arm: rmobile: Add SILK board support

SILK is an entry level development board based on R-Car E2 SoC (R8A7794)

This commit supports the following peripherals:
- SCIF, I2C, Ethernet, QSPI, MMC, USB Host

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Reviewed-by: Tom Rini <trini@ti.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

1 files changed, 175 insertions, 0 deletions

diff --git a/board/renesas/silk/silk.c b/board/renesas/silk/silk.c
new file mode 100644
index 0000000000..8818211d32
--- /dev/null
+++ b/board/renesas/silk/silk.c
@@ -0,0 +1,175 @@
+/*
+ * board/renesas/silk/silk.c
+ *
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Cogent Embedded, Inc.
+ *
+ * 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 <asm/arch/rcar-mstp.h>
+#include <asm/arch/mmc.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();
+
+#ifndef CONFIG_DCACHE_OFF
+	/*
+	 * The caches are disabled when ACTLR.SMP is set to 0
+	 * regardless of the value of the SCTLR.C (cache enable bit)
+	 * on Cortex-A7 MPCore
+	 */
+	asm volatile(
+		"mrc	15, 0, r0, c1, c0, 1\n"		/* read ACTLR */
+		"orr	r0, r0, #(1 << 6)\n"		/* set ACTLR.SMP bit */
+		"mcr	p15, 0, r0, c1, c0, 1\n");	/* write ACTLR */
+#endif
+}
+
+#define TMU0_MSTP125	(1 << 25)
+#define SCIF2_MSTP719	(1 << 19)
+#define ETHER_MSTP813	(1 << 13)
+#define IIC1_MSTP323	(1 << 23)
+#define MMC0_MSTP315	(1 << 15)
+
+int board_early_init_f(void)
+{
+	/* TMU */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+
+	/* SCIF2 */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF2_MSTP719);
+
+	/* ETHER */
+	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
+
+	/* IIC1 / sh-i2c ch1 */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, IIC1_MSTP323);
+
+#ifdef CONFIG_SH_MMCIF
+	/* MMC */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, MMC0_MSTP315);
+#endif
+	return 0;
+}
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_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 board_mmc_init(bd_t *bis)
+{
+	int ret = 0;
+
+#ifdef CONFIG_SH_MMCIF
+	/* MMC0 */
+	gpio_request(GPIO_GP_4_31, NULL);
+	gpio_set_value(GPIO_GP_4_31, 1);
+
+	ret = mmcif_mmc_init();
+#endif
+	return ret;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+const struct rmobile_sysinfo sysinfo = {
+	CONFIG_RMOBILE_BOARD_STRING
+};
+
+void reset_cpu(ulong addr)
+{
+	u8 val;
+
+	i2c_set_bus_num(1); /* PowerIC connected to ch1 */
+	i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+	val |= 0x02;
+	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+}