ARM: rmobile: Add R8A77995 D3 Draak board

Add bits to support yet another board, the R8A77995 D3 Draak.
The DT file is from Linux 4.15-rc1 , commit
b35334447513c14a4dd55a67c269a743d4a4824b .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

4 files changed, 163 insertions, 0 deletions

diff --git a/board/renesas/draak/Kconfig b/board/renesas/draak/Kconfig
new file mode 100644
index 0000000000..9106387bb9
--- /dev/null
+++ b/board/renesas/draak/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_DRAAK
+
+config SYS_SOC
+	default "rmobile"
+
+config SYS_BOARD
+	default "draak"
+
+config SYS_VENDOR
+	default "renesas"
+
+config SYS_CONFIG_NAME
+	default "draak"
+
+endif
diff --git a/board/renesas/draak/MAINTAINERS b/board/renesas/draak/MAINTAINERS
new file mode 100644
index 0000000000..1dbcc2811c
--- /dev/null
+++ b/board/renesas/draak/MAINTAINERS
@@ -0,0 +1,6 @@
+DRAAK BOARD
+M:	Marek Vasut <marek.vasut+renesas@gmail.com>
+S:	Maintained
+F:	board/renesas/draak/
+F:	include/configs/draak.h
+F:	configs/r8a77995_draak_defconfig
diff --git a/board/renesas/draak/Makefile b/board/renesas/draak/Makefile
new file mode 100644
index 0000000000..604522ebb1
--- /dev/null
+++ b/board/renesas/draak/Makefile
@@ -0,0 +1,9 @@
+#
+# board/renesas/draak/Makefile
+#
+# Copyright (C) 2015 Renesas Electronics Corporation
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y	:= draak.o
diff --git a/board/renesas/draak/draak.c b/board/renesas/draak/draak.c
new file mode 100644
index 0000000000..acdaaff72a
--- /dev/null
+++ b/board/renesas/draak/draak.c
@@ -0,0 +1,133 @@
+/*
+ * board/renesas/draak/draak.c
+ *     This file is Draak board support.
+ *
+ * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <netdev.h>
+#include <dm.h>
+#include <dm/platform_data/serial_sh.h>
+#include <asm/processor.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/rmobile.h>
+#include <asm/arch/rcar-mstp.h>
+#include <asm/arch/sh_sdhi.h>
+#include <i2c.h>
+#include <mmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CPGWPCR	0xE6150904
+#define CPGWPR  0xE615090C
+
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
+void s_init(void)
+{
+	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
+	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	writel(0xA5A50000, CPGWPCR);
+	writel(0xFFFFFFFF, CPGWPR);
+}
+
+#define GSX_MSTP112		BIT(12)	/* 3DG */
+#define TMU0_MSTP125		BIT(25)	/* secure */
+#define TMU1_MSTP124		BIT(24)	/* non-secure */
+#define SCIF2_MSTP310		BIT(10)	/* SCIF2 */
+#define DVFS_MSTP926		BIT(26)
+#define HSUSB_MSTP704		BIT(4)	/* HSUSB */
+
+int board_early_init_f(void)
+{
+	/* TMU0,1 */		/* which use ? */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125 | TMU1_MSTP124);
+
+#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
+	/* DVFS for reset */
+	mstp_clrbits_le32(MSTPSR9, SMSTPCR9, DVFS_MSTP926);
+#endif
+	return 0;
+}
+
+/* SYSC */
+/* R/- 32 Power status register 2(3DG) */
+#define	SYSC_PWRSR2	0xE6180100
+/* -/W 32 Power resume control register 2 (3DG) */
+#define	SYSC_PWRONCR2	0xE618010C
+
+/* HSUSB block registers */
+#define HSUSB_REG_LPSTS			0xE6590102
+#define HSUSB_REG_LPSTS_SUSPM_NORMAL	BIT(14)
+#define HSUSB_REG_UGCTRL2		0xE6590184
+#define HSUSB_REG_UGCTRL2_USB0SEL	0x30
+#define HSUSB_REG_UGCTRL2_USB0SEL_EHCI	0x10
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
+
+	/* USB1 pull-up */
+	setbits_le32(PFC_PUEN6, PUEN_USB1_OVC | PUEN_USB1_PWEN);
+
+	/* Configure the HSUSB block */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, HSUSB_MSTP704);
+	/* Choice USB0SEL */
+	clrsetbits_le32(HSUSB_REG_UGCTRL2, HSUSB_REG_UGCTRL2_USB0SEL,
+			HSUSB_REG_UGCTRL2_USB0SEL_EHCI);
+	/* low power status */
+	setbits_le16(HSUSB_REG_LPSTS, HSUSB_REG_LPSTS_SUSPM_NORMAL);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_memory_size() != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+#define RST_BASE	0xE6160000
+#define RST_CA57RESCNT	(RST_BASE + 0x40)
+#define RST_CA53RESCNT	(RST_BASE + 0x44)
+#define RST_RSTOUTCR	(RST_BASE + 0x58)
+#define RST_CA57_CODE	0xA5A5000F
+#define RST_CA53_CODE	0x5A5A000F
+
+void reset_cpu(ulong addr)
+{
+	unsigned long midr, cputype;
+
+	asm volatile("mrs %0, midr_el1" : "=r" (midr));
+	cputype = (midr >> 4) & 0xfff;
+
+	if (cputype == 0xd03)
+		writel(RST_CA53_CODE, RST_CA53RESCNT);
+	else if (cputype == 0xd07)
+		writel(RST_CA57_CODE, RST_CA57RESCNT);
+	else
+		hang();
+}