arm/imx2x: split i.MX21/i.MX27 register definitions

* define new CONFIG_ARCH_MX21 (this one is currently mutually exclusive to
  CONFIG_ARCH_MX27, but this might change)
* splits one header file. Memory definitions, interrupt sources,
  DMA channels are split into common part, i.MX27 specific and i.MX21
  specific.
* guard access to UART5/UART6, which don't exist on i.MX21

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

5 files changed, 306 insertions, 180 deletions

diff --git a/arch/arm/plat-mxc/include/mach/hardware.h b/arch/arm/plat-mxc/include/mach/hardware.h
index a612d8bb73c8..11f5727ea445 100644
--- a/arch/arm/plat-mxc/include/mach/hardware.h
+++ b/arch/arm/plat-mxc/include/mach/hardware.h
@@ -27,6 +27,10 @@
 #endif
 
 #ifdef CONFIG_ARCH_MX2
+# include <mach/mx2x.h>
+# ifdef CONFIG_MACH_MX21
+#  include <mach/mx21.h>
+# endif
 # ifdef CONFIG_MACH_MX27
 #  include <mach/mx27.h>
 # endif
diff --git a/arch/arm/plat-mxc/include/mach/mx21.h b/arch/arm/plat-mxc/include/mach/mx21.h
new file mode 100644
index 000000000000..cfdbe051caf6
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mx21.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ * Copyright 2009 Holger Schurig, hs4233@mail.mn-solutions.de
+ *
+ * This contains i.MX21-specific hardware definitions. For those
+ * hardware pieces that are common between i.MX21 and i.MX27, have a
+ * look at mx2x.h.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+#ifndef __ASM_ARCH_MXC_MX21_H__
+#define __ASM_ARCH_MXC_MX21_H__
+
+#ifndef __ASM_ARCH_MXC_HARDWARE_H__
+#error "Do not include directly."
+#endif
+
+
+/* Memory regions and CS */
+#define SDRAM_BASE_ADDR         0xC0000000
+#define CSD1_BASE_ADDR          0xC4000000
+
+#define CS0_BASE_ADDR           0xC8000000
+#define CS1_BASE_ADDR           0xCC000000
+#define CS2_BASE_ADDR           0xD0000000
+#define CS3_BASE_ADDR           0xD1000000
+#define CS4_BASE_ADDR           0xD2000000
+#define CS5_BASE_ADDR           0xDD000000
+#define PCMCIA_MEM_BASE_ADDR    0xD4000000
+
+/* NAND, SDRAM, WEIM etc controllers */
+#define X_MEMC_BASE_ADDR        0xDF000000
+#define X_MEMC_BASE_ADDR_VIRT   0xF4200000
+#define X_MEMC_SIZE             SZ_256K
+
+#define SDRAMC_BASE_ADDR        (X_MEMC_BASE_ADDR + 0x0000)
+#define EIM_BASE_ADDR           (X_MEMC_BASE_ADDR + 0x1000)
+#define PCMCIA_CTL_BASE_ADDR    (X_MEMC_BASE_ADDR + 0x2000)
+#define NFC_BASE_ADDR           (X_MEMC_BASE_ADDR + 0x3000)
+
+#define IRAM_BASE_ADDR          0xFFFFE800	/* internal ram */
+
+/* this is an i.MX21 CPU */
+#define cpu_is_mx21()		(1)
+
+/* this CPU supports up to 192 GPIOs (don't forget the baseboard!) */
+#define ARCH_NR_GPIOS		(6*32 + 16)
+
+/* fixed interrupt numbers */
+#define MXC_INT_USBCTRL         58
+#define MXC_INT_USBCTRL         58
+#define MXC_INT_USBMNP          57
+#define MXC_INT_USBFUNC         56
+#define MXC_INT_USBHOST         55
+#define MXC_INT_USBDMA          54
+#define MXC_INT_USBWKUP         53
+#define MXC_INT_EMMADEC         50
+#define MXC_INT_EMMAENC         49
+#define MXC_INT_BMI             30
+#define MXC_INT_FIRI            9
+
+/* fixed DMA request numbers */
+#define DMA_REQ_BMI_RX          29
+#define DMA_REQ_BMI_TX          28
+#define DMA_REQ_FIRI_RX         4
+
+#endif /* __ASM_ARCH_MXC_MX21_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx27.h b/arch/arm/plat-mxc/include/mach/mx27.h
index 9c609d3ba23e..5f6a8a7bb19c 100644
--- a/arch/arm/plat-mxc/include/mach/mx27.h
+++ b/arch/arm/plat-mxc/include/mach/mx27.h
@@ -2,6 +2,10 @@
  * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
  * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
  *
+ * This contains i.MX27-specific hardware definitions. For those
+ * hardware pieces that are common between i.MX21 and i.MX27, have a
+ * look at mx2x.h.
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
@@ -27,35 +31,6 @@
 /* IRAM */
 #define IRAM_BASE_ADDR          0xFFFF4C00	/* internal ram */
 
-/* Register offests */
-#define AIPI_BASE_ADDR          0x10000000
-#define AIPI_BASE_ADDR_VIRT     0xF4000000
-#define AIPI_SIZE               SZ_1M
-
-#define DMA_BASE_ADDR           (AIPI_BASE_ADDR + 0x01000)
-#define WDOG_BASE_ADDR          (AIPI_BASE_ADDR + 0x02000)
-#define GPT1_BASE_ADDR          (AIPI_BASE_ADDR + 0x03000)
-#define GPT2_BASE_ADDR          (AIPI_BASE_ADDR + 0x04000)
-#define GPT3_BASE_ADDR          (AIPI_BASE_ADDR + 0x05000)
-#define PWM_BASE_ADDR           (AIPI_BASE_ADDR + 0x06000)
-#define RTC_BASE_ADDR           (AIPI_BASE_ADDR + 0x07000)
-#define KPP_BASE_ADDR           (AIPI_BASE_ADDR + 0x08000)
-#define OWIRE_BASE_ADDR         (AIPI_BASE_ADDR + 0x09000)
-#define UART1_BASE_ADDR         (AIPI_BASE_ADDR + 0x0A000)
-#define UART2_BASE_ADDR         (AIPI_BASE_ADDR + 0x0B000)
-#define UART3_BASE_ADDR         (AIPI_BASE_ADDR + 0x0C000)
-#define UART4_BASE_ADDR         (AIPI_BASE_ADDR + 0x0D000)
-#define CSPI1_BASE_ADDR         (AIPI_BASE_ADDR + 0x0E000)
-#define CSPI2_BASE_ADDR         (AIPI_BASE_ADDR + 0x0F000)
-#define SSI1_BASE_ADDR          (AIPI_BASE_ADDR + 0x10000)
-#define SSI2_BASE_ADDR          (AIPI_BASE_ADDR + 0x11000)
-#define I2C_BASE_ADDR           (AIPI_BASE_ADDR + 0x12000)
-#define SDHC1_BASE_ADDR         (AIPI_BASE_ADDR + 0x13000)
-#define SDHC2_BASE_ADDR         (AIPI_BASE_ADDR + 0x14000)
-#define GPIO_BASE_ADDR          (AIPI_BASE_ADDR + 0x15000)
-#define AUDMUX_BASE_ADDR        (AIPI_BASE_ADDR + 0x16000)
-
-#define CSPI3_BASE_ADDR         (AIPI_BASE_ADDR + 0x17000)
 #define MSHC_BASE_ADDR          (AIPI_BASE_ADDR + 0x18000)
 #define GPT5_BASE_ADDR          (AIPI_BASE_ADDR + 0x19000)
 #define GPT4_BASE_ADDR          (AIPI_BASE_ADDR + 0x1A000)
@@ -64,55 +39,24 @@
 #define I2C2_BASE_ADDR          (AIPI_BASE_ADDR + 0x1D000)
 #define SDHC3_BASE_ADDR         (AIPI_BASE_ADDR + 0x1E000)
 #define GPT6_BASE_ADDR          (AIPI_BASE_ADDR + 0x1F000)
-
-#define LCDC_BASE_ADDR          (AIPI_BASE_ADDR + 0x21000)
-#define SLCDC_BASE_ADDR         (AIPI_BASE_ADDR + 0x22000)
 #define VPU_BASE_ADDR           (AIPI_BASE_ADDR + 0x23000)
-#define USBOTG_BASE_ADDR        (AIPI_BASE_ADDR + 0x24000)
-/* for mx27*/
 #define OTG_BASE_ADDR           USBOTG_BASE_ADDR
 #define SAHARA_BASE_ADDR        (AIPI_BASE_ADDR + 0x25000)
-#define EMMA_PP_BASE_ADDR       (AIPI_BASE_ADDR + 0x26000)
-#define EMMA_PRP_BASE_ADDR      (AIPI_BASE_ADDR + 0x26400)
-#define CCM_BASE_ADDR           (AIPI_BASE_ADDR + 0x27000)
-#define SYSCTRL_BASE_ADDR       (AIPI_BASE_ADDR + 0x27800)
 #define IIM_BASE_ADDR           (AIPI_BASE_ADDR + 0x28000)
-
 #define RTIC_BASE_ADDR          (AIPI_BASE_ADDR + 0x2A000)
 #define FEC_BASE_ADDR           (AIPI_BASE_ADDR + 0x2B000)
 #define SCC_BASE_ADDR           (AIPI_BASE_ADDR + 0x2C000)
 #define ETB_BASE_ADDR           (AIPI_BASE_ADDR + 0x3B000)
 #define ETB_RAM_BASE_ADDR       (AIPI_BASE_ADDR + 0x3C000)
 
-#define JAM_BASE_ADDR           (AIPI_BASE_ADDR + 0x3E000)
-#define MAX_BASE_ADDR           (AIPI_BASE_ADDR + 0x3F000)
-
-/* ROMP and AVIC */
+/* ROM patch */
 #define ROMP_BASE_ADDR          0x10041000
 
-#define AVIC_BASE_ADDR          0x10040000
-
-#define SAHB1_BASE_ADDR         0x80000000
-#define SAHB1_BASE_ADDR_VIRT    0xF4100000
-#define SAHB1_SIZE              SZ_1M
-
-#define CSI_BASE_ADDR           (SAHB1_BASE_ADDR + 0x0000)
 #define ATA_BASE_ADDR           (SAHB1_BASE_ADDR + 0x1000)
 
-/* NAND, SDRAM, WEIM, M3IF, EMI controllers */
-#define X_MEMC_BASE_ADDR        0xD8000000
-#define X_MEMC_BASE_ADDR_VIRT   0xF4200000
-#define X_MEMC_SIZE             SZ_1M
-
-#define NFC_BASE_ADDR           (X_MEMC_BASE_ADDR)
-#define SDRAMC_BASE_ADDR        (X_MEMC_BASE_ADDR + 0x1000)
-#define WEIM_BASE_ADDR          (X_MEMC_BASE_ADDR + 0x2000)
-#define M3IF_BASE_ADDR          (X_MEMC_BASE_ADDR + 0x3000)
-#define PCMCIA_CTL_BASE_ADDR    (X_MEMC_BASE_ADDR + 0x4000)
-
 /* Memory regions and CS */
-#define SDRAM_BASE_ADDR		0xA0000000
-#define CSD1_BASE_ADDR		0xB0000000
+#define SDRAM_BASE_ADDR         0xA0000000
+#define CSD1_BASE_ADDR          0xB0000000
 
 #define CS0_BASE_ADDR           0xC0000000
 #define CS1_BASE_ADDR           0xC8000000
@@ -122,44 +66,20 @@
 #define CS5_BASE_ADDR           0xD6000000
 #define PCMCIA_MEM_BASE_ADDR    0xDC000000
 
-/*
- * This macro defines the physical to virtual address mapping for all the
- * peripheral modules. It is used by passing in the physical address as x
- * and returning the virtual address. If the physical address is not mapped,
- * it returns 0xDEADBEEF
- */
-#define IO_ADDRESS(x)   \
-	(void __force __iomem *) \
-	(((x >= AIPI_BASE_ADDR) && (x < (AIPI_BASE_ADDR + AIPI_SIZE))) ? \
-		AIPI_IO_ADDRESS(x) : \
-	((x >= SAHB1_BASE_ADDR) && (x < (SAHB1_BASE_ADDR + SAHB1_SIZE))) ? \
-		SAHB1_IO_ADDRESS(x) : \
-	((x >= X_MEMC_BASE_ADDR) && (x < (X_MEMC_BASE_ADDR + X_MEMC_SIZE))) ? \
-		X_MEMC_IO_ADDRESS(x) : 0xDEADBEEF)
-
-/* define the address mapping macros: in physical address order */
-#define AIPI_IO_ADDRESS(x)  \
-	(((x) - AIPI_BASE_ADDR) + AIPI_BASE_ADDR_VIRT)
-
-#define AVIC_IO_ADDRESS(x)	AIPI_IO_ADDRESS(x)
-
-#define SAHB1_IO_ADDRESS(x)  \
-	(((x) - SAHB1_BASE_ADDR) + SAHB1_BASE_ADDR_VIRT)
-
-#define CS4_IO_ADDRESS(x)  \
-	(((x) - CS4_BASE_ADDR) + CS4_BASE_ADDR_VIRT)
-
-#define X_MEMC_IO_ADDRESS(x)  \
-	(((x) - X_MEMC_BASE_ADDR) + X_MEMC_BASE_ADDR_VIRT)
+/* NAND, SDRAM, WEIM, M3IF, EMI controllers */
+#define X_MEMC_BASE_ADDR        0xD8000000
+#define X_MEMC_BASE_ADDR_VIRT   0xF4200000
+#define X_MEMC_SIZE             SZ_1M
 
-#define PCMCIA_IO_ADDRESS(x) \
-	(((x) - X_MEMC_BASE_ADDR) + X_MEMC_BASE_ADDR_VIRT)
+#define NFC_BASE_ADDR           (X_MEMC_BASE_ADDR)
+#define SDRAMC_BASE_ADDR        (X_MEMC_BASE_ADDR + 0x1000)
+#define WEIM_BASE_ADDR          (X_MEMC_BASE_ADDR + 0x2000)
+#define M3IF_BASE_ADDR          (X_MEMC_BASE_ADDR + 0x3000)
+#define PCMCIA_CTL_BASE_ADDR    (X_MEMC_BASE_ADDR + 0x4000)
 
-/* fixed interrput numbers */
+/* fixed interrupt numbers */
 #define MXC_INT_CCM		63
 #define MXC_INT_IIM		62
-#define MXC_INT_LCDC		61
-#define MXC_INT_SLCDC		60
 #define MXC_INT_SAHARA		59
 #define MXC_INT_SCC_SCM		58
 #define MXC_INT_SCC_SMN		57
@@ -167,54 +87,12 @@
 #define MXC_INT_USB2		55
 #define MXC_INT_USB1		54
 #define MXC_INT_VPU		53
-#define MXC_INT_EMMAPP		52
-#define MXC_INT_EMMAPRP		51
 #define MXC_INT_FEC		50
 #define MXC_INT_UART5		49
 #define MXC_INT_UART6		48
-#define MXC_INT_DMACH15		47
-#define MXC_INT_DMACH14		46
-#define MXC_INT_DMACH13		45
-#define MXC_INT_DMACH12		44
-#define MXC_INT_DMACH11		43
-#define MXC_INT_DMACH10		42
-#define MXC_INT_DMACH9		41
-#define MXC_INT_DMACH8		40
-#define MXC_INT_DMACH7		39
-#define MXC_INT_DMACH6		38
-#define MXC_INT_DMACH5		37
-#define MXC_INT_DMACH4		36
-#define MXC_INT_DMACH3		35
-#define MXC_INT_DMACH2		34
-#define MXC_INT_DMACH1		33
-#define MXC_INT_DMACH0		32
-#define MXC_INT_CSI		31
 #define MXC_INT_ATA		30
-#define MXC_INT_NANDFC		29
-#define MXC_INT_PCMCIA		28
-#define MXC_INT_WDOG		27
-#define MXC_INT_GPT1		26
-#define MXC_INT_GPT2		25
-#define MXC_INT_GPT3		24
-#define MXC_INT_GPT		INT_GPT1
-#define MXC_INT_PWM		23
-#define MXC_INT_RTC		22
-#define MXC_INT_KPP		21
-#define MXC_INT_UART1		20
-#define MXC_INT_UART2		19
-#define MXC_INT_UART3		18
-#define MXC_INT_UART4		17
-#define MXC_INT_CSPI1		16
-#define MXC_INT_CSPI2		15
-#define MXC_INT_SSI1		14
-#define MXC_INT_SSI2		13
-#define MXC_INT_I2C		12
-#define MXC_INT_SDHC1		11
-#define MXC_INT_SDHC2		10
 #define MXC_INT_SDHC3		9
-#define MXC_INT_GPIO		8
 #define MXC_INT_SDHC		7
-#define MXC_INT_CSPI3		6
 #define MXC_INT_RTIC		5
 #define MXC_INT_GPT4		4
 #define MXC_INT_GPT5		3
@@ -228,36 +106,9 @@
 #define DMA_REQ_UART6_TX        34
 #define DMA_REQ_UART5_RX        33
 #define DMA_REQ_UART5_TX        32
-#define DMA_REQ_CSI_RX          31
-#define DMA_REQ_CSI_STAT        30
 #define DMA_REQ_ATA_RCV         29
 #define DMA_REQ_ATA_TX          28
-#define DMA_REQ_UART1_TX        27
-#define DMA_REQ_UART1_RX        26
-#define DMA_REQ_UART2_TX        25
-#define DMA_REQ_UART2_RX        24
-#define DMA_REQ_UART3_TX        23
-#define DMA_REQ_UART3_RX        22
-#define DMA_REQ_UART4_TX        21
-#define DMA_REQ_UART4_RX        20
-#define DMA_REQ_CSPI1_TX        19
-#define DMA_REQ_CSPI1_RX        18
-#define DMA_REQ_CSPI2_TX        17
-#define DMA_REQ_CSPI2_RX        16
-#define DMA_REQ_SSI1_TX1        15
-#define DMA_REQ_SSI1_RX1        14
-#define DMA_REQ_SSI1_TX0        13
-#define DMA_REQ_SSI1_RX0        12
-#define DMA_REQ_SSI2_TX1        11
-#define DMA_REQ_SSI2_RX1        10
-#define DMA_REQ_SSI2_TX0        9
-#define DMA_REQ_SSI2_RX0        8
-#define DMA_REQ_SDHC1           7
-#define DMA_REQ_SDHC2           6
 #define DMA_REQ_MSHC            4
-#define DMA_REQ_EXT             3
-#define DMA_REQ_CSPI3_TX        2
-#define DMA_REQ_CSPI3_RX        1
 
 /* silicon revisions specific to i.MX27 */
 #define CHIP_REV_1_0		0x00
@@ -267,20 +118,6 @@
 extern int mx27_revision(void);
 #endif
 
-/* gpio and gpio based interrupt handling */
-#define GPIO_DR		 	0x1C
-#define GPIO_GDIR	 	0x00
-#define GPIO_PSR	 	0x24
-#define GPIO_ICR1	 	0x28
-#define GPIO_ICR2	 	0x2C
-#define GPIO_IMR	 	0x30
-#define GPIO_ISR	 	0x34
-#define GPIO_INT_LOW_LEV	0x3
-#define GPIO_INT_HIGH_LEV	0x2
-#define GPIO_INT_RISE_EDGE 	0x0
-#define GPIO_INT_FALL_EDGE	0x1
-#define GPIO_INT_NONE		0x4
-
 /* Mandatory defines used globally */
 
 /* this is an i.MX27 CPU */
diff --git a/arch/arm/plat-mxc/include/mach/mx2x.h b/arch/arm/plat-mxc/include/mach/mx2x.h
new file mode 100644
index 000000000000..fc40d3ab8c5b
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mx2x.h
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * This contains hardware definitions that are common between i.MX21 and
+ * i.MX27.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+#ifndef __ASM_ARCH_MXC_MX2x_H__
+#define __ASM_ARCH_MXC_MX2x_H__
+
+#ifndef __ASM_ARCH_MXC_HARDWARE_H__
+#error "Do not include directly."
+#endif
+
+/* The following addresses are common between i.MX21 and i.MX27 */
+
+/* Register offests */
+#define AIPI_BASE_ADDR          0x10000000
+#define AIPI_BASE_ADDR_VIRT     0xF4000000
+#define AIPI_SIZE               SZ_1M
+
+#define DMA_BASE_ADDR           (AIPI_BASE_ADDR + 0x01000)
+#define WDOG_BASE_ADDR          (AIPI_BASE_ADDR + 0x02000)
+#define GPT1_BASE_ADDR          (AIPI_BASE_ADDR + 0x03000)
+#define GPT2_BASE_ADDR          (AIPI_BASE_ADDR + 0x04000)
+#define GPT3_BASE_ADDR          (AIPI_BASE_ADDR + 0x05000)
+#define PWM_BASE_ADDR           (AIPI_BASE_ADDR + 0x06000)
+#define RTC_BASE_ADDR           (AIPI_BASE_ADDR + 0x07000)
+#define KPP_BASE_ADDR           (AIPI_BASE_ADDR + 0x08000)
+#define OWIRE_BASE_ADDR         (AIPI_BASE_ADDR + 0x09000)
+#define UART1_BASE_ADDR         (AIPI_BASE_ADDR + 0x0A000)
+#define UART2_BASE_ADDR         (AIPI_BASE_ADDR + 0x0B000)
+#define UART3_BASE_ADDR         (AIPI_BASE_ADDR + 0x0C000)
+#define UART4_BASE_ADDR         (AIPI_BASE_ADDR + 0x0D000)
+#define CSPI1_BASE_ADDR         (AIPI_BASE_ADDR + 0x0E000)
+#define CSPI2_BASE_ADDR         (AIPI_BASE_ADDR + 0x0F000)
+#define SSI1_BASE_ADDR          (AIPI_BASE_ADDR + 0x10000)
+#define SSI2_BASE_ADDR          (AIPI_BASE_ADDR + 0x11000)
+#define I2C_BASE_ADDR           (AIPI_BASE_ADDR + 0x12000)
+#define SDHC1_BASE_ADDR         (AIPI_BASE_ADDR + 0x13000)
+#define SDHC2_BASE_ADDR         (AIPI_BASE_ADDR + 0x14000)
+#define GPIO_BASE_ADDR          (AIPI_BASE_ADDR + 0x15000)
+#define AUDMUX_BASE_ADDR        (AIPI_BASE_ADDR + 0x16000)
+#define CSPI3_BASE_ADDR         (AIPI_BASE_ADDR + 0x17000)
+#define LCDC_BASE_ADDR          (AIPI_BASE_ADDR + 0x21000)
+#define SLCDC_BASE_ADDR         (AIPI_BASE_ADDR + 0x22000)
+#define USBOTG_BASE_ADDR        (AIPI_BASE_ADDR + 0x24000)
+#define EMMA_PP_BASE_ADDR       (AIPI_BASE_ADDR + 0x26000)
+#define EMMA_PRP_BASE_ADDR      (AIPI_BASE_ADDR + 0x26400)
+#define CCM_BASE_ADDR           (AIPI_BASE_ADDR + 0x27000)
+#define SYSCTRL_BASE_ADDR       (AIPI_BASE_ADDR + 0x27800)
+#define JAM_BASE_ADDR           (AIPI_BASE_ADDR + 0x3E000)
+#define MAX_BASE_ADDR           (AIPI_BASE_ADDR + 0x3F000)
+
+#define AVIC_BASE_ADDR          0x10040000
+
+#define SAHB1_BASE_ADDR         0x80000000
+#define SAHB1_BASE_ADDR_VIRT    0xF4100000
+#define SAHB1_SIZE              SZ_1M
+
+#define CSI_BASE_ADDR           (SAHB1_BASE_ADDR + 0x0000)
+
+/*
+ * This macro defines the physical to virtual address mapping for all the
+ * peripheral modules. It is used by passing in the physical address as x
+ * and returning the virtual address. If the physical address is not mapped,
+ * it returns 0xDEADBEEF
+ */
+#define IO_ADDRESS(x)   \
+	(void __force __iomem *) \
+	(((x >= AIPI_BASE_ADDR) && (x < (AIPI_BASE_ADDR + AIPI_SIZE))) ? \
+		AIPI_IO_ADDRESS(x) : \
+	((x >= SAHB1_BASE_ADDR) && (x < (SAHB1_BASE_ADDR + SAHB1_SIZE))) ? \
+		SAHB1_IO_ADDRESS(x) : \
+	((x >= X_MEMC_BASE_ADDR) && (x < (X_MEMC_BASE_ADDR + X_MEMC_SIZE))) ? \
+		X_MEMC_IO_ADDRESS(x) : 0xDEADBEEF)
+
+/* define the address mapping macros: in physical address order */
+#define AIPI_IO_ADDRESS(x)  \
+	(((x) - AIPI_BASE_ADDR) + AIPI_BASE_ADDR_VIRT)
+
+#define AVIC_IO_ADDRESS(x)	AIPI_IO_ADDRESS(x)
+
+#define SAHB1_IO_ADDRESS(x)  \
+	(((x) - SAHB1_BASE_ADDR) + SAHB1_BASE_ADDR_VIRT)
+
+#define CS4_IO_ADDRESS(x)  \
+	(((x) - CS4_BASE_ADDR) + CS4_BASE_ADDR_VIRT)
+
+#define X_MEMC_IO_ADDRESS(x)  \
+	(((x) - X_MEMC_BASE_ADDR) + X_MEMC_BASE_ADDR_VIRT)
+
+#define PCMCIA_IO_ADDRESS(x) \
+	(((x) - X_MEMC_BASE_ADDR) + X_MEMC_BASE_ADDR_VIRT)
+
+/* fixed interrupt numbers */
+#define MXC_INT_LCDC		61
+#define MXC_INT_SLCDC		60
+#define MXC_INT_EMMAPP		52
+#define MXC_INT_EMMAPRP		51
+#define MXC_INT_DMACH15		47
+#define MXC_INT_DMACH14		46
+#define MXC_INT_DMACH13		45
+#define MXC_INT_DMACH12		44
+#define MXC_INT_DMACH11		43
+#define MXC_INT_DMACH10		42
+#define MXC_INT_DMACH9		41
+#define MXC_INT_DMACH8		40
+#define MXC_INT_DMACH7		39
+#define MXC_INT_DMACH6		38
+#define MXC_INT_DMACH5		37
+#define MXC_INT_DMACH4		36
+#define MXC_INT_DMACH3		35
+#define MXC_INT_DMACH2		34
+#define MXC_INT_DMACH1		33
+#define MXC_INT_DMACH0		32
+#define MXC_INT_CSI		31
+#define MXC_INT_NANDFC		29
+#define MXC_INT_PCMCIA		28
+#define MXC_INT_WDOG		27
+#define MXC_INT_GPT1		26
+#define MXC_INT_GPT2		25
+#define MXC_INT_GPT3		24
+#define MXC_INT_GPT		INT_GPT1
+#define MXC_INT_PWM		23
+#define MXC_INT_RTC		22
+#define MXC_INT_KPP		21
+#define MXC_INT_UART1		20
+#define MXC_INT_UART2		19
+#define MXC_INT_UART3		18
+#define MXC_INT_UART4		17
+#define MXC_INT_CSPI1		16
+#define MXC_INT_CSPI2		15
+#define MXC_INT_SSI1		14
+#define MXC_INT_SSI2		13
+#define MXC_INT_I2C		12
+#define MXC_INT_SDHC1		11
+#define MXC_INT_SDHC2		10
+#define MXC_INT_GPIO		8
+#define MXC_INT_CSPI3		6
+
+/* gpio and gpio based interrupt handling */
+#define GPIO_DR		 	0x1C
+#define GPIO_GDIR	 	0x00
+#define GPIO_PSR	 	0x24
+#define GPIO_ICR1	 	0x28
+#define GPIO_ICR2	 	0x2C
+#define GPIO_IMR	 	0x30
+#define GPIO_ISR	 	0x34
+#define GPIO_INT_LOW_LEV	0x3
+#define GPIO_INT_HIGH_LEV	0x2
+#define GPIO_INT_RISE_EDGE 	0x0
+#define GPIO_INT_FALL_EDGE	0x1
+#define GPIO_INT_NONE		0x4
+
+/* fixed DMA request numbers */
+#define DMA_REQ_CSI_RX          31
+#define DMA_REQ_CSI_STAT        30
+#define DMA_REQ_UART1_TX        27
+#define DMA_REQ_UART1_RX        26
+#define DMA_REQ_UART2_TX        25
+#define DMA_REQ_UART2_RX        24
+#define DMA_REQ_UART3_TX        23
+#define DMA_REQ_UART3_RX        22
+#define DMA_REQ_UART4_TX        21
+#define DMA_REQ_UART4_RX        20
+#define DMA_REQ_CSPI1_TX        19
+#define DMA_REQ_CSPI1_RX        18
+#define DMA_REQ_CSPI2_TX        17
+#define DMA_REQ_CSPI2_RX        16
+#define DMA_REQ_SSI1_TX1        15
+#define DMA_REQ_SSI1_RX1        14
+#define DMA_REQ_SSI1_TX0        13
+#define DMA_REQ_SSI1_RX0        12
+#define DMA_REQ_SSI2_TX1        11
+#define DMA_REQ_SSI2_RX1        10
+#define DMA_REQ_SSI2_TX0        9
+#define DMA_REQ_SSI2_RX0        8
+#define DMA_REQ_SDHC1           7
+#define DMA_REQ_SDHC2           6
+#define DMA_REQ_EXT             3
+#define DMA_REQ_CSPI3_TX        2
+#define DMA_REQ_CSPI3_RX        1
+
+#endif /* __ASM_ARCH_MXC_MX2x_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index bbd848e004d7..d6b0c472cd97 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -37,6 +37,10 @@
 # define cpu_is_mx27() (0)
 #endif
 
+#ifndef CONFIG_MACH_MX21
+# define cpu_is_mx21() (0)
+#endif
+
 #if defined(CONFIG_ARCH_MX3) || defined(CONFIG_ARCH_MX2)
 #define CSCR_U(n) (IO_ADDRESS(WEIM_BASE_ADDR) + n * 0x10)
 #define CSCR_L(n) (IO_ADDRESS(WEIM_BASE_ADDR) + n * 0x10 + 0x4)