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
comment "MX2 family CPU support"
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"
depends on ARCH_MX2
......@@ -5,3 +5,5 @@
# Object file lists.
obj-y := system.o generic.o devices.o serial.o
obj-$(CONFIG_MACH_MX27) += cpu_imx27.o
/*
* 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);
......@@ -27,6 +27,9 @@
#endif
#ifdef CONFIG_ARCH_MX2
# ifdef CONFIG_MACH_MX27
# include <asm/arch/mx27.h>
# endif
#endif
#include <asm/arch/mxc.h>
......
/*
* 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__ */
......@@ -29,4 +29,8 @@
# define cpu_is_mx31() (0)
#endif
#ifndef CONFIG_MACH_MX27
# define cpu_is_mx27() (0)
#endif
#endif /* __ASM_ARCH_MXC_H__ */
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