: how can Redboot invoke the application's irq handlers ?
My problem is that the application cannot overwrite the redboot vectors
because there's flash at address 0. Shall I modify the hal (vectors.S)
adding some "trampoline" code with a jump to the application's handlers ?
Thanks and regards
Davide
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2004-06-23 14:34 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-06-23 14:34 [ECOS] ARM interrupt handling Davide Ciminaghi
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).