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-rw-r--r--arch/microblaze/kernel/Makefile2
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo.c2
-rw-r--r--arch/microblaze/kernel/intc.c85
-rw-r--r--arch/microblaze/kernel/irq.c10
-rw-r--r--arch/microblaze/kernel/reset.c6
-rw-r--r--arch/microblaze/kernel/selfmod.c81
-rw-r--r--arch/microblaze/kernel/setup.c10
-rw-r--r--arch/microblaze/kernel/timer.c186
8 files changed, 133 insertions, 249 deletions
diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile
index 928c950..5b0e512 100644
--- a/arch/microblaze/kernel/Makefile
+++ b/arch/microblaze/kernel/Makefile
@@ -7,7 +7,6 @@ ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_timer.o = -pg
CFLAGS_REMOVE_intc.o = -pg
CFLAGS_REMOVE_early_printk.o = -pg
-CFLAGS_REMOVE_selfmod.o = -pg
CFLAGS_REMOVE_heartbeat.o = -pg
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_process.o = -pg
@@ -23,7 +22,6 @@ obj-y += dma.o exceptions.o \
obj-y += cpu/
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-obj-$(CONFIG_SELFMOD) += selfmod.o
obj-$(CONFIG_HEART_BEAT) += heartbeat.o
obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o
obj-$(CONFIG_MMU) += misc.o
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
index 410398f..c9203b1 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -39,6 +39,8 @@ const struct cpu_ver_key cpu_ver_lookup[] = {
{"8.30.a", 0x17},
{"8.40.a", 0x18},
{"8.40.b", 0x19},
+ {"9.0", 0x1b},
+ {"9.1", 0x1d},
{NULL, 0},
};
diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
index d85fa3a..581451a 100644
--- a/arch/microblaze/kernel/intc.c
+++ b/arch/microblaze/kernel/intc.c
@@ -1,5 +1,6 @@
/*
- * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2013 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2012-2013 Xilinx, Inc.
* Copyright (C) 2007-2009 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
@@ -8,23 +9,15 @@
* for more details.
*/
-#include <linux/init.h>
#include <linux/irqdomain.h>
#include <linux/irq.h>
-#include <asm/page.h>
+#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/bug.h>
-#include <asm/prom.h>
-#include <asm/irq.h>
+#include "../../drivers/irqchip/irqchip.h"
-#ifdef CONFIG_SELFMOD_INTC
-#include <asm/selfmod.h>
-#define INTC_BASE BARRIER_BASE_ADDR
-#else
-static unsigned int intc_baseaddr;
-#define INTC_BASE intc_baseaddr
-#endif
+static void __iomem *intc_baseaddr;
/* No one else should require these constants, so define them locally here. */
#define ISR 0x00 /* Interrupt Status Register */
@@ -50,21 +43,21 @@ static void intc_enable_or_unmask(struct irq_data *d)
* acks the irq before calling the interrupt handler
*/
if (irqd_is_level_type(d))
- out_be32(INTC_BASE + IAR, mask);
+ out_be32(intc_baseaddr + IAR, mask);
- out_be32(INTC_BASE + SIE, mask);
+ out_be32(intc_baseaddr + SIE, mask);
}
static void intc_disable_or_mask(struct irq_data *d)
{
pr_debug("disable: %ld\n", d->hwirq);
- out_be32(INTC_BASE + CIE, 1 << d->hwirq);
+ out_be32(intc_baseaddr + CIE, 1 << d->hwirq);
}
static void intc_ack(struct irq_data *d)
{
pr_debug("ack: %ld\n", d->hwirq);
- out_be32(INTC_BASE + IAR, 1 << d->hwirq);
+ out_be32(intc_baseaddr + IAR, 1 << d->hwirq);
}
static void intc_mask_ack(struct irq_data *d)
@@ -72,8 +65,8 @@ static void intc_mask_ack(struct irq_data *d)
unsigned long mask = 1 << d->hwirq;
pr_debug("disable_and_ack: %ld\n", d->hwirq);
- out_be32(INTC_BASE + CIE, mask);
- out_be32(INTC_BASE + IAR, mask);
+ out_be32(intc_baseaddr + CIE, mask);
+ out_be32(intc_baseaddr + IAR, mask);
}
static struct irq_chip intc_dev = {
@@ -90,7 +83,7 @@ unsigned int get_irq(void)
{
unsigned int hwirq, irq = -1;
- hwirq = in_be32(INTC_BASE + IVR);
+ hwirq = in_be32(intc_baseaddr + IVR);
if (hwirq != -1U)
irq = irq_find_mapping(root_domain, hwirq);
@@ -120,40 +113,32 @@ static const struct irq_domain_ops xintc_irq_domain_ops = {
.map = xintc_map,
};
-void __init init_IRQ(void)
+static int __init xilinx_intc_of_init(struct device_node *intc,
+ struct device_node *parent)
{
u32 nr_irq, intr_mask;
- struct device_node *intc = NULL;
-#ifdef CONFIG_SELFMOD_INTC
- unsigned int intc_baseaddr = 0;
- static int arr_func[] = {
- (int)&get_irq,
- (int)&intc_enable_or_unmask,
- (int)&intc_disable_or_mask,
- (int)&intc_mask_ack,
- (int)&intc_ack,
- (int)&intc_end,
- 0
- };
-#endif
- intc = of_find_compatible_node(NULL, NULL, "xlnx,xps-intc-1.00.a");
- BUG_ON(!intc);
-
- intc_baseaddr = be32_to_cpup(of_get_property(intc, "reg", NULL));
- intc_baseaddr = (unsigned long) ioremap(intc_baseaddr, PAGE_SIZE);
- nr_irq = be32_to_cpup(of_get_property(intc,
- "xlnx,num-intr-inputs", NULL));
-
- intr_mask =
- be32_to_cpup(of_get_property(intc, "xlnx,kind-of-intr", NULL));
+ int ret;
+
+ intc_baseaddr = of_iomap(intc, 0);
+ BUG_ON(!intc_baseaddr);
+
+ ret = of_property_read_u32(intc, "xlnx,num-intr-inputs", &nr_irq);
+ if (ret < 0) {
+ pr_err("%s: unable to read xlnx,num-intr-inputs\n", __func__);
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32(intc, "xlnx,kind-of-intr", &intr_mask);
+ if (ret < 0) {
+ pr_err("%s: unable to read xlnx,kind-of-intr\n", __func__);
+ return -EINVAL;
+ }
+
if (intr_mask > (u32)((1ULL << nr_irq) - 1))
pr_info(" ERROR: Mismatch in kind-of-intr param\n");
-#ifdef CONFIG_SELFMOD_INTC
- selfmod_function((int *) arr_func, intc_baseaddr);
-#endif
- pr_info("%s #0 at 0x%08x, num_irq=%d, edge=0x%x\n",
- intc->name, intc_baseaddr, nr_irq, intr_mask);
+ pr_info("%s: num_irq=%d, edge=0x%x\n",
+ intc->full_name, nr_irq, intr_mask);
/*
* Disable all external interrupts until they are
@@ -174,4 +159,8 @@ void __init init_IRQ(void)
(void *)intr_mask);
irq_set_default_host(root_domain);
+
+ return 0;
}
+
+IRQCHIP_DECLARE(xilinx_intc, "xlnx,xps-intc-1.00.a", xilinx_intc_of_init);
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index ace700a..11e24de 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -17,10 +17,8 @@
#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
#include <linux/irq.h>
+#include <linux/irqchip.h>
#include <linux/of_irq.h>
-#include <linux/export.h>
-
-#include <asm/prom.h>
static u32 concurrent_irq;
@@ -47,3 +45,9 @@ next_irq:
set_irq_regs(old_regs);
trace_hardirqs_on();
}
+
+void __init init_IRQ(void)
+{
+ /* process the entire interrupt tree in one go */
+ irqchip_init();
+}
diff --git a/arch/microblaze/kernel/reset.c b/arch/microblaze/kernel/reset.c
index 2e5079a..fbe58c6 100644
--- a/arch/microblaze/kernel/reset.c
+++ b/arch/microblaze/kernel/reset.c
@@ -67,7 +67,11 @@ static void gpio_system_reset(void)
pr_notice("Reset GPIO unavailable - halting!\n");
}
#else
-#define gpio_system_reset() do {} while (0)
+static void gpio_system_reset(void)
+{
+ pr_notice("No reset GPIO present - halting!\n");
+}
+
void of_platform_reset_gpio_probe(void)
{
return;
diff --git a/arch/microblaze/kernel/selfmod.c b/arch/microblaze/kernel/selfmod.c
deleted file mode 100644
index 89508bd..0000000
--- a/arch/microblaze/kernel/selfmod.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
- * Copyright (C) 2009 PetaLogix
- *
- * 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/interrupt.h>
-#include <asm/selfmod.h>
-
-#undef DEBUG
-
-#if __GNUC__ > 3
-#error GCC 4 unsupported SELFMOD. Please disable SELFMOD from menuconfig.
-#endif
-
-#define OPCODE_IMM 0xB0000000
-#define OPCODE_LWI 0xE8000000
-#define OPCODE_LWI_MASK 0xEC000000
-#define OPCODE_RTSD 0xB60F0008 /* return from func: rtsd r15, 8 */
-#define OPCODE_ADDIK 0x30000000
-#define OPCODE_ADDIK_MASK 0xFC000000
-
-#define IMM_BASE (OPCODE_IMM | (BARRIER_BASE_ADDR >> 16))
-#define LWI_BASE (OPCODE_LWI | (BARRIER_BASE_ADDR & 0x0000ff00))
-#define LWI_BASE_MASK (OPCODE_LWI_MASK | (BARRIER_BASE_ADDR & 0x0000ff00))
-#define ADDIK_BASE (OPCODE_ADDIK | (BARRIER_BASE_ADDR & 0x0000ff00))
-#define ADDIK_BASE_MASK (OPCODE_ADDIK_MASK | (BARRIER_BASE_ADDR & 0x0000ff00))
-
-#define MODIFY_INSTR { \
- pr_debug("%s: curr instr, (%d):0x%x, next(%d):0x%x\n", \
- __func__, i, addr[i], i + 1, addr[i + 1]); \
- addr[i] = OPCODE_IMM + (base >> 16); \
- /* keep instruction opcode and add only last 16bits */ \
- addr[i + 1] = (addr[i + 1] & 0xffff00ff) + (base & 0xffff); \
- __invalidate_icache(addr[i]); \
- __invalidate_icache(addr[i + 1]); \
- pr_debug("%s: hack instr, (%d):0x%x, next(%d):0x%x\n", \
- __func__, i, addr[i], i + 1, addr[i + 1]); }
-
-/* NOTE
- * self-modified part of code for improvement of interrupt controller
- * save instruction in interrupt rutine
- */
-void selfmod_function(const int *arr_fce, const unsigned int base)
-{
- unsigned int flags, i, j, *addr = NULL;
-
- local_irq_save(flags);
- __disable_icache();
-
- /* zero terminated array */
- for (j = 0; arr_fce[j] != 0; j++) {
- /* get start address of function */
- addr = (unsigned int *) arr_fce[j];
- pr_debug("%s: func(%d) at 0x%x\n",
- __func__, j, (unsigned int) addr);
- for (i = 0; ; i++) {
- pr_debug("%s: instruction code at %d: 0x%x\n",
- __func__, i, addr[i]);
- if (addr[i] == IMM_BASE) {
- /* detecting of lwi (0xE8) or swi (0xF8) instr
- * I can detect both opcode with one mask */
- if ((addr[i + 1] & LWI_BASE_MASK) == LWI_BASE) {
- MODIFY_INSTR;
- } else /* detection addik for ack */
- if ((addr[i + 1] & ADDIK_BASE_MASK) ==
- ADDIK_BASE) {
- MODIFY_INSTR;
- }
- } else if (addr[i] == OPCODE_RTSD) {
- /* return from function means end of function */
- pr_debug("%s: end of array %d\n", __func__, i);
- break;
- }
- }
- }
- local_irq_restore(flags);
-} /* end of self-modified code */
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 0263da7..0775e03 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -9,6 +9,7 @@
*/
#include <linux/init.h>
+#include <linux/clocksource.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/cpu.h>
@@ -68,10 +69,6 @@ void __init setup_arch(char **cmdline_p)
xilinx_pci_init();
-#if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER)
- pr_notice("Self modified code enable\n");
-#endif
-
#ifdef CONFIG_VT
#if defined(CONFIG_XILINX_CONSOLE)
conswitchp = &xil_con;
@@ -196,6 +193,11 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
per_cpu(CURRENT_SAVE, 0) = (unsigned long)current;
}
+void __init time_init(void)
+{
+ clocksource_of_init();
+}
+
#ifdef CONFIG_DEBUG_FS
struct dentry *of_debugfs_root;
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index aec5020..e4b3f33 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -1,5 +1,6 @@
/*
- * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2013 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2012-2013 Xilinx, Inc.
* Copyright (C) 2007-2009 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
@@ -8,34 +9,16 @@
* for more details.
*/
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
#include <linux/interrupt.h>
-#include <linux/profile.h>
-#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/err.h>
#include <linux/clk.h>
-#include <linux/clocksource.h>
#include <linux/clockchips.h>
-#include <linux/io.h>
-#include <linux/bug.h>
+#include <linux/of_address.h>
#include <asm/cpuinfo.h>
-#include <asm/setup.h>
-#include <asm/prom.h>
-#include <asm/irq.h>
#include <linux/cnt32_to_63.h>
-#ifdef CONFIG_SELFMOD_TIMER
-#include <asm/selfmod.h>
-#define TIMER_BASE BARRIER_BASE_ADDR
-#else
-static unsigned int timer_baseaddr;
-#define TIMER_BASE timer_baseaddr
-#endif
+static void __iomem *timer_baseaddr;
static unsigned int freq_div_hz;
static unsigned int timer_clock_freq;
@@ -59,19 +42,21 @@ static unsigned int timer_clock_freq;
#define TCSR_PWMA (1<<9)
#define TCSR_ENALL (1<<10)
-static inline void microblaze_timer0_stop(void)
+static inline void xilinx_timer0_stop(void)
{
- out_be32(TIMER_BASE + TCSR0, in_be32(TIMER_BASE + TCSR0) & ~TCSR_ENT);
+ out_be32(timer_baseaddr + TCSR0,
+ in_be32(timer_baseaddr + TCSR0) & ~TCSR_ENT);
}
-static inline void microblaze_timer0_start_periodic(unsigned long load_val)
+static inline void xilinx_timer0_start_periodic(unsigned long load_val)
{
if (!load_val)
load_val = 1;
- out_be32(TIMER_BASE + TLR0, load_val); /* loading value to timer reg */
+ /* loading value to timer reg */
+ out_be32(timer_baseaddr + TLR0, load_val);
/* load the initial value */
- out_be32(TIMER_BASE + TCSR0, TCSR_LOAD);
+ out_be32(timer_baseaddr + TCSR0, TCSR_LOAD);
/* see timer data sheet for detail
* !ENALL - don't enable 'em all
@@ -86,38 +71,39 @@ static inline void microblaze_timer0_start_periodic(unsigned long load_val)
* UDT - set the timer as down counter
* !MDT0 - generate mode
*/
- out_be32(TIMER_BASE + TCSR0,
+ out_be32(timer_baseaddr + TCSR0,
TCSR_TINT|TCSR_ENIT|TCSR_ENT|TCSR_ARHT|TCSR_UDT);
}
-static inline void microblaze_timer0_start_oneshot(unsigned long load_val)
+static inline void xilinx_timer0_start_oneshot(unsigned long load_val)
{
if (!load_val)
load_val = 1;
- out_be32(TIMER_BASE + TLR0, load_val); /* loading value to timer reg */
+ /* loading value to timer reg */
+ out_be32(timer_baseaddr + TLR0, load_val);
/* load the initial value */
- out_be32(TIMER_BASE + TCSR0, TCSR_LOAD);
+ out_be32(timer_baseaddr + TCSR0, TCSR_LOAD);
- out_be32(TIMER_BASE + TCSR0,
+ out_be32(timer_baseaddr + TCSR0,
TCSR_TINT|TCSR_ENIT|TCSR_ENT|TCSR_ARHT|TCSR_UDT);
}
-static int microblaze_timer_set_next_event(unsigned long delta,
+static int xilinx_timer_set_next_event(unsigned long delta,
struct clock_event_device *dev)
{
pr_debug("%s: next event, delta %x\n", __func__, (u32)delta);
- microblaze_timer0_start_oneshot(delta);
+ xilinx_timer0_start_oneshot(delta);
return 0;
}
-static void microblaze_timer_set_mode(enum clock_event_mode mode,
+static void xilinx_timer_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
pr_info("%s: periodic\n", __func__);
- microblaze_timer0_start_periodic(freq_div_hz);
+ xilinx_timer0_start_periodic(freq_div_hz);
break;
case CLOCK_EVT_MODE_ONESHOT:
pr_info("%s: oneshot\n", __func__);
@@ -127,7 +113,7 @@ static void microblaze_timer_set_mode(enum clock_event_mode mode,
break;
case CLOCK_EVT_MODE_SHUTDOWN:
pr_info("%s: shutdown\n", __func__);
- microblaze_timer0_stop();
+ xilinx_timer0_stop();
break;
case CLOCK_EVT_MODE_RESUME:
pr_info("%s: resume\n", __func__);
@@ -135,23 +121,23 @@ static void microblaze_timer_set_mode(enum clock_event_mode mode,
}
}
-static struct clock_event_device clockevent_microblaze_timer = {
- .name = "microblaze_clockevent",
+static struct clock_event_device clockevent_xilinx_timer = {
+ .name = "xilinx_clockevent",
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
.shift = 8,
.rating = 300,
- .set_next_event = microblaze_timer_set_next_event,
- .set_mode = microblaze_timer_set_mode,
+ .set_next_event = xilinx_timer_set_next_event,
+ .set_mode = xilinx_timer_set_mode,
};
static inline void timer_ack(void)
{
- out_be32(TIMER_BASE + TCSR0, in_be32(TIMER_BASE + TCSR0));
+ out_be32(timer_baseaddr + TCSR0, in_be32(timer_baseaddr + TCSR0));
}
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
- struct clock_event_device *evt = &clockevent_microblaze_timer;
+ struct clock_event_device *evt = &clockevent_xilinx_timer;
#ifdef CONFIG_HEART_BEAT
heartbeat();
#endif
@@ -164,73 +150,74 @@ static struct irqaction timer_irqaction = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_TIMER,
.name = "timer",
- .dev_id = &clockevent_microblaze_timer,
+ .dev_id = &clockevent_xilinx_timer,
};
-static __init void microblaze_clockevent_init(void)
+static __init void xilinx_clockevent_init(void)
{
- clockevent_microblaze_timer.mult =
+ clockevent_xilinx_timer.mult =
div_sc(timer_clock_freq, NSEC_PER_SEC,
- clockevent_microblaze_timer.shift);
- clockevent_microblaze_timer.max_delta_ns =
- clockevent_delta2ns((u32)~0, &clockevent_microblaze_timer);
- clockevent_microblaze_timer.min_delta_ns =
- clockevent_delta2ns(1, &clockevent_microblaze_timer);
- clockevent_microblaze_timer.cpumask = cpumask_of(0);
- clockevents_register_device(&clockevent_microblaze_timer);
+ clockevent_xilinx_timer.shift);
+ clockevent_xilinx_timer.max_delta_ns =
+ clockevent_delta2ns((u32)~0, &clockevent_xilinx_timer);
+ clockevent_xilinx_timer.min_delta_ns =
+ clockevent_delta2ns(1, &clockevent_xilinx_timer);
+ clockevent_xilinx_timer.cpumask = cpumask_of(0);
+ clockevents_register_device(&clockevent_xilinx_timer);
}
-static cycle_t microblaze_read(struct clocksource *cs)
+static cycle_t xilinx_read(struct clocksource *cs)
{
/* reading actual value of timer 1 */
- return (cycle_t) (in_be32(TIMER_BASE + TCR1));
+ return (cycle_t) (in_be32(timer_baseaddr + TCR1));
}
-static struct timecounter microblaze_tc = {
+static struct timecounter xilinx_tc = {
.cc = NULL,
};
-static cycle_t microblaze_cc_read(const struct cyclecounter *cc)
+static cycle_t xilinx_cc_read(const struct cyclecounter *cc)
{
- return microblaze_read(NULL);
+ return xilinx_read(NULL);
}
-static struct cyclecounter microblaze_cc = {
- .read = microblaze_cc_read,
+static struct cyclecounter xilinx_cc = {
+ .read = xilinx_cc_read,
.mask = CLOCKSOURCE_MASK(32),
.shift = 8,
};
-static int __init init_microblaze_timecounter(void)
+static int __init init_xilinx_timecounter(void)
{
- microblaze_cc.mult = div_sc(timer_clock_freq, NSEC_PER_SEC,
- microblaze_cc.shift);
+ xilinx_cc.mult = div_sc(timer_clock_freq, NSEC_PER_SEC,
+ xilinx_cc.shift);
- timecounter_init(&microblaze_tc, &microblaze_cc, sched_clock());
+ timecounter_init(&xilinx_tc, &xilinx_cc, sched_clock());
return 0;
}
static struct clocksource clocksource_microblaze = {
- .name = "microblaze_clocksource",
+ .name = "xilinx_clocksource",
.rating = 300,
- .read = microblaze_read,
+ .read = xilinx_read,
.mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
-static int __init microblaze_clocksource_init(void)
+static int __init xilinx_clocksource_init(void)
{
if (clocksource_register_hz(&clocksource_microblaze, timer_clock_freq))
panic("failed to register clocksource");
/* stop timer1 */
- out_be32(TIMER_BASE + TCSR1, in_be32(TIMER_BASE + TCSR1) & ~TCSR_ENT);
+ out_be32(timer_baseaddr + TCSR1,
+ in_be32(timer_baseaddr + TCSR1) & ~TCSR_ENT);
/* start timer1 - up counting without interrupt */
- out_be32(TIMER_BASE + TCSR1, TCSR_TINT|TCSR_ENT|TCSR_ARHT);
+ out_be32(timer_baseaddr + TCSR1, TCSR_TINT|TCSR_ENT|TCSR_ARHT);
/* register timecounter - for ftrace support */
- init_microblaze_timecounter();
+ init_xilinx_timecounter();
return 0;
}
@@ -240,55 +227,31 @@ static int __init microblaze_clocksource_init(void)
*/
static int timer_initialized;
-void __init time_init(void)
+static void __init xilinx_timer_init(struct device_node *timer)
{
u32 irq;
u32 timer_num = 1;
- struct device_node *timer = NULL;
- const void *prop;
-#ifdef CONFIG_SELFMOD_TIMER
- unsigned int timer_baseaddr = 0;
- int arr_func[] = {
- (int)&microblaze_read,
- (int)&timer_interrupt,
- (int)&microblaze_clocksource_init,
- (int)&microblaze_timer_set_mode,
- (int)&microblaze_timer_set_next_event,
- 0
- };
-#endif
- prop = of_get_property(of_chosen, "system-timer", NULL);
- if (prop)
- timer = of_find_node_by_phandle(be32_to_cpup(prop));
- else
- pr_info("No chosen timer found, using default\n");
-
- if (!timer)
- timer = of_find_compatible_node(NULL, NULL,
- "xlnx,xps-timer-1.00.a");
- BUG_ON(!timer);
-
- timer_baseaddr = be32_to_cpup(of_get_property(timer, "reg", NULL));
- timer_baseaddr = (unsigned long) ioremap(timer_baseaddr, PAGE_SIZE);
+ int ret;
+
+ timer_baseaddr = of_iomap(timer, 0);
+ if (!timer_baseaddr) {
+ pr_err("ERROR: invalid timer base address\n");
+ BUG();
+ }
+
irq = irq_of_parse_and_map(timer, 0);
- timer_num = be32_to_cpup(of_get_property(timer,
- "xlnx,one-timer-only", NULL));
+
+ of_property_read_u32(timer, "xlnx,one-timer-only", &timer_num);
if (timer_num) {
- pr_emerg("Please enable two timers in HW\n");
+ pr_emerg("Please enable two timers in HW\n");
BUG();
}
-#ifdef CONFIG_SELFMOD_TIMER
- selfmod_function((int *) arr_func, timer_baseaddr);
-#endif
- pr_info("%s #0 at 0x%08x, irq=%d\n",
- timer->name, timer_baseaddr, irq);
+ pr_info("%s: irq=%d\n", timer->full_name, irq);
/* If there is clock-frequency property than use it */
- prop = of_get_property(timer, "clock-frequency", NULL);
- if (prop)
- timer_clock_freq = be32_to_cpup(prop);
- else
+ ret = of_property_read_u32(timer, "clock-frequency", &timer_clock_freq);
+ if (ret < 0)
timer_clock_freq = cpuinfo.cpu_clock_freq;
freq_div_hz = timer_clock_freq / HZ;
@@ -297,8 +260,8 @@ void __init time_init(void)
#ifdef CONFIG_HEART_BEAT
setup_heartbeat();
#endif
- microblaze_clocksource_init();
- microblaze_clockevent_init();
+ xilinx_clocksource_init();
+ xilinx_clockevent_init();
timer_initialized = 1;
}
@@ -312,3 +275,6 @@ unsigned long long notrace sched_clock(void)
}
return 0;
}
+
+CLOCKSOURCE_OF_DECLARE(xilinx_timer, "xlnx,xps-timer-1.00.a",
+ xilinx_timer_init);
generated by cgit v0.10.2 at 2024-07-12 13:35:30 (GMT)