[uClinux-dev] [RFC] m68knommu: add support for Coldfire 5251/5253.

Steven King

2012-05-14 00:44:44 UTC

The 5251/5253 is quite similar to the 5249, adding basic support for it is
fairly trivial. This is a work in progress, not much support for anything
beyond the basic Coldfire core is implemented yet, but more patches to
come ;)

This patch is against the v3.4-rc6 for_next branch of the m68knommu.git

Signed-off-by: Steven King <sfking at fdwdc.com>
---
arch/m68k/Kconfig.cpu | 8 ++
arch/m68k/Makefile | 1 +
arch/m68k/include/asm/dma.h | 4 +-
arch/m68k/include/asm/gpio.h | 6 +-
arch/m68k/include/asm/m525xsim.h | 195 +++++++++++++++++++++++++++++++
arch/m68k/include/asm/mcfsim.h | 3 +
arch/m68k/include/asm/mcfuart.h | 4 +-
arch/m68k/platform/coldfire/Makefile | 1 +
arch/m68k/platform/coldfire/head.S | 6 +-
arch/m68k/platform/coldfire/intc-525x.c | 91 +++++++++++++++
arch/m68k/platform/coldfire/m525x.c | 58 +++++++++
drivers/spi/Kconfig | 2 +-
12 files changed, 369 insertions(+), 10 deletions(-)

diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index 8a9c767..2229ebc 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -166,6 +166,14 @@ config M5249
help
Motorola ColdFire 5249 processor support.

+config M525x
+ bool "MCF525x"
+ depends on !MMU
+ select COLDFIRE_SW_A7
+ select HAVE_MBAR
+ help
+ Freescale (Motorola) Coldfire 5251/5253 processor support.
+
config M527x
bool

diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
index 804f139..a1d59b1 100644
--- a/arch/m68k/Makefile
+++ b/arch/m68k/Makefile
@@ -43,6 +43,7 @@ cpuflags-$(CONFIG_M5275) := $(call cc-option,-mcpu=5275,-m5307)
cpuflags-$(CONFIG_M5272) := $(call cc-option,-mcpu=5272,-m5307)
cpuflags-$(CONFIG_M5271) := $(call cc-option,-mcpu=5271,-m5307)
cpuflags-$(CONFIG_M523x) := $(call cc-option,-mcpu=523x,-m5307)
+cpuflags-$(CONFIG_M525x) := $(call cc-option,-mcpu=5253,-m5200)
cpuflags-$(CONFIG_M5249) := $(call cc-option,-mcpu=5249,-m5200)
cpuflags-$(CONFIG_M520x) := $(call cc-option,-mcpu=5208,-m5200)
cpuflags-$(CONFIG_M5206e) := $(call cc-option,-mcpu=5206e,-m5200)
diff --git a/arch/m68k/include/asm/dma.h b/arch/m68k/include/asm/dma.h
index 6fbdfe8..9470641 100644
--- a/arch/m68k/include/asm/dma.h
+++ b/arch/m68k/include/asm/dma.h
@@ -33,7 +33,9 @@
* Set number of channels of DMA on ColdFire for different implementations.
*/
#if defined(CONFIG_M5249) || defined(CONFIG_M5307) || defined(CONFIG_M5407) || \
- defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
+ defined(CONFIG_M523x) || defined(CONFIG_M527x) || \
+ defined(CONFIG_M528x) || defined(CONFIG_M525x)
+
#define MAX_M68K_DMA_CHANNELS 4
#elif defined(CONFIG_M5272)
#define MAX_M68K_DMA_CHANNELS 1
diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h
index 00d0071..588cfda 100644
--- a/arch/m68k/include/asm/gpio.h
+++ b/arch/m68k/include/asm/gpio.h
@@ -55,7 +55,7 @@
#define mcfgpio_read(port) __raw_readw(port)
#define mcfgpio_write(data, port) __raw_writew(data, port)

-#elif defined(CONFIG_M5249)
+#elif defined(CONFIG_M5249) || defined(CONFIG_M525x)

/* These parts have GPIO organized by 32 bit ports */

@@ -116,7 +116,7 @@ static inline u32 __mcf_gpio_ppdr(unsigned gpio)
return MCFSIM_PBDAT;
else
return MCFSIM_PCDAT;
-#elif defined(CONFIG_M5249)
+#elif defined(CONFIG_M5249) || defined(CONFIG_M525x)
if (gpio < 32)
return MCFSIM2_GPIOREAD;
else
@@ -155,7 +155,7 @@ static inline u32 __mcf_gpio_podr(unsigned gpio)
return MCFSIM_PBDAT;
else
return MCFSIM_PCDAT;
-#elif defined(CONFIG_M5249)
+#elif defined(CONFIG_M5249) || defined(CONFIG_M525x)
if (gpio < 32)
return MCFSIM2_GPIOWRITE;
else
diff --git a/arch/m68k/include/asm/m525xsim.h b/arch/m68k/include/asm/m525xsim.h
new file mode 100644
index 0000000..3d62b9d
--- /dev/null
+++ b/arch/m68k/include/asm/m525xsim.h
@@ -0,0 +1,195 @@
+/****************************************************************************/
+
+/*
+ * m525xsim.h -- ColdFire 525x System Integration Module support.
+ *
+ * (C) Copyright 2012, Steven King <sfking at fdwdc.com>
+ * (C) Copyright 2002, Greg Ungerer (gerg at snapgear.com)
+ */
+
+/****************************************************************************/
+#ifndef m525xsim_h
+#define m525xsim_h
+/****************************************************************************/
+
+#define CPU_NAME "COLDFIRE(m525x)"
+#define CPU_INSTR_PER_JIFFY 3
+#define MCF_BUSCLK (MCF_CLK / 2)
+
+#include <asm/m52xxacr.h>
+
+/*
+ * The 525x has a second MBAR region, define its address.
+ */
+#define MCF_MBAR2 0x80000000
+
+/*
+ * Define the 525x SIM register set addresses.
+ */
+#define MCFSIM_RSR 0x00 /* Reset Status reg (r/w) */
+#define MCFSIM_SYPCR 0x01 /* System Protection reg (r/w)*/
+#define MCFSIM_SWIVR 0x02 /* SW Watchdog intr reg (r/w) */
+#define MCFSIM_SWSR 0x03 /* SW Watchdog service (r/w) */
+#define MCFSIM_MPARK 0x0C /* BUS Master Control Reg*/
+#define MCFSIM_IPR 0x40 /* Interrupt Pend reg (r/w) */
+#define MCFSIM_IMR 0x44 /* Interrupt Mask reg (r/w) */
+#define MCFSIM_ICR0 0x4c /* Intr Ctrl reg 0 (r/w) */
+#define MCFSIM_ICR1 0x4d /* Intr Ctrl reg 1 (r/w) */
+#define MCFSIM_ICR2 0x4e /* Intr Ctrl reg 2 (r/w) */
+#define MCFSIM_ICR3 0x4f /* Intr Ctrl reg 3 (r/w) */
+#define MCFSIM_ICR4 0x50 /* Intr Ctrl reg 4 (r/w) */
+#define MCFSIM_ICR5 0x51 /* Intr Ctrl reg 5 (r/w) */
+#define MCFSIM_ICR6 0x52 /* Intr Ctrl reg 6 (r/w) */
+#define MCFSIM_ICR7 0x53 /* Intr Ctrl reg 7 (r/w) */
+#define MCFSIM_ICR8 0x54 /* Intr Ctrl reg 8 (r/w) */
+#define MCFSIM_ICR9 0x55 /* Intr Ctrl reg 9 (r/w) */
+#define MCFSIM_ICR10 0x56 /* Intr Ctrl reg 10 (r/w) */
+#define MCFSIM_ICR11 0x57 /* Intr Ctrl reg 11 (r/w) */
+
+#define MCFSIM_CSAR0 0x80 /* CS 0 Address 0 reg (r/w) */
+#define MCFSIM_CSMR0 0x84 /* CS 0 Mask 0 reg (r/w) */
+#define MCFSIM_CSCR0 0x8a /* CS 0 Control reg (r/w) */
+#define MCFSIM_CSAR1 0x8c /* CS 1 Address reg (r/w) */
+#define MCFSIM_CSMR1 0x90 /* CS 1 Mask reg (r/w) */
+#define MCFSIM_CSCR1 0x96 /* CS 1 Control reg (r/w) */
+#define MCFSIM_CSAR2 0x98 /* CS 2 Address reg (r/w) */
+#define MCFSIM_CSMR2 0x9c /* CS 2 Mask reg (r/w) */
+#define MCFSIM_CSCR2 0xa2 /* CS 2 Control reg (r/w) */
+#define MCFSIM_CSAR3 0xa4 /* CS 3 Address reg (r/w) */
+#define MCFSIM_CSMR3 0xa8 /* CS 3 Mask reg (r/w) */
+#define MCFSIM_CSCR3 0xae /* CS 3 Control reg (r/w) */
+#define MCFSIM_CSAR4 0xb0 /* CS 4 Address reg (r/w) */
+#define MCFSIM_CSMR4 0xb4 /* CS 4 Mask reg (r/w) */
+#define MCFSIM_CSCR4 0xba /* CS 4 Control reg (r/w) */
+
+#define MCFSIM_DCR (MCF_MBAR + 0x100) /* DRAM Control */
+#define MCFSIM_DACR0 (MCF_MBAR + 0x108) /* DRAM 0 Addr/Ctrl */
+#define MCFSIM_DMR0 (MCF_MBAR + 0x10c) /* DRAM 0 Mask */
+
+/*
+ * Secondary Interrupt Controller (in MBAR2)
+*/
+#define MCFINTC2_INTBASE (MCF_MBAR2 + 0x168) /* Base Vector Reg */
+#define MCFINTC2_INTPRI1 (MCF_MBAR2 + 0x140) /* 0-7 priority */
+#define MCFINTC2_INTPRI2 (MCF_MBAR2 + 0x144) /* 8-15 priority */
+#define MCFINTC2_INTPRI3 (MCF_MBAR2 + 0x148) /* 16-23 priority */
+#define MCFINTC2_INTPRI4 (MCF_MBAR2 + 0x14c) /* 24-31 priority */
+#define MCFINTC2_INTPRI5 (MCF_MBAR2 + 0x150) /* 32-39 priority */
+#define MCFINTC2_INTPRI6 (MCF_MBAR2 + 0x154) /* 40-47 priority */
+#define MCFINTC2_INTPRI7 (MCF_MBAR2 + 0x158) /* 48-55 priority */
+#define MCFINTC2_INTPRI8 (MCF_MBAR2 + 0x15c) /* 56-63 priority */
+
+#define MCFINTC2_INTPRI_REG(i) (MCFINTC2_INTPRI1 + \
+ ((((i) - MCFINTC2_VECBASE) / 8) * 4))
+#define MCFINTC2_INTPRI_BITS(b, i) ((b) << (((i) % 8) * 4))
+
+/*
+ * Timer module.
+ */
+#define MCFTIMER_BASE1 (MCF_MBAR + 0x140) /* Base of TIMER1 */
+#define MCFTIMER_BASE2 (MCF_MBAR + 0x180) /* Base of TIMER2 */
+
+/*
+ * UART module.
+ */
+#define MCFUART_BASE0 (MCF_MBAR + 0x1c0) /* Base address UART0 */
+#define MCFUART_BASE1 (MCF_MBAR + 0x200) /* Base address UART1 */
+
+/*
+ * QSPI module.
+ */
+#define MCFQSPI_BASE (MCF_MBAR + 0x300) /* Base address QSPI */
+#define MCFQSPI_SIZE 0x40 /* Register set size */
+
+
+#define MCFQSPI_CS0 15
+#define MCFQSPI_CS1 16
+#define MCFQSPI_CS2 24
+
+/*
+ * I2C module.
+ */
+#define MCFI2C_BASE (MCF_MBAR + 280) /* Base addreess I2C0 */
+#define MCFI2C_SIZE 0x20 /* Register set size */
+
+#define MCFI2C_BASE1 (MCF_MBAR2 + 440) /* Base addreess I2C1 */
+#define MCFI2C_SIZE1 0x20 /* Register set size */
+/*
+ * DMA unit base addresses.
+ */
+#define MCFDMA_BASE0 (MCF_MBAR + 0x300) /* Base address DMA 0 */
+#define MCFDMA_BASE1 (MCF_MBAR + 0x340) /* Base address DMA 1 */
+#define MCFDMA_BASE2 (MCF_MBAR + 0x380) /* Base address DMA 2 */
+#define MCFDMA_BASE3 (MCF_MBAR + 0x3C0) /* Base address DMA 3 */
+
+/*
+ * Some symbol defines for the above...
+ */
+#define MCFSIM_SWDICR MCFSIM_ICR0 /* Watchdog timer ICR */
+#define MCFSIM_TIMER1ICR MCFSIM_ICR1 /* Timer 1 ICR */
+#define MCFSIM_TIMER2ICR MCFSIM_ICR2 /* Timer 2 ICR */
+#define MCFSIM_I2CICR MCFSIM_ICR3 /* I2C ICR */
+#define MCFSIM_UART1ICR MCFSIM_ICR4 /* UART 1 ICR */
+#define MCFSIM_UART2ICR MCFSIM_ICR5 /* UART 2 ICR */
+#define MCFSIM_DMA0ICR MCFSIM_ICR6 /* DMA 0 ICR */
+#define MCFSIM_DMA1ICR MCFSIM_ICR7 /* DMA 1 ICR */
+#define MCFSIM_DMA2ICR MCFSIM_ICR8 /* DMA 2 ICR */
+#define MCFSIM_DMA3ICR MCFSIM_ICR9 /* DMA 3 ICR */
+#define MCFSIM_QSPIICR MCFSIM_ICR10 /* QSPI ICR */
+
+/*
+ * Define system peripheral IRQ usage.
+ */
+#define MCF_IRQ_QSPI 28 /* QSPI, Level 4 */
+#define MCF_IRQ_I2C 29
+#define MCF_IRQ_TIMER 30 /* Timer0, Level 6 */
+#define MCF_IRQ_PROFILER 31 /* Timer1, Level 7 */
+
+#define MCF_IRQ_UART0 73 /* UART0 */
+#define MCF_IRQ_UART1 74 /* UART1 */
+
+/*
+ * Define the base interrupt for the second interrupt controller.
+ * We set it to 128, out of the way of the base interrupts, and plenty
+ * of room for its 64 interrupts.
+ */
+#define MCFINTC2_VECBASE 128
+
+#define MCF_IRQ_GPIO0 (MCFINTC2_VECBASE + 32)
+#define MCF_IRQ_GPIO1 (MCFINTC2_VECBASE + 33)
+#define MCF_IRQ_GPIO2 (MCFINTC2_VECBASE + 34)
+#define MCF_IRQ_GPIO3 (MCFINTC2_VECBASE + 35)
+#define MCF_IRQ_GPIO4 (MCFINTC2_VECBASE + 36)
+#define MCF_IRQ_GPIO5 (MCFINTC2_VECBASE + 37)
+#define MCF_IRQ_GPIO6 (MCFINTC2_VECBASE + 38)
+
+#define MCF_IRQ_USBWUP (MCFINTC2_VECBASE + 40)
+#define MCF_IRQ_I2C1 (MCFINTC2_VECBASE + 62)
+
+/*
+ * General purpose IO registers (in MBAR2).
+ */
+#define MCFSIM2_GPIOREAD (MCF_MBAR2 + 0x000) /* GPIO read values */
+#define MCFSIM2_GPIOWRITE (MCF_MBAR2 + 0x004) /* GPIO write values */
+#define MCFSIM2_GPIOENABLE (MCF_MBAR2 + 0x008) /* GPIO enabled */
+#define MCFSIM2_GPIOFUNC (MCF_MBAR2 + 0x00C) /* GPIO function */
+#define MCFSIM2_GPIO1READ (MCF_MBAR2 + 0x0B0) /* GPIO1 read values */
+#define MCFSIM2_GPIO1WRITE (MCF_MBAR2 + 0x0B4) /* GPIO1 write values */
+#define MCFSIM2_GPIO1ENABLE (MCF_MBAR2 + 0x0B8) /* GPIO1 enabled */
+#define MCFSIM2_GPIO1FUNC (MCF_MBAR2 + 0x0BC) /* GPIO1 function */
+
+#define MCFSIM2_GPIOINTSTAT (MCF_MBAR2 + 0xc0) /* GPIO intr status */
+#define MCFSIM2_GPIOINTCLEAR (MCF_MBAR2 + 0xc0) /* GPIO intr clear */
+#define MCFSIM2_GPIOINTENABLE (MCF_MBAR2 + 0xc4) /* GPIO intr enable */
+
+/*
+ * Generic GPIO support
+ */
+#define MCFGPIO_PIN_MAX 64
+#define MCFGPIO_IRQ_MAX 6
+#define MCFGPIO_IRQ_VECBASE MCF_IRQ_GPIO0
+
+/****************************************************************************/
+
+#endif /* m525xsim_h */
+
diff --git a/arch/m68k/include/asm/mcfsim.h b/arch/m68k/include/asm/mcfsim.h
index ebd0304..6871f62 100644
--- a/arch/m68k/include/asm/mcfsim.h
+++ b/arch/m68k/include/asm/mcfsim.h
@@ -27,6 +27,9 @@
#elif defined(CONFIG_M5249)
#include <asm/m5249sim.h>
#include <asm/mcfintc.h>
+#elif defined(CONFIG_M525x)
+#include <asm/m525xsim.h>
+#include <asm/mcfintc.h>
#elif defined(CONFIG_M527x)
#include <asm/m527xsim.h>
#elif defined(CONFIG_M5272)
diff --git a/arch/m68k/include/asm/mcfuart.h b/arch/m68k/include/asm/mcfuart.h
index 2d3bc77..b40c20f 100644
--- a/arch/m68k/include/asm/mcfuart.h
+++ b/arch/m68k/include/asm/mcfuart.h
@@ -43,8 +43,8 @@ struct mcf_platform_uart {
#define MCFUART_UFPD 0x30 /* Frac Prec. Divider (r/w) */
#endif
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
- defined(CONFIG_M5249) || defined(CONFIG_M5307) || \
- defined(CONFIG_M5407)
+ defined(CONFIG_M5249) || defined(CONFIG_M525x) || \
+ defined(CONFIG_M5307) || defined(CONFIG_M5407)
#define MCFUART_UIVR 0x30 /* Interrupt Vector (r/w) */
#endif
#define MCFUART_UIPR 0x34 /* Input Port (r) */
diff --git a/arch/m68k/platform/coldfire/Makefile b/arch/m68k/platform/coldfire/Makefile
index 76d389d..82f0764 100644
--- a/arch/m68k/platform/coldfire/Makefile
+++ b/arch/m68k/platform/coldfire/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_M5206e) += m5206.o timers.o intc.o reset.o
obj-$(CONFIG_M520x) += m520x.o pit.o intc-simr.o reset.o
obj-$(CONFIG_M523x) += m523x.o pit.o dma_timer.o intc-2.o reset.o
obj-$(CONFIG_M5249) += m5249.o timers.o intc.o intc-5249.o reset.o
+obj-$(CONFIG_M525x) += m525x.o timers.o intc.o intc-525x.o reset.o
obj-$(CONFIG_M527x) += m527x.o pit.o intc-2.o reset.o
obj-$(CONFIG_M5272) += m5272.o intc-5272.o timers.o
obj-$(CONFIG_M528x) += m528x.o pit.o intc-2.o reset.o
diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S
index c3db70e..4e0c9eb 100644
--- a/arch/m68k/platform/coldfire/head.S
+++ b/arch/m68k/platform/coldfire/head.S
@@ -31,9 +31,9 @@
.endm

#elif defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
- defined(CONFIG_M5249) || defined(CONFIG_M527x) || \
- defined(CONFIG_M528x) || defined(CONFIG_M5307) || \
- defined(CONFIG_M5407)
+ defined(CONFIG_M5249) || defined(CONFIG_M525x) || \
+ defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
+ defined(CONFIG_M5307) || defined(CONFIG_M5407)
/*
* Not all these devices have exactly the same DRAM controller,
* but the DCMR register is virtually identical - give or take
diff --git a/arch/m68k/platform/coldfire/intc-525x.c b/arch/m68k/platform/coldfire/intc-525x.c
new file mode 100644
index 0000000..b23204d
--- /dev/null
+++ b/arch/m68k/platform/coldfire/intc-525x.c
@@ -0,0 +1,91 @@
+/*
+ * intc2.c -- support for the 2nd INTC controller of the 525x
+ *
+ * (C) Copyright 2012, Steven King <sfking at fdwdc.com>
+ * (C) Copyright 2009, Greg Ungerer <gerg at snapgear.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+
+static void intc2_irq_gpio_mask(struct irq_data *d)
+{
+ u32 imr = readl(MCFSIM2_GPIOINTENABLE);
+ u32 type = irqd_get_trigger_type(d);
+ int irq = d->irq - MCF_IRQ_GPIO0;
+
+ if (type & IRQ_TYPE_EDGE_RISING)
+ imr &= ~(0x001 << irq);
+ if (type & IRQ_TYPE_EDGE_FALLING)
+ imr &= ~(0x100 << irq);
+ writel(imr, MCFSIM2_GPIOINTENABLE);
+}
+
+static void intc2_irq_gpio_unmask(struct irq_data *d)
+{
+ u32 imr = readl(MCFSIM2_GPIOINTENABLE);
+ u32 type = irqd_get_trigger_type(d);
+ int irq = d->irq - MCF_IRQ_GPIO0;
+
+ if (type & IRQ_TYPE_EDGE_RISING)
+ imr |= (0x001 << irq);
+ if (type & IRQ_TYPE_EDGE_FALLING)
+ imr |= (0x100 << irq);
+ writel(imr, MCFSIM2_GPIOINTENABLE);
+}
+
+static void intc2_irq_gpio_ack(struct irq_data *d)
+{
+ u32 imr = 0;
+ u32 type = irqd_get_trigger_type(d);
+ int irq = d->irq - MCF_IRQ_GPIO0;
+
+ if (type & IRQ_TYPE_EDGE_RISING)
+ imr |= (0x001 << irq);
+ if (type & IRQ_TYPE_EDGE_FALLING)
+ imr |= (0x100 << irq);
+ writel(imr, MCFSIM2_GPIOINTCLEAR);
+}
+
+static int intc2_irq_gpio_set_type(struct irq_data *d, unsigned int f)
+{
+ if (f & ~IRQ_TYPE_EDGE_BOTH)
+ return -EINVAL;
+ return 0;
+}
+
+static struct irq_chip intc2_irq_gpio_chip = {
+ .name = "CF-INTC2",
+ .irq_mask = intc2_irq_gpio_mask,
+ .irq_unmask = intc2_irq_gpio_unmask,
+ .irq_ack = intc2_irq_gpio_ack,
+ .irq_set_type = intc2_irq_gpio_set_type,
+};
+
+static int __init mcf_intc2_init(void)
+{
+ int irq;
+
+ /* set the interrupt base for the second interrupt controller */
+ writel(MCFINTC2_VECBASE, MCFINTC2_INTBASE);
+
+ /* GPIO interrupt sources */
+ for (irq = MCF_IRQ_GPIO0; (irq <= MCF_IRQ_GPIO6); irq++) {
+ irq_set_chip(irq, &intc2_irq_gpio_chip);
+ irq_set_handler(irq, handle_edge_irq);
+ }
+
+ return 0;
+}
+
+arch_initcall(mcf_intc2_init);
diff --git a/arch/m68k/platform/coldfire/m525x.c b/arch/m68k/platform/coldfire/m525x.c
new file mode 100644
index 0000000..7c56be2
--- /dev/null
+++ b/arch/m68k/platform/coldfire/m525x.c
@@ -0,0 +1,58 @@
+/***************************************************************************/
+
+/*
+ * 525x.c
+ *
+ * Copyright (C) 2012, Steven King <sfking at fdwdc.com>
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfgpio.h>
+
+/***************************************************************************/
+
+struct mcf_gpio_chip mcf_gpio_chips[] = {
+ MCFGPS(GPIO0, 0, 32, MCFSIM2_GPIOENABLE, MCFSIM2_GPIOWRITE, MCFSIM2_GPIOREAD),
+ MCFGPS(GPIO1, 32, 32, MCFSIM2_GPIO1ENABLE, MCFSIM2_GPIO1WRITE, MCFSIM2_GPIO1READ),
+};
+
+unsigned int mcf_gpio_chips_size = ARRAY_SIZE(mcf_gpio_chips);
+
+/***************************************************************************/
+
+
+static void __init m525x_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+ /* set the GPIO function for the qspi cs gpios */
+ /* FIXME: replace with pinmux/pinctl support */
+ u32 f = readl(MCFSIM2_GPIOFUNC);
+ f |= (1 << MCFQSPI_CS2) | (1 << MCFQSPI_CS1) | (1 << MCFQSPI_CS0);
+ writel(f, MCFSIM2_GPIOFUNC);
+
+ /* QSPI irq setup */
+ writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0,
+ MCF_MBAR + MCFSIM_QSPIICR);
+ mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI);
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_sched_init = hw_timer_init;
+
+ m525x_qspi_init();
+}
+
+/***************************************************************************/
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 00c0240..bfbc33d 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -125,7 +125,7 @@ config SPI_BUTTERFLY

config SPI_COLDFIRE_QSPI
tristate "Freescale Coldfire QSPI controller"
- depends on (M520x || M523x || M5249 || M527x || M528x || M532x)
+ depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
help
This enables support for the Coldfire QSPI controller in master
mode.