Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...

[pandora-kernel.git] / arch / powerpc / Kconfig.debug

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 6a79fe4..a7d24e6 100644 (file)
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -118,7 +118,6 @@ config XMON_DISASSEMBLY
 
 config IRQSTACKS
        bool "Use separate kernel stacks when processing interrupts"
-       depends on PPC64
        help
          If you say Y here the kernel will use separate kernel stacks
          for handling hard and soft interrupts.  This can help avoid
@@ -151,6 +150,16 @@ config BOOTX_TEXT
 
 config PPC_EARLY_DEBUG
        bool "Early debugging (dangerous)"
+       # PPC_EARLY_DEBUG on 440 leaves AS=1 mappings above the TLB high water
+       # mark, which doesn't work with current 440 KVM.
+       depends on !KVM
+       help
+         Say Y to enable some early debugging facilities that may be available
+         for your processor/board combination. Those facilities are hacks
+         intended to debug problems early during boot, this should not be
+         enabled in a production kernel.
+         Note that enabling this will also cause the kernel default log level
+         to be pushed to max automatically very early during boot
 
 choice
        prompt "Early debugging console"
@@ -218,7 +227,16 @@ config PPC_EARLY_DEBUG_44x
        depends on 44x
        help
          Select this to enable early debugging for IBM 44x chips via the
-         inbuilt serial port.
+         inbuilt serial port.  If you enable this, ensure you set
+          PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
+
+config PPC_EARLY_DEBUG_40x
+       bool "Early serial debugging for IBM/AMCC 40x CPUs"
+       depends on 40x
+       help
+         Select this to enable early debugging for IBM 40x chips via the
+         inbuilt serial port. This works on chips with a 16550 compatible
+         UART. Xilinx chips with uartlite cannot use this option.
 
 config PPC_EARLY_DEBUG_CPM
        bool "Early serial debugging for Freescale CPM-based serial ports"
@@ -235,17 +253,25 @@ config PPC_EARLY_DEBUG_44x_PHYSLOW
        hex "Low 32 bits of early debug UART physical address"
        depends on PPC_EARLY_DEBUG_44x
        default "0x40000200"
+       help
+         You probably want 0x40000200 for ebony boards and
+          0x40000300 for taishan
 
 config PPC_EARLY_DEBUG_44x_PHYSHIGH
        hex "EPRN of early debug UART physical address"
        depends on PPC_EARLY_DEBUG_44x
        default "0x1"
 
+config PPC_EARLY_DEBUG_40x_PHYSADDR
+       hex "Early debug UART physical address"
+       depends on PPC_EARLY_DEBUG_40x
+       default "0xef600300"
+
 config PPC_EARLY_DEBUG_CPM_ADDR
        hex "CPM UART early debug transmit descriptor address"
        depends on PPC_EARLY_DEBUG_CPM
        default "0xfa202008" if PPC_EP88XC
-       default "0xf0000008" if CPM2
+       default "0xf0001ff8" if CPM2
        default "0xff002008" if CPM1
        help
          This specifies the address of the transmit descriptor