ARM: 7860/1: debug: msm: Add DEBUG_LL support for ARCH_MSM8974

Add debug uart support for MSM8974. This patch adds a Kconfig
entry and the base address for the debug uart.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 8e9665d..a8f305b 100644 (file)
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -357,6 +357,15 @@ choice
                  Say Y here if you want the debug print routines to direct
                  their output to the serial port on MSM 8960 devices.
 
+       config DEBUG_MSM8974_UART
+               bool "Kernel low-level debugging messages via MSM 8974 UART"
+               depends on ARCH_MSM8974
+               select MSM_HAS_DEBUG_UART_HS
+               select DEBUG_MSM_UART
+               help
+                 Say Y here if you want the debug print routines to direct
+                 their output to the serial port on MSM 8974 devices.
+
        config DEBUG_MVEBU_UART
                bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
                depends on ARCH_MVEBU

diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S
index 9166e1b..9d653d4 100644 (file)
--- a/arch/arm/include/debug/msm.S
+++ b/arch/arm/include/debug/msm.S
@@ -46,6 +46,11 @@
 #define MSM_DEBUG_UART_PHYS    0x16440000
 #endif
 
+#ifdef CONFIG_DEBUG_MSM8974_UART
+#define MSM_DEBUG_UART_BASE    0xFA71E000
+#define MSM_DEBUG_UART_PHYS    0xF991E000
+#endif
+
        .macro  addruart, rp, rv, tmp
 #ifdef MSM_DEBUG_UART_PHYS
        ldr     \rp, =MSM_DEBUG_UART_PHYS