12 files changed, 138 insertions, 99 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 0608c0ba94e6..e0d236d7ff73 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -255,6 +255,43 @@ choice
                   their output to the standard serial port on the RealView
                   PB1176 platform.
 
+        config DEBUG_MSM_UART1
+                bool "Kernel low-level debugging messages via MSM UART1"
+                depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the first serial port on MSM devices.
+
+        config DEBUG_MSM_UART2
+                bool "Kernel low-level debugging messages via MSM UART2"
+                depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the second serial port on MSM devices.
+
+        config DEBUG_MSM_UART3
+                bool "Kernel low-level debugging messages via MSM UART3"
+                depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the third serial port on MSM devices.
+
+        config DEBUG_MSM8660_UART
+                bool "Kernel low-level debugging messages via MSM 8660 UART"
+                depends on ARCH_MSM8X60
+                select MSM_HAS_DEBUG_UART_HS
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the serial port on MSM 8660 devices.
+
+        config DEBUG_MSM8960_UART
+                bool "Kernel low-level debugging messages via MSM 8960 UART"
+                depends on ARCH_MSM8960
+                select MSM_HAS_DEBUG_UART_HS
+                help
+                  Say Y here if you want the debug print routines to direct
+                  their output to the serial port on MSM 8960 devices.
+
 endchoice
 
 config EARLY_PRINTK
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index ebde97f5d5f0..000ddf0a4f33 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -13,7 +13,6 @@ config ARCH_MSM7X00A
         select CPU_V6
         select GPIO_MSM_V1
         select MSM_PROC_COMM
-        select HAS_MSM_DEBUG_UART_PHYS
 
 config ARCH_MSM7X30
         bool "MSM7x30"
@@ -25,7 +24,6 @@ config ARCH_MSM7X30
         select MSM_GPIOMUX
         select GPIO_MSM_V1
         select MSM_PROC_COMM
-        select HAS_MSM_DEBUG_UART_PHYS
 
 config ARCH_QSD8X50
         bool "QSD8X50"
@@ -37,7 +35,6 @@ config ARCH_QSD8X50
         select MSM_GPIOMUX
         select GPIO_MSM_V1
         select MSM_PROC_COMM
-        select HAS_MSM_DEBUG_UART_PHYS
 
 config ARCH_MSM8X60
         bool "MSM8X60"
@@ -63,6 +60,9 @@ config ARCH_MSM8960
 
 endchoice
 
+config MSM_HAS_DEBUG_UART_HS
+        bool
+
 config MSM_SOC_REV_A
         bool
 config  ARCH_MSM_SCORPIONMP
@@ -73,9 +73,6 @@ config  ARCH_MSM_ARM11
 config  ARCH_MSM_SCORPION
         bool
 
-config HAS_MSM_DEBUG_UART_PHYS
-        bool
-
 config  MSM_VIC
         bool
 
@@ -152,32 +149,6 @@ config MACH_MSM8960_RUMI3
 
 endmenu
 
-config MSM_DEBUG_UART
-        int
-        default 1 if MSM_DEBUG_UART1
-        default 2 if MSM_DEBUG_UART2
-        default 3 if MSM_DEBUG_UART3
-
-if HAS_MSM_DEBUG_UART_PHYS
-choice
-        prompt "Debug UART"
-
-        default MSM_DEBUG_UART_NONE
-
-        config MSM_DEBUG_UART_NONE
-                bool "None"
-
-        config MSM_DEBUG_UART1
-                bool "UART1"
-
-        config MSM_DEBUG_UART2
-                bool "UART2"
-
-        config MSM_DEBUG_UART3
-                bool "UART3"
-endchoice
-endif
-
 config MSM_SMD_PKG3
         bool
 
diff --git a/arch/arm/mach-msm/include/mach/debug-macro.S b/arch/arm/mach-msm/include/mach/debug-macro.S
index 2dc73ccddb11..3ffd8668c9a5 100644
--- a/arch/arm/mach-msm/include/mach/debug-macro.S
+++ b/arch/arm/mach-msm/include/mach/debug-macro.S
@@ -1,6 +1,7 @@
-/* arch/arm/mach-msm7200/include/mach/debug-macro.S
+/*
  *
  * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Author: Brian Swetland <swetland@google.com>
  *
  * This software is licensed under the terms of the GNU General Public
@@ -14,40 +15,52 @@
  *
  */
 
-
-
 #include <mach/hardware.h>
 #include <mach/msm_iomap.h>
 
-#if defined(CONFIG_HAS_MSM_DEBUG_UART_PHYS) && !defined(CONFIG_MSM_DEBUG_UART_NONE)
         .macro  addruart, rp, rv, tmp
+#ifdef MSM_DEBUG_UART_PHYS
         ldr     \rp, =MSM_DEBUG_UART_PHYS
         ldr     \rv, =MSM_DEBUG_UART_BASE
+#endif
         .endm
 
-        .macro  senduart,rd,rx
+        .macro  senduart, rd, rx
+#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
+        @ Write the 1 character to UARTDM_TF
+        str     \rd, [\rx, #0x70]
+#else
         teq     \rx, #0
         strne   \rd, [\rx, #0x0C]
+#endif
         .endm
 
-        .macro  waituart,rd,rx
+        .macro  waituart, rd, rx
+#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
+        @ check for TX_EMT in UARTDM_SR
+        ldr     \rd, [\rx, #0x08]
+        tst     \rd, #0x08
+        bne     1002f
+        @ wait for TXREADY in UARTDM_ISR
+1001:   ldr     \rd, [\rx, #0x14]
+        tst     \rd, #0x80
+        beq     1001b
+1002:
+        @ Clear TX_READY by writing to the UARTDM_CR register
+        mov     \rd, #0x300
+        str     \rd, [\rx, #0x10]
+        @ Write 0x1 to NCF register
+        mov     \rd, #0x1
+        str     \rd, [\rx, #0x40]
+        @ UARTDM reg. Read to induce delay
+        ldr     \rd, [\rx, #0x08]
+#else
         @ wait for TX_READY
 1001:   ldr     \rd, [\rx, #0x08]
         tst     \rd, #0x04
         beq     1001b
-        .endm
-#else
-        .macro  addruart, rp, rv, tmp
-        mov     \rv, #0xff000000
-        orr     \rv, \rv, #0x00f00000
-        .endm
-
-        .macro  senduart,rd,rx
-        .endm
-
-        .macro  waituart,rd,rx
-        .endm
 #endif
+        .endm
 
-        .macro  busyuart,rd,rx
+        .macro  busyuart, rd, rx
         .endm
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-7x00.h b/arch/arm/mach-msm/include/mach/msm_iomap-7x00.h
index 94fe9fe6feb3..8af46123dab6 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-7x00.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-7x00.h
@@ -78,18 +78,6 @@
 #define MSM_UART3_PHYS        0xA9C00000
 #define MSM_UART3_SIZE        SZ_4K
 
-#ifdef CONFIG_MSM_DEBUG_UART
-#define MSM_DEBUG_UART_BASE   0xE1000000
-#if CONFIG_MSM_DEBUG_UART == 1
-#define MSM_DEBUG_UART_PHYS   MSM_UART1_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 2
-#define MSM_DEBUG_UART_PHYS   MSM_UART2_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 3
-#define MSM_DEBUG_UART_PHYS   MSM_UART3_PHYS
-#endif
-#define MSM_DEBUG_UART_SIZE   SZ_4K
-#endif
-
 #define MSM_SDC1_PHYS         0xA0400000
 #define MSM_SDC1_SIZE         SZ_4K
 
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h b/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
index 37694442d1bd..198202c267c8 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
@@ -89,18 +89,6 @@
 #define MSM_UART3_PHYS        0xACC00000
 #define MSM_UART3_SIZE        SZ_4K
 
-#ifdef CONFIG_MSM_DEBUG_UART
-#define MSM_DEBUG_UART_BASE   0xE1000000
-#if CONFIG_MSM_DEBUG_UART == 1
-#define MSM_DEBUG_UART_PHYS   MSM_UART1_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 2
-#define MSM_DEBUG_UART_PHYS   MSM_UART2_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 3
-#define MSM_DEBUG_UART_PHYS   MSM_UART3_PHYS
-#endif
-#define MSM_DEBUG_UART_SIZE   SZ_4K
-#endif
-
 #define MSM_MDC_BASE          IOMEM(0xE0200000)
 #define MSM_MDC_PHYS          0xAA500000
 #define MSM_MDC_SIZE          SZ_1M
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-8960.h b/arch/arm/mach-msm/include/mach/msm_iomap-8960.h
index 3c9d9602a318..800b55767e6b 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-8960.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-8960.h
@@ -45,4 +45,9 @@
 #define MSM8960_TMR0_PHYS       0x0208A000
 #define MSM8960_TMR0_SIZE       SZ_4K
 
+#ifdef CONFIG_DEBUG_MSM8960_UART
+#define MSM_DEBUG_UART_BASE     0xE1040000
+#define MSM_DEBUG_UART_PHYS     0x16440000
+#endif
+
 #endif
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h b/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
index d67cd73316f4..0faa894729b7 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
@@ -83,18 +83,6 @@
 #define MSM_UART3_PHYS        0xA9C00000
 #define MSM_UART3_SIZE        SZ_4K
 
-#ifdef CONFIG_MSM_DEBUG_UART
-#define MSM_DEBUG_UART_BASE   0xE1000000
-#if CONFIG_MSM_DEBUG_UART == 1
-#define MSM_DEBUG_UART_PHYS   MSM_UART1_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 2
-#define MSM_DEBUG_UART_PHYS   MSM_UART2_PHYS
-#elif CONFIG_MSM_DEBUG_UART == 3
-#define MSM_DEBUG_UART_PHYS   MSM_UART3_PHYS
-#endif
-#define MSM_DEBUG_UART_SIZE   SZ_4K
-#endif
-
 #define MSM_MDC_BASE          IOMEM(0xE0200000)
 #define MSM_MDC_PHYS          0xAA500000
 #define MSM_MDC_SIZE          SZ_1M
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-8x60.h b/arch/arm/mach-msm/include/mach/msm_iomap-8x60.h
index 3b19b8f244b8..54e12caa8d86 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-8x60.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-8x60.h
@@ -62,4 +62,9 @@
 #define MSM8X60_TMR0_PHYS       0x02040000
 #define MSM8X60_TMR0_SIZE       SZ_4K
 
+#ifdef CONFIG_DEBUG_MSM8660_UART
+#define MSM_DEBUG_UART_BASE     0xE1040000
+#define MSM_DEBUG_UART_PHYS     0x19C40000
+#endif
+
 #endif
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap.h b/arch/arm/mach-msm/include/mach/msm_iomap.h
index 4ded15238b60..90682f4599d3 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap.h
@@ -55,6 +55,18 @@
 
 #include "msm_iomap-8960.h"
 
+#define MSM_DEBUG_UART_SIZE     SZ_4K
+#if defined(CONFIG_DEBUG_MSM_UART1)
+#define MSM_DEBUG_UART_BASE     0xE1000000
+#define MSM_DEBUG_UART_PHYS     MSM_UART1_PHYS
+#elif defined(CONFIG_DEBUG_MSM_UART2)
+#define MSM_DEBUG_UART_BASE     0xE1000000
+#define MSM_DEBUG_UART_PHYS     MSM_UART2_PHYS
+#elif defined(CONFIG_DEBUG_MSM_UART3)
+#define MSM_DEBUG_UART_BASE     0xE1000000
+#define MSM_DEBUG_UART_PHYS     MSM_UART3_PHYS
+#endif
+
 /* Virtual addresses shared across all MSM targets. */
 #define MSM_CSR_BASE            IOMEM(0xE0001000)
 #define MSM_QGIC_DIST_BASE      IOMEM(0xF0000000)
diff --git a/arch/arm/mach-msm/include/mach/uncompress.h b/arch/arm/mach-msm/include/mach/uncompress.h
index d94292c29d8e..169a84007456 100644
--- a/arch/arm/mach-msm/include/mach/uncompress.h
+++ b/arch/arm/mach-msm/include/mach/uncompress.h
@@ -1,6 +1,6 @@
-/* arch/arm/mach-msm/include/mach/uncompress.h
- *
+/*
  * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -14,17 +14,40 @@
  */
 
 #ifndef __ASM_ARCH_MSM_UNCOMPRESS_H
+#define __ASM_ARCH_MSM_UNCOMPRESS_H
+
+#include <asm/processor.h>
+#include <mach/msm_iomap.h>
+
+#define UART_CSR      (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08))
+#define UART_TF       (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x0c))
 
-#include "hardware.h"
-#include "linux/io.h"
-#include "mach/msm_iomap.h"
+#define UART_DM_SR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08)))
+#define UART_DM_CR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x10)))
+#define UART_DM_ISR   (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x14)))
+#define UART_DM_NCHAR (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x40)))
+#define UART_DM_TF    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x70)))
 
 static void putc(int c)
 {
 #if defined(MSM_DEBUG_UART_PHYS)
-        unsigned base = MSM_DEBUG_UART_PHYS;
-        while (!(readl(base + 0x08) & 0x04)) ;
-        writel(c, base + 0x0c);
+#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
+        /*
+         * Wait for TX_READY to be set; but skip it if we have a
+         * TX underrun.
+         */
+        if (UART_DM_SR & 0x08)
+                while (!(UART_DM_ISR & 0x80))
+                        cpu_relax();
+
+        UART_DM_CR = 0x300;
+        UART_DM_NCHAR = 0x1;
+        UART_DM_TF = c;
+#else
+        while (!(UART_CSR & 0x04))
+                cpu_relax();
+        UART_TF = c;
+#endif
 #endif
 }
 
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 8759ecf7454f..578b04e42deb 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -47,7 +47,8 @@ static struct map_desc msm_io_desc[] __initdata = {
         MSM_CHIP_DEVICE(GPIO1, MSM7X00),
         MSM_CHIP_DEVICE(GPIO2, MSM7X00),
         MSM_DEVICE(CLK_CTL),
-#ifdef CONFIG_MSM_DEBUG_UART
+#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
+        defined(CONFIG_DEBUG_MSM_UART3)
         MSM_DEVICE(DEBUG_UART),
 #endif
 #ifdef CONFIG_ARCH_MSM7X30
@@ -84,7 +85,8 @@ static struct map_desc qsd8x50_io_desc[] __initdata = {
         MSM_DEVICE(SCPLL),
         MSM_DEVICE(AD5),
         MSM_DEVICE(MDC),
-#ifdef CONFIG_MSM_DEBUG_UART
+#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
+        defined(CONFIG_DEBUG_MSM_UART3)
         MSM_DEVICE(DEBUG_UART),
 #endif
         {
@@ -109,6 +111,9 @@ static struct map_desc msm8x60_io_desc[] __initdata = {
         MSM_CHIP_DEVICE(TMR0, MSM8X60),
         MSM_DEVICE(ACC),
         MSM_DEVICE(GCC),
+#ifdef CONFIG_DEBUG_MSM8660_UART
+        MSM_DEVICE(DEBUG_UART),
+#endif
 };
 
 void __init msm_map_msm8x60_io(void)
@@ -123,6 +128,9 @@ static struct map_desc msm8960_io_desc[] __initdata = {
         MSM_CHIP_DEVICE(QGIC_CPU, MSM8960),
         MSM_CHIP_DEVICE(TMR, MSM8960),
         MSM_CHIP_DEVICE(TMR0, MSM8960),
+#ifdef CONFIG_DEBUG_MSM8960_UART
+        MSM_DEVICE(DEBUG_UART),
+#endif
 };
 
 void __init msm_map_msm8960_io(void)
@@ -146,7 +154,8 @@ static struct map_desc msm7x30_io_desc[] __initdata = {
         MSM_DEVICE(SAW),
         MSM_DEVICE(GCC),
         MSM_DEVICE(TCSR),
-#ifdef CONFIG_MSM_DEBUG_UART
+#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
+        defined(CONFIG_DEBUG_MSM_UART3)
         MSM_DEVICE(DEBUG_UART),
 #endif
         {
diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c
index fdec58aaa35c..0b3e357c4c8c 100644
--- a/arch/arm/mach-msm/platsmp.c
+++ b/arch/arm/mach-msm/platsmp.c
@@ -79,7 +79,7 @@ static __cpuinit void prepare_cold_cpu(unsigned int cpu)
         ret = scm_set_boot_addr(virt_to_phys(msm_secondary_startup),
                                 SCM_FLAG_COLDBOOT_CPU1);
         if (ret == 0) {
-                void *sc1_base_ptr;
+                void __iomem *sc1_base_ptr;
                 sc1_base_ptr = ioremap_nocache(0x00902000, SZ_4K*2);
                 if (sc1_base_ptr) {
                         writel(0, sc1_base_ptr + VDD_SC1_ARRAY_CLAMP_GFS_CTL);