[ARM] msm: core platform support for ARCH_MSM7X00A

- core header files for arch-msm
- Kconfig and Makefiles to enable ARCH_MSM7X00A builds
- MSM7X00A specific arch_idle
- peripheral iomap and irq number definitions

Signed-off-by: Brian Swetland <swetland@google.com>

7 files changed, 140 insertions, 1 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a04f507..89c3811 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -409,6 +409,17 @@ config ARCH_OMAP
 	help
 	  Support for TI's OMAP platform (OMAP1 and OMAP2).
 
+config ARCH_MSM7X00A
+	bool "Qualcomm MSM7X00A"
+	select GENERIC_TIME
+	select GENERIC_CLOCKEVENTS
+	help
+	  Support for Qualcomm MSM7X00A based systems.  This runs on the ARM11
+	  apps processor of the MSM7X00A and depends on a shared memory
+	  interface to the ARM9 modem processor which runs the baseband stack
+	  and controls some vital subsystems (clock and power control, etc).
+	  <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
+
 endchoice
 
 source "arch/arm/mach-clps711x/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 35e56c9..dd220d1 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -139,6 +139,7 @@ endif
  machine-$(CONFIG_ARCH_KS8695)     := ks8695
   incdir-$(CONFIG_ARCH_MXC)	   := mxc
  machine-$(CONFIG_ARCH_MX3)	   := mx3
+ machine-$(CONFIG_ARCH_MSM7X00A)   := msm
 
 ifeq ($(CONFIG_ARCH_EBSA110),y)
 # This is what happens if you forget the IOCS16 line.
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
new file mode 100644
index 0000000..feb9e46
--- /dev/null
+++ b/arch/arm/mach-msm/Makefile
@@ -0,0 +1,2 @@
+obj-y += io.o idle.o 
+
diff --git a/arch/arm/mach-msm/Makefile.boot b/arch/arm/mach-msm/Makefile.boot
new file mode 100644
index 0000000..24dfbf8
--- /dev/null
+++ b/arch/arm/mach-msm/Makefile.boot
@@ -0,0 +1,3 @@
+  zreladdr-y		:= 0x10008000
+params_phys-y		:= 0x10000100
+initrd_phys-y		:= 0x10800000
diff --git a/arch/arm/mach-msm/idle.S b/arch/arm/mach-msm/idle.S
new file mode 100644
index 0000000..2b1cb7f
--- /dev/null
+++ b/arch/arm/mach-msm/idle.S
@@ -0,0 +1,36 @@
+/* linux/include/asm-arm/arch-msm/idle.S
+ *
+ * Idle processing for MSM7K - work around bugs with SWFI.
+ *
+ * Copyright (c) 2007 QUALCOMM Incorporated.
+ * Copyright (C) 2007 Google, Inc. 
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */ 
+		
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ENTRY(arch_idle)
+#ifdef CONFIG_MSM7X00A_IDLE
+	mrc     p15, 0, r1, c1, c0, 0    /* read current CR    */
+	bic     r0, r1, #(1 << 2)        /* clear dcache bit   */
+	bic     r0, r0, #(1 << 12)       /* clear icache bit   */
+	mcr     p15, 0, r0, c1, c0, 0    /* disable d/i cache  */
+
+	mov     r0, #0                   /* prepare wfi value  */
+	mcr     p15, 0, r0, c7, c10, 0   /* flush the cache    */
+	mcr     p15, 0, r0, c7, c10, 4   /* memory barrier     */
+	mcr     p15, 0, r0, c7, c0, 4    /* wait for interrupt */
+
+	mcr     p15, 0, r1, c1, c0, 0    /* restore d/i cache  */
+#endif
+	mov     pc, lr
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
new file mode 100644
index 0000000..c39edb9
--- /dev/null
+++ b/arch/arm/mach-msm/io.c
@@ -0,0 +1,85 @@
+/* arch/arm/mach-msm/io.c
+ *
+ * MSM7K io support
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Brian Swetland <swetland@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/arch/msm_iomap.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/board.h>
+
+#define MSM_DEVICE(name) { \
+		.virtual = MSM_##name##_BASE, \
+		.pfn = __phys_to_pfn(MSM_##name##_PHYS), \
+		.length = MSM_##name##_SIZE, \
+		.type = MT_DEVICE_NONSHARED, \
+	 }
+
+static struct map_desc msm_io_desc[] __initdata = {
+	MSM_DEVICE(VIC),
+	MSM_DEVICE(CSR),
+	MSM_DEVICE(GPT),
+	MSM_DEVICE(DMOV),
+	MSM_DEVICE(UART1),
+	MSM_DEVICE(UART2),
+	MSM_DEVICE(UART3),
+	MSM_DEVICE(I2C),
+	MSM_DEVICE(GPIO1),
+	MSM_DEVICE(GPIO2),
+	MSM_DEVICE(HSUSB),
+	MSM_DEVICE(CLK_CTL),
+	MSM_DEVICE(PMDH),
+	MSM_DEVICE(EMDH),
+	MSM_DEVICE(MDP),
+	{
+		.virtual =  MSM_SHARED_RAM_BASE,
+		.pfn =      __phys_to_pfn(MSM_SHARED_RAM_PHYS),
+		.length =   MSM_SHARED_RAM_SIZE,
+		.type =     MT_DEVICE,
+	},
+};
+
+void __init msm_map_common_io(void)
+{
+	/* Make sure the peripheral register window is closed, since
+	 * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
+	 * pages are peripheral interface or not.
+	 */
+	asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
+
+	iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
+}
+
+void __iomem *
+__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+{
+	if (mtype == MT_DEVICE) {
+		/* The peripherals in the 88000000 - D0000000 range
+		 * are only accessable by type MT_DEVICE_NONSHARED.
+		 * Adjust mtype as necessary to make this "just work."
+		 */
+		if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
+			mtype = MT_DEVICE_NONSHARED;
+	}
+
+	return __arm_ioremap(phys_addr, size, mtype);
+}
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 7868f4d..bc2ca3c 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -345,8 +345,9 @@ config CPU_XSC3
 # ARMv6
 config CPU_V6
 	bool "Support ARM V6 processor"
-	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2 || ARCH_MX3
+	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2 || ARCH_MX3 || ARCH_MSM7X00A
 	default y if ARCH_MX3
+	default y if ARCH_MSM7X00A
 	select CPU_32v6
 	select CPU_ABRT_EV6
 	select CPU_CACHE_V6