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-rw-r--r--arch/arm/mach-davinci/include/mach/debug-macro.S60
1 files changed, 46 insertions, 14 deletions
diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S
index 3cd93a801d9b..9f1befc5ac38 100644
--- a/arch/arm/mach-davinci/include/mach/debug-macro.S
+++ b/arch/arm/mach-davinci/include/mach/debug-macro.S
@@ -17,22 +17,54 @@
*/
#include <linux/serial_reg.h>
+
+#include <asm/memory.h>
+
+#include <mach/serial.h>
+
#define UART_SHIFT 2
- .macro addruart, rx, tmp
- mrc p15, 0, \rx, c1, c0
- tst \rx, #1 @ MMU enabled?
- moveq \rx, #0x01000000 @ physical base address
- movne \rx, #0xfe000000 @ virtual base
-#if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
-#error Cannot enable DaVinci and DA8XX platforms concurrently
-#elif defined(CONFIG_MACH_DAVINCI_DA830_EVM) || \
- defined(CONFIG_MACH_DAVINCI_DA850_EVM)
- orr \rx, \rx, #0x00d00000 @ physical base address
- orr \rx, \rx, #0x0000d000 @ of UART 2
-#else
- orr \rx, \rx, #0x00c20000 @ UART 0
-#endif
+ .pushsection .data
+davinci_uart_phys: .word 0
+davinci_uart_virt: .word 0
+ .popsection
+
+ .macro addruart, rp, rv
+
+ /* Use davinci_uart_phys/virt if already configured */
+10: mrc p15, 0, \rp, c1, c0
+ tst \rp, #1 @ MMU enabled?
+ ldreq \rp, =__virt_to_phys(davinci_uart_phys)
+ ldrne \rp, =davinci_uart_phys
+ add \rv, \rp, #4 @ davinci_uart_virt
+ ldr \rp, [\rp, #0]
+ ldr \rv, [\rv, #0]
+ cmp \rp, #0 @ is port configured?
+ cmpne \rv, #0
+ bne 99f @ already configured
+
+ /* Check the debug UART address set in uncompress.h */
+ mrc p15, 0, \rp, c1, c0
+ tst \rp, #1 @ MMU enabled?
+
+ /* Copy uart phys address from decompressor uart info */
+ ldreq \rv, =__virt_to_phys(davinci_uart_phys)
+ ldrne \rv, =davinci_uart_phys
+ ldreq \rp, =DAVINCI_UART_INFO
+ ldrne \rp, =__phys_to_virt(DAVINCI_UART_INFO)
+ ldr \rp, [\rp, #0]
+ str \rp, [\rv]
+
+ /* Copy uart virt address from decompressor uart info */
+ ldreq \rv, =__virt_to_phys(davinci_uart_virt)
+ ldrne \rv, =davinci_uart_virt
+ ldreq \rp, =DAVINCI_UART_INFO
+ ldrne \rp, =__phys_to_virt(DAVINCI_UART_INFO)
+ ldr \rp, [\rp, #4]
+ str \rp, [\rv]
+
+ b 10b
+99:
.endm
.macro senduart,rd,rx