arm: rmobile: Add Porter board support

Porter is an entry level development board based on R-Car M2 SoC (R8A7791)

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

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

arch/arm/cpu/armv7/rmobile/Kconfig

@@ -24,6 +24,9 @@ config TARGET_ALT
 config TARGET_SILK
 	bool "Silk board"
 
+config TARGET_PORTER
+	bool "Porter board"
+
 endchoice
 
 config SYS_SOC
@@ -31,7 +34,7 @@ config SYS_SOC
 
 config RMOBILE_EXTRAM_BOOT
 	bool "Enable boot from RAM"
-	depends on TARGET_ALT || TARGET_KOELSCH || TARGET_LAGER || TARGET_SILK
+	depends on TARGET_ALT || TARGET_KOELSCH || TARGET_LAGER || TARGET_PORTER || TARGET_SILK
 	default n
 
 source "board/atmark-techno/armadillo-800eva/Kconfig"
@@ -41,5 +44,6 @@ source "board/renesas/lager/Kconfig"
 source "board/kmc/kzm9g/Kconfig"
 source "board/renesas/alt/Kconfig"
 source "board/renesas/silk/Kconfig"
+source "board/renesas/porter/Kconfig"
 
 endif

board/renesas/porter/Kconfig

+if TARGET_PORTER
+
+config SYS_BOARD
+	default "porter"
+
+config SYS_VENDOR
+	default "renesas"
+
+config SYS_CONFIG_NAME
+	default "porter"
+
+endif

board/renesas/porter/MAINTAINERS

+PORTER BOARD
+M:	Cogent Embedded, Inc. <source@cogentembedded.com>
+S:	Maintained
+F:	board/renesas/porter/
+F:	include/configs/porter.h
+F:	configs/porter_defconfig

board/renesas/porter/Makefile

+#
+# board/renesas/porter/Makefile
+#
+# Copyright (C) 2015 Renesas Electronics Corporation
+# Copyright (C) 2015 Cogent Embedded, Inc.
+#
+# SPDX-License-Identifier: GPL-2.0
+#
+
+obj-y	:= porter.o qos.o ../rcar-gen2-common/common.o

board/renesas/porter/porter.c

+/*
+ * board/renesas/porter/porter.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 <dm.h>
+#include <dm/platform_data/serial_sh.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/sh_sdhi.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;
+	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 TMU0_MSTP125	(1 << 25)
+#define SDHI0_MSTP314	(1 << 14)
+#define SDHI2_MSTP311	(1 << 11)
+#define SCIF0_MSTP721	(1 << 21)
+#define ETHER_MSTP813	(1 << 13)
+
+#define SD2CKCR		0xE615026C
+#define SD_97500KHZ	0x7
+
+int board_early_init_f(void)
+{
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+
+	/* SCIF0 */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);
+
+	/* ETHER */
+	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
+
+	/* SDHI  */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SDHI0_MSTP314 | SDHI2_MSTP311);
+
+	/*
+	 * SD0 clock is set to 97.5MHz by default.
+	 * Set SD2 to the 97.5MHz as well.
+	 */
+	writel(SD_97500KHZ, SD2CKCR);
+
+	return 0;
+}
+
+/* LSI pin pull-up control */
+#define PUPR5		0xe6060114
+#define PUPR5_ETH	0x3FFC0000
+#define PUPR5_ETH_MAGIC	(1 << 27)
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	/* Init PFC controller */
+	r8a7791_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_TXD0, NULL);
+	gpio_request(GPIO_FN_ETH_MDC, NULL);
+	gpio_request(GPIO_FN_IRQ0, NULL);
+
+	mstp_clrbits_le32(PUPR5, PUPR5, PUPR5_ETH & ~PUPR5_ETH_MAGIC);
+	gpio_request(GPIO_GP_5_22, NULL); /* PHY_RST */
+	mstp_clrbits_le32(PUPR5, PUPR5, PUPR5_ETH_MAGIC);
+
+	gpio_direction_output(GPIO_GP_5_22, 0);
+	mdelay(20);
+	gpio_set_value(GPIO_GP_5_22, 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 = -ENODEV;
+
+#ifdef CONFIG_SH_SDHI
+	gpio_request(GPIO_FN_SD0_DATA0, NULL);
+	gpio_request(GPIO_FN_SD0_DATA1, NULL);
+	gpio_request(GPIO_FN_SD0_DATA2, NULL);
+	gpio_request(GPIO_FN_SD0_DATA3, NULL);
+	gpio_request(GPIO_FN_SD0_CLK, NULL);
+	gpio_request(GPIO_FN_SD0_CMD, NULL);
+	gpio_request(GPIO_FN_SD0_CD, NULL);
+	gpio_request(GPIO_FN_SD2_DATA0, NULL);
+	gpio_request(GPIO_FN_SD2_DATA1, NULL);
+	gpio_request(GPIO_FN_SD2_DATA2, NULL);
+	gpio_request(GPIO_FN_SD2_DATA3, NULL);
+	gpio_request(GPIO_FN_SD2_CLK, NULL);
+	gpio_request(GPIO_FN_SD2_CMD, NULL);
+	gpio_request(GPIO_FN_SD2_CD, NULL);
+
+	/* SDHI 0 */
+	gpio_request(GPIO_GP_2_12, NULL);
+	gpio_direction_output(GPIO_GP_2_12, 1); /* 1: 3.3V, 0: 1.8V */
+
+	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI0_BASE, 0,
+			   SH_SDHI_QUIRK_16BIT_BUF);
+	if (ret)
+		return ret;
+
+	/* SDHI 2 */
+	gpio_request(GPIO_GP_2_26, NULL);
+	gpio_direction_output(GPIO_GP_2_26, 1); /* 1: 3.3V, 0: 1.8V */
+
+	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI2_BASE, 2, 0);
+#endif
+	return ret;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+/* porter has KSZ8041RNLI */
+#define PHY_CONTROL1		0x1E
+#define PHY_LED_MODE		0xC0000
+#define PHY_LED_MODE_ACK	0x4000
+int board_phy_config(struct phy_device *phydev)
+{
+	int ret = phy_read(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1);
+	ret &= ~PHY_LED_MODE;
+	ret |= PHY_LED_MODE_ACK;
+	ret = phy_write(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1, (u16)ret);
+
+	return 0;
+}
+
+const struct rmobile_sysinfo sysinfo = {
+	CONFIG_RMOBILE_BOARD_STRING
+};
+
+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);
+}
+
+static const struct sh_serial_platdata serial_platdata = {
+	.base = SCIF0_BASE,
+	.type = PORT_SCIF,
+	.clk = CONFIG_P_CLK_FREQ,
+};
+
+U_BOOT_DEVICE(porter_serials) = {
+	.name = "serial_sh",
+	.platdata = &serial_platdata,
+};

board/renesas/porter/qos.h

+/*
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Cogent Embedded, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#ifndef __QOS_H__
+#define __QOS_H__
+
+void qos_init(void);
+
+#endif

configs/porter_defconfig

+CONFIG_ARM=y
+CONFIG_RMOBILE=y
+CONFIG_TARGET_PORTER=y
+CONFIG_DM=y
+CONFIG_DM_SERIAL=y
+CONFIG_SH_SDHI=y

include/configs/porter.h

+/*
+ * include/configs/porter.h
+ *     This file is Porter board configuration.
+ *
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Cogent Embedded, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#ifndef __PORTER_H
+#define __PORTER_H
+
+#undef DEBUG
+#define CONFIG_R8A7791
+#define CONFIG_RMOBILE_BOARD_STRING "Porter"
+
+#include "rcar-gen2-common.h"
+
+#if defined(CONFIG_RMOBILE_EXTRAM_BOOT)
+#define CONFIG_SYS_TEXT_BASE	0x70000000
+#else
+#define CONFIG_SYS_TEXT_BASE	0xE6304000
+#endif
+
+#if defined(CONFIG_RMOBILE_EXTRAM_BOOT)
+#define CONFIG_SYS_INIT_SP_ADDR		0x7003FFFC
+#else
+#define CONFIG_SYS_INIT_SP_ADDR		0xE633fffC
+#endif
+#define STACK_AREA_SIZE			0xC000
+#define LOW_LEVEL_MERAM_STACK \
+		(CONFIG_SYS_INIT_SP_ADDR + STACK_AREA_SIZE - 4)
+
+/* MEMORY */
+#define RCAR_GEN2_SDRAM_BASE		0x40000000
+#define RCAR_GEN2_SDRAM_SIZE		(2048u * 1024 * 1024)
+#define RCAR_GEN2_UBOOT_SDRAM_SIZE	(1024u * 1024 * 1024)
+
+/* SCIF */
+#define CONFIG_SCIF_CONSOLE
+
+/* FLASH */
+#define CONFIG_SPI
+#define CONFIG_SPI_FLASH_BAR
+#define CONFIG_SH_QSPI
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_SPANSION
+#define CONFIG_SPI_FLASH_QUAD
+#define CONFIG_SYS_NO_FLASH
+
+/* SH Ether */
+#define	CONFIG_NET_MULTI
+#define CONFIG_SH_ETHER
+#define CONFIG_SH_ETHER_USE_PORT	0
+#define CONFIG_SH_ETHER_PHY_ADDR	0x1
+#define CONFIG_SH_ETHER_PHY_MODE PHY_INTERFACE_MODE_RMII
+#define CONFIG_SH_ETHER_CACHE_WRITEBACK
+#define CONFIG_SH_ETHER_CACHE_INVALIDATE
+#define CONFIG_SH_ETHER_ALIGNE_SIZE	64
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL
+#define CONFIG_BITBANGMII
+#define CONFIG_BITBANGMII_MULTI
+
+/* Board Clock */
+#define RMOBILE_XTAL_CLK	20000000u
+#define CONFIG_SYS_CLK_FREQ	RMOBILE_XTAL_CLK
+#define CONFIG_SH_TMU_CLK_FREQ	(CONFIG_SYS_CLK_FREQ / 2)
+#define CONFIG_PLL1_CLK_FREQ	(CONFIG_SYS_CLK_FREQ * 156 / 2)
+#define CONFIG_P_CLK_FREQ	(CONFIG_PLL1_CLK_FREQ / 24)
+
+#define CONFIG_SYS_TMU_CLK_DIV	4
+
+/* i2c */
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_SH
+#define CONFIG_SYS_I2C_SLAVE		0x7F
+#define CONFIG_SYS_I2C_SH_NUM_CONTROLLERS	3
+#define CONFIG_SYS_I2C_SH_SPEED0	400000
+#define CONFIG_SYS_I2C_SH_SPEED1	400000
+#define CONFIG_SYS_I2C_SH_SPEED2	400000
+#define CONFIG_SH_I2C_DATA_HIGH		4
+#define CONFIG_SH_I2C_DATA_LOW		5
+#define CONFIG_SH_I2C_CLOCK		10000000
+
+#define CONFIG_SYS_I2C_POWERIC_ADDR	0x58 /* da9063 */
+
+/* USB */
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_RMOBILE
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	2
+#define CONFIG_USB_STORAGE
+
+/* SD */
+#define CONFIG_MMC
+#define CONFIG_CMD_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_SH_SDHI_FREQ	97500000
+
+/* Module stop status bits */
+/* INTC-RT */
+#define CONFIG_SMSTP0_ENA	0x00400000
+/* MSIF */
+#define CONFIG_SMSTP2_ENA	0x00002000
+/* INTC-SYS, IRQC */
+#define CONFIG_SMSTP4_ENA	0x00000180
+/* SCIF0 */
+#define CONFIG_SMSTP7_ENA	0x00200000
+
+#endif /* __PORTER_H */