aboutsummaryrefslogtreecommitdiff
path: root/arch/h8300/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/h8300/kernel')
-rw-r--r--arch/h8300/kernel/Makefile2
-rw-r--r--arch/h8300/kernel/module.c3
-rw-r--r--arch/h8300/kernel/process.c1
-rw-r--r--arch/h8300/kernel/time.c29
-rw-r--r--arch/h8300/kernel/timer/Makefile6
-rw-r--r--arch/h8300/kernel/timer/itu.c83
-rw-r--r--arch/h8300/kernel/timer/timer16.c78
-rw-r--r--arch/h8300/kernel/timer/timer8.c103
-rw-r--r--arch/h8300/kernel/timer/tpu.c102
-rw-r--r--arch/h8300/kernel/traps.c17
10 files changed, 398 insertions, 26 deletions
diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile
index 6c248c3c5c3..8d4d2a54be9 100644
--- a/arch/h8300/kernel/Makefile
+++ b/arch/h8300/kernel/Makefile
@@ -7,6 +7,6 @@ extra-y := vmlinux.lds
obj-y := process.o traps.o ptrace.o irq.o \
sys_h8300.o time.o signal.o \
setup.o gpio.o init_task.o syscalls.o \
- entry.o
+ entry.o timer/
obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o
diff --git a/arch/h8300/kernel/module.c b/arch/h8300/kernel/module.c
index 4fd7138a6e0..cfc9127d2ce 100644
--- a/arch/h8300/kernel/module.c
+++ b/arch/h8300/kernel/module.c
@@ -114,9 +114,10 @@ int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
- return 0;
+ return module_bug_finalize(hdr, sechdrs, me);
}
void module_arch_cleanup(struct module *mod)
{
+ module_bug_cleanup(mod);
}
diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c
index dfbe7ab9ffe..a8ef654a5a0 100644
--- a/arch/h8300/kernel/process.c
+++ b/arch/h8300/kernel/process.c
@@ -34,7 +34,6 @@
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/fs.h>
diff --git a/arch/h8300/kernel/time.c b/arch/h8300/kernel/time.c
index e37c835e67c..7f2d6cfbb4b 100644
--- a/arch/h8300/kernel/time.c
+++ b/arch/h8300/kernel/time.c
@@ -27,27 +27,21 @@
#include <linux/profile.h>
#include <asm/io.h>
-#include <asm/target_time.h>
+#include <asm/timer.h>
#define TICK_SIZE (tick_nsec / 1000)
-/*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "do_timer()" routine every clocktick
- */
-static void timer_interrupt(int irq, void *dummy, struct pt_regs * regs)
+void h8300_timer_tick(void)
{
- /* may need to kick the hardware timer */
- platform_timer_eoi();
-
+ if (current->pid)
+ profile_tick(CPU_PROFILING);
+ write_seqlock(&xtime_lock);
do_timer(1);
-#ifndef CONFIG_SMP
- update_process_times(user_mode(regs));
-#endif
- profile_tick(CPU_PROFILING);
+ write_sequnlock(&xtime_lock);
+ update_process_times(user_mode(get_irq_regs()));
}
-void time_init(void)
+void __init time_init(void)
{
unsigned int year, mon, day, hour, min, sec;
@@ -57,12 +51,13 @@ void time_init(void)
year = 1980;
mon = day = 1;
hour = min = sec = 0;
- platform_gettod (&year, &mon, &day, &hour, &min, &sec);
-
+#ifdef CONFIG_H8300_GETTOD
+ h8300_gettod (&year, &mon, &day, &hour, &min, &sec);
+#endif
if ((year += 1900) < 1970)
year += 100;
xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
xtime.tv_nsec = 0;
- platform_timer_setup(timer_interrupt);
+ h8300_timer_setup();
}
diff --git a/arch/h8300/kernel/timer/Makefile b/arch/h8300/kernel/timer/Makefile
new file mode 100644
index 00000000000..bef0510ea6a
--- /dev/null
+++ b/arch/h8300/kernel/timer/Makefile
@@ -0,0 +1,6 @@
+# h8300 internal timer handler
+
+obj-$(CONFIG_H8300_TIMER8) := timer8.o
+obj-$(CONFIG_H8300_TIMER16) := timer16.o
+obj-$(CONFIG_H8300_ITU) := itu.o
+obj-$(CONFIG_H8300_TPU) := tpu.o
diff --git a/arch/h8300/kernel/timer/itu.c b/arch/h8300/kernel/timer/itu.c
new file mode 100644
index 00000000000..d1c926596b0
--- /dev/null
+++ b/arch/h8300/kernel/timer/itu.c
@@ -0,0 +1,83 @@
+/*
+ * linux/arch/h8300/kernel/timer/itu.c
+ *
+ * Yoshinori Sato <ysato@users.sourcefoge.jp>
+ *
+ * ITU Timer Handler
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/timex.h>
+
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/regs306x.h>
+
+#if CONFIG_H8300_ITU_CH == 0
+#define ITUBASE 0xffff64
+#define ITUIRQ 24
+#elif CONFIG_H8300_ITU_CH == 1
+#define ITUBASE 0xffff6e
+#define ITUIRQ 28
+#elif CONFIG_H8300_ITU_CH == 2
+#define ITUBASE 0xffff78
+#define ITUIRQ 32
+#elif CONFIG_H8300_ITU_CH == 3
+#define ITUBASE 0xffff82
+#define ITUIRQ 36
+#elif CONFIG_H8300_ITU_CH == 4
+#define ITUBASE 0xffff92
+#define ITUIRQ 40
+#else
+#error Unknown timer channel.
+#endif
+
+#define TCR 0
+#define TIOR 1
+#define TIER 2
+#define TSR 3
+#define TCNT 4
+#define GRA 6
+#define GRB 8
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ h8300_timer_tick();
+ ctrl_bclr(IMFA, ITUBASE + TSR);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction itu_irq = {
+ .name = "itu",
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .mask = CPU_MASK_NONE,
+};
+
+static const int __initdata divide_rate[] = {1, 2, 4, 8};
+
+void __init h8300_timer_setup(void)
+{
+ unsigned int div;
+ unsigned int cnt;
+
+ calc_param(cnt, div, divide_rate, 0x10000);
+
+ setup_irq(ITUIRQ, &itu_irq);
+
+ /* initalize timer */
+ ctrl_outb(0, TSTR);
+ ctrl_outb(CCLR0 | div, ITUBASE + TCR);
+ ctrl_outb(0x01, ITUBASE + TIER);
+ ctrl_outw(cnt, ITUBASE + GRA);
+ ctrl_bset(CONFIG_H8300_ITU_CH, TSTR);
+}
diff --git a/arch/h8300/kernel/timer/timer16.c b/arch/h8300/kernel/timer/timer16.c
new file mode 100644
index 00000000000..e14271b7211
--- /dev/null
+++ b/arch/h8300/kernel/timer/timer16.c
@@ -0,0 +1,78 @@
+/*
+ * linux/arch/h8300/kernel/timer/timer16.c
+ *
+ * Yoshinori Sato <ysato@users.sourcefoge.jp>
+ *
+ * 16bit Timer Handler
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/timex.h>
+
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/regs306x.h>
+
+/* 16bit timer */
+#if CONFIG_H8300_TIMER16_CH == 0
+#define _16BASE 0xffff78
+#define _16IRQ 24
+#elif CONFIG_H8300_TIMER16_CH == 1
+#define _16BASE 0xffff80
+#define _16IRQ 28
+#elif CONFIG_H8300_TIMER16_CH == 2
+#define _16BASE 0xffff88
+#define _16IRQ 32
+#else
+#error Unknown timer channel.
+#endif
+
+#define TCR 0
+#define TIOR 1
+#define TCNT 2
+#define GRA 4
+#define GRB 6
+
+#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*10000 /* Timer input freq. */
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ h8300_timer_tick();
+ ctrl_bclr(CONFIG_H8300_TIMER16_CH, TISRA);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction timer16_irq = {
+ .name = "timer-16",
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .mask = CPU_MASK_NONE,
+};
+
+static const int __initdata divide_rate[] = {1, 2, 4, 8};
+
+void __init h8300_timer_setup(void)
+{
+ unsigned int div;
+ unsigned int cnt;
+
+ calc_param(cnt, div, divide_rate, 0x10000);
+
+ setup_irq(_16IRQ, &timer16_irq);
+
+ /* initalize timer */
+ ctrl_outb(0, TSTR);
+ ctrl_outb(CCLR0 | div, _16BASE + TCR);
+ ctrl_outw(cnt, _16BASE + GRA);
+ ctrl_bset(4 + CONFIG_H8300_TIMER16_CH, TISRA);
+ ctrl_bset(CONFIG_H8300_TIMER16_CH, TSTR);
+}
diff --git a/arch/h8300/kernel/timer/timer8.c b/arch/h8300/kernel/timer/timer8.c
new file mode 100644
index 00000000000..0556d7c7bea
--- /dev/null
+++ b/arch/h8300/kernel/timer/timer8.c
@@ -0,0 +1,103 @@
+/*
+ * linux/arch/h8300/kernel/cpu/timer/timer8.c
+ *
+ * Yoshinori Sato <ysato@users.sourcefoge.jp>
+ *
+ * 8bit Timer Handler
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/profile.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/timer.h>
+#if defined(CONFIG_CPU_H8300H)
+#include <asm/regs306x.h>
+#endif
+#if defined(CONFIG_CPU_H8S)
+#include <asm/regs267x.h>
+#endif
+
+/* 8bit timer x2 */
+#define CMFA 6
+
+#if defined(CONFIG_H8300_TIMER8_CH0)
+#define _8BASE _8TCR0
+#ifdef CONFIG_CPU_H8300H
+#define _8IRQ 36
+#endif
+#ifdef CONFIG_CPU_H8S
+#define _8IRQ 72
+#endif
+#elif defined(CONFIG_H8300_TIMER8_CH2)
+#ifdef CONFIG_CPU_H8300H
+#define _8BASE _8TCR2
+#define _8IRQ 40
+#endif
+#endif
+
+#ifndef _8BASE
+#error Unknown timer channel.
+#endif
+
+#define _8TCR 0
+#define _8TCSR 2
+#define TCORA 4
+#define TCORB 6
+#define _8TCNT 8
+
+#define CMIEA 0x40
+#define CCLR_CMA 0x08
+#define CKS2 0x04
+
+/*
+ * timer_interrupt() needs to keep up the real-time clock,
+ * as well as call the "do_timer()" routine every clocktick
+ */
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ h8300_timer_tick();
+ ctrl_bclr(CMFA, _8BASE + _8TCSR);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction timer8_irq = {
+ .name = "timer-8",
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .mask = CPU_MASK_NONE,
+};
+
+static const int __initdata divide_rate[] = {8, 64, 8192};
+
+void __init h8300_timer_setup(void)
+{
+ unsigned int div;
+ unsigned int cnt;
+
+ calc_param(cnt, div, divide_rate, 0x10000);
+ div++;
+
+ setup_irq(_8IRQ, &timer8_irq);
+
+#if defined(CONFIG_CPU_H8S)
+ /* Timer module enable */
+ ctrl_bclr(0, MSTPCRL)
+#endif
+
+ /* initalize timer */
+ ctrl_outw(cnt, _8BASE + TCORA);
+ ctrl_outw(0x0000, _8BASE + _8TCSR);
+ ctrl_outw((CMIEA|CCLR_CMA|CKS2) << 8 | div,
+ _8BASE + _8TCR);
+}
diff --git a/arch/h8300/kernel/timer/tpu.c b/arch/h8300/kernel/timer/tpu.c
new file mode 100644
index 00000000000..df7f453a967
--- /dev/null
+++ b/arch/h8300/kernel/timer/tpu.c
@@ -0,0 +1,102 @@
+/*
+ * linux/arch/h8300/kernel/timer/tpu.c
+ *
+ * Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * TPU Timer Handler
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/timex.h>
+
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/regs267x.h>
+
+/* TPU */
+#if CONFIG_H8300_TPU_CH == 0
+#define TPUBASE 0xffffd0
+#define TPUIRQ 40
+#elif CONFIG_H8300_TPU_CH == 1
+#define TPUBASE 0xffffe0
+#define TPUIRQ 48
+#elif CONFIG_H8300_TPU_CH == 2
+#define TPUBASE 0xfffff0
+#define TPUIRQ 52
+#elif CONFIG_H8300_TPU_CH == 3
+#define TPUBASE 0xfffe80
+#define TPUIRQ 56
+#elif CONFIG_H8300_TPU_CH == 4
+#define TPUBASE 0xfffe90
+#define TPUIRQ 64
+#else
+#error Unknown timer channel.
+#endif
+
+#define _TCR 0
+#define _TMDR 1
+#define _TIOR 2
+#define _TIER 4
+#define _TSR 5
+#define _TCNT 6
+#define _GRA 8
+#define _GRB 10
+
+#define CCLR0 0x20
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ h8300_timer_tick();
+ ctrl_bclr(0, TPUBASE + _TSR);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction tpu_irq = {
+ .name = "tpu",
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .mask = CPU_MASK_NONE,
+};
+
+const static int __initdata divide_rate[] = {
+#if CONFIG_H8300_TPU_CH == 0
+ 1,4,16,64,0,0,0,0,
+#elif (CONFIG_H8300_TPU_CH == 1) || (CONFIG_H8300_TPU_CH == 5)
+ 1,4,16,64,0,0,256,0,
+#elif (CONFIG_H8300_TPU_CH == 2) || (CONFIG_H8300_TPU_CH == 4)
+ 1,4,16,64,0,0,0,1024,
+#elif CONFIG_H8300_TPU_CH == 3
+ 1,4,16,64,0,1024,256,4096,
+#endif
+};
+
+void __init h8300_timer_setup(void)
+{
+ unsigned int cnt;
+ unsigned int div;
+
+ calc_param(cnt, div, divide_rate, 0x10000);
+
+ setup_irq(TPUIRQ, &tpu_irq);
+
+ /* TPU module enabled */
+ ctrl_bclr(3, MSTPCRH);
+
+ ctrl_outb(0, TSTR);
+ ctrl_outb(CCLR0 | div, TPUBASE + _TCR);
+ ctrl_outb(0, TPUBASE + _TMDR);
+ ctrl_outw(0, TPUBASE + _TIOR);
+ ctrl_outb(0x01, TPUBASE + _TIER);
+ ctrl_outw(cnt, TPUBASE + _GRA);
+ ctrl_bset(CONFIG_H8300_TPU_CH, TSTR);
+}
diff --git a/arch/h8300/kernel/traps.c b/arch/h8300/kernel/traps.c
index f8f7d7ea97f..3c0b66bc669 100644
--- a/arch/h8300/kernel/traps.c
+++ b/arch/h8300/kernel/traps.c
@@ -20,12 +20,14 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/bug.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/page.h>
-#include <asm/gpio.h>
+
+static DEFINE_SPINLOCK(die_lock);
/*
* this must be called very early as the kernel might
@@ -94,16 +96,19 @@ static void dump(struct pt_regs *fp)
printk("\n\n");
}
-void die_if_kernel (char *str, struct pt_regs *fp, int nr)
+void die(char *str, struct pt_regs *fp, unsigned long err)
{
- extern int console_loglevel;
+ static int diecount;
- if (!(fp->ccr & PS_S))
- return;
+ oops_enter();
- console_loglevel = 15;
+ console_verbose();
+ spin_lock_irq(&die_lock);
+ report_bug(fp->pc, fp);
+ printk(KERN_EMERG "%s: %04lx [#%d] ", str, err & 0xffff, ++diecount);
dump(fp);
+ spin_unlock_irq(&die_lock);
do_exit(SIGSEGV);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 10:19:36 +0000