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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 07:44:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 07:44:27 -0700
commit4b37ba90f49d4157ac5628f8d730d3505f176724 (patch)
treefdb3d04426f7b72ee86b1f06be746624494493c5 /arch/m68knommu/platform
parent229aebb873e29726b91e076161649cf45154b0bf (diff)
parent55f411de484a0136a77d050e877578a60bc2e094 (diff)
downloadlinux-4b37ba90f49d4157ac5628f8d730d3505f176724.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (21 commits) m68knommu: convert to using tracehook_report_syscall_* m68knommu: some boards use fixed phy for FEC ethernet m68knommu: support the external GPIO based interrupts of the 5272 m68knommu: mask of vector bits in exception word properly m68knommu: change to new flag variables m68knommu: Fix MCFUART_TXFIFOSIZE for m548x. m68knommu: add basic mmu-less m548x support m68knommu: .gitignore vmlinux.lds m68knommu: stop using __do_IRQ m68knommu: rename PT_OFF_VECTOR to PT_OFF_FORMATVEC. m68knommu: add support for Coldfire 547x/548x interrupt controller m68k{nommu}: Remove unused DEFINE's from asm-offsets.c m68knommu: whitespace cleanup in 68328/entry.S m68knommu: Document supported chips in intc-2.c and intc-simr.c. m68knommu: fix strace support for 68328/68360 m68knommu: fix default starting date arch/m68knommu: Removing dead 68328_SERIAL_UART2 config option arch/m68knommu: Removing dead RAM_{16,32}_MB config option arch/m68knommu: Removing dead M68KFPU_EMU config option arch/m68knommu: Removing dead RELOCATE config option ...
Diffstat (limited to 'arch/m68knommu/platform')
-rw-r--r--arch/m68knommu/platform/5206/Makefile4
-rw-r--r--arch/m68knommu/platform/5206e/Makefile4
-rw-r--r--arch/m68knommu/platform/520x/Makefile4
-rw-r--r--arch/m68knommu/platform/523x/Makefile4
-rw-r--r--arch/m68knommu/platform/5249/Makefile4
-rw-r--r--arch/m68knommu/platform/5272/Makefile4
-rw-r--r--arch/m68knommu/platform/5272/config.c16
-rw-r--r--arch/m68knommu/platform/5272/intc.c60
-rw-r--r--arch/m68knommu/platform/527x/Makefile4
-rw-r--r--arch/m68knommu/platform/528x/Makefile4
-rw-r--r--arch/m68knommu/platform/5307/Makefile4
-rw-r--r--arch/m68knommu/platform/532x/Makefile4
-rw-r--r--arch/m68knommu/platform/5407/Makefile4
-rw-r--r--arch/m68knommu/platform/548x/Makefile18
-rw-r--r--arch/m68knommu/platform/548x/config.c115
-rw-r--r--arch/m68knommu/platform/68328/entry.S36
-rw-r--r--arch/m68knommu/platform/68328/head-de2.S6
-rw-r--r--arch/m68knommu/platform/68328/head-ram.S27
-rw-r--r--arch/m68knommu/platform/68328/ints.c6
-rw-r--r--arch/m68knommu/platform/68360/entry.S13
-rw-r--r--arch/m68knommu/platform/68360/ints.c6
-rw-r--r--arch/m68knommu/platform/68VZ328/config.c5
-rw-r--r--arch/m68knommu/platform/coldfire/Makefile5
-rw-r--r--arch/m68knommu/platform/coldfire/entry.S4
-rw-r--r--arch/m68knommu/platform/coldfire/intc-2.c53
-rw-r--r--arch/m68knommu/platform/coldfire/intc-simr.c10
-rw-r--r--arch/m68knommu/platform/coldfire/intc.c8
-rw-r--r--arch/m68knommu/platform/coldfire/sltimers.c145
28 files changed, 455 insertions, 122 deletions
diff --git a/arch/m68knommu/platform/5206/Makefile b/arch/m68knommu/platform/5206/Makefile
index 113c33390064..b5db05625cfa 100644
--- a/arch/m68knommu/platform/5206/Makefile
+++ b/arch/m68knommu/platform/5206/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5206e/Makefile b/arch/m68knommu/platform/5206e/Makefile
index 113c33390064..b5db05625cfa 100644
--- a/arch/m68knommu/platform/5206e/Makefile
+++ b/arch/m68knommu/platform/5206e/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/520x/Makefile b/arch/m68knommu/platform/520x/Makefile
index 435ab3483dc1..ad3f4e5a57ce 100644
--- a/arch/m68knommu/platform/520x/Makefile
+++ b/arch/m68knommu/platform/520x/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/523x/Makefile b/arch/m68knommu/platform/523x/Makefile
index b8f9b45440c2..c04b8f71c88c 100644
--- a/arch/m68knommu/platform/523x/Makefile
+++ b/arch/m68knommu/platform/523x/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5249/Makefile b/arch/m68knommu/platform/5249/Makefile
index f56225d1582f..4bed30fd0073 100644
--- a/arch/m68knommu/platform/5249/Makefile
+++ b/arch/m68knommu/platform/5249/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5272/Makefile b/arch/m68knommu/platform/5272/Makefile
index 93673ef8e2c1..34110fc14301 100644
--- a/arch/m68knommu/platform/5272/Makefile
+++ b/arch/m68knommu/platform/5272/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5272/config.c b/arch/m68knommu/platform/5272/config.c
index 59278c0887d0..65bb582734e1 100644
--- a/arch/m68knommu/platform/5272/config.c
+++ b/arch/m68knommu/platform/5272/config.c
@@ -13,6 +13,8 @@
#include <linux/param.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/phy.h>
+#include <linux/phy_fixed.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
@@ -148,9 +150,23 @@ void __init config_BSP(char *commandp, int size)
/***************************************************************************/
+/*
+ * Some 5272 based boards have the FEC ethernet diectly connected to
+ * an ethernet switch. In this case we need to use the fixed phy type,
+ * and we need to declare it early in boot.
+ */
+static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
+ .link = 1,
+ .speed = 100,
+ .duplex = 0,
+};
+
+/***************************************************************************/
+
static int __init init_BSP(void)
{
m5272_uarts_init();
+ fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
return 0;
}
diff --git a/arch/m68knommu/platform/5272/intc.c b/arch/m68knommu/platform/5272/intc.c
index 7081e0a9720e..3cf681c177aa 100644
--- a/arch/m68knommu/platform/5272/intc.c
+++ b/arch/m68knommu/platform/5272/intc.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/coldfire.h>
@@ -29,6 +30,10 @@
* via a set of 4 "Interrupt Controller Registers" (ICR). There is a
* loose mapping of vector number to register and internal bits, but
* a table is the easiest and quickest way to map them.
+ *
+ * Note that the external interrupts are edge triggered (unlike the
+ * internal interrupt sources which are level triggered). Which means
+ * they also need acknowledgeing via acknowledge bits.
*/
struct irqmap {
unsigned char icr;
@@ -68,6 +73,11 @@ static struct irqmap intc_irqmap[MCFINT_VECMAX - MCFINT_VECBASE] = {
/*MCF_IRQ_SWTO*/ { .icr = MCFSIM_ICR4, .index = 16, .ack = 0, },
};
+/*
+ * The act of masking the interrupt also has a side effect of 'ack'ing
+ * an interrupt on this irq (for the external irqs). So this mask function
+ * is also an ack_mask function.
+ */
static void intc_irq_mask(unsigned int irq)
{
if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) {
@@ -95,7 +105,9 @@ static void intc_irq_ack(unsigned int irq)
irq -= MCFINT_VECBASE;
if (intc_irqmap[irq].ack) {
u32 v;
- v = 0xd << intc_irqmap[irq].index;
+ v = readl(MCF_MBAR + intc_irqmap[irq].icr);
+ v &= (0x7 << intc_irqmap[irq].index);
+ v |= (0x8 << intc_irqmap[irq].index);
writel(v, MCF_MBAR + intc_irqmap[irq].icr);
}
}
@@ -103,21 +115,47 @@ static void intc_irq_ack(unsigned int irq)
static int intc_irq_set_type(unsigned int irq, unsigned int type)
{
- /* We can set the edge type here for external interrupts */
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) {
+ irq -= MCFINT_VECBASE;
+ if (intc_irqmap[irq].ack) {
+ u32 v;
+ v = readl(MCF_MBAR + MCFSIM_PITR);
+ if (type == IRQ_TYPE_EDGE_FALLING)
+ v &= ~(0x1 << (32 - irq));
+ else
+ v |= (0x1 << (32 - irq));
+ writel(v, MCF_MBAR + MCFSIM_PITR);
+ }
+ }
return 0;
}
+/*
+ * Simple flow handler to deal with the external edge triggered interrupts.
+ * We need to be careful with the masking/acking due to the side effects
+ * of masking an interrupt.
+ */
+static void intc_external_irq(unsigned int irq, struct irq_desc *desc)
+{
+ kstat_incr_irqs_this_cpu(irq, desc);
+ desc->status |= IRQ_INPROGRESS;
+ desc->chip->ack(irq);
+ handle_IRQ_event(irq, desc->action);
+ desc->status &= ~IRQ_INPROGRESS;
+}
+
static struct irq_chip intc_irq_chip = {
.name = "CF-INTC",
.mask = intc_irq_mask,
.unmask = intc_irq_unmask,
+ .mask_ack = intc_irq_mask,
.ack = intc_irq_ack,
.set_type = intc_irq_set_type,
};
void __init init_IRQ(void)
{
- int irq;
+ int irq, edge;
init_vectors();
@@ -128,11 +166,17 @@ void __init init_IRQ(void)
writel(0x88888888, MCF_MBAR + MCFSIM_ICR4);
for (irq = 0; (irq < NR_IRQS); irq++) {
- irq_desc[irq].status = IRQ_DISABLED;
- irq_desc[irq].action = NULL;
- irq_desc[irq].depth = 1;
- irq_desc[irq].chip = &intc_irq_chip;
- intc_irq_set_type(irq, 0);
+ set_irq_chip(irq, &intc_irq_chip);
+ edge = 0;
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX))
+ edge = intc_irqmap[irq - MCFINT_VECBASE].ack;
+ if (edge) {
+ set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+ set_irq_handler(irq, intc_external_irq);
+ } else {
+ set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
+ set_irq_handler(irq, handle_level_irq);
+ }
}
}
diff --git a/arch/m68knommu/platform/527x/Makefile b/arch/m68knommu/platform/527x/Makefile
index 3d90e6d92459..6ac4b57370ea 100644
--- a/arch/m68knommu/platform/527x/Makefile
+++ b/arch/m68knommu/platform/527x/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/528x/Makefile b/arch/m68knommu/platform/528x/Makefile
index 3d90e6d92459..6ac4b57370ea 100644
--- a/arch/m68knommu/platform/528x/Makefile
+++ b/arch/m68knommu/platform/528x/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5307/Makefile b/arch/m68knommu/platform/5307/Makefile
index 6de526976828..d4293b791f2e 100644
--- a/arch/m68knommu/platform/5307/Makefile
+++ b/arch/m68knommu/platform/5307/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/532x/Makefile b/arch/m68knommu/platform/532x/Makefile
index 4cc23245bcd1..ce01669399c6 100644
--- a/arch/m68knommu/platform/532x/Makefile
+++ b/arch/m68knommu/platform/532x/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/5407/Makefile b/arch/m68knommu/platform/5407/Makefile
index dee62c5dbaa6..e83fe148eddc 100644
--- a/arch/m68knommu/platform/5407/Makefile
+++ b/arch/m68knommu/platform/5407/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
diff --git a/arch/m68knommu/platform/548x/Makefile b/arch/m68knommu/platform/548x/Makefile
new file mode 100644
index 000000000000..e6035e7a2d3f
--- /dev/null
+++ b/arch/m68knommu/platform/548x/Makefile
@@ -0,0 +1,18 @@
+#
+# Makefile for the m68knommu linux kernel.
+#
+
+#
+# If you want to play with the HW breakpoints then you will
+# need to add define this, which will give you a stack backtrace
+# on the console port whenever a DBG interrupt occurs. You have to
+# set up you HW breakpoints to trigger a DBG interrupt:
+#
+# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
+# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+#
+
+asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
+
+obj-y := config.o
+
diff --git a/arch/m68knommu/platform/548x/config.c b/arch/m68knommu/platform/548x/config.c
new file mode 100644
index 000000000000..9888846bd1cf
--- /dev/null
+++ b/arch/m68knommu/platform/548x/config.c
@@ -0,0 +1,115 @@
+/***************************************************************************/
+
+/*
+ * linux/arch/m68knommu/platform/548x/config.c
+ *
+ * Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be>
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/m548xsim.h>
+#include <asm/mcfuart.h>
+#include <asm/m548xgpt.h>
+
+/***************************************************************************/
+
+static struct mcf_platform_uart m548x_uart_platform[] = {
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE1,
+ .irq = 64 + 35,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE2,
+ .irq = 64 + 34,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE3,
+ .irq = 64 + 33,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE4,
+ .irq = 64 + 32,
+ },
+};
+
+static struct platform_device m548x_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m548x_uart_platform,
+};
+
+static struct platform_device *m548x_devices[] __initdata = {
+ &m548x_uart,
+};
+
+
+/***************************************************************************/
+
+static void __init m548x_uart_init_line(int line, int irq)
+{
+ int rts_cts;
+
+ /* enable io pins */
+ switch (line) {
+ case 0:
+ rts_cts = 0; break;
+ case 1:
+ rts_cts = MCF_PAR_PSC_RTS_RTS; break;
+ case 2:
+ rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break;
+ case 3:
+ rts_cts = 0; break;
+ }
+ __raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD,
+ MCF_MBAR + MCF_PAR_PSC(line));
+}
+
+static void __init m548x_uarts_init(void)
+{
+ const int nrlines = ARRAY_SIZE(m548x_uart_platform);
+ int line;
+
+ for (line = 0; (line < nrlines); line++)
+ m548x_uart_init_line(line, m548x_uart_platform[line].irq);
+}
+
+/***************************************************************************/
+
+static void mcf548x_reset(void)
+{
+ /* disable interrupts and enable the watchdog */
+ asm("movew #0x2700, %sr\n");
+ __raw_writel(0, MCF_MBAR + MCF_GPT_GMS0);
+ __raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0);
+ __raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
+ MCF_MBAR + MCF_GPT_GMS0);
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_reset = mcf548x_reset;
+ m548x_uarts_init();
+}
+
+/***************************************************************************/
+
+static int __init init_BSP(void)
+{
+
+ platform_add_devices(m548x_devices, ARRAY_SIZE(m548x_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/
diff --git a/arch/m68knommu/platform/68328/entry.S b/arch/m68knommu/platform/68328/entry.S
index 9d80d2c42866..27241e16a526 100644
--- a/arch/m68knommu/platform/68328/entry.S
+++ b/arch/m68knommu/platform/68328/entry.S
@@ -43,10 +43,10 @@ badsys:
jra ret_from_exception
do_trace:
- movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/
+ movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/
subql #4,%sp
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_enter
RESTORE_SWITCH_STACK
addql #4,%sp
movel %sp@(PT_OFF_ORIG_D0),%d1
@@ -57,10 +57,10 @@ do_trace:
lea sys_call_table, %a0
jbsr %a0@(%d1)
-1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */
+1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_leave
ret_from_signal:
RESTORE_SWITCH_STACK
@@ -71,16 +71,16 @@ ENTRY(system_call)
SAVE_ALL
/* save top of frame*/
- pea %sp@
- jbsr set_esp0
- addql #4,%sp
+ pea %sp@
+ jbsr set_esp0
+ addql #4,%sp
movel %sp@(PT_OFF_ORIG_D0),%d0
movel %sp,%d1 /* get thread_info pointer */
andl #-THREAD_SIZE,%d1
movel %d1,%a2
- btst #TIF_SYSCALL_TRACE,%a2@(TI_FLAGS)
+ btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8)
jne do_trace
cmpl #NR_syscalls,%d0
jcc badsys
@@ -88,10 +88,10 @@ ENTRY(system_call)
lea sys_call_table,%a0
movel %a0@(%d0), %a0
jbsr %a0@
- movel %d0,%sp@(PT_OFF_D0) /* save the return value*/
+ movel %d0,%sp@(PT_OFF_D0) /* save the return value*/
ret_from_exception:
- btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel*/
+ btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel*/
jeq Luser_return /* if so, skip resched, signals*/
Lkernel_return:
@@ -133,7 +133,7 @@ Lreturn:
*/
inthandler1:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -144,7 +144,7 @@ inthandler1:
inthandler2:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -155,7 +155,7 @@ inthandler2:
inthandler3:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -166,7 +166,7 @@ inthandler3:
inthandler4:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -177,7 +177,7 @@ inthandler4:
inthandler5:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -188,7 +188,7 @@ inthandler5:
inthandler6:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -199,7 +199,7 @@ inthandler6:
inthandler7:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
@@ -210,7 +210,7 @@ inthandler7:
inthandler:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and #0x3ff, %d0
movel %sp,%sp@-
diff --git a/arch/m68knommu/platform/68328/head-de2.S b/arch/m68knommu/platform/68328/head-de2.S
index 92d96456d363..f632fdcb93e9 100644
--- a/arch/m68knommu/platform/68328/head-de2.S
+++ b/arch/m68knommu/platform/68328/head-de2.S
@@ -1,11 +1,5 @@
-#if defined(CONFIG_RAM32MB)
-#define MEM_END 0x02000000 /* Memory size 32Mb */
-#elif defined(CONFIG_RAM16MB)
-#define MEM_END 0x01000000 /* Memory size 16Mb */
-#else
#define MEM_END 0x00800000 /* Memory size 8Mb */
-#endif
#undef CRT_DEBUG
diff --git a/arch/m68knommu/platform/68328/head-ram.S b/arch/m68knommu/platform/68328/head-ram.S
index 252b80b02038..7f1aeeacb219 100644
--- a/arch/m68knommu/platform/68328/head-ram.S
+++ b/arch/m68knommu/platform/68328/head-ram.S
@@ -67,33 +67,6 @@ pclp1:
beq pclp1
#endif /* DEBUG */
-#ifdef CONFIG_RELOCATE
- /* Copy me to RAM */
- moveal #__rom_start, %a0
- moveal #_stext, %a1
- moveal #_edata, %a2
-
- /* Copy %a0 to %a1 until %a1 == %a2 */
-LD1:
- movel %a0@+, %d0
- movel %d0, %a1@+
- cmpal %a1, %a2
- bhi LD1
-
-#ifdef DEBUG
- moveq #74, %d7 /* 'J' */
- moveb %d7,0xfffff907 /* No absolute addresses */
-pclp2:
- movew 0xfffff906, %d7
- andw #0x2000, %d7
- beq pclp2
-#endif /* DEBUG */
- /* jump into the RAM copy */
- jmp ram_jump
-ram_jump:
-
-#endif /* CONFIG_RELOCATE */
-
#ifdef DEBUG
moveq #82, %d7 /* 'R' */
moveb %d7,0xfffff907 /* No absolute addresses */
diff --git a/arch/m68knommu/platform/68328/ints.c b/arch/m68knommu/platform/68328/ints.c
index b91ee85d4b5d..865852806a17 100644
--- a/arch/m68knommu/platform/68328/ints.c
+++ b/arch/m68knommu/platform/68328/ints.c
@@ -179,10 +179,8 @@ void __init init_IRQ(void)
IMR = ~0;
for (i = 0; (i < NR_IRQS); i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = NULL;
- irq_desc[i].depth = 1;
- irq_desc[i].chip = &intc_irq_chip;
+ set_irq_chip(irq, &intc_irq_chip);
+ set_irq_handler(irq, handle_level_irq);
}
}
diff --git a/arch/m68knommu/platform/68360/entry.S b/arch/m68knommu/platform/68360/entry.S
index 6d3460a39cac..c131c6e1d92d 100644
--- a/arch/m68knommu/platform/68360/entry.S
+++ b/arch/m68knommu/platform/68360/entry.S
@@ -42,7 +42,7 @@ do_trace:
movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/
subql #4,%sp
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_enter
RESTORE_SWITCH_STACK
addql #4,%sp
movel %sp@(PT_OFF_ORIG_D0),%d1
@@ -56,7 +56,7 @@ do_trace:
1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_leave
ret_from_signal:
RESTORE_SWITCH_STACK
@@ -71,7 +71,12 @@ ENTRY(system_call)
jbsr set_esp0
addql #4,%sp
- btst #PF_TRACESYS_BIT,%a2@(TASK_FLAGS+PF_TRACESYS_OFF)
+ movel %sp@(PT_OFF_ORIG_D0),%d0
+
+ movel %sp,%d1 /* get thread_info pointer */
+ andl #-THREAD_SIZE,%d1
+ movel %d1,%a2
+ btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8)
jne do_trace
cmpl #NR_syscalls,%d0
jcc badsys
@@ -124,7 +129,7 @@ Lreturn:
*/
inthandler:
SAVE_ALL
- movew %sp@(PT_OFF_VECTOR), %d0
+ movew %sp@(PT_OFF_FORMATVEC), %d0
and.l #0x3ff, %d0
lsr.l #0x02, %d0
diff --git a/arch/m68knommu/platform/68360/ints.c b/arch/m68knommu/platform/68360/ints.c
index 6f22970d8c20..ad96ab1051f0 100644
--- a/arch/m68knommu/platform/68360/ints.c
+++ b/arch/m68knommu/platform/68360/ints.c
@@ -132,10 +132,8 @@ void init_IRQ(void)
pquicc->intr_cimr = 0x00000000;
for (i = 0; (i < NR_IRQS); i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = NULL;
- irq_desc[i].depth = 1;
- irq_desc[i].chip = &intc_irq_chip;
+ set_irq_chip(irq, &intc_irq_chip);
+ set_irq_handler(irq, handle_level_irq);
}
}
diff --git a/arch/m68knommu/platform/68VZ328/config.c b/arch/m68knommu/platform/68VZ328/config.c
index fc5c63054e98..eabaabe8af36 100644
--- a/arch/m68knommu/platform/68VZ328/config.c
+++ b/arch/m68knommu/platform/68VZ328/config.c
@@ -90,11 +90,6 @@ static void init_hardware(char *command, int size)
PDIQEG &= ~PD(1);
PDIRQEN |= PD(1); /* IRQ enabled */
-#ifdef CONFIG_68328_SERIAL_UART2
- /* Enable RXD TXD port bits to enable UART2 */
- PJSEL &= ~(PJ(5) | PJ(4));
-#endif
-
#ifdef CONFIG_INIT_LCD
/* initialize LCD controller */
LSSA = (long) screen_bits;
diff --git a/arch/m68knommu/platform/coldfire/Makefile b/arch/m68knommu/platform/coldfire/Makefile
index f72a0e5d9996..45f501fa4525 100644
--- a/arch/m68knommu/platform/coldfire/Makefile
+++ b/arch/m68knommu/platform/coldfire/Makefile
@@ -8,8 +8,8 @@
# on the console port whenever a DBG interrupt occurs. You have to
# set up you HW breakpoints to trigger a DBG interrupt:
#
-# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
-# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
+# ccflags-y := -DTRAP_DBG_INTERRUPT
+# asflags-y := -DTRAP_DBG_INTERRUPT
#
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
@@ -26,6 +26,7 @@ obj-$(CONFIG_M528x) += pit.o intc-2.o
obj-$(CONFIG_M5307) += timers.o intc.o
obj-$(CONFIG_M532x) += timers.o intc-simr.o
obj-$(CONFIG_M5407) += timers.o intc.o
+obj-$(CONFIG_M548x) += sltimers.o intc-2.o
obj-y += pinmux.o gpio.o
extra-y := head.o
diff --git a/arch/m68knommu/platform/coldfire/entry.S b/arch/m68knommu/platform/coldfire/entry.S
index cd79d7e92ce6..5e92bed94b7e 100644
--- a/arch/m68knommu/platform/coldfire/entry.S
+++ b/arch/m68knommu/platform/coldfire/entry.S
@@ -88,7 +88,7 @@ ENTRY(system_call)
movel %d2,PT_OFF_D0(%sp) /* on syscall entry */
subql #4,%sp
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_enter
RESTORE_SWITCH_STACK
addql #4,%sp
movel %d3,%a0
@@ -96,7 +96,7 @@ ENTRY(system_call)
movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
- jbsr syscall_trace
+ jbsr syscall_trace_leave
ret_from_signal:
RESTORE_SWITCH_STACK
diff --git a/arch/m68knommu/platform/coldfire/intc-2.c b/arch/m68knommu/platform/coldfire/intc-2.c
index 5598c8b8661f..85daa2b3001a 100644
--- a/arch/m68knommu/platform/coldfire/intc-2.c
+++ b/arch/m68knommu/platform/coldfire/intc-2.c
@@ -1,5 +1,11 @@
/*
- * intc-1.c
+ * intc-2.c
+ *
+ * General interrupt controller code for the many ColdFire cores that use
+ * interrupt controllers with 63 interrupt sources, organized as 56 fully-
+ * programmable + 7 fixed-level interrupt sources. This includes the 523x
+ * family, the 5270, 5271, 5274, 5275, and the 528x family which have two such
+ * controllers, and the 547x and 548x families which have only one of them.
*
* (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com>
*
@@ -19,21 +25,37 @@
#include <asm/traps.h>
/*
- * Each vector needs a unique priority and level asscoiated with it.
+ * Bit definitions for the ICR family of registers.
+ */
+#define MCFSIM_ICR_LEVEL(l) ((l)<<3) /* Level l intr */
+#define MCFSIM_ICR_PRI(p) (p) /* Priority p intr */
+
+/*
+ * Each vector needs a unique priority and level associated with it.
* We don't really care so much what they are, we don't rely on the
- * tranditional priority interrupt scheme of the m68k/ColdFire.
+ * traditional priority interrupt scheme of the m68k/ColdFire.
*/
-static u8 intc_intpri = 0x36;
+static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6);
+
+#ifdef MCFICM_INTC1
+#define NR_VECS 128
+#else
+#define NR_VECS 64
+#endif
static void intc_irq_mask(unsigned int irq)
{
- if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) {
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) {
unsigned long imraddr;
u32 val, imrbit;
irq -= MCFINT_VECBASE;
imraddr = MCF_IPSBAR;
+#ifdef MCFICM_INTC1
imraddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0;
+#else
+ imraddr += MCFICM_INTC0;
+#endif
imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL;
imrbit = 0x1 << (irq & 0x1f);
@@ -44,13 +66,17 @@ static void intc_irq_mask(unsigned int irq)
static void intc_irq_unmask(unsigned int irq)
{
- if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) {
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) {
unsigned long intaddr, imraddr, icraddr;
u32 val, imrbit;
irq -= MCFINT_VECBASE;
intaddr = MCF_IPSBAR;
+#ifdef MCFICM_INTC1
intaddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0;
+#else
+ intaddr += MCFICM_INTC0;
+#endif
imraddr = intaddr + ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL);
icraddr = intaddr + MCFINTC_ICR0 + (irq & 0x3f);
imrbit = 0x1 << (irq & 0x1f);
@@ -67,10 +93,16 @@ static void intc_irq_unmask(unsigned int irq)
}
}
+static int intc_irq_set_type(unsigned int irq, unsigned int type)
+{
+ return 0;
+}
+
static struct irq_chip intc_irq_chip = {
.name = "CF-INTC",
.mask = intc_irq_mask,
.unmask = intc_irq_unmask,
+ .set_type = intc_irq_set_type,
};
void __init init_IRQ(void)
@@ -81,13 +113,14 @@ void __init init_IRQ(void)
/* Mask all interrupt sources */
__raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);
+#ifdef MCFICM_INTC1
__raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC1 + MCFINTC_IMRL);
+#endif
for (irq = 0; (irq < NR_IRQS); irq++) {
- irq_desc[irq].status = IRQ_DISABLED;
- irq_desc[irq].action = NULL;
- irq_desc[irq].depth = 1;
- irq_desc[irq].chip = &intc_irq_chip;
+ set_irq_chip(irq, &intc_irq_chip);
+ set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
+ set_irq_handler(irq, handle_level_irq);
}
}
diff --git a/arch/m68knommu/platform/coldfire/intc-simr.c b/arch/m68knommu/platform/coldfire/intc-simr.c
index 1b01e79c2f63..bb7048636140 100644
--- a/arch/m68knommu/platform/coldfire/intc-simr.c
+++ b/arch/m68knommu/platform/coldfire/intc-simr.c
@@ -1,6 +1,8 @@
/*
* intc-simr.c
*
+ * Interrupt controller code for the ColdFire 5208, 5207 & 532x parts.
+ *
* (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com>
*
* This file is subject to the terms and conditions of the GNU General Public
@@ -68,11 +70,9 @@ void __init init_IRQ(void)
__raw_writeb(0xff, MCFINTC1_SIMR);
for (irq = 0; (irq < NR_IRQS); irq++) {
- irq_desc[irq].status = IRQ_DISABLED;
- irq_desc[irq].action = NULL;
- irq_desc[irq].depth = 1;
- irq_desc[irq].chip = &intc_irq_chip;
- intc_irq_set_type(irq, 0);
+ set_irq_chip(irq, &intc_irq_chip);
+ set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
+ set_irq_handler(irq, handle_level_irq);
}
}
diff --git a/arch/m68knommu/platform/coldfire/intc.c b/arch/m68knommu/platform/coldfire/intc.c
index a4560c86db71..60d2fcbe182b 100644
--- a/arch/m68knommu/platform/coldfire/intc.c
+++ b/arch/m68knommu/platform/coldfire/intc.c
@@ -143,11 +143,9 @@ void __init init_IRQ(void)
mcf_maskimr(0xffffffff);
for (irq = 0; (irq < NR_IRQS); irq++) {
- irq_desc[irq].status = IRQ_DISABLED;
- irq_desc[irq].action = NULL;
- irq_desc[irq].depth = 1;
- irq_desc[irq].chip = &intc_irq_chip;
- intc_irq_set_type(irq, 0);
+ set_irq_chip(irq, &intc_irq_chip);
+ set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
+ set_irq_handler(irq, handle_level_irq);
}
}
diff --git a/arch/m68knommu/platform/coldfire/sltimers.c b/arch/m68knommu/platform/coldfire/sltimers.c
new file mode 100644
index 000000000000..0a1b937c3e18
--- /dev/null
+++ b/arch/m68knommu/platform/coldfire/sltimers.c
@@ -0,0 +1,145 @@
+/***************************************************************************/
+
+/*
+ * sltimers.c -- generic ColdFire slice timer support.
+ *
+ * Copyright (C) 2009-2010, Philippe De Muyter <phdm@macqel.be>
+ * based on
+ * timers.c -- generic ColdFire hardware timer support.
+ * Copyright (C) 1999-2008, Greg Ungerer <gerg@snapgear.com>
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/profile.h>
+#include <linux/clocksource.h>
+#include <asm/io.h>
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfslt.h>
+#include <asm/mcfsim.h>
+
+/***************************************************************************/
+
+#ifdef CONFIG_HIGHPROFILE
+
+/*
+ * By default use Slice Timer 1 as the profiler clock timer.
+ */
+#define PA(a) (MCF_MBAR + MCFSLT_TIMER1 + (a))
+
+/*
+ * Choose a reasonably fast profile timer. Make it an odd value to
+ * try and get good coverage of kernel operations.
+ */
+#define PROFILEHZ 1013
+
+irqreturn_t mcfslt_profile_tick(int irq, void *dummy)
+{
+ /* Reset Slice Timer 1 */
+ __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, PA(MCFSLT_SSR));
+ if (current->pid)
+ profile_tick(CPU_PROFILING);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction mcfslt_profile_irq = {
+ .name = "profile timer",
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .handler = mcfslt_profile_tick,
+};
+
+void mcfslt_profile_init(void)
+{
+ printk(KERN_INFO "PROFILE: lodging TIMER 1 @ %dHz as profile timer\n",
+ PROFILEHZ);
+
+ setup_irq(MCF_IRQ_PROFILER, &mcfslt_profile_irq);
+
+ /* Set up TIMER 2 as high speed profile clock */
+ __raw_writel(MCF_BUSCLK / PROFILEHZ - 1, PA(MCFSLT_STCNT));
+ __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN,
+ PA(MCFSLT_SCR));
+
+}
+
+#endif /* CONFIG_HIGHPROFILE */
+
+/***************************************************************************/
+
+/*
+ * By default use Slice Timer 0 as the system clock timer.
+ */
+#define TA(a) (MCF_MBAR + MCFSLT_TIMER0 + (a))
+
+static u32 mcfslt_cycles_per_jiffy;
+static u32 mcfslt_cnt;
+
+static irqreturn_t mcfslt_tick(int irq, void *dummy)
+{
+ /* Reset Slice Timer 0 */
+ __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, TA(MCFSLT_SSR));
+ mcfslt_cnt += mcfslt_cycles_per_jiffy;
+ return arch_timer_interrupt(irq, dummy);
+}
+
+static struct irqaction mcfslt_timer_irq = {
+ .name = "timer",
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .handler = mcfslt_tick,
+};
+
+static cycle_t mcfslt_read_clk(struct clocksource *cs)
+{
+ unsigned long flags;
+ u32 cycles;
+ u16 scnt;
+
+ local_irq_save(flags);
+ scnt = __raw_readl(TA(MCFSLT_SCNT));
+ cycles = mcfslt_cnt;
+ local_irq_restore(flags);
+
+ /* substract because slice timers count down */
+ return cycles - scnt;
+}
+
+static struct clocksource mcfslt_clk = {
+ .name = "slt",
+ .rating = 250,
+ .read = mcfslt_read_clk,
+ .shift = 20,
+ .mask = CLOCKSOURCE_MASK(32),
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+void hw_timer_init(void)
+{
+ mcfslt_cycles_per_jiffy = MCF_BUSCLK / HZ;
+ /*
+ * The coldfire slice timer (SLT) runs from STCNT to 0 included,
+ * then STCNT again and so on. It counts thus actually
+ * STCNT + 1 steps for 1 tick, not STCNT. So if you want
+ * n cycles, initialize STCNT with n - 1.
+ */
+ __raw_writel(mcfslt_cycles_per_jiffy - 1, TA(MCFSLT_STCNT));
+ __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN,
+ TA(MCFSLT_SCR));
+ /* initialize mcfslt_cnt knowing that slice timers count down */
+ mcfslt_cnt = mcfslt_cycles_per_jiffy;
+
+ setup_irq(MCF_IRQ_TIMER, &mcfslt_timer_irq);
+
+ mcfslt_clk.mult = clocksource_hz2mult(MCF_BUSCLK, mcfslt_clk.shift);
+ clocksource_register(&mcfslt_clk);
+
+#ifdef CONFIG_HIGHPROFILE
+ mcfslt_profile_init();
+#endif
+}