From: Scott McNutt <smcnutt@psyent.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 15/21] nios2: Generic system restart support
Date: Tue, 08 Mar 2011 19:13:42 -0500 [thread overview]
Message-ID: <4D76C636.9090907@psyent.com> (raw)
In-Reply-To: <1299519462-25320-16-git-send-email-Kyle.D.Moffett@boeing.com>
Hi Kyle,
Kyle Moffett wrote:
> The Nios-II port appears to use no generic hardware capability for
> performing a CPU reset. Since all of the supported boards use the exact
> same code to perform a jump-to-flash it goes into __arch_restart().
>
> This means that Nios-II has a no-op __arch_emergency_restart() function.
> If the CPU is in an invalid state then jump-to-FLASH probably won't
> work.
If the CPU state is stable enough to call __arch_emergency_restart(),
a jump to the reset address should be fine. In many implementations
the reset code is in on-chip ROM. If things get screwed up enough
to affect the code in on-chip ROM, it probably won't matter what
gets called. ;-)
Thomas, any thoughts?
Regards,
--Scott
next prev parent reply other threads:[~2011-03-09 0:13 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-07 17:37 [U-Boot] [PATCH 0/21] Generic cross-architecture system restart support Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 01/21] Define new system_restart() and emergency_restart() Kyle Moffett
2011-03-07 21:40 ` Mike Frysinger
2011-03-07 21:56 ` Moffett, Kyle D
2011-03-07 22:10 ` Mike Frysinger
2011-03-07 23:09 ` Graeme Russ
2011-03-08 2:45 ` Mike Frysinger
2011-03-13 19:24 ` Wolfgang Denk
2011-03-14 16:23 ` Moffett, Kyle D
2011-03-14 18:59 ` Wolfgang Denk
2011-03-14 19:52 ` Moffett, Kyle D
2011-03-14 20:38 ` Wolfgang Denk
2011-03-14 21:20 ` Moffett, Kyle D
2011-03-14 22:01 ` Wolfgang Denk
2011-03-21 11:43 ` Graeme Russ
2011-03-21 12:00 ` Wolfgang Denk
2011-03-22 12:05 ` Graeme Russ
2011-03-22 13:28 ` Wolfgang Denk
2011-03-23 0:19 ` Graeme Russ
2011-04-11 18:31 ` Wolfgang Denk
2011-03-07 17:37 ` [U-Boot] [PATCH 02/21] Replace do_reset() calls with {system, emergency}_restart() Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 03/21] arm: Call "panic()" instead of "hang()" for div-by-zero Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 04/21] arm: Replace unnecessary bad_mode() with panic() Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 05/21] arm: cpux9k2: Remove unnecessary XF_do_reset assignment Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 06/21] arm: Rename nonstandard board_reset() as at91_board_reset() Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 07/21] arm: Generic system restart support Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 08/21] avr32: " Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 09/21] blackfin: Replace "bfin_reset_or_hang()" with "panic()" Kyle Moffett
2011-03-07 21:44 ` Mike Frysinger
2011-03-07 17:37 ` [U-Boot] [PATCH 10/21] blackfin: Generic system restart support Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 11/21] i386: " Kyle Moffett
2011-03-07 21:54 ` Graeme Russ
2011-03-07 22:06 ` Moffett, Kyle D
2011-03-07 22:26 ` Graeme Russ
2011-03-07 22:57 ` Moffett, Kyle D
2011-03-07 23:06 ` Graeme Russ
2011-03-07 17:37 ` [U-Boot] [PATCH 12/21] m68k: " Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 13/21] microblaze: " Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 14/21] mips: " Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 15/21] nios2: " Kyle Moffett
2011-03-09 0:13 ` Scott McNutt [this message]
2011-03-09 0:42 ` Moffett, Kyle D
2011-03-09 1:33 ` Scott McNutt
2011-03-07 17:37 ` [U-Boot] [PATCH 16/21] powerpc: " Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 17/21] sh: Unify duplicate reset code Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 18/21] sh: Generic system restart support Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 19/21] sparc: Unify duplicate reset code Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 20/21] sparc: Generic system restart support Kyle Moffett
2011-03-07 17:37 ` [U-Boot] [PATCH 21/21] Remove legacy do_reset() function Kyle Moffett
2011-03-07 21:55 ` Graeme Russ
2011-03-07 23:00 ` Moffett, Kyle D
2011-03-07 23:03 ` Graeme Russ
2011-03-07 21:44 ` [U-Boot] [PATCH 0/21] Generic cross-architecture system restart support Graeme Russ
2011-03-13 19:16 ` Wolfgang Denk
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