ARM64: hikey: hi6220: Add u-boot support for the 96boards CE HiKey board.

HiKey is the first 96boards consumer edition compliant board. It features a hi6220
SoC which has eight ARM A53 cpu's.

This initial port adds support for: -
1) Serial
2) eMMC / SD card
3) USB
4) GPIO

It has been tested with Arm Trusted Firmware running u-boot as the BL33 executable.

Notes:

eMMC has been tested with basic reading of eMMC partition into DDR. I have not
tested writing / erasing. Due to lack of clock control it won't be
running in the most performant high speed mode.

SD card slot has been tested for reading and booting kernels into DDR.
It is also currently configured to save the u-boot environment to the
SD card.

USB has been tested with ASIX networking adapter to tftpboot kernels
into DDR. On v2015.07-rc2 dhcp now works, and also USB mass storage
are correctly enumerated.

GPIO has been tested using gpio toggle GPIO4_1-3 to flash the LEDs.

Basic SoC datasheet can be found here: -
https://github.com/96boards/documentation/blob/master/hikey/
Hi6220V100_Multi-Mode_Application_Processor_Function_Description.pdf

Board schematic can be found here: -
https://github.com/96boards/documentation/blob/master/hikey/
96Boards-Hikey-Rev-A1.pdf

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>

6 files changed, 551 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a436e81..e9a30b6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -736,6 +736,13 @@ config TARGET_LS2085ARDB
 	  development platform that supports the QorIQ LS2085A
 	  Layerscape Architecture processor.
 
+config TARGET_HIKEY
+	bool "Support HiKey 96boards Consumer Edition Platform"
+	select ARM64
+	  help
+	  Support for HiKey 96boards platform. It features a HI6220
+	  SoC, with 8xA53 CPU, mali450 gpu, and 1GB RAM.
+
 config TARGET_LS1021AQDS
 	bool "Support ls1021aqds"
 	select CPU_V7
@@ -883,6 +890,7 @@ source "board/Marvell/gplugd/Kconfig"
 source "board/armadeus/apf27/Kconfig"
 source "board/armltd/vexpress/Kconfig"
 source "board/armltd/vexpress64/Kconfig"
+source "board/hisilicon/hikey/Kconfig"
 source "board/bachmann/ot1200/Kconfig"
 source "board/balloon3/Kconfig"
 source "board/barco/platinum/Kconfig"
diff --git a/board/hisilicon/hikey/Kconfig b/board/hisilicon/hikey/Kconfig
new file mode 100644
index 0000000..f7f1055
--- /dev/null
+++ b/board/hisilicon/hikey/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_HIKEY
+
+config SYS_BOARD
+	default "hikey"
+
+config SYS_VENDOR
+	default "hisilicon"
+
+config SYS_SOC
+	default "hi6220"
+
+config SYS_CONFIG_NAME
+	default "hikey"
+
+endif
diff --git a/board/hisilicon/hikey/Makefile b/board/hisilicon/hikey/Makefile
new file mode 100644
index 0000000..d4ec8c7
--- /dev/null
+++ b/board/hisilicon/hikey/Makefile
@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= hikey.o
diff --git a/board/hisilicon/hikey/hikey.c b/board/hisilicon/hikey/hikey.c
new file mode 100644
index 0000000..8c1271b
--- /dev/null
+++ b/board/hisilicon/hikey/hikey.c
@@ -0,0 +1,356 @@
+/*
+ * (C) Copyright 2015 Linaro
+ * Peter Griffin <peter.griffin@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <malloc.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <usb.h>
+#include <power/hi6553_pmic.h>
+#include <asm-generic/gpio.h>
+#include <asm/arch/dwmmc.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/hi6220.h>
+
+/*TODO drop this table in favour of device tree */
+static const struct hikey_gpio_platdata hi6220_gpio[] = {
+	{ 0, HI6220_GPIO_BASE(0)},
+	{ 1, HI6220_GPIO_BASE(1)},
+	{ 2, HI6220_GPIO_BASE(2)},
+	{ 3, HI6220_GPIO_BASE(3)},
+	{ 4, HI6220_GPIO_BASE(4)},
+	{ 5, HI6220_GPIO_BASE(5)},
+	{ 6, HI6220_GPIO_BASE(6)},
+	{ 7, HI6220_GPIO_BASE(7)},
+	{ 8, HI6220_GPIO_BASE(8)},
+	{ 9, HI6220_GPIO_BASE(9)},
+	{ 10, HI6220_GPIO_BASE(10)},
+	{ 11, HI6220_GPIO_BASE(11)},
+	{ 12, HI6220_GPIO_BASE(12)},
+	{ 13, HI6220_GPIO_BASE(13)},
+	{ 14, HI6220_GPIO_BASE(14)},
+	{ 15, HI6220_GPIO_BASE(15)},
+	{ 16, HI6220_GPIO_BASE(16)},
+	{ 17, HI6220_GPIO_BASE(17)},
+	{ 18, HI6220_GPIO_BASE(18)},
+	{ 19, HI6220_GPIO_BASE(19)},
+
+};
+
+U_BOOT_DEVICES(hi6220_gpios) = {
+	{ "gpio_hi6220", &hi6220_gpio[0] },
+	{ "gpio_hi6220", &hi6220_gpio[1] },
+	{ "gpio_hi6220", &hi6220_gpio[2] },
+	{ "gpio_hi6220", &hi6220_gpio[3] },
+	{ "gpio_hi6220", &hi6220_gpio[4] },
+	{ "gpio_hi6220", &hi6220_gpio[5] },
+	{ "gpio_hi6220", &hi6220_gpio[6] },
+	{ "gpio_hi6220", &hi6220_gpio[7] },
+	{ "gpio_hi6220", &hi6220_gpio[8] },
+	{ "gpio_hi6220", &hi6220_gpio[9] },
+	{ "gpio_hi6220", &hi6220_gpio[10] },
+	{ "gpio_hi6220", &hi6220_gpio[11] },
+	{ "gpio_hi6220", &hi6220_gpio[12] },
+	{ "gpio_hi6220", &hi6220_gpio[13] },
+	{ "gpio_hi6220", &hi6220_gpio[14] },
+	{ "gpio_hi6220", &hi6220_gpio[15] },
+	{ "gpio_hi6220", &hi6220_gpio[16] },
+	{ "gpio_hi6220", &hi6220_gpio[17] },
+	{ "gpio_hi6220", &hi6220_gpio[18] },
+	{ "gpio_hi6220", &hi6220_gpio[19] },
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct peri_sc_periph_regs *peri_sc =
+	(struct peri_sc_periph_regs *)HI6220_PERI_BASE;
+
+struct alwayson_sc_regs *ao_sc =
+	(struct alwayson_sc_regs *)ALWAYSON_CTRL_BASE;
+
+/* status offset from enable reg */
+#define STAT_EN_OFF 0x2
+
+void hi6220_clk_enable(u32 bitfield, unsigned int *clk_base)
+{
+	uint32_t data;
+
+	data = readl(clk_base);
+	data |= bitfield;
+
+	writel(bitfield, clk_base);
+	do {
+		data = readl(clk_base + STAT_EN_OFF);
+	} while ((data & bitfield) == 0);
+}
+
+/* status offset from disable reg */
+#define STAT_DIS_OFF 0x1
+
+void hi6220_clk_disable(u32 bitfield, unsigned int *clk_base)
+{
+	uint32_t data;
+
+	data = readl(clk_base);
+	data |= bitfield;
+
+	writel(data, clk_base);
+	do {
+		data = readl(clk_base + STAT_DIS_OFF);
+	} while (data & bitfield);
+}
+
+#define EYE_PATTERN	0x70533483
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	unsigned int data;
+
+	/* enable USB clock */
+	hi6220_clk_enable(PERI_CLK0_USBOTG, &peri_sc->clk0_en);
+
+	/* take usb IPs out of reset */
+	writel(PERI_RST0_USBOTG_BUS | PERI_RST0_POR_PICOPHY |
+		PERI_RST0_USBOTG | PERI_RST0_USBOTG_32K,
+		&peri_sc->rst0_dis);
+	do {
+		data = readl(&peri_sc->rst0_stat);
+		data &= PERI_RST0_USBOTG_BUS | PERI_RST0_POR_PICOPHY |
+			PERI_RST0_USBOTG | PERI_RST0_USBOTG_32K;
+	} while (data);
+
+	/*CTRL 5*/
+	data = readl(&peri_sc->ctrl5);
+	data &= ~PERI_CTRL5_PICOPHY_BC_MODE;
+	data |= PERI_CTRL5_USBOTG_RES_SEL | PERI_CTRL5_PICOPHY_ACAENB;
+	data |= 0x300;
+	writel(data, &peri_sc->ctrl5);
+
+	/*CTRL 4*/
+
+	/* configure USB PHY */
+	data = readl(&peri_sc->ctrl4);
+
+	/* make PHY out of low power mode */
+	data &= ~PERI_CTRL4_PICO_SIDDQ;
+	data &= ~PERI_CTRL4_PICO_OGDISABLE;
+	data |= PERI_CTRL4_PICO_VBUSVLDEXTSEL | PERI_CTRL4_PICO_VBUSVLDEXT;
+	writel(data, &peri_sc->ctrl4);
+
+	writel(EYE_PATTERN, &peri_sc->ctrl8);
+
+	mdelay(5);
+	return 0;
+}
+
+static int config_sd_carddetect(void)
+{
+	int ret;
+
+	/* configure GPIO8 as nopull */
+	writel(0, 0xf8001830);
+
+	gpio_request(8, "SD CD");
+
+	gpio_direction_input(8);
+	ret = gpio_get_value(8);
+
+	if (!ret) {
+		printf("%s: SD card present\n", __func__);
+		return 1;
+	}
+
+	printf("%s: SD card not present\n", __func__);
+	return 0;
+}
+
+
+static void mmc1_init_pll(void)
+{
+	uint32_t data;
+
+	/* select SYSPLL as the source of MMC1 */
+	/* select SYSPLL as the source of MUX1 (SC_CLK_SEL0) */
+	writel(1 << 11 | 1 << 27, &peri_sc->clk0_sel);
+	do {
+		data = readl(&peri_sc->clk0_sel);
+	} while (!(data & (1 << 11)));
+
+	/* select MUX1 as the source of MUX2 (SC_CLK_SEL0) */
+	writel(1 << 30, &peri_sc->clk0_sel);
+	do {
+		data = readl(&peri_sc->clk0_sel);
+	} while (data & (1 << 14));
+
+	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);
+
+	hi6220_clk_enable(PERI_CLK12_MMC1_SRC, &peri_sc->clk12_en);
+
+	do {
+		/* 1.2GHz / 50 = 24MHz */
+		writel(0x31 | (1 << 7), &peri_sc->clkcfg8bit2);
+		data = readl(&peri_sc->clkcfg8bit2);
+	} while ((data & 0x31) != 0x31);
+}
+
+static void mmc1_reset_clk(void)
+{
+	unsigned int data;
+
+	/* disable mmc1 bus clock */
+	hi6220_clk_disable(PERI_CLK0_MMC1, &peri_sc->clk0_dis);
+
+	/* enable mmc1 bus clock */
+	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);
+
+	/* reset mmc1 clock domain */
+	writel(PERI_RST0_MMC1, &peri_sc->rst0_en);
+
+	/* bypass mmc1 clock phase */
+	data = readl(&peri_sc->ctrl2);
+	data |= 3 << 2;
+	writel(data, &peri_sc->ctrl2);
+
+	/* disable low power */
+	data = readl(&peri_sc->ctrl13);
+	data |= 1 << 4;
+	writel(data, &peri_sc->ctrl13);
+	do {
+		data = readl(&peri_sc->rst0_stat);
+	} while (!(data & PERI_RST0_MMC1));
+
+	/* unreset mmc0 clock domain */
+	writel(PERI_RST0_MMC1, &peri_sc->rst0_dis);
+	do {
+		data = readl(&peri_sc->rst0_stat);
+	} while (data & PERI_RST0_MMC1);
+}
+
+/* PMU SSI is the IP that maps the external PMU hi6553 registers as IO */
+static void hi6220_pmussi_init(void)
+{
+	uint32_t data;
+
+	/* Take PMUSSI out of reset */
+	writel(ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N,
+	       &ao_sc->rst4_dis);
+	do {
+		data = readl(&ao_sc->rst4_stat);
+	} while (data & ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N);
+
+	/* set PMU SSI clock latency for read operation */
+	data = readl(&ao_sc->mcu_subsys_ctrl3);
+	data &= ~ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_MASK;
+	data |= ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_3;
+	writel(data, &ao_sc->mcu_subsys_ctrl3);
+
+	/* enable PMUSSI clock */
+	data = ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_CCPU |
+	       ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_MCU;
+
+	hi6220_clk_enable(data, &ao_sc->clk5_en);
+
+	/* Output high to PMIC on PWR_HOLD_GPIO0_0 */
+	gpio_request(0, "PWR_HOLD_GPIO0_0");
+	gpio_direction_output(0, 1);
+}
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+int board_init(void)
+{
+	gd->flags = 0;
+
+	return 0;
+}
+
+#ifdef CONFIG_GENERIC_MMC
+
+static int init_dwmmc(void)
+{
+	int ret;
+
+#ifdef CONFIG_DWMMC
+
+	/* mmc0 clocks are already configured by ATF */
+	ret = hi6220_pinmux_config(PERIPH_ID_SDMMC0);
+	if (ret)
+		printf("%s: Error configuring pinmux for eMMC (%d)\n"
+			, __func__, ret);
+
+	ret |= hi6220_dwmci_add_port(0, HI6220_MMC0_BASE, 8);
+	if (ret)
+		printf("%s: Error adding eMMC port (%d)\n", __func__, ret);
+
+
+	/* take mmc1 (sd slot) out of reset, configure clocks and pinmuxing */
+	mmc1_init_pll();
+	mmc1_reset_clk();
+
+	ret |= hi6220_pinmux_config(PERIPH_ID_SDMMC1);
+	if (ret)
+		printf("%s: Error configuring pinmux for eMMC (%d)\n"
+			, __func__, ret);
+
+	config_sd_carddetect();
+
+	ret |= hi6220_dwmci_add_port(1, HI6220_MMC1_BASE, 4);
+	if (ret)
+		printf("%s: Error adding SD port (%d)\n", __func__, ret);
+
+#endif
+	return ret;
+}
+
+/* setup board specific PMIC */
+int power_init_board(void)
+{
+	/* init the hi6220 pmussi ip */
+	hi6220_pmussi_init();
+
+	power_hi6553_init((u8 *)HI6220_PMUSSI_BASE);
+
+	return 0;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int ret;
+
+	/* add the eMMC and sd ports */
+	ret = init_dwmmc();
+
+	if (ret)
+		debug("init_dwmmc failed\n");
+
+	return ret;
+}
+#endif
+
+int dram_init(void)
+{
+	gd->ram_size = PHYS_SDRAM_1_SIZE;
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+}
+
+/* Use the Watchdog to cause reset */
+void reset_cpu(ulong addr)
+{
+	/* TODO program the watchdog */
+}
diff --git a/configs/hikey_defconfig b/configs/hikey_defconfig
new file mode 100644
index 0000000..aa4fb0d
--- /dev/null
+++ b/configs/hikey_defconfig
@@ -0,0 +1,5 @@
+# 96boards HiKey
+CONFIG_ARM=y
+CONFIG_TARGET_HIKEY=y
+CONFIG_NET=y
+# CONFIG_CMD_IMLS is not set
diff --git a/include/configs/hikey.h b/include/configs/hikey.h
new file mode 100644
index 0000000..8ff9077
--- /dev/null
+++ b/include/configs/hikey.h
@@ -0,0 +1,159 @@
+/*
+ * (C) Copyright 2015 Linaro
+ *
+ * Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Configuration for HiKey 96boards CE. Parts were derived from other ARM
+ * configurations.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __HIKEY_H
+#define __HIKEY_H
+
+/* We use generic board for hikey */
+#define CONFIG_SYS_GENERIC_BOARD
+#define CONFIG_POWER
+#define CONFIG_POWER_HI6553
+
+#define CONFIG_REMAKE_ELF
+
+#define CONFIG_SUPPORT_RAW_INITRD
+
+/* Cache Definitions */
+#define CONFIG_SYS_DCACHE_OFF
+
+#define CONFIG_IDENT_STRING		"hikey"
+
+/* Flat Device Tree Definitions */
+#define CONFIG_OF_LIBFDT
+
+/* Physical Memory Map */
+
+/* CONFIG_SYS_TEXT_BASE needs to align with where ATF loads bl33.bin */
+#define CONFIG_SYS_TEXT_BASE		0x35000000
+
+#define CONFIG_NR_DRAM_BANKS		1
+#define PHYS_SDRAM_1			0x00000000
+
+/* 1008 MB (the last 16Mb are secured for TrustZone by ATF*/
+#define PHYS_SDRAM_1_SIZE		0x3f000000
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+
+#define CONFIG_SYS_INIT_RAM_SIZE	0x1000
+
+#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + 0x7fff0)
+
+#define CONFIG_SYS_LOAD_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x80000)
+
+/* Generic Timer Definitions */
+#define COUNTER_FREQUENCY		19000000
+
+/* Generic Interrupt Controller Definitions */
+#define GICD_BASE			0xf6801000
+#define GICC_BASE			0xf6802000
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + (8 << 20))
+
+/* PL011 Serial Configuration */
+#define CONFIG_PL011_SERIAL
+
+#define CONFIG_PL011_CLOCK		19200000
+#define CONFIG_PL01x_PORTS		{(void *)0xF8015000}
+#define CONFIG_CONS_INDEX		0
+
+#define CONFIG_BAUDRATE			115200
+
+#define CONFIG_CMD_USB
+#ifdef CONFIG_CMD_USB
+#define CONFIG_USB_DWC2
+#define CONFIG_USB_DWC2_REG_ADDR 0xF72C0000
+/*#define CONFIG_DWC2_DFLT_SPEED_FULL*/
+#define CONFIG_DWC2_ENABLE_DYNAMIC_FIFO
+
+#define CONFIG_USB_STORAGE
+#define CONFIG_USB_HOST_ETHER
+#define CONFIG_USB_ETHER_SMSC95XX
+#define CONFIG_USB_ETHER_ASIX
+#define CONFIG_MISC_INIT_R
+#endif
+
+#define CONFIG_HIKEY_GPIO
+#define CONFIG_DM_GPIO
+#define CONFIG_CMD_GPIO
+#define CONFIG_DM
+
+/* SD/MMC configuration */
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC
+#define CONFIG_DWMMC
+#define CONFIG_HIKEY_DWMMC
+#define CONFIG_BOUNCE_BUFFER
+#define CONFIG_CMD_MMC
+
+#define CONFIG_FS_EXT4
+
+/* Command line configuration */
+#define CONFIG_MENU
+#define CONFIG_CMD_CACHE
+#define CONFIG_CMD_UNZIP
+#define CONFIG_CMD_ENV
+
+#define CONFIG_MTD_PARTITIONS
+
+/* BOOTP options */
+#define CONFIG_BOOTP_BOOTFILESIZE
+
+#include <config_distro_defaults.h>
+
+/* Initial environment variables */
+
+/*
+ * Defines where the kernel and FDT will be put in RAM
+ */
+
+/* Assume we boot with root on the seventh partition of eMMC */
+#define CONFIG_BOOTARGS	"console=ttyAMA0,115200n8 root=/dev/mmcblk0p9 rw"
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(USB, usb, 0) \
+	func(MMC, mmc, 1) \
+	func(DHCP, dhcp, na)
+#include <config_distro_bootcmd.h>
+
+#define CONFIG_EXTRA_ENV_SETTINGS	\
+				"kernel_name=Image\0"	\
+				"kernel_addr_r=0x00080000\0" \
+				"fdt_name=hi6220-hikey.dtb\0" \
+				"fdt_addr_r=0x02000000\0" \
+				"fdt_high=0xffffffffffffffff\0" \
+				"initrd_high=0xffffffffffffffff\0" \
+				BOOTENV
+
+
+/* Preserve enviroment on sd card */
+#define CONFIG_COMMAND_HISTORY
+
+#define CONFIG_ENV_SIZE			0x1000
+#define CONFIG_ENV_IS_IN_FAT
+#define FAT_ENV_INTERFACE               "mmc"
+#define FAT_ENV_DEVICE_AND_PART         "1:1"
+#define FAT_ENV_FILE                    "uboot.env"
+#define CONFIG_FAT_WRITE
+#define CONFIG_ENV_VARS_UBOOT_CONFIG
+
+/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE		512	/* Console I/O Buffer Size */
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
+					sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_SYS_MAXARGS		64	/* max command args */
+
+#define CONFIG_SYS_NO_FLASH
+
+#endif /* __HIKEY_H */