New subject: [U-Boot] [PATCH 2/5] arm: rmobile: Add support Renesas SH73A0

5 Jul 2012

This patch adds minimum support for R-Mobile. Only minimal support with timer.
This CPU can uses the peripheral of Renesas SuperH.
Signed-off-by: Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com
---
 arch/arm/cpu/armv7/rmobile/Makefile         |   48 +++++++++++++
 arch/arm/cpu/armv7/rmobile/cpu_info.c       |   74 ++++++++++++++++++++
 arch/arm/cpu/armv7/rmobile/timer.c          |   97 +++++++++++++++++++++++++++
 arch/arm/include/asm/arch-rmobile/rmobile.h |    8 +++
 4 files changed, 227 insertions(+)
 create mode 100644 arch/arm/cpu/armv7/rmobile/Makefile
 create mode 100644 arch/arm/cpu/armv7/rmobile/cpu_info.c
 create mode 100644 arch/arm/cpu/armv7/rmobile/timer.c
 create mode 100644 arch/arm/include/asm/arch-rmobile/rmobile.h

diff --git a/arch/arm/cpu/armv7/rmobile/Makefile b/arch/arm/cpu/armv7/rmobile/Makefile
new file mode 100644
index 0000000..e7eb90f
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/Makefile
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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	= $(obj)lib$(SOC).o
+
+COBJS += cpu_info.o
+COBJS += timer.o
+
+SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS) $(COBJS-y))
+START	:= $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
+
diff --git a/arch/arm/cpu/armv7/rmobile/cpu_info.c b/arch/arm/cpu/armv7/rmobile/cpu_info.c
new file mode 100644
index 0000000..789c2c3
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/cpu_info.c
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2012 Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com
+ * (C) Copyright 2012 Renesas Solutions Corp.
+ *
+ * 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/rmobile.h>
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+	icache_enable();
+	return 0;
+}
+#endif
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+	dcache_enable();
+}
+#endif
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+static u32 get_cpu_type(void)
+{
+	u32 id;
+	u32 type;
+
+	id = readl(CCCR);
+	type = (id >> 8) & 0xFF;
+
+	return type;
+}
+
+static u32 get_cpu_rev(void)
+{
+	u32 id;
+	u32 rev;
+
+	id = readl(CCCR);
+	rev = (id >> 4) & 0xF;
+
+	return rev;
+}
+
+int print_cpuinfo(void)
+{
+	switch (get_cpu_type()) {
+	default:
+		printf("CPU: Renesas Electronics CPU rev %d\n", get_cpu_rev());
+		break;
+	}
+	return 0;
+}
+#endif
diff --git a/arch/arm/cpu/armv7/rmobile/timer.c b/arch/arm/cpu/armv7/rmobile/timer.c
new file mode 100644
index 0000000..1818739
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/timer.c
@@ -0,0 +1,97 @@
+/*
+ * (C) Copyright 2012 Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com
+ * (C) Copyright 2012 Renesas Solutions Corp.
+ *
+ * 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-armv7/globaltimer.h>
+#include <asm/arch/rmobile.h>
+
+static struct globaltimer *global_timer = \
+		(struct globaltimer *)GLOBAL_TIMER_BASE_ADDR;
+
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
+static u64 get_cpu_global_timer(void)
+{
+	u32 low, high;
+	u64 timer;
+
+	u32 old = readl(&global_timer->cnt_h);
+	while (1) {
+		low = readl(&global_timer->cnt_l);
+		high = readl(&global_timer->cnt_h);
+		if (old == high)
+			break;
+		else
+			old = high;
+	}
+
+	timer = high;
+	return (u64)((timer << 32) | low);
+}
+
+static u64 get_time_us(void)
+{
+	u64 timer = get_cpu_global_timer();
+
+	timer = ((timer << 2) + (CLK2MHZ(CONFIG_SYS_CPU_CLK) >> 1));
+	timer /= (u64)CLK2MHZ(CONFIG_SYS_CPU_CLK);
+	return timer;
+}
+
+static ulong get_time_ms(void)
+{
+	return (ulong)(get_time_us() / 1000);
+}
+
+int timer_init(void)
+{
+	writel(0x01, &global_timer->ctl);
+	return 0;
+}
+
+void __udelay(unsigned long usec)
+{
+	u64 start, current;
+	u64 wait;
+
+	start = get_cpu_global_timer() ;
+	wait = (u64)((usec * CLK2MHZ(CONFIG_SYS_CPU_CLK)) >> 2) ;
+	do {
+		current = get_cpu_global_timer();
+	} while ((current - start) < wait);
+}
+
+ulong get_timer(ulong base)
+{
+	return get_time_ms() - base;
+}
+
+unsigned long long get_ticks(void)
+{
+	return get_cpu_global_timer();
+}
+
+ulong get_tbclk(void)
+{
+	return (ulong)(CONFIG_SYS_CPU_CLK >> 2);
+}
diff --git a/arch/arm/include/asm/arch-rmobile/rmobile.h b/arch/arm/include/asm/arch-rmobile/rmobile.h
new file mode 100644
index 0000000..bf5e22a
--- /dev/null
+++ b/arch/arm/include/asm/arch-rmobile/rmobile.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_ARCH_RMOBILE_H
+#define __ASM_ARCH_RMOBILE_H
+
+#if defined(CONFIG_RMOBILE)
+#error "SOC Name not defined"
+#endif /* CONFIG_RMOBILE */
+
+#endif /* __ASM_ARCH_RMOBILE_H */
-- 
1.7.10


    

[U-Boot] [PATCH v2 1/5] arm: rmobile: Add basic support for Renesas R-Mobile

Nobuhiro Iwamatsu

Nobuhiro Iwamatsu

Wolfgang Denk

Nobuhiro Iwamatsu

Nobuhiro Iwamatsu

Wolfgang Denk

Nobuhiro Iwamatsu

Nobuhiro Iwamatsu

Nobuhiro Iwamatsu

Tetsuyuki Kobayashi

Nobuhiro Iwamatsu

Tetsuyuki Kobayashi

Nobuhiro Iwamatsu

Wolfgang Denk

Nobuhiro Iwamatsu

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