Randall Spangler c2933c122a Bus fault handler doesn't need to be naked ...

When it was a naked call, if it doesn't jump somewhere, it just
falls through to whatever code happens to be next.  Which happened to
re-enable bus faults - meaning that only the first fault was being
ignored.  That's a problem for flash protection on STM32, where writes
to potentially-locked key registers come in pairs.

BUG=chrome-os-partner:19564
BRANCH=spring
TEST=manual, on pit:

  1. Hack in a igbusfault console command to call ignore_bus_fault()
  2. igbusfault 1
  3. ww 0x40023c0c 0xdeadbeef -> no fault
  4. ww 0x40023c0c 0xdeadbeef -> still no fault
  5. igbusfault 0
  6. ww 0x40023c0c 0xdeadbeef -> exception and reboot

Change-Id: I5cf74b06a76ebf0176a2905924be87b3d1c825ce
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/55572
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

2013-05-17 17:02:36 -07:00

..

include

Sqrt function for Cortex-M

2012-02-16 05:43:29 +08:00

atomic.h

Move externs from .lds file into a header file

2012-04-19 14:29:07 -07:00

build.mk

Prevent GCC4.7 from generating unaligned memory accesses

2012-11-27 15:55:15 -08:00

cpu.c

Clean up core routines - cpu, task, watchdog

2012-10-29 12:02:41 -07:00

cpu.h

cpu: Enable reporting of faults

2012-07-02 15:02:07 -07:00

ec.lds.S

Split out power button code from switch.c

2013-04-25 17:03:18 -07:00

init.S

Reformat init.S to use tabs not spaces

2012-12-17 14:24:39 -08:00

panic.c

Bus fault handler doesn't need to be naked

2013-05-17 17:02:36 -07:00

switch.S

Enable FPU support for Link EC

2012-10-02 10:52:54 -07:00

task.c

Improved the BUILD_ASSERT macro to work outside of functions.

2013-04-29 11:05:08 -07:00

timer.c

Fix potential deadlock in udelay()

2012-11-29 12:02:28 -08:00

watchdog.c

Watchdog is reloaded by HOOK_TICK, not its own task

2012-10-30 15:33:24 -07:00