diff options
| author | Robin Getz <robin.getz@analog.com> | 2009-12-21 17:02:48 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-01-17 09:17:27 -0500 |
| commit | 03642aeee0d51660c35c9dbdde78882eb3efb350 (patch) | |
| tree | 824df42bdcb0f7b08bcb791b76a236efe0a59d50 /cpu | |
| parent | b6db2834407d49ec48ac8e9281fdd704d5ee3eba (diff) | |
Blackfin: handle anomaly 05000257
Need to reload the loop counters to keep from corrupting hardware loops.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/blackfin/interrupt.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/cpu/blackfin/interrupt.S b/cpu/blackfin/interrupt.S index 71e0fc6708..8c7a262892 100644 --- a/cpu/blackfin/interrupt.S +++ b/cpu/blackfin/interrupt.S @@ -1,7 +1,7 @@ /* * interrupt.S - trampoline default exceptions/interrupts to C handlers * - * Copyright (c) 2005-2007 Analog Devices Inc. + * Copyright (c) 2005-2009 Analog Devices Inc. * Licensed under the GPL-2 or later. */ @@ -17,10 +17,19 @@ ENTRY(_trap) sp.l = LO(L1_SRAM_SCRATCH_END - 20); sp.h = HI(L1_SRAM_SCRATCH_END - 20); SAVE_ALL_SYS + r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ sp += -12; call _trap_c; sp += 12; + +#if ANOMALY_05000257 + R7 = LC0; + LC0 = R7; + R7 = LC1; + LC1 = R7; +#endif + RESTORE_ALL_SYS sp = CONFIG_BFIN_SCRATCH_REG; rtx; |