arm: vt8500: Convert debug-macro.S to be multiplatform friendly

This patch moves debug-macro.S from arm/mach-vt8500/include/mach to
arm/include/debug/vt8500.S to provide multiplatform support.

Minor style changes in code for readability.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>

2 files changed, 23 insertions, 9 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 661030d6bc6c..bbb0a670cd1a 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -412,6 +412,13 @@ choice
                   of the tiles using the RS1 memory map, including all new A-class
                   core tiles, FPGA-based SMMs and software models.
 
+        config DEBUG_VT8500_UART0
+                bool "Use UART0 on VIA/Wondermedia SoCs"
+                depends on ARCH_VT8500
+                help
+                  This option selects UART0 on VIA/Wondermedia System-on-a-chip
+                  devices, including VT8500, WM8505, WM8650 and WM8850.
+
         config DEBUG_LL_UART_NONE
                 bool "No low-level debugging UART"
                 depends on !ARCH_MULTIPLATFORM
@@ -506,6 +513,7 @@ config DEBUG_LL_INCLUDE
         default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
         default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
                 DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1
+        default "debug/vt8500.S" if DEBUG_VT8500_UART0
         default "debug/tegra.S" if DEBUG_TEGRA_UART
         default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
         default "mach/debug-macro.S"
diff --git a/arch/arm/mach-vt8500/include/mach/debug-macro.S b/arch/arm/include/debug/vt8500.S
index ca292f29d4a3..0e0ca0869da7 100644
--- a/arch/arm/mach-vt8500/include/mach/debug-macro.S
+++ b/arch/arm/include/debug/vt8500.S
@@ -1,20 +1,24 @@
-/*
- * arch/arm/mach-vt8500/include/mach/debug-macro.S
+/* 
+ * Debugging macro include header
  *
  *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * Debugging macro include header
+ *    Moved from arch/arm/mach-vt8500/include/mach/debug-macro.S
+ *    Minor changes for readability.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
- *
-*/
+ */
+
+#define DEBUG_LL_PHYS_BASE              0xD8000000
+#define DEBUG_LL_VIRT_BASE              0xF8000000
+#define DEBUG_LL_UART_OFFSET            0x00200000
 
+#if defined(CONFIG_DEBUG_VT8500_UART0)
         .macro  addruart, rp, rv, tmp
-        mov     \rp,      #0x00200000
-        orr     \rv, \rp, #0xf8000000
-        orr     \rp, \rp, #0xd8000000
+        mov     \rp,      #DEBUG_LL_UART_OFFSET
+        orr     \rv, \rp, #DEBUG_LL_VIRT_BASE
+        orr     \rp, \rp, #DEBUG_LL_PHYS_BASE
         .endm
 
         .macro  senduart,rd,rx
@@ -29,3 +33,5 @@
 
         .macro  waituart,rd,rx
         .endm
+
+#endif