xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Blackfin arch: allow people to select the feature that is unavailable to the kernel

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- allow people to select the feature that is unavailable to the kernel: NMI, JTAG, or CYCLES.
 - change default NMI handler to simply dump hardware trace buffer.
 - remove default NMI handler completely as calling into kernel code is not safe
   move example handler to wiki so people dont haphazardly copy and paste this stuff thinking its safe

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
This commit is contained in:
Mike Frysinger
2007-08-05 17:03:59 +08:00
committed by Bryan Wu
parent 0174dd59bb
commit f0b5d12f2b
11 changed files with 107 additions and 45 deletions
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28
arch/blackfin/mach-common/interrupt.S
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@@ -177,27 +177,15 @@ ENTRY(_evt_ivhw)
jump .Lcommon_restore_context;
#endif
/* interrupt routine for evt2 - 2. This is NMI. */
ENTRY(_evt_evt2)
SAVE_CONTEXT
#ifdef CONFIG_FRAME_POINTER
fp = 0;
#endif
#if ANOMALY_05000283
cc = r7 == r7;
p5.h = 0xffc0;
p5.l = 0x0014;
if cc jump 1f;
r7.l = W[p5];
1:
#endif
r0 = IRQ_NMI;
r1 = sp;
SP += -12;
call _asm_do_IRQ;
SP += 12;
RESTORE_CONTEXT
/* Interrupt routine for evt2 (NMI).
* We don't actually use this, so just return.
* For inner circle type details, please see:
* http://docs.blackfin.uclinux.org/doku.php?id=linux:nmi
*/
ENTRY(_evt_nmi)
.weak _evt_nmi
rtn;
ENDPROC(_evt_nmi)
/* interrupt routine for core timer - 6 */
ENTRY(_evt_timer)