[U-Boot] [PATCH 1/2] ARMV7: S5P: make s5p-common for sharing the code between s5pc1xx and s5pc2xx
Minkyu Kang
mk7.kang at samsung.com
Thu Aug 19 07:09:27 CEST 2010
This patch adds basic support for s5pc210.
s5p-common will be used by all of s5p SoCs.
Signed-off-by: Minkyu Kang <mk7.kang at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
Makefile | 7 +
arch/arm/cpu/armv7/s5p-common/Makefile | 46 +++++++
arch/arm/cpu/armv7/s5p-common/cpu_info.c | 57 +++++++++
arch/arm/cpu/armv7/s5p-common/timer.c | 192 ++++++++++++++++++++++++++++++
arch/arm/cpu/armv7/s5pc1xx/Makefile | 2 -
arch/arm/cpu/armv7/s5pc1xx/cpu_info.c | 57 ---------
arch/arm/cpu/armv7/s5pc1xx/timer.c | 192 ------------------------------
7 files changed, 302 insertions(+), 251 deletions(-)
create mode 100644 arch/arm/cpu/armv7/s5p-common/Makefile
create mode 100644 arch/arm/cpu/armv7/s5p-common/cpu_info.c
create mode 100644 arch/arm/cpu/armv7/s5p-common/timer.c
delete mode 100644 arch/arm/cpu/armv7/s5pc1xx/cpu_info.c
delete mode 100644 arch/arm/cpu/armv7/s5pc1xx/timer.c
diff --git a/Makefile b/Makefile
index 9cea069..47f4e7d 100644
--- a/Makefile
+++ b/Makefile
@@ -253,6 +253,13 @@ ifeq ($(SOC),omap4)
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)
diff --git a/arch/arm/cpu/armv7/s5p-common/Makefile b/arch/arm/cpu/armv7/s5p-common/Makefile
new file mode 100644
index 0000000..37371f6
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5p-common/Makefile
@@ -0,0 +1,46 @@
+#
+# Copyright (C) 2009 Samsung Electronics
+# Minkyu Kang <mk7.kang at 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
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/s5p-common/cpu_info.c b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
new file mode 100644
index 0000000..454175c
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang at 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
diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c
new file mode 100644
index 0000000..6487c0f
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5p-common/timer.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Heungjun Kim <riverful.kim at samsung.com>
+ * Inki Dae <inki.dae at samsung.com>
+ * Minkyu Kang <mk7.kang at 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;
+}
diff --git a/arch/arm/cpu/armv7/s5pc1xx/Makefile b/arch/arm/cpu/armv7/s5pc1xx/Makefile
index 3785593..263945f 100644
--- a/arch/arm/cpu/armv7/s5pc1xx/Makefile
+++ b/arch/arm/cpu/armv7/s5pc1xx/Makefile
@@ -32,9 +32,7 @@ SOBJS = cache.o
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))
diff --git a/arch/arm/cpu/armv7/s5pc1xx/cpu_info.c b/arch/arm/cpu/armv7/s5pc1xx/cpu_info.c
deleted file mode 100644
index 454175c..0000000
--- a/arch/arm/cpu/armv7/s5pc1xx/cpu_info.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2009 Samsung Electronics
- * Minkyu Kang <mk7.kang at 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
diff --git a/arch/arm/cpu/armv7/s5pc1xx/timer.c b/arch/arm/cpu/armv7/s5pc1xx/timer.c
deleted file mode 100644
index 6487c0f..0000000
--- a/arch/arm/cpu/armv7/s5pc1xx/timer.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (C) 2009 Samsung Electronics
- * Heungjun Kim <riverful.kim at samsung.com>
- * Inki Dae <inki.dae at samsung.com>
- * Minkyu Kang <mk7.kang at 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;
-}
--
1.7.0.4
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