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powerpc/booke: Introduce new CONFIG options for advanced debug registers

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powerpc/booke: Introduce new CONFIG options for advanced debug registers

From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

Introduce new config options to simplify the ifdefs pertaining to the
advanced debug registers for booke and 40x processors:

CONFIG_PPC_ADV_DEBUG_REGS - boolean: true for dac-based processors
CONFIG_PPC_ADV_DEBUG_IACS - number of IAC registers
CONFIG_PPC_ADV_DEBUG_DACS - number of DAC registers
CONFIG_PPC_ADV_DEBUG_DVCS - number of DVC registers
CONFIG_PPC_ADV_DEBUG_DAC_RANGE - DAC ranges supported

Beginning conservatively, since I only have the facilities to test 440
hardware.  I believe all 40x and booke platforms support at least 2 IAC
and 2 DAC registers.  For 440, 4 IAC and 2 DVC registers are enabled, as
well as the DAC ranges.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Acked-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Dave Kleikamp
2010-02-08 11:50:57 +00:00
committed by Benjamin Herrenschmidt
parent 789c299ca2
commit 172ae2e7f8
8 changed files with 50 additions and 27 deletions
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2
arch/powerpc/kernel/signal.c
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@ -147,7 +147,7 @@ static int do_signal_pending(sigset_t *oldset, struct pt_regs *regs)
*/
if (current->thread.dabr) {
set_dabr(current->thread.dabr);
#if defined(CONFIG_BOOKE)
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
mtspr(SPRN_DBCR0, current->thread.dbcr0);
#endif
}