powerpc/booke: Introduce new CONFIG options for advanced debug registers
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>
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 7b816da..9be77e3 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -258,7 +258,7 @@
return;
/* Clear the DAC and struct entries. One shot trigger */
-#if defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~(DBSR_DAC1R | DBSR_DAC1W
| DBCR0_IDM));
#endif
@@ -284,7 +284,7 @@
return ppc_md.set_dabr(dabr);
/* XXX should we have a CPU_FTR_HAS_DABR ? */
-#if defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
mtspr(SPRN_DAC1, dabr);
#elif defined(CONFIG_PPC_BOOK3S)
mtspr(SPRN_DABR, dabr);
@@ -371,7 +371,7 @@
#endif /* CONFIG_SMP */
-#if defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
/* If new thread DAC (HW breakpoint) is the same then leave it */
if (new->thread.dabr)
set_dabr(new->thread.dabr);
@@ -514,7 +514,7 @@
printk(" CR: %08lx XER: %08lx\n", regs->ccr, regs->xer);
trap = TRAP(regs);
if (trap == 0x300 || trap == 0x600)
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
printk("DEAR: "REG", ESR: "REG"\n", regs->dar, regs->dsisr);
#else
printk("DAR: "REG", DSISR: "REG"\n", regs->dar, regs->dsisr);
@@ -560,7 +560,7 @@
current->thread.dabr = 0;
set_dabr(0);
-#if defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
current->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W);
#endif
}