arm: rmobile: Add basic support for Renesas R-Mobile

[u-boot] / arch / arm / cpu / armv7 / rmobile / cpu_info.c

diff --git a/arch/arm/cpu/armv7/rmobile/cpu_info.c b/arch/arm/cpu/armv7/rmobile/cpu_info.c
new file mode 100644 (file)
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