help
Select SHMIN if configuring for the SHMIN board.
+config SH_7206_SOLUTION_ENGINE
+ bool "SolutionEngine7206"
+ select CPU_SUBTYPE_SH7206
+ help
+ Select 7206 SolutionEngine if configuring for a Hitachi SH7206
+ evaluation board.
+
+config SH_7619_SOLUTION_ENGINE
+ bool "SolutionEngine7619"
+ select CPU_SUBTYPE_SH7619
+ help
+ Select 7619 SolutionEngine if configuring for a Hitachi SH7619
+ evaluation board.
+
config SH_UNKNOWN
bool "BareCPU"
help
config SH_TMU
bool "TMU timer support"
+ depends on CPU_SH3 || CPU_SH4
default y
help
This enables the use of the TMU as the system timer.
+config SH_CMT
+ bool "CMT timer support"
+ depends on CPU_SH2
+ default y
+ help
+ This enables the use of the CMT as the system timer.
+
+config SH_MTU2
+ bool "MTU2 timer support"
+ depends on CPU_SH2A
+ default n
+ help
+ This enables the use of the MTU2 as the system timer.
+
endmenu
source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
config SH_PCLK_FREQ
int "Peripheral clock frequency (in Hz)"
+ default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
+ default "31250000" if CPU_SUBTYPE_SH7619
+ default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
+ CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
+ CPU_SUBTYPE_SH7206
default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
default "60000000" if CPU_SUBTYPE_SH7751
- default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
- CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705
- default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
default "66000000" if CPU_SUBTYPE_SH4_202
help
This option is used to specify the peripheral clock frequency.
This is necessary for determining the reference clock value on
platforms lacking an RTC.
+config SH_CLK_MD
+ int "CPU Mode Pin Setting"
+ depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
+ help
+ MD2 - MD0 Setting.
+
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
machdir-$(CONFIG_SH_LANDISK) := landisk
machdir-$(CONFIG_SH_TITAN) := titan
machdir-$(CONFIG_SH_SHMIN) := shmin
+machdir-$(CONFIG_SH_7206_SOLUTION_ENGINE) := se/7206
+machdir-$(CONFIG_SH_7619_SOLUTION_ENGINE) := se/7619
machdir-$(CONFIG_SH_UNKNOWN) := unknown
incdir-y := $(notdir $(machdir-y))
core-$(CONFIG_VOYAGERGX) += arch/sh/cchips/voyagergx/
cpuincdir-$(CONFIG_CPU_SH2) := cpu-sh2
+cpuincdir-$(CONFIG_CPU_SH2A) := cpu-sh2a
cpuincdir-$(CONFIG_CPU_SH3) := cpu-sh3
cpuincdir-$(CONFIG_CPU_SH4) := cpu-sh4
*/
#include <asm/uaccess.h>
+#include <asm/addrspace.h>
#ifdef CONFIG_SH_STANDARD_BIOS
#include <asm/sh_bios.h>
#endif
void decompress_kernel(void)
{
output_data = 0;
- output_ptr = (unsigned long)&_text+0x20001000;
+ output_ptr = P2SEGADDR((unsigned long)&_text+0x1000);
free_mem_ptr = (unsigned long)&_end;
free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
extra-y := head.o init_task.o vmlinux.lds
-obj-y := process.o signal.o entry.o traps.o irq.o \
+obj-y := process.o signal.o traps.o irq.o \
ptrace.o setup.o time.o sys_sh.o semaphore.o \
io.o io_generic.o sh_ksyms.o syscalls.o
# Makefile for the Linux/SuperH CPU-specifc backends.
#
-obj-y += irq/ init.o clock.o
-
-obj-$(CONFIG_CPU_SH2) += sh2/
-obj-$(CONFIG_CPU_SH3) += sh3/
-obj-$(CONFIG_CPU_SH4) += sh4/
+obj-$(CONFIG_CPU_SH2) = sh2/
+obj-$(CONFIG_CPU_SH2A) = sh2a/
+obj-$(CONFIG_CPU_SH3) = sh3/
+obj-$(CONFIG_CPU_SH4) = sh4/
obj-$(CONFIG_UBC_WAKEUP) += ubc.o
obj-$(CONFIG_SH_ADC) += adc.o
+
+obj-y += irq/ init.o clock.o
waysize = cpu_data->dcache.sets;
+#ifdef CCR_CACHE_ORA
/*
* If the OC is already in RAM mode, we only have
* half of the entries to flush..
*/
if (ccr & CCR_CACHE_ORA)
waysize >>= 1;
+#endif
waysize <<= cpu_data->dcache.entry_shift;
{
unsigned long __dummy;
- asm volatile("ldc %2, r6_bank\n\t"
+ asm volatile(
+#ifdef CONFIG_CPU_HAS_SR_RB
+ "ldc %2, r6_bank\n\t"
+#endif
"stc sr, %0\n\t"
"and #0xf0, %0\n\t"
"shlr2 %0\n\t"
}
EXPORT_SYMBOL(make_ipr_irq);
+/*
+ * XXX: Move this garbage in to the drivers, and kill off the ridiculous CPU
+ * subtype checks.
+ */
static struct ipr_data sys_ipr_map[] = {
#ifndef CONFIG_CPU_SUBTYPE_SH7780
{ TIMER_IRQ, TIMER_IPR_ADDR, TIMER_IPR_POS, TIMER_PRIORITY },
{ SCIF1_BRI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
{ SCIF1_TXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
#endif
+#ifdef SCIF2_ERI_IRQ
+ { SCIF2_ERI_IRQ, SCIF2_IPR_ADDR, SCIF2_IPR_POS, SCIF2_PRIORITY },
+ { SCIF2_RXI_IRQ, SCIF2_IPR_ADDR, SCIF2_IPR_POS, SCIF2_PRIORITY },
+ { SCIF2_BRI_IRQ, SCIF2_IPR_ADDR, SCIF2_IPR_POS, SCIF2_PRIORITY },
+ { SCIF2_TXI_IRQ, SCIF2_IPR_ADDR, SCIF2_IPR_POS, SCIF2_PRIORITY },
+#endif
+#ifdef SCIF3_ERI_IRQ
+ { SCIF3_ERI_IRQ, SCIF3_IPR_ADDR, SCIF3_IPR_POS, SCIF3_PRIORITY },
+ { SCIF3_RXI_IRQ, SCIF3_IPR_ADDR, SCIF3_IPR_POS, SCIF3_PRIORITY },
+ { SCIF3_BRI_IRQ, SCIF3_IPR_ADDR, SCIF3_IPR_POS, SCIF3_PRIORITY },
+ { SCIF3_TXI_IRQ, SCIF3_IPR_ADDR, SCIF3_IPR_POS, SCIF3_PRIORITY },
+#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7300)
{ SCIF0_IRQ, SCIF0_IPR_ADDR, SCIF0_IPR_POS, SCIF0_PRIORITY },
{ DMTE2_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY },
# Makefile for the Linux/SuperH SH-2 backends.
#
-obj-y := probe.o
+obj-y := ex.o probe.o entry.o
+obj-$(CONFIG_CPU_SUBTYPE_SH7619) += setup-sh7619.o clock-sh7619.o
--- /dev/null
+/*
+ * arch/sh/kernel/cpu/sh2/clock-sh7619.c
+ *
+ * SH7619 support for the clock framework
+ *
+ * Copyright (C) 2006 Yoshinori Sato
+ *
+ * Based on clock-sh4.c
+ * Copyright (C) 2005 Paul Mundt
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <asm/clock.h>
+#include <asm/freq.h>
+#include <asm/io.h>
+
+const static int pll1rate[]={1,2};
+const static int pfc_divisors[]={1,2,0,4};
+
+#if (CONFIG_SH_CLK_MD == 1) || (CONFIG_SH_CLK_MD == 2)
+#define PLL2 (4)
+#elif (CONFIG_SH_CLK_MD == 5) || (CONFIG_SH_CLK_MD == 6)
+#define PLL2 (2)
+#else
+#error "Illigal Clock Mode!"
+#endif
+
+static void master_clk_init(struct clk *clk)
+{
+ clk->rate *= PLL2 * pll1rate[(ctrl_inw(FREQCR) >> 8) & 7];
+}
+
+static struct clk_ops sh7619_master_clk_ops = {
+ .init = master_clk_init,
+};
+
+static void module_clk_recalc(struct clk *clk)
+{
+ int idx = (ctrl_inw(FREQCR) & 0x0007);
+ clk->rate = clk->parent->rate / pfc_divisors[idx];
+}
+
+static struct clk_ops sh7619_module_clk_ops = {
+ .recalc = module_clk_recalc,
+};
+
+static void bus_clk_recalc(struct clk *clk)
+{
+ clk->rate = clk->parent->rate / pll1rate[(ctrl_inw(FREQCR) >> 8) & 7];
+}
+
+static struct clk_ops sh7619_bus_clk_ops = {
+ .recalc = bus_clk_recalc,
+};
+
+static void cpu_clk_recalc(struct clk *clk)
+{
+ clk->rate = clk->parent->rate;
+}
+
+static struct clk_ops sh7619_cpu_clk_ops = {
+ .recalc = cpu_clk_recalc,
+};
+
+static struct clk_ops *sh7619_clk_ops[] = {
+ &sh7619_master_clk_ops,
+ &sh7619_module_clk_ops,
+ &sh7619_bus_clk_ops,
+ &sh7619_cpu_clk_ops,
+};
+
+void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
+{
+ if (idx < ARRAY_SIZE(sh7619_clk_ops))
+ *ops = sh7619_clk_ops[idx];
+}
+
int __init detect_cpu_and_cache_system(void)
{
- /*
- * For now, assume SH7604 .. fix this later.
- */
+#if defined(CONFIG_CPU_SUBTYPE_SH7604)
cpu_data->type = CPU_SH7604;
cpu_data->dcache.ways = 4;
- cpu_data->dcache.way_shift = 6;
+ cpu_data->dcache.way_incr = (1<<10);
cpu_data->dcache.sets = 64;
cpu_data->dcache.entry_shift = 4;
cpu_data->dcache.linesz = L1_CACHE_BYTES;
cpu_data->dcache.flags = 0;
-
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+ cpu_data->type = CPU_SH7619;
+ cpu_data->dcache.ways = 4;
+ cpu_data->dcache.way_incr = (1<<12);
+ cpu_data->dcache.sets = 256;
+ cpu_data->dcache.entry_shift = 4;
+ cpu_data->dcache.linesz = L1_CACHE_BYTES;
+ cpu_data->dcache.flags = 0;
+#endif
/*
* SH-2 doesn't have separate caches
*/
--- /dev/null
+/*
+ * SH7619 Setup
+ *
+ * Copyright (C) 2006 Yoshinori Sato
+ *
+ * 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/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <asm/sci.h>
+
+static struct plat_sci_port sci_platform_data[] = {
+ {
+ .mapbase = 0xf8400000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 88, 89, 91, 90},
+ }, {
+ .mapbase = 0xf8410000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 92, 93, 95, 94},
+ }, {
+ .mapbase = 0xf8420000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 96, 97, 99, 98},
+ }, {
+ .flags = 0,
+ }
+};
+
+static struct platform_device sci_device = {
+ .name = "sh-sci",
+ .id = -1,
+ .dev = {
+ .platform_data = sci_platform_data,
+ },
+};
+
+static struct platform_device *sh7619_devices[] __initdata = {
+ &sci_device,
+};
+
+static int __init sh7619_devices_setup(void)
+{
+ return platform_add_devices(sh7619_devices,
+ ARRAY_SIZE(sh7619_devices));
+}
+__initcall(sh7619_devices_setup);
--- /dev/null
+#
+# Makefile for the Linux/SuperH SH-2A backends.
+#
+
+obj-y := common.o probe.o
+
+common-y += $(addprefix ../sh2/, ex.o)
+common-y += $(addprefix ../sh2/, entry.o)
+
+obj-$(CONFIG_CPU_SUBTYPE_SH7206) += setup-sh7206.o clock-sh7206.o
--- /dev/null
+/*
+ * arch/sh/kernel/cpu/sh2a/clock-sh7206.c
+ *
+ * SH7206 support for the clock framework
+ *
+ * Copyright (C) 2006 Yoshinori Sato
+ *
+ * Based on clock-sh4.c
+ * Copyright (C) 2005 Paul Mundt
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <asm/clock.h>
+#include <asm/freq.h>
+#include <asm/io.h>
+
+const static int pll1rate[]={1,2,3,4,6,8};
+const static int pfc_divisors[]={1,2,3,4,6,8,12};
+#define ifc_divisors pfc_divisors
+
+#if (CONFIG_SH_CLK_MD == 2)
+#define PLL2 (4)
+#elif (CONFIG_SH_CLK_MD == 6)
+#define PLL2 (2)
+#elif (CONFIG_SH_CLK_MD == 7)
+#define PLL2 (1)
+#else
+#error "Illigal Clock Mode!"
+#endif
+
+static void master_clk_init(struct clk *clk)
+{
+ clk->rate *= PLL2 * pll1rate[(ctrl_inw(FREQCR) >> 8) & 0x0007];
+}
+
+static struct clk_ops sh7206_master_clk_ops = {
+ .init = master_clk_init,
+};
+
+static void module_clk_recalc(struct clk *clk)
+{
+ int idx = (ctrl_inw(FREQCR) & 0x0007);
+ clk->rate = clk->parent->rate / pfc_divisors[idx];
+}
+
+static struct clk_ops sh7206_module_clk_ops = {
+ .recalc = module_clk_recalc,
+};
+
+static void bus_clk_recalc(struct clk *clk)
+{
+ clk->rate = clk->parent->rate / pll1rate[(ctrl_inw(FREQCR) >> 8) & 0x0007];
+}
+
+static struct clk_ops sh7206_bus_clk_ops = {
+ .recalc = bus_clk_recalc,
+};
+
+static void cpu_clk_recalc(struct clk *clk)
+{
+ int idx = (ctrl_inw(FREQCR) & 0x0007);
+ clk->rate = clk->parent->rate / ifc_divisors[idx];
+}
+
+static struct clk_ops sh7206_cpu_clk_ops = {
+ .recalc = cpu_clk_recalc,
+};
+
+static struct clk_ops *sh7206_clk_ops[] = {
+ &sh7206_master_clk_ops,
+ &sh7206_module_clk_ops,
+ &sh7206_bus_clk_ops,
+ &sh7206_cpu_clk_ops,
+};
+
+void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
+{
+ if (idx < ARRAY_SIZE(sh7206_clk_ops))
+ *ops = sh7206_clk_ops[idx];
+}
+
--- /dev/null
+/*
+ * arch/sh/kernel/cpu/sh2a/probe.c
+ *
+ * CPU Subtype Probing for SH-2A.
+ *
+ * Copyright (C) 2004, 2005 Paul Mundt
+ *
+ * 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/init.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+
+int __init detect_cpu_and_cache_system(void)
+{
+ /* Just SH7206 for now .. */
+ cpu_data->type = CPU_SH7206;
+
+ cpu_data->dcache.ways = 4;
+ cpu_data->dcache.way_incr = (1 << 11);
+ cpu_data->dcache.sets = 128;
+ cpu_data->dcache.entry_shift = 4;
+ cpu_data->dcache.linesz = L1_CACHE_BYTES;
+ cpu_data->dcache.flags = 0;
+
+ /*
+ * The icache is the same as the dcache as far as this setup is
+ * concerned. The only real difference in hardware is that the icache
+ * lacks the U bit that the dcache has, none of this has any bearing
+ * on the cache info.
+ */
+ cpu_data->icache = cpu_data->dcache;
+
+ return 0;
+}
+
--- /dev/null
+/*
+ * SH7206 Setup
+ *
+ * Copyright (C) 2006 Yoshinori Sato
+ *
+ * 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/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <asm/sci.h>
+
+static struct plat_sci_port sci_platform_data[] = {
+ {
+ .mapbase = 0xfffe8000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 240, 241, 242, 243},
+ }, {
+ .mapbase = 0xfffe8800,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 244, 245, 246, 247},
+ }, {
+ .mapbase = 0xfffe9000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 248, 249, 250, 251},
+ }, {
+ .mapbase = 0xfffe9800,
+ .flags = UPF_BOOT_AUTOCONF,
+ .type = PORT_SCIF,
+ .irqs = { 252, 253, 254, 255},
+ }, {
+ .flags = 0,
+ }
+};
+
+static struct platform_device sci_device = {
+ .name = "sh-sci",
+ .id = -1,
+ .dev = {
+ .platform_data = sci_platform_data,
+ },
+};
+
+static struct platform_device *sh7206_devices[] __initdata = {
+ &sci_device,
+};
+
+static int __init sh7206_devices_setup(void)
+{
+ return platform_add_devices(sh7206_devices,
+ ARRAY_SIZE(sh7206_devices));
+}
+__initcall(sh7206_devices_setup);
[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
[CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780",
[CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343",
+ [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
[CPU_SH_NONE] = "Unknown"
};
*/
#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
-#define TRAP16 0xc310 /* Syscall w/no args (NR in R3) */
+#if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A)
+#define TRAP_NOARG 0xc320 /* Syscall w/no args (NR in R3) */
+#else
+#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) */
+#endif
#define OR_R0_R0 0x200b /* or r0,r0 (insert to avoid hardware bug) */
struct sigframe
} else {
/* Generate return code (system call to sigreturn) */
err |= __put_user(MOVW(7), &frame->retcode[0]);
- err |= __put_user(TRAP16, &frame->retcode[1]);
+ err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
err |= __put_user(OR_R0_R0, &frame->retcode[2]);
err |= __put_user(OR_R0_R0, &frame->retcode[3]);
err |= __put_user(OR_R0_R0, &frame->retcode[4]);
} else {
/* Generate return code (system call to rt_sigreturn) */
err |= __put_user(MOVW(7), &frame->retcode[0]);
- err |= __put_user(TRAP16, &frame->retcode[1]);
+ err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
err |= __put_user(OR_R0_R0, &frame->retcode[2]);
err |= __put_user(OR_R0_R0, &frame->retcode[3]);
err |= __put_user(OR_R0_R0, &frame->retcode[4]);
obj-y := timer.o
obj-$(CONFIG_SH_TMU) += timer-tmu.o
+obj-$(CONFIG_SH_MTU2) += timer-mtu2.o
+obj-$(CONFIG_SH_CMT) += timer-cmt.o
--- /dev/null
+/*
+ * arch/sh/kernel/timers/timer-cmt.c - CMT Timer Support
+ *
+ * Copyright (C) 2005 Yoshinori Sato
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/seqlock.h>
+#include <asm/timer.h>
+#include <asm/rtc.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/clock.h>
+
+#if defined(CONFIG_CPU_SUBTYPE_SH7619)
+#define CMT_CMSTR 0xf84a0070
+#define CMT_CMCSR_0 0xf84a0072
+#define CMT_CMCNT_0 0xf84a0074
+#define CMT_CMCOR_0 0xf84a0076
+#define CMT_CMCSR_1 0xf84a0078
+#define CMT_CMCNT_1 0xf84a007a
+#define CMT_CMCOR_1 0xf84a007c
+
+#define STBCR3 0xf80a0000
+#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR3) & ~0x10, STBCR3); } while(0)
+#define CMT_CMCSR_INIT 0x0040
+#define CMT_CMCSR_CALIB 0x0000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
+#define CMT_CMSTR 0xfffec000
+#define CMT_CMCSR_0 0xfffec002
+#define CMT_CMCNT_0 0xfffec004
+#define CMT_CMCOR_0 0xfffec006
+
+#define STBCR4 0xfffe040c
+#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR4) & ~0x04, STBCR4); } while(0)
+#define CMT_CMCSR_INIT 0x0040
+#define CMT_CMCSR_CALIB 0x0000
+#else
+#error "Unknown CPU SUBTYPE"
+#endif
+
+static DEFINE_SPINLOCK(cmt0_lock);
+
+static unsigned long cmt_timer_get_offset(void)
+{
+ int count;
+ unsigned long flags;
+
+ static unsigned short count_p = 0xffff; /* for the first call after boot */
+ static unsigned long jiffies_p = 0;
+
+ /*
+ * cache volatile jiffies temporarily; we have IRQs turned off.
+ */
+ unsigned long jiffies_t;
+
+ spin_lock_irqsave(&cmt0_lock, flags);
+ /* timer count may underflow right here */
+ count = ctrl_inw(CMT_CMCOR_0);
+ count -= ctrl_inw(CMT_CMCNT_0);
+
+ jiffies_t = jiffies;
+
+ /*
+ * avoiding timer inconsistencies (they are rare, but they happen)...
+ * there is one kind of problem that must be avoided here:
+ * 1. the timer counter underflows
+ */
+
+ if (jiffies_t == jiffies_p) {
+ if (count > count_p) {
+ /* the nutcase */
+ if (ctrl_inw(CMT_CMCSR_0) & 0x80) { /* Check CMF bit */
+ count -= LATCH;
+ } else {
+ printk("%s (): hardware timer problem?\n",
+ __FUNCTION__);
+ }
+ }
+ } else
+ jiffies_p = jiffies_t;
+
+ count_p = count;
+ spin_unlock_irqrestore(&cmt0_lock, flags);
+
+ count = ((LATCH-1) - count) * TICK_SIZE;
+ count = (count + LATCH/2) / LATCH;
+
+ return count;
+}
+
+static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ unsigned long timer_status;
+
+ /* Clear CMF bit */
+ timer_status = ctrl_inw(CMT_CMCSR_0);
+ timer_status &= ~0x80;
+ ctrl_outw(timer_status, CMT_CMCSR_0);
+
+ /*
+ * Here we are in the timer irq handler. We just have irqs locally
+ * disabled but we don't know if the timer_bh is running on the other
+ * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
+ * the irq version of write_lock because as just said we have irq
+ * locally disabled. -arca
+ */
+ write_seqlock(&xtime_lock);
+ handle_timer_tick(regs);
+ write_sequnlock(&xtime_lock);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction cmt_irq = {
+ .name = "timer",
+ .handler = cmt_timer_interrupt,
+ .flags = SA_INTERRUPT,
+ .mask = CPU_MASK_NONE,
+};
+
+/*
+ * Hah! We'll see if this works (switching from usecs to nsecs).
+ */
+static unsigned long cmt_timer_get_frequency(void)
+{
+ u32 freq;
+ struct timespec ts1, ts2;
+ unsigned long diff_nsec;
+ unsigned long factor;
+
+ /* Setup the timer: We don't want to generate interrupts, just
+ * have it count down at its natural rate.
+ */
+
+ ctrl_outw(ctrl_inw(CMT_CMSTR) & ~0x01, CMT_CMSTR);
+ ctrl_outw(CMT_CMCSR_CALIB, CMT_CMCSR_0);
+ ctrl_outw(0xffff, CMT_CMCOR_0);
+ ctrl_outw(0xffff, CMT_CMCNT_0);
+
+ rtc_sh_get_time(&ts2);
+
+ do {
+ rtc_sh_get_time(&ts1);
+ } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
+
+ /* actually start the timer */
+ ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
+
+ do {
+ rtc_sh_get_time(&ts2);
+ } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
+
+ freq = 0xffff - ctrl_inw(CMT_CMCNT_0);
+ if (ts2.tv_nsec < ts1.tv_nsec) {
+ ts2.tv_nsec += 1000000000;
+ ts2.tv_sec--;
+ }
+
+ diff_nsec = (ts2.tv_sec - ts1.tv_sec) * 1000000000 + (ts2.tv_nsec - ts1.tv_nsec);
+
+ /* this should work well if the RTC has a precision of n Hz, where
+ * n is an integer. I don't think we have to worry about the other
+ * cases. */
+ factor = (1000000000 + diff_nsec/2) / diff_nsec;
+
+ if (factor * diff_nsec > 1100000000 ||
+ factor * diff_nsec < 900000000)
+ panic("weird RTC (diff_nsec %ld)", diff_nsec);
+
+ return freq * factor;
+}
+
+static void cmt_clk_init(struct clk *clk)
+{
+ u8 divisor = CMT_CMCSR_INIT & 0x3;
+ ctrl_inw(CMT_CMCSR_0);
+ ctrl_outw(CMT_CMCSR_INIT, CMT_CMCSR_0);
+ clk->parent = clk_get("module_clk");
+ clk->rate = clk->parent->rate / (8 << (divisor << 1));
+}
+
+static void cmt_clk_recalc(struct clk *clk)
+{
+ u8 divisor = ctrl_inw(CMT_CMCSR_0) & 0x3;
+ clk->rate = clk->parent->rate / (8 << (divisor << 1));
+}
+
+static struct clk_ops cmt_clk_ops = {
+ .init = cmt_clk_init,
+ .recalc = cmt_clk_recalc,
+};
+
+static struct clk cmt0_clk = {
+ .name = "cmt0_clk",
+ .ops = &cmt_clk_ops,
+};
+
+static int cmt_timer_start(void)
+{
+ ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
+ return 0;
+}
+
+static int cmt_timer_stop(void)
+{
+ ctrl_outw(ctrl_inw(CMT_CMSTR) & ~0x01, CMT_CMSTR);
+ return 0;
+}
+
+static int cmt_timer_init(void)
+{
+ unsigned long interval;
+
+ cmt_clock_enable();
+
+ setup_irq(TIMER_IRQ, &cmt_irq);
+
+ cmt0_clk.parent = clk_get("module_clk");
+
+ cmt_timer_stop();
+
+ interval = cmt0_clk.parent->rate / 8 / HZ;
+ printk(KERN_INFO "Interval = %ld\n", interval);
+
+ ctrl_outw(interval, CMT_CMCOR_0);
+
+ clk_register(&cmt0_clk);
+ clk_enable(&cmt0_clk);
+
+ cmt_timer_start();
+
+ return 0;
+}
+
+struct sys_timer_ops cmt_timer_ops = {
+ .init = cmt_timer_init,
+ .start = cmt_timer_start,
+ .stop = cmt_timer_stop,
+ .get_frequency = cmt_timer_get_frequency,
+ .get_offset = cmt_timer_get_offset,
+};
+
+struct sys_timer cmt_timer = {
+ .name = "cmt",
+ .ops = &cmt_timer_ops,
+};
+
--- /dev/null
+/*
+ * arch/sh/kernel/timers/timer-mtu2.c - MTU2 Timer Support
+ *
+ * Copyright (C) 2005 Paul Mundt
+ *
+ * Based off of arch/sh/kernel/timers/timer-tmu.c
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/seqlock.h>
+#include <asm/timer.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/clock.h>
+
+/*
+ * We use channel 1 for our lowly system timer. Channel 2 would be the other
+ * likely candidate, but we leave it alone as it has higher divisors that
+ * would be of more use to other more interesting applications.
+ *
+ * TODO: Presently we only implement a 16-bit single-channel system timer.
+ * However, we can implement channel cascade if we go the overflow route and
+ * get away with using 2 MTU2 channels as a 32-bit timer.
+ */
+
+static DEFINE_SPINLOCK(mtu2_lock);
+
+#define MTU2_TSTR 0xfffe4280
+#define MTU2_TCR_1 0xfffe4380
+#define MTU2_TMDR_1 0xfffe4381
+#define MTU2_TIOR_1 0xfffe4382
+#define MTU2_TIER_1 0xfffe4384
+#define MTU2_TSR_1 0xfffe4385
+#define MTU2_TCNT_1 0xfffe4386 /* 16-bit counter */
+#define MTU2_TGRA_1 0xfffe438a
+
+#define STBCR3 0xfffe0408
+
+#define MTU2_TSTR_CST1 (1 << 1) /* Counter Start 1 */
+
+#define MTU2_TSR_TGFA (1 << 0) /* GRA compare match */
+
+#define MTU2_TIER_TGIEA (1 << 0) /* GRA compare match interrupt enable */
+
+#define MTU2_TCR_INIT 0x22
+
+#define MTU2_TCR_CALIB 0x00
+
+static unsigned long mtu2_timer_get_offset(void)
+{
+ int count;
+ unsigned long flags;
+
+ static int count_p = 0x7fff; /* for the first call after boot */
+ static unsigned long jiffies_p = 0;
+
+ /*
+ * cache volatile jiffies temporarily; we have IRQs turned off.
+ */
+ unsigned long jiffies_t;
+
+ spin_lock_irqsave(&mtu2_lock, flags);
+ /* timer count may underflow right here */
+ count = ctrl_inw(MTU2_TCNT_1); /* read the latched count */
+
+ jiffies_t = jiffies;
+
+ /*
+ * avoiding timer inconsistencies (they are rare, but they happen)...
+ * there is one kind of problem that must be avoided here:
+ * 1. the timer counter underflows
+ */
+
+ if (jiffies_t == jiffies_p) {
+ if (count > count_p) {
+ if (ctrl_inb(MTU2_TSR_1) & MTU2_TSR_TGFA) {
+ count -= LATCH;
+ } else {
+ printk("%s (): hardware timer problem?\n",
+ __FUNCTION__);
+ }
+ }
+ } else
+ jiffies_p = jiffies_t;
+
+ count_p = count;
+ spin_unlock_irqrestore(&mtu2_lock, flags);
+
+ count = ((LATCH-1) - count) * TICK_SIZE;
+ count = (count + LATCH/2) / LATCH;
+
+ return count;
+}
+
+static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ unsigned long timer_status;
+
+ /* Clear TGFA bit */
+ timer_status = ctrl_inb(MTU2_TSR_1);
+ timer_status &= ~MTU2_TSR_TGFA;
+ ctrl_outb(timer_status, MTU2_TSR_1);
+
+ /* Do timer tick */
+ write_seqlock(&xtime_lock);
+ handle_timer_tick(regs);
+ write_sequnlock(&xtime_lock);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction mtu2_irq = {
+ .name = "timer",
+ .handler = mtu2_timer_interrupt,
+ .flags = SA_INTERRUPT,
+ .mask = CPU_MASK_NONE,
+};
+
+/*
+ * Hah! We'll see if this works (switching from usecs to nsecs).
+ */
+static unsigned long mtu2_timer_get_frequency(void)
+{
+ u32 freq;
+ struct timespec ts1, ts2;
+ unsigned long diff_nsec;
+ unsigned long factor;
+
+ /* Setup the timer: We don't want to generate interrupts, just
+ * have it count down at its natural rate.
+ */
+
+ ctrl_outb(ctrl_inb(MTU2_TSTR) & ~MTU2_TSTR_CST1, MTU2_TSTR);
+ ctrl_outb(MTU2_TCR_CALIB, MTU2_TCR_1);
+ ctrl_outb(ctrl_inb(MTU2_TIER_1) & ~MTU2_TIER_TGIEA, MTU2_TIER_1);
+ ctrl_outw(0, MTU2_TCNT_1);
+
+ rtc_get_time(&ts2);
+
+ do {
+ rtc_get_time(&ts1);
+ } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
+
+ /* actually start the timer */
+ ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
+
+ do {
+ rtc_get_time(&ts2);
+ } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
+
+ freq = ctrl_inw(MTU2_TCNT_0);
+ if (ts2.tv_nsec < ts1.tv_nsec) {
+ ts2.tv_nsec += 1000000000;
+ ts2.tv_sec--;
+ }
+
+ diff_nsec = (ts2.tv_sec - ts1.tv_sec) * 1000000000 + (ts2.tv_nsec - ts1.tv_nsec);
+
+ /* this should work well if the RTC has a precision of n Hz, where
+ * n is an integer. I don't think we have to worry about the other
+ * cases. */
+ factor = (1000000000 + diff_nsec/2) / diff_nsec;
+
+ if (factor * diff_nsec > 1100000000 ||
+ factor * diff_nsec < 900000000)
+ panic("weird RTC (diff_nsec %ld)", diff_nsec);
+
+ return freq * factor;
+}
+
+static unsigned int divisors[] = { 1, 4, 16, 64, 1, 1, 256 };
+
+static void mtu2_clk_init(struct clk *clk)
+{
+ u8 idx = MTU2_TCR_INIT & 0x7;
+
+ clk->rate = clk->parent->rate / divisors[idx];
+ /* Start TCNT counting */
+ ctrl_outb(ctrl_inb(MTU2_TSTR) | MTU2_TSTR_CST1, MTU2_TSTR);
+
+}
+
+static void mtu2_clk_recalc(struct clk *clk)
+{
+ u8 idx = ctrl_inb(MTU2_TCR_1) & 0x7;
+ clk->rate = clk->parent->rate / divisors[idx];
+}
+
+static struct clk_ops mtu2_clk_ops = {
+ .init = mtu2_clk_init,
+ .recalc = mtu2_clk_recalc,
+};
+
+static struct clk mtu2_clk1 = {
+ .name = "mtu2_clk1",
+ .ops = &mtu2_clk_ops,
+};
+
+static int mtu2_timer_start(void)
+{
+ ctrl_outb(ctrl_inb(MTU2_TSTR) | MTU2_TSTR_CST1, MTU2_TSTR);
+ return 0;
+}
+
+static int mtu2_timer_stop(void)
+{
+ ctrl_outb(ctrl_inb(MTU2_TSTR) & ~MTU2_TSTR_CST1, MTU2_TSTR);
+ return 0;
+}
+
+static int mtu2_timer_init(void)
+{
+ u8 tmp;
+ unsigned long interval;
+
+ setup_irq(TIMER_IRQ, &mtu2_irq);
+
+ mtu2_clk1.parent = clk_get("module_clk");
+
+ ctrl_outb(ctrl_inb(STBCR3) & (~0x20), STBCR3);
+
+ /* Normal operation */
+ ctrl_outb(0, MTU2_TMDR_1);
+ ctrl_outb(MTU2_TCR_INIT, MTU2_TCR_1);
+ ctrl_outb(0x01, MTU2_TIOR_1);
+
+ /* Enable underflow interrupt */
+ ctrl_outb(ctrl_inb(MTU2_TIER_1) | MTU2_TIER_TGIEA, MTU2_TIER_1);
+
+ interval = CONFIG_SH_PCLK_FREQ / 16 / HZ;
+ printk(KERN_INFO "Interval = %ld\n", interval);
+
+ ctrl_outw(interval, MTU2_TGRA_1);
+ ctrl_outw(0, MTU2_TCNT_1);
+
+ clk_register(&mtu2_clk1);
+ clk_enable(&mtu2_clk1);
+
+ return 0;
+}
+
+struct sys_timer_ops mtu2_timer_ops = {
+ .init = mtu2_timer_init,
+ .start = mtu2_timer_start,
+ .stop = mtu2_timer_stop,
+ .get_frequency = mtu2_timer_get_frequency,
+ .get_offset = mtu2_timer_get_offset,
+};
+
+struct sys_timer mtu2_timer = {
+ .name = "mtu2",
+ .ops = &mtu2_timer_ops,
+};
#ifdef CONFIG_SH_TMU
&tmu_timer,
#endif
+#ifdef CONFIG_SH_MTU2
+ &mtu2_timer,
+#endif
+#ifdef CONFIG_SH_CMT
+ &cmt_timer,
+#endif
NULL,
};
# Processor families
#
config CPU_SH2
+ select SH_WRITETHROUGH if !CPU_SH2A
bool
- select SH_WRITETHROUGH
+
+config CPU_SH2A
+ bool
+ select CPU_SH2
config CPU_SH3
bool
bool "Support SH7604 processor"
select CPU_SH2
+config CPU_SUBTYPE_SH7619
+ bool "Support SH7619 processor"
+ select CPU_SH2
+
+comment "SH-2A Processor Support"
+
+config CPU_SUBTYPE_SH7206
+ bool "Support SH7206 processor"
+ select CPU_SH2A
+
comment "SH-3 Processor Support"
config CPU_SUBTYPE_SH7300
config SH_WRITETHROUGH
bool "Use write-through caching"
- default y if CPU_SH2
help
Selecting this option will configure the caches in write-through
mode, as opposed to the default write-back configuration.
*
* Released under the terms of the GNU GPL v2.0.
*/
+
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
-/*
- * Calculate the OC address and set the way bit on the SH-2.
- *
- * We must have already jump_to_P2()'ed prior to calling this
- * function, since we rely on CCR manipulation to do the
- * Right Thing(tm).
- */
-unsigned long __get_oc_addr(unsigned long set, unsigned long way)
+void __flush_wback_region(void *start, int size)
{
- unsigned long ccr;
-
- /*
- * On SH-2 the way bit isn't tracked in the address field
- * if we're doing address array access .. instead, we need
- * to manually switch out the way in the CCR.
- */
- ccr = ctrl_inl(CCR);
- ccr &= ~0x00c0;
- ccr |= way << cpu_data->dcache.way_shift;
-
- /*
- * Despite the number of sets being halved, we end up losing
- * the first 2 ways to OCRAM instead of the last 2 (if we're
- * 4-way). As a result, forcibly setting the W1 bit handily
- * bumps us up 2 ways.
- */
- if (ccr & CCR_CACHE_ORA)
- ccr |= 1 << (cpu_data->dcache.way_shift + 1);
-
- ctrl_outl(ccr, CCR);
-
- return CACHE_OC_ADDRESS_ARRAY | (set << cpu_data->dcache.entry_shift);
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ /* FIXME cache purge */
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
+}
+
+void __flush_purge_region(void *start, int size)
+{
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
+}
+
+void __flush_invalidate_region(void *start, int size)
+{
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
}
TITAN SH_TITAN
SHMIN SH_SHMIN
7710VOIPGW SH_7710VOIPGW
+7206SE SH_7206_SOLUTION_ENGINE
+7619SE SH_7619_SOLUTION_ENGINE
# define SCIF_ORER 0x0001 /* Overrun error bit */
# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
+# define SCSPTR0 0xfffe8020 /* 16 bit SCIF */
+# define SCSPTR1 0xfffe8820 /* 16 bit SCIF */
+# define SCSPTR2 0xfffe9020 /* 16 bit SCIF */
+# define SCSPTR3 0xfffe9820 /* 16 bit SCIF */
+# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+# define SCSPTR0 0xf8400020 /* 16 bit SCIF */
+# define SCSPTR1 0xf8410020 /* 16 bit SCIF */
+# define SCSPTR2 0xf8420020 /* 16 bit SCIF */
+# define SCIF_ORER 0x0001 /* overrun error bit */
+# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
#else
# error CPU subtype not defined
#endif
if (port->mapbase == 0xffe10000)
return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+ if (port->mapbase == 0xfffe8000)
+ return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe8800)
+ return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe9000)
+ return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe9800)
+ return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
+}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+ if (port->mapbase == 0xf8400000)
+ return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xf8410000)
+ return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xf8420000)
+ return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+}
#endif
/*
projects / linux-flexiantxendom0-natty.git / commitdiff