Patchwork [v3,2/6] arm/imx6q: add core definitions and low-level debug uart

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Submitter Shawn Guo
Date Sept. 26, 2011, 7:20 a.m.
Message ID <1317021651-17359-3-git-send-email-shawn.guo@linaro.org>
Download mbox | patch
Permalink /patch/116366/
State New
Headers show

Comments

Shawn Guo - Sept. 26, 2011, 7:20 a.m.
It adds the core definitions and low-level debug uart support
for imx6q.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 arch/arm/Kconfig                             |    2 +-
 arch/arm/Kconfig.debug                       |    7 +++++
 arch/arm/Makefile                            |    1 +
 arch/arm/mach-imx/Kconfig                    |   15 +++++++++++-
 arch/arm/mach-imx/Makefile                   |    2 +
 arch/arm/mach-imx/Makefile.boot              |    4 +++
 arch/arm/mach-imx/lluart.c                   |   32 +++++++++++++++++++++++++
 arch/arm/plat-mxc/Kconfig                    |    5 ++++
 arch/arm/plat-mxc/include/mach/debug-macro.S |    2 +
 arch/arm/plat-mxc/include/mach/hardware.h    |    6 ++++
 arch/arm/plat-mxc/include/mach/irqs.h        |   10 ++++++-
 arch/arm/plat-mxc/include/mach/memory.h      |    3 ++
 arch/arm/plat-mxc/include/mach/mx6q.h        |   33 ++++++++++++++++++++++++++
 13 files changed, 118 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/mach-imx/lluart.c
 create mode 100644 arch/arm/plat-mxc/include/mach/mx6q.h

Patch

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 414ff01..e023b06 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1376,7 +1376,7 @@  config SMP
 	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
 		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
 		 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
-		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
+		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE || SOC_IMX6Q
 	select USE_GENERIC_SMP_HELPERS
 	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
 	help
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index add32ff..ba206e0 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -155,6 +155,13 @@  choice
 		  Say Y here if you want kernel low-level debugging support
 		  on i.MX50 or i.MX53.
 
+	config DEBUG_IMX6Q_UART
+		bool "i.MX6Q Debug UART"
+		depends on SOC_IMX6Q
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on i.MX6Q.
+
 	config DEBUG_S3C_UART0
 		depends on PLAT_SAMSUNG
 		bool "Use S3C UART 0 for low-level debug"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5665c2a..9f4a924 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -162,6 +162,7 @@  machine-$(CONFIG_ARCH_MX2)		:= imx
 machine-$(CONFIG_ARCH_MX25)		:= imx
 machine-$(CONFIG_ARCH_MX3)		:= imx
 machine-$(CONFIG_ARCH_MX5)		:= mx5
+machine-$(CONFIG_ARCH_MX6)		:= imx
 machine-$(CONFIG_ARCH_MXS)		:= mxs
 machine-$(CONFIG_ARCH_NETX)		:= netx
 machine-$(CONFIG_ARCH_NOMADIK)		:= nomadik
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 0519dd7..e88e366 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -58,7 +58,6 @@  config SOC_IMX35
 	select ARCH_MX35
 	select MXC_AVIC
 
-
 if ARCH_MX1
 
 comment "MX1 platforms:"
@@ -606,3 +605,17 @@  config MACH_VPR200
 	  configurations for the board and its peripherals.
 
 endif
+
+if ARCH_MX6
+comment "i.MX6 family:"
+
+config SOC_IMX6Q
+	bool "i.MX6 Quad support"
+	select ARM_GIC
+	select CPU_V7
+	select USE_OF
+
+	help
+	  This enables support for Freescale i.MX6 Quad processor.
+
+endif
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index e9eb36d..96ecc96 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -61,3 +61,5 @@  obj-$(CONFIG_MACH_MX35_3DS) += mach-mx35_3ds.o
 obj-$(CONFIG_MACH_EUKREA_CPUIMX35) += mach-cpuimx35.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o
 obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o
+
+obj-$(CONFIG_DEBUG_LL) += lluart.o
diff --git a/arch/arm/mach-imx/Makefile.boot b/arch/arm/mach-imx/Makefile.boot
index dbe6120..22d8588 100644
--- a/arch/arm/mach-imx/Makefile.boot
+++ b/arch/arm/mach-imx/Makefile.boot
@@ -17,3 +17,7 @@  initrd_phys-$(CONFIG_MACH_MX27)	:= 0xA0800000
 zreladdr-$(CONFIG_ARCH_MX3)	+= 0x80008000
 params_phys-$(CONFIG_ARCH_MX3)	:= 0x80000100
 initrd_phys-$(CONFIG_ARCH_MX3)	:= 0x80800000
+
+zreladdr-$(CONFIG_SOC_IMX6Q)	+= 0x10008000
+params_phys-$(CONFIG_SOC_IMX6Q)	:= 0x10000100
+initrd_phys-$(CONFIG_SOC_IMX6Q)	:= 0x10800000
diff --git a/arch/arm/mach-imx/lluart.c b/arch/arm/mach-imx/lluart.c
new file mode 100644
index 0000000..d4ab6f2
--- /dev/null
+++ b/arch/arm/mach-imx/lluart.c
@@ -0,0 +1,32 @@ 
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <asm/page.h>
+#include <asm/sizes.h>
+#include <asm/mach/map.h>
+#include <mach/hardware.h>
+
+static struct map_desc imx_lluart_desc = {
+#ifdef CONFIG_DEBUG_IMX6Q_UART
+	.virtual	= MX6Q_IO_P2V(MX6Q_UART4_BASE_ADDR),
+	.pfn		= __phys_to_pfn(MX6Q_UART4_BASE_ADDR),
+	.length		= MX6Q_UART4_SIZE,
+	.type		= MT_DEVICE,
+#endif
+};
+
+void __init imx_lluart_map_io(void)
+{
+	if (imx_lluart_desc.virtual)
+		iotable_init(&imx_lluart_desc, 1);
+}
diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig
index a5353fc..e548f9b 100644
--- a/arch/arm/plat-mxc/Kconfig
+++ b/arch/arm/plat-mxc/Kconfig
@@ -48,6 +48,11 @@  config ARCH_MX51
 	help
 	  This enables support for systems based on the Freescale i.MX51 family
 
+config ARCH_MX6
+	bool "i.MX6"
+	help
+	  This enables support for systems based on the Freescale i.MX6 family
+
 endchoice
 
 source "arch/arm/mach-imx/Kconfig"
diff --git a/arch/arm/plat-mxc/include/mach/debug-macro.S b/arch/arm/plat-mxc/include/mach/debug-macro.S
index 07cfdbe..f2ce2cb 100644
--- a/arch/arm/plat-mxc/include/mach/debug-macro.S
+++ b/arch/arm/plat-mxc/include/mach/debug-macro.S
@@ -24,6 +24,8 @@ 
 #define UART_PADDR	MX51_UART1_BASE_ADDR
 #elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
 #define UART_PADDR	MX53_UART1_BASE_ADDR
+#elif defined (CONFIG_DEBUG_IMX6Q_UART)
+#define UART_PADDR	MX6Q_UART4_BASE_ADDR
 #endif
 
 #define UART_VADDR	IMX_IO_ADDRESS(UART_PADDR)
diff --git a/arch/arm/plat-mxc/include/mach/hardware.h b/arch/arm/plat-mxc/include/mach/hardware.h
index a8bfd56..ee28c56 100644
--- a/arch/arm/plat-mxc/include/mach/hardware.h
+++ b/arch/arm/plat-mxc/include/mach/hardware.h
@@ -86,6 +86,11 @@ 
  *	SPBA0	0x70000000+0x100000	->	0xf5400000+0x100000
  *	AIPS1	0x73f00000+0x100000	->	0xf5700000+0x100000
  *	AIPS2	0x83f00000+0x100000	->	0xf4300000+0x100000
+ * mx6q:
+ *	SCU	0x00a00000+0x001000	->	0xf4000000+0x001000
+ *	CCM	0x020c4000+0x004000	->	0xf42c4000+0x004000
+ *	ANATOP	0x020c8000+0x001000	->	0xf42c8000+0x001000
+ *	UART4	0x021f0000+0x004000	->	0xf42f0000+0x004000
  */
 #define IMX_IO_P2V(x)	(						\
 			0xf4000000 +					\
@@ -97,6 +102,7 @@ 
 
 #include <mach/mxc.h>
 
+#include <mach/mx6q.h>
 #include <mach/mx50.h>
 #include <mach/mx51.h>
 #include <mach/mx53.h>
diff --git a/arch/arm/plat-mxc/include/mach/irqs.h b/arch/arm/plat-mxc/include/mach/irqs.h
index 00e812b..fd9efb0 100644
--- a/arch/arm/plat-mxc/include/mach/irqs.h
+++ b/arch/arm/plat-mxc/include/mach/irqs.h
@@ -14,9 +14,15 @@ 
 #include <asm-generic/gpio.h>
 
 /*
- * SoCs with TZIC interrupt controller have 128 IRQs, those with AVIC have 64
+ * SoCs with GIC interrupt controller have 160 IRQs, those with TZIC
+ * have 128 IRQs, and those with AVIC have 64.
+ *
+ * To support single image, the biggest number should be defined on
+ * top of the list.
  */
-#ifdef CONFIG_MXC_TZIC
+#if defined CONFIG_ARM_GIC
+#define MXC_INTERNAL_IRQS	160
+#elif defined CONFIG_MXC_TZIC
 #define MXC_INTERNAL_IRQS	128
 #else
 #define MXC_INTERNAL_IRQS	64
diff --git a/arch/arm/plat-mxc/include/mach/memory.h b/arch/arm/plat-mxc/include/mach/memory.h
index 3ec84b9..ff2792c 100644
--- a/arch/arm/plat-mxc/include/mach/memory.h
+++ b/arch/arm/plat-mxc/include/mach/memory.h
@@ -19,6 +19,7 @@ 
 #define MX50_PHYS_OFFSET	UL(0x70000000)
 #define MX51_PHYS_OFFSET	UL(0x90000000)
 #define MX53_PHYS_OFFSET	UL(0x70000000)
+#define MX6Q_PHYS_OFFSET	UL(0x10000000)
 
 #if !defined(CONFIG_RUNTIME_PHYS_OFFSET)
 # if defined CONFIG_ARCH_MX1
@@ -37,6 +38,8 @@ 
 #  define PLAT_PHYS_OFFSET		MX51_PHYS_OFFSET
 # elif defined CONFIG_ARCH_MX53
 #  define PLAT_PHYS_OFFSET		MX53_PHYS_OFFSET
+# elif defined CONFIG_SOC_IMX6Q
+#  define PLAT_PHYS_OFFSET		MX6Q_PHYS_OFFSET
 # endif
 #endif
 
diff --git a/arch/arm/plat-mxc/include/mach/mx6q.h b/arch/arm/plat-mxc/include/mach/mx6q.h
new file mode 100644
index 0000000..254a561
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mx6q.h
@@ -0,0 +1,33 @@ 
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __MACH_MX6Q_H__
+#define __MACH_MX6Q_H__
+
+#define MX6Q_IO_P2V(x)			IMX_IO_P2V(x)
+#define MX6Q_IO_ADDRESS(x)		IOMEM(MX6Q_IO_P2V(x))
+
+/*
+ * The following are the blocks that need to be statically mapped.
+ * For other blocks, the base address really should be retrieved from
+ * device tree.
+ */
+#define MX6Q_SCU_BASE_ADDR		0x00a00000
+#define MX6Q_SCU_SIZE			0x1000
+#define MX6Q_CCM_BASE_ADDR		0x020c4000
+#define MX6Q_CCM_SIZE			0x4000
+#define MX6Q_ANATOP_BASE_ADDR		0x020c8000
+#define MX6Q_ANATOP_SIZE		0x1000
+#define MX6Q_UART4_BASE_ADDR		0x021f0000
+#define MX6Q_UART4_SIZE			0x4000
+
+#endif	/* __MACH_MX6Q_H__ */