arm: rmobile: Add support gose board

The gose board has R8A7793, 1GB DDR3-SDRAM, USB, Ethernet, and more.
This patch supports the following functions:
 - DDR3-SDRAM
 - SCIF
 - QSPI
 - SPI

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/gose/gose.c

@@ -0,0 +1,116 @@
+/*
+ * board/renesas/gose/gose.c
+ *
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <asm/processor.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/arch/rmobile.h>
+#include <i2c.h>
+#include "qos.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#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;
+	u32 stc;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	/* CPU frequency setting. Set to 1.5GHz */
+	stc = ((1500 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1) << PLL0_STC_BIT;
+	clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);
+
+	/* QoS */
+	qos_init();
+}
+
+#define MSTPSR1		0xE6150038
+#define SMSTPCR1	0xE6150134
+#define TMU0_MSTP125	(1 << 25)
+
+#define MSTPSR7		0xE61501C4
+#define SMSTPCR7	0xE615014C
+#define SCIF0_MSTP721	(1 << 21)
+
+#define mstp_setbits(type, addr, saddr, set) \
+	out_##type((saddr), in_##type(addr) | (set))
+#define mstp_clrbits(type, addr, saddr, clear) \
+	out_##type((saddr), in_##type(addr) & ~(clear))
+#define mstp_setbits_le32(addr, saddr, set) \
+	mstp_setbits(le32, addr, saddr, set)
+#define mstp_clrbits_le32(addr, saddr, clear) \
+	mstp_clrbits(le32, addr, saddr, clear)
+
+int board_early_init_f(void)
+{
+	/* TMU0 */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+
+	/* SCIF0 */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);
+
+	return 0;
+}
+
+#define TSTR0		0x04
+#define TSTR0_STR0	0x01
+void arch_preboot_os(void)
+{
+	/* stop TMU0 */
+	mstp_clrbits_le32(TMU_BASE + TSTR0, TMU_BASE + TSTR0, TSTR0_STR0);
+	/* Disable TMU0 */
+	mstp_setbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+}
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = GOSE_SDRAM_BASE + 0x100;
+
+	/* Init PFC controller */
+	r8a7793_pinmux_init();
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+const struct rmobile_sysinfo sysinfo = {
+	CONFIG_RMOBILE_BOARD_STRING
+};
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = GOSE_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = GOSE_SDRAM_SIZE;
+}
+
+void reset_cpu(ulong addr)
+{
+	u8 val;
+
+	i2c_set_bus_num(2); /* PowerIC connected to ch2 */
+	i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+	val |= 0x02;
+	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+}