Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f31405cc authored by Juergen Beisert's avatar Juergen Beisert Committed by Robert Schwebel
Browse files

i.MX27 CPU: Add basic i.MX27 CPU support 



Add basic i.MX27 CPU support

Signed-off-by: default avatarJuergen Beisert <j.beisert@pengutronix.de>
parent 604cbadc

arch/arm/mach-mx2/Kconfig

+6 −0
Original line number Original line Diff line number Diff line 
comment "MX2 family CPU support"

comment "MX2 family CPU support"

	depends on ARCH_MX2

	depends on ARCH_MX2





config MACH_MX27

	bool "i.MX27 support"

	depends on ARCH_MX2

	help

	  This enables support for Freescale's MX2 based i.MX27 processor.



comment "MX2 Platforms"

comment "MX2 Platforms"

	depends on ARCH_MX2
 
	depends on ARCH_MX2

arch/arm/mach-mx2/Makefile

+2 −0
Original line number Original line Diff line number Diff line
@@ -5,3 +5,5 @@ 
# Object file lists.

# Object file lists.





obj-y	:=  system.o generic.o devices.o serial.o

obj-y	:=  system.o generic.o devices.o serial.o



obj-$(CONFIG_MACH_MX27) += cpu_imx27.o

arch/arm/mach-mx2/cpu_imx27.c

0 → 100644
+63 −0
Original line number Original line Diff line number Diff line 
/*

 * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.

 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de

 *

 * 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.

 */



/*

 * i.MX27 specific CPU detection code

 */



#include <linux/io.h>

#include <linux/module.h>



#include <asm/hardware.h>



#include "crm_regs.h"



static int cpu_silicon_rev = -1;

static int cpu_partnumber;



static void query_silicon_parameter(void)

{

	u32 val;

	/*

	 * now we have access to the IO registers. As we need

	 * the silicon revision very early we read it here to

	 * avoid any further hooks

	*/

	val = __raw_readl(IO_ADDRESS(SYSCTRL_BASE_ADDR) + SYS_CHIP_ID);



	cpu_silicon_rev = (int)(val >> 28);

	cpu_partnumber = (int)((val >> 12) & 0xFFFF);

}



/*

 * Returns:

 *	the silicon revision of the cpu

 *	-EINVAL - not a mx27

 */

int mx27_revision(void)

{

	if (cpu_silicon_rev == -1)

		query_silicon_parameter();



	if (cpu_partnumber != 0x8821)

		return -EINVAL;



	return cpu_silicon_rev;

}

EXPORT_SYMBOL(mx27_revision);

include/asm-arm/arch-mxc/hardware.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -27,6 +27,9 @@ 
#endif

#endif





#ifdef CONFIG_ARCH_MX2

#ifdef CONFIG_ARCH_MX2

# ifdef CONFIG_MACH_MX27

#  include <asm/arch/mx27.h>

# endif

#endif

#endif





#include <asm/arch/mxc.h>

#include <asm/arch/mxc.h>

include/asm-arm/arch-mxc/mx27.h

0 → 100644
+302 −0
Original line number Original line Diff line number Diff line 
/*

 * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.

 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de

 *

 * 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_MX27_H__

#define __ASM_ARCH_MXC_MX27_H__



#ifndef __ASM_ARCH_MXC_HARDWARE_H__

#error "Do not include directly."

#endif



/* 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)

#define UART5_BASE_ADDR         (AIPI_BASE_ADDR + 0x1B000)

#define UART6_BASE_ADDR         (AIPI_BASE_ADDR + 0x1C000)

#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_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 */

#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 CS0_BASE_ADDR           0xC0000000

#define CS1_BASE_ADDR           0xC8000000

#define CS2_BASE_ADDR           0xD0000000

#define CS3_BASE_ADDR           0xD2000000

#define CS4_BASE_ADDR           0xD4000000

#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)   \

	(((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 interrput 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

#define MXC_INT_USB3		56

#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

#define MXC_INT_GPT6		2

#define MXC_INT_I2C2		1



/* fixed DMA request numbers */

#define DMA_REQ_NFC             37

#define DMA_REQ_SDHC3           36

#define DMA_REQ_UART6_RX        35

#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

#define CHIP_REV_2_0		0x01



#ifndef __ASSEMBLY__

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 */

#define cpu_is_mx27()		(1)



/* this CPU supports up to 192 GPIOs (don't forget the baseboard!) */

#define ARCH_NR_GPIOS		(192 + 16)



/* OS clock tick rate */

#define CLOCK_TICK_RATE         13300000



/* Start of RAM */

#define PHYS_OFFSET		SDRAM_BASE_ADDR



/* max interrupt lines count */

#define NR_IRQS			256



/* count of internal interrupt sources */

#define MXC_MAX_INT_LINES	64



#endif /* __ASM_ARCH_MXC_MX27_H__ */