arm: rmobile: Add support Renesas SH73A0

Renesas SH73A0 is CPU with Cortex-A9.
This supports the basic register definition and GPIO.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

5 files changed, 200 insertions, 24 deletions

diff --git a/arch/arm/cpu/armv7/rmobile/Makefile b/arch/arm/cpu/armv7/rmobile/Makefile
index e7eb90f..77eca4b 100644
--- a/arch/arm/cpu/armv7/rmobile/Makefile
+++ b/arch/arm/cpu/armv7/rmobile/Makefile
@@ -25,11 +25,17 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).o
 
-COBJS += cpu_info.o
-COBJS += timer.o
+SOBJS = lowlevel_init.o
+COBJS-y += cpu_info.o
+COBJS-y += timer.o
 
-SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS) $(COBJS-y))
+COBJS-$(CONFIG_DISPLAY_BOARDINFO) += board.o
+COBJS-$(CONFIG_SH73A0) += cpu_info-sh73a0.o
+
+COBJS	:= $(COBJS-y)
+SRCS    := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
 START	:= $(addprefix $(obj),$(START))
 
 all:	$(obj).depend $(LIB)
diff --git a/arch/arm/cpu/armv7/rmobile/board.c b/arch/arm/cpu/armv7/rmobile/board.c
new file mode 100644
index 0000000..2622590
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/board.c
@@ -0,0 +1,31 @@
+/*
+ * (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/sys_proto.h>
+
+int checkboard(void)
+{
+	printf("Board: %s\n", sysinfo.board_string);
+	return 0;
+}
diff --git a/arch/arm/cpu/armv7/rmobile/cpu_info-sh73a0.c b/arch/arm/cpu/armv7/rmobile/cpu_info-sh73a0.c
new file mode 100644
index 0000000..3086dd8
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/cpu_info-sh73a0.c
@@ -0,0 +1,48 @@
+/*
+ * (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>
+
+u32 rmobile_get_cpu_type(void)
+{
+	u32 id;
+	u32 type;
+	struct sh73a0_hpb *hpb = (struct sh73a0_hpb *)HPB_BASE;
+
+	id = readl(hpb->cccr);
+	type = (id >> 8) & 0xFF;
+
+	return type;
+}
+
+u32 get_cpu_rev(void)
+{
+	u32 id;
+	u32 rev;
+	struct sh73a0_hpb *hpb = (struct sh73a0_hpb *)HPB_BASE;
+
+	id = readl(hpb->cccr);
+	rev = (id >> 4) & 0xF;
+
+	return rev;
+}
diff --git a/arch/arm/cpu/armv7/rmobile/cpu_info.c b/arch/arm/cpu/armv7/rmobile/cpu_info.c
index 789c2c3..2148958 100644
--- a/arch/arm/cpu/armv7/rmobile/cpu_info.c
+++ b/arch/arm/cpu/armv7/rmobile/cpu_info.c
@@ -22,7 +22,6 @@
  */
 #include <common.h>
 #include <asm/io.h>
-#include <asm/arch/rmobile.h>
 
 #ifdef CONFIG_ARCH_CPU_INIT
 int arch_cpu_init(void)
@@ -40,35 +39,32 @@ void enable_caches(void)
 #endif
 
 #ifdef CONFIG_DISPLAY_CPUINFO
-static u32 get_cpu_type(void)
+static u32 __rmobile_get_cpu_type(void)
 {
-	u32 id;
-	u32 type;
-
-	id = readl(CCCR);
-	type = (id >> 8) & 0xFF;
-
-	return type;
+	return 0x0;
 }
+u32 rmobile_get_cpu_type(void)
+		__attribute__((weak, alias("__rmobile_get_cpu_type")));
 
-static u32 get_cpu_rev(void)
+static u32 __rmobile_get_cpu_rev(void)
 {
-	u32 id;
-	u32 rev;
-
-	id = readl(CCCR);
-	rev = (id >> 4) & 0xF;
-
-	return rev;
+	return 0;
 }
+u32 rmobile_get_cpu_rev(void)
+		__attribute__((weak, alias("__rmobile_get_cpu_rev")));
 
 int print_cpuinfo(void)
 {
-	switch (get_cpu_type()) {
+	switch (rmobile_get_cpu_type()) {
+	case 0x37:
+		printf("CPU: Renesas Electronics SH73A0 rev %d\n",
+				rmobile_get_cpu_rev());
+		break;
 	default:
-		printf("CPU: Renesas Electronics CPU rev %d\n", get_cpu_rev());
+		printf("CPU: Renesas Electronics CPU rev %d\n",
+				get_cpu_rev());
 		break;
 	}
 	return 0;
 }
-#endif
+#endif /* CONFIG_DISPLAY_CPUINFO */
diff --git a/arch/arm/cpu/armv7/rmobile/lowlevel_init.S b/arch/arm/cpu/armv7/rmobile/lowlevel_init.S
new file mode 100644
index 0000000..2cd410b
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/lowlevel_init.S
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
+ * Copyright (C) 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 <config.h>
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+	ldr		r0, =MERAM_BASE
+	mov		r1, #0x0
+	str		r1, [r0]
+
+	mrc		p15, 0, r0, c0, c0, 5
+	ands	r0, r0, #0xF
+	beq		lowlevel_init__
+	b		wait_interrupt
+
+	.pool
+	.align 4
+
+wait_interrupt:
+	ldr     r1, =ICCICR
+	mov     r2, #0x0
+	str     r2, [r1]
+	mov     r2, #0xF0
+	adds    r1, r1, #4 /* ICCPMR */
+	str     r2, [r1]
+	ldr     r1, =ICCICR
+	mov     r2, #0x1
+	str     r2, [r1]
+
+wait_loop:
+	wfi
+
+	ldr		r2, [r1, #0xC]
+	str		r2, [r1, #0x10]
+
+	ldr		r0, =MERAM_BASE
+	ldr		r2, [r0]
+	cmp		r2, #0
+	movne	pc, r2
+
+	b		wait_loop
+
+wait_loop_end:
+	.pool
+	.align 4
+
+lowlevel_init__:
+
+	mov r0, #0x200000
+
+loop0:
+	subs r0, r0, #1
+	bne  loop0
+
+	ldr sp, MERAM_STACK
+
+	str ip, [sp]    /* stash old link register */
+	mov ip, lr      /* save link reg across call */
+	bl  s_init
+
+	ldr ip, [sp]    /* restore save ip */
+	mov lr, ip      /* restore link reg */
+
+	/* back to arch calling code */
+	mov pc, lr
+
+	.pool
+	.align 4
+
+ENDPROC(lowlevel_init)
+	.ltorg
+
+MERAM_STACK:
+	.word LOW_LEVEL_MERAM_STACK