arm: rmobile: Add support Alt board

The alt board has R8A7794, 1GB DDR3-SDRAM, USB, Ethernet, QSPI,
MMC, SDHI and more.

This commit supports the following functions:
 - DDR3-SDRAM
 - SCIF
 - I2C
 - Ethernet
 - QSPI

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

1 files changed, 173 insertions, 0 deletions

diff --git a/board/renesas/alt/alt.c b/board/renesas/alt/alt.c
new file mode 100644
index 0000000..9d8e8f9
--- /dev/null
+++ b/board/renesas/alt/alt.c
@@ -0,0 +1,173 @@
+/*
+ * board/renesas/alt/alt.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 <netdev.h>
+#include <miiphy.h>
+#include <i2c.h>
+#include <div64.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;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	/* QoS */
+	qos_init();
+}
+
+#define MSTPSR1		0xE6150038
+#define SMSTPCR1	0xE6150134
+#define TMU0_MSTP125	(1 << 25)
+
+#define MSTPSR7		0xE61501C4
+#define SMSTPCR7	0xE615014C
+#define SCIF0_MSTP719	(1 << 19)
+
+#define MSTPSR8		0xE61509A0
+#define SMSTPCR8	0xE6150990
+#define ETHER_MSTP813	(1 << 13)
+
+#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)
+{
+	/* TMU */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+
+	/* SCIF0 */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP719);
+
+	/* ETHER */
+	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
+
+	return 0;
+}
+
+void arch_preboot_os(void)
+{
+	/* Disable TMU0 */
+	mstp_setbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+}
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = ALT_SDRAM_BASE + 0x100;
+
+	/* Init PFC controller */
+	r8a7794_pinmux_init();
+
+	/* Ether Enable */
+	gpio_request(GPIO_FN_ETH_CRS_DV, NULL);
+	gpio_request(GPIO_FN_ETH_RX_ER, NULL);
+	gpio_request(GPIO_FN_ETH_RXD0, NULL);
+	gpio_request(GPIO_FN_ETH_RXD1, NULL);
+	gpio_request(GPIO_FN_ETH_LINK, NULL);
+	gpio_request(GPIO_FN_ETH_REFCLK, NULL);
+	gpio_request(GPIO_FN_ETH_MDIO, NULL);
+	gpio_request(GPIO_FN_ETH_TXD1, NULL);
+	gpio_request(GPIO_FN_ETH_TX_EN, NULL);
+	gpio_request(GPIO_FN_ETH_MAGIC, NULL);
+	gpio_request(GPIO_FN_ETH_TXD0, NULL);
+	gpio_request(GPIO_FN_ETH_MDC, NULL);
+	gpio_request(GPIO_FN_IRQ8, NULL);
+
+	/* PHY reset */
+	gpio_request(GPIO_GP_1_24, NULL);
+	gpio_direction_output(GPIO_GP_1_24, 0);
+	mdelay(20);
+	gpio_set_value(GPIO_GP_1_24, 1);
+	udelay(1);
+
+	return 0;
+}
+
+#define CXR24 0xEE7003C0 /* MAC address high register */
+#define CXR25 0xEE7003C8 /* MAC address low register */
+int board_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_SH_ETHER
+	int ret = -ENODEV;
+	u32 val;
+	unsigned char enetaddr[6];
+
+	ret = sh_eth_initialize(bis);
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr))
+		return ret;
+
+	/* Set Mac address */
+	val = enetaddr[0] << 24 | enetaddr[1] << 16 |
+		enetaddr[2] << 8 | enetaddr[3];
+	writel(val, CXR24);
+
+	val = enetaddr[4] << 8 | enetaddr[5];
+	writel(val, CXR25);
+
+	return ret;
+#else
+	return 0;
+#endif
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	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 = ALT_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = ALT_SDRAM_SIZE;
+}
+
+int board_late_init(void)
+{
+	return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+	u8 val;
+
+	i2c_set_bus_num(1); /* PowerIC connected to ch3 */
+	i2c_init(400000, 0);
+	i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+	val |= 0x02;
+	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+}