ARMV7: S5P: make s5p-common for sharing the code between s5pc1xx and s5pc2xx

This patch adds basic support for s5pc210. s5p-common will be used by all of s5p SoCs. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

ARMV7: S5P: make s5p-common for sharing the code between s5pc1xx and s5pc2xx
This patch adds basic support for s5pc210. s5p-common will be used by all of s5p SoCs. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Minkyu Kang
1 parent d93d0f0cfe
Showing 7 changed files with 302 additions and 251 deletions Side-by-side Diff
Makefile
arch/arm/cpu/armv7/s5p-common/Makefile
arch/arm/cpu/armv7/s5p-common/cpu_info.c
arch/arm/cpu/armv7/s5p-common/timer.c
arch/arm/cpu/armv7/s5pc1xx/Makefile
arch/arm/cpu/armv7/s5pc1xx/cpu_info.c
arch/arm/cpu/armv7/s5pc1xx/timer.c
@@ -253,6 +253,13 @@
 LIBS += $(CPUDIR)/omap-common/libomap-common.a
 endif
  
+ifeq ($(SOC),s5pc1xx)
+LIBS += $(CPUDIR)/s5p-common/libs5p-common.a
+endif
+ifeq ($(SOC),s5pc2xx)
+LIBS += $(CPUDIR)/s5p-common/libs5p-common.a
+endif
+
 LIBS := $(addprefix $(obj),$(LIBS))
 .PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)
  
+#
+# Copyright (C) 2009 Samsung Electronics
+# Minkyu Kang <mk7.kang@samsung.com>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)libs5p-common.a
+
+COBJS-y		+= cpu_info.o
+COBJS-y		+= timer.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y) $(SOBJS))
+
+all:	 $(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clk.h>
+
+/* Default is s5pc100 */
+unsigned int s5pc1xx_cpu_id = 0xC100;
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+	s5pc1xx_cpu_id = readl(samsung_get_base_pro_id());
+	s5pc1xx_cpu_id = 0xC000 | ((s5pc1xx_cpu_id & 0x00FFF000) >> 12);
+
+	s5pc1xx_clock_init();
+
+	return 0;
+}
+#endif
+
+u32 get_device_type(void)
+{
+	return s5pc1xx_cpu_id;
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+	char buf[32];
+
+	printf("CPU:\tS5P%X@%sMHz\n",
+			s5pc1xx_cpu_id, strmhz(buf, get_arm_clk()));
+
+	return 0;
+}
+#endif
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Heungjun Kim <riverful.kim@samsung.com>
+ * Inki Dae <inki.dae@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/pwm.h>
+#include <asm/arch/clk.h>
+
+#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */
+#define MUX_DIV_2		1		/* 1/2 period */
+#define MUX_DIV_4		2		/* 1/4 period */
+#define MUX_DIV_8		3		/* 1/8 period */
+#define MUX_DIV_16		4		/* 1/16 period */
+#define MUX4_DIV_SHIFT		16
+
+#define TCON_TIMER4_SHIFT	20
+
+static unsigned long count_value;
+
+/* Internal tick units */
+static unsigned long long timestamp;	/* Monotonic incrementing timer */
+static unsigned long lastdec;		/* Last decremneter snapshot */
+
+/* macro to read the 16 bit timer */
+static inline struct s5pc1xx_timer *s5pc1xx_get_base_timer(void)
+{
+	return (struct s5pc1xx_timer *)samsung_get_base_timer();
+}
+
+int timer_init(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+	u32 val;
+
+	/*
+	 * @ PWM Timer 4
+	 * Timer Freq(HZ) =
+	 *	PCLK / { (prescaler_value + 1) * (divider_value) }
+	 */
+
+	/* set prescaler : 16 */
+	/* set divider : 2 */
+	writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
+	writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
+
+	if (count_value == 0) {
+		/* reset initial value */
+		/* count_value = 2085937.5(HZ) (per 1 sec)*/
+		count_value = get_pclk() / ((PRESCALER_1 + 1) *
+				(MUX_DIV_2 + 1));
+
+		/* count_value / 100 = 20859.375(HZ) (per 10 msec) */
+		count_value = count_value / 100;
+	}
+
+	/* set count value */
+	writel(count_value, &timer->tcntb4);
+	lastdec = count_value;
+
+	val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) |
+		S5PC1XX_TCON4_AUTO_RELOAD;
+
+	/* auto reload & manual update */
+	writel(val | S5PC1XX_TCON4_UPDATE, &timer->tcon);
+
+	/* start PWM timer 4 */
+	writel(val | S5PC1XX_TCON4_START, &timer->tcon);
+
+	timestamp = 0;
+
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+void reset_timer(void)
+{
+	reset_timer_masked();
+}
+
+unsigned long get_timer(unsigned long base)
+{
+	return get_timer_masked() - base;
+}
+
+void set_timer(unsigned long t)
+{
+	timestamp = t;
+}
+
+/* delay x useconds */
+void __udelay(unsigned long usec)
+{
+	unsigned long tmo, tmp;
+
+	if (usec >= 1000) {
+		/*
+		 * if "big" number, spread normalization
+		 * to seconds
+		 * 1. start to normalize for usec to ticks per sec
+		 * 2. find number of "ticks" to wait to achieve target
+		 * 3. finish normalize.
+		 */
+		tmo = usec / 1000;
+		tmo *= (CONFIG_SYS_HZ * count_value / 10);
+		tmo /= 1000;
+	} else {
+		/* else small number, don't kill it prior to HZ multiply */
+		tmo = usec * CONFIG_SYS_HZ * count_value / 10;
+		tmo /= (1000 * 1000);
+	}
+
+	/* get current timestamp */
+	tmp = get_timer(0);
+
+	/* if setting this fordward will roll time stamp */
+	/* reset "advancing" timestamp to 0, set lastdec value */
+	/* else, set advancing stamp wake up time */
+	if ((tmo + tmp + 1) < tmp)
+		reset_timer_masked();
+	else
+		tmo += tmp;
+
+	/* loop till event */
+	while (get_timer_masked() < tmo)
+		;	/* nop */
+}
+
+void reset_timer_masked(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+
+	/* reset time */
+	lastdec = readl(&timer->tcnto4);
+	timestamp = 0;
+}
+
+unsigned long get_timer_masked(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+	unsigned long now = readl(&timer->tcnto4);
+
+	if (lastdec >= now)
+		timestamp += lastdec - now;
+	else
+		timestamp += lastdec + count_value - now;
+
+	lastdec = now;
+
+	return timestamp;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+unsigned long get_tbclk(void)
+{
+	return CONFIG_SYS_HZ;
+}
@@ -32,9 +32,7 @@
 SOBJS	+= reset.o
  
 COBJS	+= clock.o
-COBJS	+= cpu_info.o
 COBJS	+= sromc.o
-COBJS	+= timer.o
  
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
-/*
- * Copyright (C) 2009 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/clk.h>
-
-/* Default is s5pc100 */
-unsigned int s5pc1xx_cpu_id = 0xC100;
-
-#ifdef CONFIG_ARCH_CPU_INIT
-int arch_cpu_init(void)
-{
-	s5pc1xx_cpu_id = readl(samsung_get_base_pro_id());
-	s5pc1xx_cpu_id = 0xC000 | ((s5pc1xx_cpu_id & 0x00FFF000) >> 12);
-
-	s5pc1xx_clock_init();
-
-	return 0;
-}
-#endif
-
-u32 get_device_type(void)
-{
-	return s5pc1xx_cpu_id;
-}
-
-#ifdef CONFIG_DISPLAY_CPUINFO
-int print_cpuinfo(void)
-{
-	char buf[32];
-
-	printf("CPU:\tS5P%X@%sMHz\n",
-			s5pc1xx_cpu_id, strmhz(buf, get_arm_clk()));
-
-	return 0;
-}
-#endif
-/*
- * Copyright (C) 2009 Samsung Electronics
- * Heungjun Kim <riverful.kim@samsung.com>
- * Inki Dae <inki.dae@samsung.com>
- * Minkyu Kang <mk7.kang@samsung.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/pwm.h>
-#include <asm/arch/clk.h>
-
-#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */
-#define MUX_DIV_2		1		/* 1/2 period */
-#define MUX_DIV_4		2		/* 1/4 period */
-#define MUX_DIV_8		3		/* 1/8 period */
-#define MUX_DIV_16		4		/* 1/16 period */
-#define MUX4_DIV_SHIFT		16
-
-#define TCON_TIMER4_SHIFT	20
-
-static unsigned long count_value;
-
-/* Internal tick units */
-static unsigned long long timestamp;	/* Monotonic incrementing timer */
-static unsigned long lastdec;		/* Last decremneter snapshot */
-
-/* macro to read the 16 bit timer */
-static inline struct s5pc1xx_timer *s5pc1xx_get_base_timer(void)
-{
-	return (struct s5pc1xx_timer *)samsung_get_base_timer();
-}
-
-int timer_init(void)
-{
-	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
-	u32 val;
-
-	/*
-	 * @ PWM Timer 4
-	 * Timer Freq(HZ) =
-	 *	PCLK / { (prescaler_value + 1) * (divider_value) }
-	 */
-
-	/* set prescaler : 16 */
-	/* set divider : 2 */
-	writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
-	writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
-
-	if (count_value == 0) {
-		/* reset initial value */
-		/* count_value = 2085937.5(HZ) (per 1 sec)*/
-		count_value = get_pclk() / ((PRESCALER_1 + 1) *
-				(MUX_DIV_2 + 1));
-
-		/* count_value / 100 = 20859.375(HZ) (per 10 msec) */
-		count_value = count_value / 100;
-	}
-
-	/* set count value */
-	writel(count_value, &timer->tcntb4);
-	lastdec = count_value;
-
-	val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) |
-		S5PC1XX_TCON4_AUTO_RELOAD;
-
-	/* auto reload & manual update */
-	writel(val | S5PC1XX_TCON4_UPDATE, &timer->tcon);
-
-	/* start PWM timer 4 */
-	writel(val | S5PC1XX_TCON4_START, &timer->tcon);
-
-	timestamp = 0;
-
-	return 0;
-}
-
-/*
- * timer without interrupts
- */
-void reset_timer(void)
-{
-	reset_timer_masked();
-}
-
-unsigned long get_timer(unsigned long base)
-{
-	return get_timer_masked() - base;
-}
-
-void set_timer(unsigned long t)
-{
-	timestamp = t;
-}
-
-/* delay x useconds */
-void __udelay(unsigned long usec)
-{
-	unsigned long tmo, tmp;
-
-	if (usec >= 1000) {
-		/*
-		 * if "big" number, spread normalization
-		 * to seconds
-		 * 1. start to normalize for usec to ticks per sec
-		 * 2. find number of "ticks" to wait to achieve target
-		 * 3. finish normalize.
-		 */
-		tmo = usec / 1000;
-		tmo *= (CONFIG_SYS_HZ * count_value / 10);
-		tmo /= 1000;
-	} else {
-		/* else small number, don't kill it prior to HZ multiply */
-		tmo = usec * CONFIG_SYS_HZ * count_value / 10;
-		tmo /= (1000 * 1000);
-	}
-
-	/* get current timestamp */
-	tmp = get_timer(0);
-
-	/* if setting this fordward will roll time stamp */
-	/* reset "advancing" timestamp to 0, set lastdec value */
-	/* else, set advancing stamp wake up time */
-	if ((tmo + tmp + 1) < tmp)
-		reset_timer_masked();
-	else
-		tmo += tmp;
-
-	/* loop till event */
-	while (get_timer_masked() < tmo)
-		;	/* nop */
-}
-
-void reset_timer_masked(void)
-{
-	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
-
-	/* reset time */
-	lastdec = readl(&timer->tcnto4);
-	timestamp = 0;
-}
-
-unsigned long get_timer_masked(void)
-{
-	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
-	unsigned long now = readl(&timer->tcnto4);
-
-	if (lastdec >= now)
-		timestamp += lastdec - now;
-	else
-		timestamp += lastdec + count_value - now;
-
-	lastdec = now;
-
-	return timestamp;
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
-	return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-unsigned long get_tbclk(void)
-{
-	return CONFIG_SYS_HZ;
-}
...	...	@@ -253,6 +253,13 @@
253	253	LIBS += $(CPUDIR)/omap-common/libomap-common.a
254	254	endif
255	255
	256	+ifeq ($(SOC),s5pc1xx)
	257	+LIBS += $(CPUDIR)/s5p-common/libs5p-common.a
	258	+endif
	259	+ifeq ($(SOC),s5pc2xx)
	260	+LIBS += $(CPUDIR)/s5p-common/libs5p-common.a
	261	+endif
	262	+
256	263	LIBS := $(addprefix $(obj),$(LIBS))
257	264	.PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)
258	265
	1	+#
	2	+# Copyright (C) 2009 Samsung Electronics
	3	+# Minkyu Kang <mk7.kang@samsung.com>
	4	+#
	5	+# See file CREDITS for list of people who contributed to this
	6	+# project.
	7	+#
	8	+# This program is free software; you can redistribute it and/or
	9	+# modify it under the terms of the GNU General Public License as
	10	+# published by the Free Software Foundation; either version 2 of
	11	+# the License, or (at your option) any later version.
	12	+#
	13	+# This program is distributed in the hope that it will be useful,
	14	+# but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	+# GNU General Public License for more details.
	17	+#
	18	+# You should have received a copy of the GNU General Public License
	19	+# along with this program; if not, write to the Free Software
	20	+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	+# MA 02111-1307 USA
	22	+#
	23	+
	24	+include $(TOPDIR)/config.mk
	25	+
	26	+LIB = $(obj)libs5p-common.a
	27	+
	28	+COBJS-y += cpu_info.o
	29	+COBJS-y += timer.o
	30	+
	31	+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
	32	+OBJS := $(addprefix $(obj),$(COBJS-y) $(SOBJS))
	33	+
	34	+all: $(obj).depend $(LIB)
	35	+
	36	+$(LIB): $(OBJS)
	37	+ $(AR) $(ARFLAGS) $@ $(OBJS)
	38	+
	39	+#########################################################################
	40	+
	41	+# defines $(obj).depend target
	42	+include $(SRCTREE)/rules.mk
	43	+
	44	+sinclude $(obj).depend
	45	+
	46	+#########################################################################
	1	+/*
	2	+ * Copyright (C) 2009 Samsung Electronics
	3	+ * Minkyu Kang <mk7.kang@samsung.com>
	4	+ *
	5	+ * See file CREDITS for list of people who contributed to this
	6	+ * project.
	7	+ *
	8	+ * This program is free software; you can redistribute it and/or
	9	+ * modify it under the terms of the GNU General Public License as
	10	+ * published by the Free Software Foundation; either version 2 of
	11	+ * the License, or (at your option) any later version.
	12	+ *
	13	+ * This program is distributed in the hope that it will be useful,
	14	+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	+ * GNU General Public License for more details.
	17	+ *
	18	+ * You should have received a copy of the GNU General Public License
	19	+ * along with this program; if not, write to the Free Software
	20	+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	+ * MA 02111-1307 USA
	22	+ */
	23	+#include <common.h>
	24	+#include <asm/io.h>
	25	+#include <asm/arch/clk.h>
	26	+
	27	+/* Default is s5pc100 */
	28	+unsigned int s5pc1xx_cpu_id = 0xC100;
	29	+
	30	+#ifdef CONFIG_ARCH_CPU_INIT
	31	+int arch_cpu_init(void)
	32	+{
	33	+ s5pc1xx_cpu_id = readl(samsung_get_base_pro_id());
	34	+ s5pc1xx_cpu_id = 0xC000 \| ((s5pc1xx_cpu_id & 0x00FFF000) >> 12);
	35	+
	36	+ s5pc1xx_clock_init();
	37	+
	38	+ return 0;
	39	+}
	40	+#endif
	41	+
	42	+u32 get_device_type(void)
	43	+{
	44	+ return s5pc1xx_cpu_id;
	45	+}
	46	+
	47	+#ifdef CONFIG_DISPLAY_CPUINFO
	48	+int print_cpuinfo(void)
	49	+{
	50	+ char buf[32];
	51	+
	52	+ printf("CPU:\tS5P%X@%sMHz\n",
	53	+ s5pc1xx_cpu_id, strmhz(buf, get_arm_clk()));
	54	+
	55	+ return 0;
	56	+}
	57	+#endif
	1	+/*
	2	+ * Copyright (C) 2009 Samsung Electronics
	3	+ * Heungjun Kim <riverful.kim@samsung.com>
	4	+ * Inki Dae <inki.dae@samsung.com>
	5	+ * Minkyu Kang <mk7.kang@samsung.com>
	6	+ *
	7	+ * See file CREDITS for list of people who contributed to this
	8	+ * project.
	9	+ *
	10	+ * This program is free software; you can redistribute it and/or
	11	+ * modify it under the terms of the GNU General Public License as
	12	+ * published by the Free Software Foundation; either version 2 of
	13	+ * the License, or (at your option) any later version.
	14	+ *
	15	+ * This program is distributed in the hope that it will be useful,
	16	+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	+ * GNU General Public License for more details.
	19	+ *
	20	+ * You should have received a copy of the GNU General Public License
	21	+ * along with this program; if not, write to the Free Software
	22	+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	+ * MA 02111-1307 USA
	24	+ */
	25	+
	26	+#include <common.h>
	27	+#include <asm/io.h>
	28	+#include <asm/arch/pwm.h>
	29	+#include <asm/arch/clk.h>
	30	+
	31	+#define PRESCALER_1 (16 - 1) /* prescaler of timer 2, 3, 4 */
	32	+#define MUX_DIV_2 1 /* 1/2 period */
	33	+#define MUX_DIV_4 2 /* 1/4 period */
	34	+#define MUX_DIV_8 3 /* 1/8 period */
	35	+#define MUX_DIV_16 4 /* 1/16 period */
	36	+#define MUX4_DIV_SHIFT 16
	37	+
	38	+#define TCON_TIMER4_SHIFT 20
	39	+
	40	+static unsigned long count_value;
	41	+
	42	+/* Internal tick units */
	43	+static unsigned long long timestamp; /* Monotonic incrementing timer */
	44	+static unsigned long lastdec; /* Last decremneter snapshot */
	45	+
	46	+/* macro to read the 16 bit timer */
	47	+static inline struct s5pc1xx_timer *s5pc1xx_get_base_timer(void)
	48	+{
	49	+ return (struct s5pc1xx_timer *)samsung_get_base_timer();
	50	+}
	51	+
	52	+int timer_init(void)
	53	+{
	54	+ struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
	55	+ u32 val;
	56	+
	57	+ /*
	58	+ * @ PWM Timer 4
	59	+ * Timer Freq(HZ) =
	60	+ * PCLK / { (prescaler_value + 1) * (divider_value) }
	61	+ */
	62	+
	63	+ /* set prescaler : 16 */
	64	+ /* set divider : 2 */
	65	+ writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
	66	+ writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
	67	+
	68	+ if (count_value == 0) {
	69	+ /* reset initial value */
	70	+ /* count_value = 2085937.5(HZ) (per 1 sec)*/
	71	+ count_value = get_pclk() / ((PRESCALER_1 + 1) *
	72	+ (MUX_DIV_2 + 1));
	73	+
	74	+ /* count_value / 100 = 20859.375(HZ) (per 10 msec) */
	75	+ count_value = count_value / 100;
	76	+ }
	77	+
	78	+ /* set count value */
	79	+ writel(count_value, &timer->tcntb4);
	80	+ lastdec = count_value;
	81	+
	82	+ val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) \|
	83	+ S5PC1XX_TCON4_AUTO_RELOAD;
	84	+
	85	+ /* auto reload & manual update */
	86	+ writel(val \| S5PC1XX_TCON4_UPDATE, &timer->tcon);
	87	+
	88	+ /* start PWM timer 4 */
	89	+ writel(val \| S5PC1XX_TCON4_START, &timer->tcon);
	90	+
	91	+ timestamp = 0;
	92	+
	93	+ return 0;
	94	+}
	95	+
	96	+/*
	97	+ * timer without interrupts
	98	+ */
	99	+void reset_timer(void)
	100	+{
	101	+ reset_timer_masked();
	102	+}
	103	+
	104	+unsigned long get_timer(unsigned long base)
	105	+{
	106	+ return get_timer_masked() - base;
	107	+}
	108	+
	109	+void set_timer(unsigned long t)
	110	+{
	111	+ timestamp = t;
	112	+}
	113	+
	114	+/* delay x useconds */
	115	+void __udelay(unsigned long usec)
	116	+{
	117	+ unsigned long tmo, tmp;
	118	+
	119	+ if (usec >= 1000) {
	120	+ /*
	121	+ * if "big" number, spread normalization
	122	+ * to seconds
	123	+ * 1. start to normalize for usec to ticks per sec
	124	+ * 2. find number of "ticks" to wait to achieve target
	125	+ * 3. finish normalize.
	126	+ */
	127	+ tmo = usec / 1000;
	128	+ tmo = (CONFIG_SYS_HZ count_value / 10);
	129	+ tmo /= 1000;
	130	+ } else {
	131	+ /* else small number, don't kill it prior to HZ multiply */
	132	+ tmo = usec * CONFIG_SYS_HZ * count_value / 10;
	133	+ tmo /= (1000 * 1000);
	134	+ }
	135	+
	136	+ /* get current timestamp */
	137	+ tmp = get_timer(0);
	138	+
	139	+ /* if setting this fordward will roll time stamp */
	140	+ /* reset "advancing" timestamp to 0, set lastdec value */
	141	+ /* else, set advancing stamp wake up time */
	142	+ if ((tmo + tmp + 1) < tmp)
	143	+ reset_timer_masked();
	144	+ else
	145	+ tmo += tmp;
	146	+
	147	+ /* loop till event */
	148	+ while (get_timer_masked() < tmo)
	149	+ ; /* nop */
	150	+}
	151	+
	152	+void reset_timer_masked(void)
	153	+{
	154	+ struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
	155	+
	156	+ /* reset time */
	157	+ lastdec = readl(&timer->tcnto4);
	158	+ timestamp = 0;
	159	+}
	160	+
	161	+unsigned long get_timer_masked(void)
	162	+{
	163	+ struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
	164	+ unsigned long now = readl(&timer->tcnto4);
	165	+
	166	+ if (lastdec >= now)
	167	+ timestamp += lastdec - now;
	168	+ else
	169	+ timestamp += lastdec + count_value - now;
	170	+
	171	+ lastdec = now;
	172	+
	173	+ return timestamp;
	174	+}
	175	+
	176	+/*
	177	+ * This function is derived from PowerPC code (read timebase as long long).
	178	+ * On ARM it just returns the timer value.
	179	+ */
	180	+unsigned long long get_ticks(void)
	181	+{
	182	+ return get_timer(0);
	183	+}
	184	+
	185	+/*
	186	+ * This function is derived from PowerPC code (timebase clock frequency).
	187	+ * On ARM it returns the number of timer ticks per second.
	188	+ */
	189	+unsigned long get_tbclk(void)
	190	+{
	191	+ return CONFIG_SYS_HZ;
	192	+}
...	...	@@ -32,9 +32,7 @@
32	32	SOBJS += reset.o
33	33
34	34	COBJS += clock.o
35		-COBJS += cpu_info.o
36	35	COBJS += sromc.o
37		-COBJS += timer.o
38	36
39	37	SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
40	38	OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS))
1		-/*
2		- * Copyright (C) 2009 Samsung Electronics
3		- * Minkyu Kang <mk7.kang@samsung.com>
4		- *
5		- * See file CREDITS for list of people who contributed to this
6		- * project.
7		- *
8		- * This program is free software; you can redistribute it and/or
9		- * modify it under the terms of the GNU General Public License as
10		- * published by the Free Software Foundation; either version 2 of
11		- * the License, or (at your option) any later version.
12		- *
13		- * This program is distributed in the hope that it will be useful,
14		- * but WITHOUT ANY WARRANTY; without even the implied warranty of
15		- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		- * GNU General Public License for more details.
17		- *
18		- * You should have received a copy of the GNU General Public License
19		- * along with this program; if not, write to the Free Software
20		- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21		- * MA 02111-1307 USA
22		- */
23		-#include <common.h>
24		-#include <asm/io.h>
25		-#include <asm/arch/clk.h>
26		-
27		-/* Default is s5pc100 */
28		-unsigned int s5pc1xx_cpu_id = 0xC100;
29		-
30		-#ifdef CONFIG_ARCH_CPU_INIT
31		-int arch_cpu_init(void)
32		-{
33		- s5pc1xx_cpu_id = readl(samsung_get_base_pro_id());
34		- s5pc1xx_cpu_id = 0xC000 \| ((s5pc1xx_cpu_id & 0x00FFF000) >> 12);
35		-
36		- s5pc1xx_clock_init();
37		-
38		- return 0;
39		-}
40		-#endif
41		-
42		-u32 get_device_type(void)
43		-{
44		- return s5pc1xx_cpu_id;
45		-}
46		-
47		-#ifdef CONFIG_DISPLAY_CPUINFO
48		-int print_cpuinfo(void)
49		-{
50		- char buf[32];
51		-
52		- printf("CPU:\tS5P%X@%sMHz\n",
53		- s5pc1xx_cpu_id, strmhz(buf, get_arm_clk()));
54		-
55		- return 0;
56		-}
57		-#endif
1		-/*
2		- * Copyright (C) 2009 Samsung Electronics
3		- * Heungjun Kim <riverful.kim@samsung.com>
4		- * Inki Dae <inki.dae@samsung.com>
5		- * Minkyu Kang <mk7.kang@samsung.com>
6		- *
7		- * See file CREDITS for list of people who contributed to this
8		- * project.
9		- *
10		- * This program is free software; you can redistribute it and/or
11		- * modify it under the terms of the GNU General Public License as
12		- * published by the Free Software Foundation; either version 2 of
13		- * the License, or (at your option) any later version.
14		- *
15		- * This program is distributed in the hope that it will be useful,
16		- * but WITHOUT ANY WARRANTY; without even the implied warranty of
17		- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18		- * GNU General Public License for more details.
19		- *
20		- * You should have received a copy of the GNU General Public License
21		- * along with this program; if not, write to the Free Software
22		- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23		- * MA 02111-1307 USA
24		- */
25		-
26		-#include <common.h>
27		-#include <asm/io.h>
28		-#include <asm/arch/pwm.h>
29		-#include <asm/arch/clk.h>
30		-
31		-#define PRESCALER_1 (16 - 1) /* prescaler of timer 2, 3, 4 */
32		-#define MUX_DIV_2 1 /* 1/2 period */
33		-#define MUX_DIV_4 2 /* 1/4 period */
34		-#define MUX_DIV_8 3 /* 1/8 period */
35		-#define MUX_DIV_16 4 /* 1/16 period */
36		-#define MUX4_DIV_SHIFT 16
37		-
38		-#define TCON_TIMER4_SHIFT 20
39		-
40		-static unsigned long count_value;
41		-
42		-/* Internal tick units */
43		-static unsigned long long timestamp; /* Monotonic incrementing timer */
44		-static unsigned long lastdec; /* Last decremneter snapshot */
45		-
46		-/* macro to read the 16 bit timer */
47		-static inline struct s5pc1xx_timer *s5pc1xx_get_base_timer(void)
48		-{
49		- return (struct s5pc1xx_timer *)samsung_get_base_timer();
50		-}
51		-
52		-int timer_init(void)
53		-{
54		- struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
55		- u32 val;
56		-
57		- /*
58		- * @ PWM Timer 4
59		- * Timer Freq(HZ) =
60		- * PCLK / { (prescaler_value + 1) * (divider_value) }
61		- */
62		-
63		- /* set prescaler : 16 */
64		- /* set divider : 2 */
65		- writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
66		- writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
67		-
68		- if (count_value == 0) {
69		- /* reset initial value */
70		- /* count_value = 2085937.5(HZ) (per 1 sec)*/
71		- count_value = get_pclk() / ((PRESCALER_1 + 1) *
72		- (MUX_DIV_2 + 1));
73		-
74		- /* count_value / 100 = 20859.375(HZ) (per 10 msec) */
75		- count_value = count_value / 100;
76		- }
77		-
78		- /* set count value */
79		- writel(count_value, &timer->tcntb4);
80		- lastdec = count_value;
81		-
82		- val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) \|
83		- S5PC1XX_TCON4_AUTO_RELOAD;
84		-
85		- /* auto reload & manual update */
86		- writel(val \| S5PC1XX_TCON4_UPDATE, &timer->tcon);
87		-
88		- /* start PWM timer 4 */
89		- writel(val \| S5PC1XX_TCON4_START, &timer->tcon);
90		-
91		- timestamp = 0;
92		-
93		- return 0;
94		-}
95		-
96		-/*
97		- * timer without interrupts
98		- */
99		-void reset_timer(void)
100		-{
101		- reset_timer_masked();
102		-}
103		-
104		-unsigned long get_timer(unsigned long base)
105		-{
106		- return get_timer_masked() - base;
107		-}
108		-
109		-void set_timer(unsigned long t)
110		-{
111		- timestamp = t;
112		-}
113		-
114		-/* delay x useconds */
115		-void __udelay(unsigned long usec)
116		-{
117		- unsigned long tmo, tmp;
118		-
119		- if (usec >= 1000) {
120		- /*
121		- * if "big" number, spread normalization
122		- * to seconds
123		- * 1. start to normalize for usec to ticks per sec
124		- * 2. find number of "ticks" to wait to achieve target
125		- * 3. finish normalize.
126		- */
127		- tmo = usec / 1000;
128		- tmo = (CONFIG_SYS_HZ count_value / 10);
129		- tmo /= 1000;
130		- } else {
131		- /* else small number, don't kill it prior to HZ multiply */
132		- tmo = usec * CONFIG_SYS_HZ * count_value / 10;
133		- tmo /= (1000 * 1000);
134		- }
135		-
136		- /* get current timestamp */
137		- tmp = get_timer(0);
138		-
139		- /* if setting this fordward will roll time stamp */
140		- /* reset "advancing" timestamp to 0, set lastdec value */
141		- /* else, set advancing stamp wake up time */
142		- if ((tmo + tmp + 1) < tmp)
143		- reset_timer_masked();
144		- else
145		- tmo += tmp;
146		-
147		- /* loop till event */
148		- while (get_timer_masked() < tmo)
149		- ; /* nop */
150		-}
151		-
152		-void reset_timer_masked(void)
153		-{
154		- struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
155		-
156		- /* reset time */
157		- lastdec = readl(&timer->tcnto4);
158		- timestamp = 0;
159		-}
160		-
161		-unsigned long get_timer_masked(void)
162		-{
163		- struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
164		- unsigned long now = readl(&timer->tcnto4);
165		-
166		- if (lastdec >= now)
167		- timestamp += lastdec - now;
168		- else
169		- timestamp += lastdec + count_value - now;
170		-
171		- lastdec = now;
172		-
173		- return timestamp;
174		-}
175		-
176		-/*
177		- * This function is derived from PowerPC code (read timebase as long long).
178		- * On ARM it just returns the timer value.
179		- */
180		-unsigned long long get_ticks(void)
181		-{
182		- return get_timer(0);
183		-}
184		-
185		-/*
186		- * This function is derived from PowerPC code (timebase clock frequency).
187		- * On ARM it returns the number of timer ticks per second.
188		- */
189		-unsigned long get_tbclk(void)
190		-{
191		- return CONFIG_SYS_HZ;
192		-}