i.MX27 CPU: Add basic i.MX27 CPU support
Add basic i.MX27 CPU support
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 23def05..6e7d724 100644
--- a/arch/arm/mach-mx2/Kconfig
+++ b/arch/arm/mach-mx2/Kconfig
@@ -1,5 +1,11 @@
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
diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
index f8f8ecb..c9eac3b 100644
--- a/arch/arm/mach-mx2/Makefile
+++ b/arch/arm/mach-mx2/Makefile
@@ -5,3 +5,5 @@
# Object file lists.
obj-y := system.o generic.o devices.o serial.o
+
+obj-$(CONFIG_MACH_MX27) += cpu_imx27.o
diff --git a/arch/arm/mach-mx2/cpu_imx27.c b/arch/arm/mach-mx2/cpu_imx27.c
new file mode 100644
index 0000000..d6b5c2e
--- /dev/null
+++ b/arch/arm/mach-mx2/cpu_imx27.c
@@ -0,0 +1,63 @@
+/*
+ * 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);
diff --git a/include/asm-arm/arch-mxc/hardware.h b/include/asm-arm/arch-mxc/hardware.h
index f841127..37cddba 100644
--- a/include/asm-arm/arch-mxc/hardware.h
+++ b/include/asm-arm/arch-mxc/hardware.h
@@ -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>
diff --git a/include/asm-arm/arch-mxc/mx27.h b/include/asm-arm/arch-mxc/mx27.h
new file mode 100644
index 0000000..212ecc2
--- /dev/null
+++ b/include/asm-arm/arch-mxc/mx27.h
@@ -0,0 +1,302 @@
+/*
+ * 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__ */
diff --git a/include/asm-arm/arch-mxc/mxc.h b/include/asm-arm/arch-mxc/mxc.h
index 3e1c4de..332eda4 100644
--- a/include/asm-arm/arch-mxc/mxc.h
+++ b/include/asm-arm/arch-mxc/mxc.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__ */