Commit 9d4436a6 authored by Yoshinori Sato's avatar Yoshinori Sato Committed by Paul Mundt

sh: Add support for SH7206 and SH7619 CPU subtypes.

This implements initial support for the SH7206 (SH-2A) and SH7619
(SH-2) MMU-less CPUs.
Signed-off-by: default avatarYoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent e6243863
......@@ -219,6 +219,20 @@ config SH_SHMIN
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
......@@ -364,10 +378,25 @@ depends on !GENERIC_TIME
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"
......@@ -378,17 +407,25 @@ source "arch/sh/boards/renesas/r7780rp/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"
......
......@@ -109,6 +109,8 @@ machdir-$(CONFIG_SH_SH4202_MICRODEV) := superh/microdev
machdir-$(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 $(machdir-y))
......@@ -124,6 +126,7 @@ core-$(CONFIG_HD64465) += arch/sh/cchips/hd6446x/hd64465/
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-$(CONFIG_CPU_SH4) := cpu-sh4
......
......@@ -12,6 +12,7 @@
*/
#include <asm/uaccess.h>
#include <asm/addrspace.h>
#ifdef CONFIG_SH_STANDARD_BIOS
#include <asm/sh_bios.h>
#endif
......@@ -228,7 +229,7 @@ long* stack_start = &user_stack[STACK_SIZE];
void decompress_kernel(void)
{
output_data = 0;
output_ptr = (unsigned long)&_text+0x20001000;
output_ptr = P2SEGADDR((unsigned long)&_text+0x1000);
free_mem_ptr = (unsigned long)&_end;
free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
......
......@@ -4,7 +4,7 @@
extra-y := head.o init_task.o vmlinux.lds
obj-y := process.o signal.o entry.o traps.o irq.o \
obj-y := process.o signal.o traps.o irq.o \
ptrace.o setup.o time.o sys_sh.o semaphore.o \
io.o io_generic.o sh_ksyms.o syscalls.o
......
......@@ -2,11 +2,12 @@
# Makefile for the Linux/SuperH CPU-specifc backends.
#
obj-y += irq/ init.o clock.o
obj-$(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
......@@ -68,12 +68,14 @@ static void __init cache_init(void)
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;
......
......@@ -53,7 +53,10 @@ void static inline set_interrupt_registers(int ip)
{
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"
......
......@@ -62,6 +62,10 @@ void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs)
}
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 },
......@@ -80,6 +84,18 @@ static struct ipr_data sys_ipr_map[] = {
{ 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 },
......
......@@ -2,5 +2,6 @@
# 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
/*
* 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];
}
......@@ -17,17 +17,23 @@
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
*/
......
/*
* 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);
#
# 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
/*
* 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];
}
/*
* 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;
}
/*
* 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);
......@@ -404,6 +404,7 @@ static const char *cpu_name[] = {
[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"
};
......
......@@ -98,7 +98,11 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
*/
#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
......@@ -350,7 +354,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
} 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]);
......@@ -430,7 +434,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
} 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]);
......
......@@ -5,4 +5,6 @@
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
/*
* 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,
};
/*
* 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,
};
......@@ -16,6 +16,12 @@
static struct sys_timer *sys_timers[] __initdata = {
#ifdef CONFIG_SH_TMU
&tmu_timer,
#endif
#ifdef CONFIG_SH_MTU2
&mtu2_timer,
#endif
#ifdef CONFIG_SH_CMT
&cmt_timer,
#endif
NULL,
};
......
......@@ -4,8 +4,12 @@ menu "Processor selection"
# 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
......@@ -40,6 +44,16 @@ config CPU_SUBTYPE_SH7604
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
......@@ -274,7 +288,6 @@ config SH_DIRECT_MAPPED
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.
......
......@@ -5,6 +5,7 @@
*
* Released under the terms of the GNU GPL v2.0.
*/
#include <linux/init.h>
#include <linux/mm.h>
......@@ -14,37 +15,43 @@
#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);
}
}
......@@ -30,3 +30,5 @@ R7780MP SH_R7780MP
TITAN SH_TITAN
SHMIN SH_SHMIN
7710VOIPGW SH_7710VOIPGW
7206SE SH_7206_SOLUTION_ENGINE
7619SE SH_7619_SOLUTION_ENGINE
......@@ -133,6 +133,20 @@
# 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
......@@ -544,6 +558,28 @@ static inline int sci_rxd_in(struct uart_port *port)
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
/*
......
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