ARM: sirf: add two debug ports for CSRatlas7 SoC

this patch adds UART0 and UART1 as LLUART port, as the new Atlas7
registers layout are different, it also refines some names of old
hard-coded MARCOs and uses CONFIG_DEBUG_UART_PHYS/DEBUG_UART_VIRT
to define different base addresses for multiple ports.

Signed-off-by: Guo Zeng <Guo.Zeng@csr.com>
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 46 insertions, 18 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index e0a3cc9cb1a7..0c2e6cd399b6 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -916,10 +916,29 @@ choice
         config DEBUG_SIRFPRIMA2_UART1
                 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
                 depends on ARCH_PRIMA2
+                select DEBUG_SIRFSOC_UART
                 help
                   Say Y here if you want the debug print routines to direct
                   their output to the uart1 port on SiRFprimaII devices.
 
+        config DEBUG_SIRFATLAS7_UART0
+                bool "Kernel low-level debugging messages via SiRFatlas7 UART0"
+                depends on ARCH_ATLAS7
+                select DEBUG_SIRFSOC_UART
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the uart0 port on SiRFATLAS7 devices.The uart0
+                  is used on SiRFATLAS7 as a extra debug port.sometimes an extra
+                  debug port can be very useful.
+
+        config DEBUG_SIRFATLAS7_UART1
+                bool "Kernel low-level debugging messages via SiRFatlas7 UART1"
+                depends on ARCH_ATLAS7
+                select DEBUG_SIRFSOC_UART
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the uart1 port on SiRFATLAS7 devices.
+
         config STIH41X_DEBUG_ASC2
                 bool "Use StiH415/416 ASC2 UART for low-level debug"
                 depends on ARCH_STI
@@ -1154,6 +1173,10 @@ config DEBUG_STI_UART
         bool
         depends on ARCH_STI
 
+config DEBUG_SIRFSOC_UART
+        bool
+        depends on ARCH_SIRF
+
 config DEBUG_LL_INCLUDE
         string
         default "debug/sa1100.S" if DEBUG_SA1100
@@ -1188,7 +1211,7 @@ config DEBUG_LL_INCLUDE
         default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
         default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
         default "debug/s5pv210.S" if DEBUG_S5PV210_UART
-        default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1
+        default "debug/sirf.S" if DEBUG_SIRFSOC_UART
         default "debug/sti.S" if DEBUG_STI_UART
         default "debug/tegra.S" if DEBUG_TEGRA_UART
         default "debug/ux500.S" if DEBUG_UX500_UART
@@ -1244,6 +1267,8 @@ config DEBUG_UART_PHYS
         default 0x11009000 if DEBUG_MT8135_UART3
         default 0x16000000 if ARCH_INTEGRATOR
         default 0x18000300 if DEBUG_BCM_5301X
+        default 0x18010000 if DEBUG_SIRFATLAS7_UART0
+        default 0x18020000 if DEBUG_SIRFATLAS7_UART1
         default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
         default 0x20060000 if DEBUG_RK29_UART0
         default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
@@ -1270,6 +1295,7 @@ config DEBUG_UART_PHYS
         default 0x808c0000 if ARCH_EP93XX
         default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
         default 0xa9a00000 if DEBUG_MSM_UART
+        default 0xb0060000 if DEBUG_SIRFPRIMA2_UART1
         default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
         default 0xc0013000 if DEBUG_U300_UART
         default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
@@ -1313,7 +1339,8 @@ config DEBUG_UART_PHYS
                 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
                 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
                 DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
-                DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART
+                DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
+                DEBUG_SIRFSOC_UART
 
 config DEBUG_UART_VIRT
         hex "Virtual base address of debug UART"
@@ -1370,8 +1397,11 @@ config DEBUG_UART_VIRT
         default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
         default 0xfeb31000 if DEBUG_KEYSTONE_UART1
         default 0xfec02000 if DEBUG_SOCFPGA_UART
+        default 0xfec10000 if DEBUG_SIRFATLAS7_UART0
         default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
         default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
+        default 0xfec20000 if DEBUG_SIRFATLAS7_UART1
+        default 0xfec60000 if DEBUG_SIRFPRIMA2_UART1
         default 0xfec90000 if DEBUG_RK32_UART2
         default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
         default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
@@ -1391,7 +1421,7 @@ config DEBUG_UART_VIRT
         depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
                 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
                 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
-                DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART
+                DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_SIRFSOC_UART
 
 config DEBUG_UART_8250_SHIFT
         int "Register offset shift for the 8250 debug UART"
diff --git a/arch/arm/include/debug/sirf.S b/arch/arm/include/debug/sirf.S
index 006ec9fb20c6..630f231f2f37 100644
--- a/arch/arm/include/debug/sirf.S
+++ b/arch/arm/include/debug/sirf.S
@@ -6,35 +6,33 @@
  * Licensed under GPLv2 or later.
  */
 
-#if defined(CONFIG_DEBUG_SIRFPRIMA2_UART1)
-#define SIRFSOC_UART1_PA_BASE          0xb0060000
-#else
-#define SIRFSOC_UART1_PA_BASE          0
-#endif
+#define SIRF_LLUART_TXFIFO_STATUS       0x0114
+#define SIRF_LLUART_TXFIFO_DATA 0x0118
 
-#define SIRFSOC_UART1_VA_BASE           0xFEC60000
+#define SIRF_LLUART_TXFIFO_FULL                       (1 << 5)
 
-#define SIRFSOC_UART_TXFIFO_STATUS      0x0114
-#define SIRFSOC_UART_TXFIFO_DATA        0x0118
+#ifdef CONFIG_DEBUG_SIRFATLAS7_UART0
+#define SIRF_LLUART_TXFIFO_EMPTY                        (1 << 8)
+#else
+#define SIRF_LLUART_TXFIFO_EMPTY                        (1 << 6)
+#endif
 
-#define SIRFSOC_UART1_TXFIFO_FULL                       (1 << 5)
-#define SIRFSOC_UART1_TXFIFO_EMPTY                      (1 << 6)
 
         .macro  addruart, rp, rv, tmp
-        ldr     \rp, =SIRFSOC_UART1_PA_BASE             @ physical
-        ldr     \rv, =SIRFSOC_UART1_VA_BASE             @ virtual
+        ldr     \rp, =CONFIG_DEBUG_UART_PHYS            @ physical
+        ldr     \rv, =CONFIG_DEBUG_UART_VIRT            @ virtual
         .endm
 
         .macro  senduart,rd,rx
-        str     \rd, [\rx, #SIRFSOC_UART_TXFIFO_DATA]
+        str     \rd, [\rx, #SIRF_LLUART_TXFIFO_DATA]
         .endm
 
         .macro  busyuart,rd,rx
         .endm
 
         .macro  waituart,rd,rx
-1001:   ldr     \rd, [\rx, #SIRFSOC_UART_TXFIFO_STATUS]
-        tst     \rd, #SIRFSOC_UART1_TXFIFO_EMPTY
+1001:   ldr     \rd, [\rx, #SIRF_LLUART_TXFIFO_STATUS]
+        tst     \rd, #SIRF_LLUART_TXFIFO_EMPTY
         beq     1001b
         .endm