Commit graph

14 commits

Author SHA1 Message Date
Grzegorz Bernacki
15ee4734e4 [PPC440SPe] Convert machine check exceptions handling
Convert using fixup mechanism to suppressing MCK for the duration of config
read/write transaction: while fixups work fine with the case of a precise
exception, we identified a major drawback with this approach when there's
an imprecise case. In this scenario there is the following race condition:
the fixup is (by design) set to catch the instruction following the one
actually causing the exception; if an interrupt (e.g. decrementer) happens
between those two instructions, the ISR code is executed before the fixup
handler the machine check is no longer protected by the fixup handler as it
appears as within the ISR code. In consequence the fixup approach is being
phased out and replaced with explicit suppressing of MCK during a PCIe
config read/write cycle.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
2007-09-07 17:46:18 +02:00
Stefan Roese
3b3bff4cbf Merge with git://www.denx.de/git/u-boot.git 2007-08-14 16:36:29 +02:00
Stefan Roese
9ca8d79de0 ppc4xx: Code cleanup
Signed-off-by: Stefan Roese <sr@denx.de>
2007-08-02 08:33:56 +02:00
Grzegorz Bernacki
c924098122 [ppc440SPe] Graceful recovery from machine check during PCIe configuration
During config transactions on the PCIe bus an attempt to scan for a
non-existent device can lead to a machine check exception with certain
peripheral devices. In order to avoid crashing in such scenarios the
instrumented versions of the config cycle read routines are introduced, so
the exceptions fixups framework can gracefully recover.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>
2007-08-02 08:25:27 +02:00
Stefan Roese
27a528fb41 ppc4xx: Only print ECC related info when the error bis are set
Signed-off-by: Stefan Roese <sr@denx.de>
2007-07-30 11:04:57 +02:00
Jon Loeliger
3a1ed1e1f9 cpu/[7a-ln-z]*: Remove obsolete references to CONFIG_COMMANDS
Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-09 18:57:22 -05:00
Wolfgang Denk
52b8704d02 Fix a few file permission problems.
Signed-off-by: Wolfgang Denk <wd@denx.de>
2007-07-04 00:43:53 +02:00
Jon Loeliger
737184114e cpu/ non-mpc*: Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).
This is a compatibility step that allows both the older form
and the new form to co-exist for a while until the older can
be removed entirely.

All transformations are of the form:
Before:
    #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT)
After:
    #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT)

Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-04 00:34:13 +02:00
Niklaus Giger
a1bd6200ec ppc4xx: PPC440EPx Emit DDR0 registers on machine check interrupt
This patch prints the DDR status registers upon machine check
interrupt on the 440EPx/GRx. This can be useful especially when
ECC support is enabled.

I added some small changes to the original patch from Niklaus to
make it compile clean.

Signed-off-by: Niklaus Giger <niklaus.giger@nestal.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2007-06-25 17:03:13 +02:00
Wolfgang Denk
83b4cfa3d6 Coding style cleanup. Refresh CHANGELOG. 2007-06-20 18:14:24 +02:00
Grzegorz Bernacki
efa35cf12d ppc4xx: Clean up 440 exceptions handling
- Introduced dedicated switches for building 440 and 405 images required
  for 440-specific machine instructions like 'rfmci' etc.

- Exception vectors moved to the proper location (_start moved away from
  the critical exception handler space, which it occupied)

- CriticalInput now serviced (with default handler)

- MachineCheck properly serviced (added a dedicated handler and return
  subroutine)

- Overall cleanup of exceptions declared with STD_EXCEPTION macro (unused,
  unhandled and those not relevant for 4xx were eliminated)

- Eliminated Linux leftovers, removed dead code

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2007-06-15 11:19:28 +02:00
wdenk
63e73c9a8e * Patches by Reinhard Meyer, 14 Feb 2004:
- update board/emk tree; use common flash driver
  - Corrected tested bits in machine check exception in cpu/mpc5xxx/traps.c
    [adapted for other PPC CPUs -- wd]
  - Added support for the M48T08 on the EVAL5200 board in rtc/mk48t59.c

* Patch by Jon Diekema, 13 Feb 2004:
  Call show_boot_progress() whenever POST "FAILED" is printed.

* Patch by Nishant Kamat, 13 Feb 2004:
  Add support for TI OMAP1610 H2 Board
  Fixes for cpu/arm926ejs/interrupt.c
       (based on Richard Woodruff's patch for arm925, 16 Oct 03)
  Fix for a timer bug in OMAP1610 Innovator
  Add support for CS0 (ROM)/CS3 (Flash) boot in OMAP1610 Innovator and H2

* Patches by Stephan Linz, 12 Feb 2004:
  - add support for NIOS timer with variable period preload counter value
  - prepare POST framework support for NIOS targets

* Patch by Denis Peter, 11 Feb 2004:
  add POST support for the MIP405 board
2004-02-23 22:22:28 +00:00
wdenk
8bde7f776c * Code cleanup:
- remove trailing white space, trailing empty lines, C++ comments, etc.
  - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)

* Patches by Kenneth Johansson, 25 Jun 2003:
  - major rework of command structure
    (work done mostly by Michal Cendrowski and Joakim Kristiansen)
2003-06-27 21:31:46 +00:00
wdenk
affae2bff8 Initial revision 2002-08-17 09:36:01 +00:00