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>

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index bf15e7b4cd3d..654bba5cf6b4 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -240,6 +240,33 @@ config PPC_OF_PLATFORM_PCI
 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
         def_bool y
 
+config PPC_ADV_DEBUG_REGS
+        bool
+        depends on 40x || BOOKE
+        default y
+
+config PPC_ADV_DEBUG_IACS
+        int
+        depends on PPC_ADV_DEBUG_REGS
+        default 4 if 44x
+        default 2
+
+config PPC_ADV_DEBUG_DACS
+        int
+        depends on PPC_ADV_DEBUG_REGS
+        default 2
+
+config PPC_ADV_DEBUG_DVCS
+        int
+        depends on PPC_ADV_DEBUG_REGS
+        default 2 if 44x
+        default 0
+
+config PPC_ADV_DEBUG_DAC_RANGE
+        bool
+        depends on PPC_ADV_DEBUG_REGS && 44x
+        default y
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"