[U-Boot] [PATCH v4 2/2] MarSBoard: add new board

["Eric Bénard" <eric@eukrea.com>]

this board is produced by Embest/Element 14 and is based on i.MX6 Dual
The following features are tested :
- UART2 (console)
- eMMC
- uSDCard
- Ethernet
- USB Host (through 2 ports hub)
- HDMI output
- I2C 1/2
- SPI NOR Flash
- LVDS TFT with LCD8000-97C from Embest/Element 14

Boot on SPI NOR and through USB loader are tested.

For more informations on this board :
http://www.embest-tech.com/shop/star/marsboard.html

As this board shares a lot with RiOTboard, both boards are supported by
the same code base which is renamed embest/mx6boards.

Signed-off-by: Eric B?nard <eric@eukrea.com>
---
v4: add LVDS TFT support
v3: switch to automatic board detection in c code to remove the #ifdef
    #ifdef kept in the config file as one binary for both boards is not
    possible actually since both boards use different RAM init.

 board/embest/{riotboard => mx6boards}/Makefile     |   2 +-
 .../riotboard.c => mx6boards/mx6boards.c}          | 118 ++++++++++++++++++---
 boards.cfg                                         |   3 +-
 include/configs/{riotboard.h => embestmx6boards.h} |  58 ++++++++++
 4 files changed, 166 insertions(+), 15 deletions(-)
 rename board/embest/{riotboard => mx6boards}/Makefile (87%)
 rename board/embest/{riotboard/riotboard.c => mx6boards/mx6boards.c} (81%)
 rename include/configs/{riotboard.h => embestmx6boards.h} (84%)

diff --git a/board/embest/riotboard/Makefile b/board/embest/mx6boards/Makefile
similarity index 87%
rename from board/embest/riotboard/Makefile
rename to board/embest/mx6boards/Makefile
index 5f978c0..467fb50 100644
--- a/board/embest/riotboard/Makefile
+++ b/board/embest/mx6boards/Makefile
@@ -6,4 +6,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y  := riotboard.o
+obj-y  := mx6boards.o
diff --git a/board/embest/riotboard/riotboard.c b/board/embest/mx6boards/mx6boards.c
similarity index 81%
rename from board/embest/riotboard/riotboard.c
rename to board/embest/mx6boards/mx6boards.c
index 1627156..fc133c5 100644
--- a/board/embest/riotboard/riotboard.c
+++ b/board/embest/mx6boards/mx6boards.c
@@ -14,6 +14,7 @@
  */
 
 #include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/mx6-pins.h>
@@ -60,6 +61,13 @@ DECLARE_GLOBAL_DATA_PTR;
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
 	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
 
+#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
+		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+
+static int board_type = -1;
+#define BOARD_IS_MARSBOARD	0
+#define BOARD_IS_RIOTBOARD	1
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -153,6 +161,9 @@ iomux_v3_cfg_t const usdhc3_pads[] = {
 	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+iomux_v3_cfg_t const riotboard_usdhc3_pads[] = {
 	MX6_PAD_SD3_DAT4__GPIO7_IO01 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */
 	MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 };
@@ -188,7 +199,10 @@ int board_mmc_getcd(struct mmc *mmc)
 		ret = !gpio_get_value(USDHC2_CD_GPIO);
 		break;
 	case USDHC3_BASE_ADDR:
-		ret = !gpio_get_value(USDHC3_CD_GPIO);
+		if (board_type == BOARD_IS_RIOTBOARD)
+			ret = !gpio_get_value(USDHC3_CD_GPIO);
+		else if (board_type == BOARD_IS_MARSBOARD)
+			ret = 1; /* eMMC/uSDHC3 is always present */
 		break;
 	case USDHC4_BASE_ADDR:
 		ret = 1; /* eMMC/uSDHC4 is always present */
@@ -206,9 +220,13 @@ int board_mmc_init(bd_t *bis)
 	/*
 	 * According to the board_mmc_init() the following map is done:
 	 * (U-boot device node)    (Physical Port)
+	 * ** RiOTboard :
 	 * mmc0                    SDCard slot (bottom)
 	 * mmc1                    uSDCard slot (top)
 	 * mmc2                    eMMC
+	 * ** MarSBoard :
+	 * mmc0                    uSDCard slot (bottom)
+	 * mmc1                    eMMC
 	 */
 	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 		switch (i) {
@@ -222,7 +240,15 @@ int board_mmc_init(bd_t *bis)
 		case 1:
 			imx_iomux_v3_setup_multiple_pads(
 				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
-			gpio_direction_input(USDHC3_CD_GPIO);
+			if (board_type == BOARD_IS_RIOTBOARD) {
+				imx_iomux_v3_setup_multiple_pads(
+					riotboard_usdhc3_pads,
+					ARRAY_SIZE(riotboard_usdhc3_pads));
+				gpio_direction_input(USDHC3_CD_GPIO);
+				gpio_direction_output(IMX_GPIO_NR(7, 8) , 0);
+				udelay(250);
+				gpio_set_value(IMX_GPIO_NR(7, 8), 1);
+			}
 			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 			usdhc_cfg[1].max_bus_width = 4;
 			break;
@@ -249,6 +275,20 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
+#ifdef CONFIG_MXC_SPI
+iomux_v3_cfg_t const ecspi1_pads[] = {
+	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_spi(void)
+{
+	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
+}
+#endif
+
 struct i2c_pads_info i2c_pad_info1 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL
@@ -300,7 +340,7 @@ struct i2c_pads_info i2c_pad_info3 = {
 	}
 };
 
-iomux_v3_cfg_t const tft_pads[] = {
+iomux_v3_cfg_t const tft_pads_riot[] = {
 	/* LCD_PWR_EN */
 	MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
 	/* TOUCH_INT */
@@ -311,6 +351,17 @@ iomux_v3_cfg_t const tft_pads[] = {
 	MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
+iomux_v3_cfg_t const tft_pads_mars[] = {
+	/* LCD_PWR_EN */
+	MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* TOUCH_INT */
+	MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* LED_PWR_EN */
+	MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* BL LEVEL (PWM4) */
+	MX6_PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
 #if defined(CONFIG_VIDEO_IPUV3)
 struct display_info_t {
 	int	bus;
@@ -328,7 +379,10 @@ static void enable_lvds(struct display_info_t const *dev)
 	setbits_le32(&iomux->gpr[2],
 		     IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT);
 	/* set backlight level to ON */
-	gpio_direction_output(IMX_GPIO_NR(1, 18) , 1);
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 1);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 1);
 }
 
 static void disable_lvds(struct display_info_t const *dev)
@@ -336,7 +390,10 @@ static void disable_lvds(struct display_info_t const *dev)
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 
 	/* set backlight level to OFF */
-	gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
 
 	clrbits_le32(&iomux->gpr[2],
 		     IOMUXC_GPR2_LVDS_CH0_MODE_MASK);
@@ -508,10 +565,25 @@ int board_eth_init(bd_t *bis)
 
 int board_early_init_f(void)
 {
+	u32 cputype = cpu_type(get_cpu_rev());
+
+	switch (cputype) {
+	case MXC_CPU_MX6SOLO:
+		board_type = BOARD_IS_RIOTBOARD;
+		break;
+	case MXC_CPU_MX6D:
+		board_type = BOARD_IS_MARSBOARD;
+		break;
+	}
+
 	setup_iomux_uart();
 
-	imx_iomux_v3_setup_multiple_pads(
-		tft_pads, ARRAY_SIZE(tft_pads));
+	if (board_type == BOARD_IS_RIOTBOARD)
+		imx_iomux_v3_setup_multiple_pads(
+			tft_pads_riot, ARRAY_SIZE(tft_pads_riot));
+	else if (board_type == BOARD_IS_MARSBOARD)
+		imx_iomux_v3_setup_multiple_pads(
+			tft_pads_mars, ARRAY_SIZE(tft_pads_mars));
 #if defined(CONFIG_VIDEO_IPUV3)
 	/* power ON LCD */
 	gpio_direction_output(IMX_GPIO_NR(1, 29) , 1);
@@ -520,7 +592,10 @@ int board_early_init_f(void)
 	/* power ON backlight */
 	gpio_direction_output(IMX_GPIO_NR(6, 15) , 1);
 	/* set backlight level to off */
-	gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
 	setup_display();
 #endif
 
@@ -531,29 +606,39 @@ int board_init(void)
 {
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
-	/* i2c1 : PMIC, Audio codec */
+	/* i2c1 : PMIC, Audio codec on RiOT, Expansion connector on MarS */
 	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 	/* i2c2 : HDMI EDID */
 	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 	/* i2c3 : LVDS, Expansion connector */
 	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3);
-
+#ifdef CONFIG_MXC_SPI
+	setup_spi();
+#endif
 	return 0;
 }
 
 #ifdef CONFIG_CMD_BMODE
-static const struct boot_mode board_boot_modes[] = {
+static const struct boot_mode riotboard_boot_modes[] = {
 	{"sd2",	 MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 	{"sd3",	 MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 	{"emmc", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 	{NULL,	 0},
 };
+static const struct boot_mode marsboard_boot_modes[] = {
+	{"sd2",	 MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
+	{"emmc", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+	{NULL,	 0},
+};
 #endif
 
 int board_late_init(void)
 {
 #ifdef CONFIG_CMD_BMODE
-	add_board_boot_modes(board_boot_modes);
+	if (board_type == BOARD_IS_RIOTBOARD)
+		add_board_boot_modes(riotboard_boot_modes);
+	else if (board_type == BOARD_IS_RIOTBOARD)
+		add_board_boot_modes(marsboard_boot_modes);
 #endif
 
 	return 0;
@@ -561,6 +646,13 @@ int board_late_init(void)
 
 int checkboard(void)
 {
-	puts("Board: RIoTboard\n");
+	puts("Board: ");
+	if (board_type == BOARD_IS_MARSBOARD)
+		puts("MarSBoard\n");
+	else if (board_type == BOARD_IS_RIOTBOARD)
+		puts("RIoTboard\n");
+	else
+		printf("unknown - cputype : %02x\n", cpu_type(get_cpu_rev()));
+
 	return 0;
 }
diff --git a/boards.cfg b/boards.cfg
index a29417c..d211cda 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -323,7 +323,8 @@ Active  arm         armv7          mx6         freescale       mx6sabresd
 Active  arm         armv7          mx6         freescale       mx6sabresd          mx6qsabresd                          mx6sabresd:IMX_CONFIG=board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg,MX6Q                                                           Fabio Estevam <fabio.estevam@freescale.com>
 Active  arm         armv7          mx6         freescale       mx6slevk            mx6slevk                             mx6slevk:IMX_CONFIG=board/freescale/mx6slevk/imximage.cfg,MX6SL                                                                   Fabio Estevam <fabio.estevam@freescale.com>
 Active  arm         armv7          mx6         solidrun        hummingboard        hummingboard_solo                    hummingboard:IMX_CONFIG=board/solidrun/hummingboard/solo.cfg,MX6S,DDR_MB=512                                                      Jon Nettleton <jon.nettleton@gmail.com>
-Active  arm         armv7          mx6         embest          riotboard           riotboard                            riotboard:IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6s1g.cfg,MX6S,DDR_MB=1024                                                 Eric B?nard <eric@eukrea.com>
+Active  arm         armv7          mx6         embest          mx6boards           riotboard                            embestmx6boards:IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6s1g.cfg,MX6S,DDR_MB=1024,RIOTBOARD                                         Eric B?nard <eric@eukrea.com>
+Active  arm         armv7          mx6         embest          mx6boards           marsboard                            embestmx6boards:IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6q.cfg,MX6Q,DDR_MB=1024,MARSBOARD                                           Eric B?nard <eric@eukrea.com>
 Active  arm         armv7          omap3       -               overo               omap3_overo                          -                                                                                                                                 Steve Sakoman <sakoman@gmail.com>
 Active  arm         armv7          omap3       -               pandora             omap3_pandora                        -                                                                                                                                 Grazvydas Ignotas <notasas@gmail.com>
 Active  arm         armv7          omap3       8dtech          eco5pk              eco5pk                               -                                                                                                                                 Raphael Assenat <raph@8d.com>
diff --git a/include/configs/riotboard.h b/include/configs/embestmx6boards.h
similarity index 84%
rename from include/configs/riotboard.h
rename to include/configs/embestmx6boards.h
index 747ec79..07ea2d2 100644
--- a/include/configs/riotboard.h
+++ b/include/configs/embestmx6boards.h
@@ -22,10 +22,19 @@
 #define CONFIG_MXC_UART_BASE		UART2_BASE
 #define CONFIG_CONSOLE_DEV		"ttymxc0"
 #define CONFIG_MMCROOT			"/dev/mmcblk1p2"
+#ifdef CONFIG_RIOTBOARD
 #define CONFIG_DEFAULT_FDT_FILE	"imx6s-riotboard.dtb"
+#elif defined CONFIG_MARSBOARD
+#define CONFIG_DEFAULT_FDT_FILE	"imx6q-marsboard.dtb"
+#else
+#error Please define a board (RIOTBOARD or MARSBOARD)
+#endif
+
 #define PHYS_SDRAM_SIZE		(1u * 1024 * 1024 * 1024)
 
+#ifdef CONFIG_RIOTBOARD
 #define CONFIG_SUPPORT_EMMC_BOOT /* eMMC specific */
+#endif
 
 #define CONFIG_MX6
 
@@ -96,6 +105,19 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_ATHEROS
 
+#ifdef CONFIG_MARSBOARD
+#define CONFIG_CMD_SF
+#ifdef CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_SST
+#define CONFIG_MXC_SPI
+#define CONFIG_SF_DEFAULT_BUS		0
+#define CONFIG_SF_DEFAULT_CS		(0 | (IMX_GPIO_NR(2, 30) << 8))
+#define CONFIG_SF_DEFAULT_SPEED		20000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
+#endif
+#endif
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX              1
@@ -134,6 +156,24 @@
 #define EMMC_ENV ""
 #endif
 
+#ifdef CONFIG_CMD_SF
+#define SF_ENV \
+	"update_spi_firmware=" \
+		"if test ${ip_dyn} = yes; then " \
+			"setenv get_cmd dhcp; " \
+		"else " \
+			"setenv get_cmd tftp; " \
+		"fi; " \
+		"if ${get_cmd} ${update_spi_firmware_filename}; then " \
+			"if sf probe; then "	\
+				"sf erase 0 0xc0000; " \
+				"sf write ${loadaddr} 0x400 ${filesize}; " \
+			"fi; "	\
+		"fi\0"
+#else
+#define SF_ENV ""
+#endif
+
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
@@ -161,6 +201,7 @@
 			"fi; "	\
 		"fi\0" \
 	EMMC_ENV	  \
+	SF_ENV	  \
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
 		"root=${mmcroot}\0" \
 	"loadbootscript=" \
@@ -263,10 +304,22 @@
 
 #define CONFIG_ENV_SIZE			(8 * 1024)
 
+#ifdef CONFIG_RIOTBOARD
 #define CONFIG_ENV_IS_IN_MMC
+#endif
+#ifdef CONFIG_MARSBOARD
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#endif
 
 #if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_ENV_OFFSET		(6 * 64 * 1024)
+#elif defined(CONFIG_ENV_IS_IN_SPI_FLASH)
+#define CONFIG_ENV_OFFSET		(768 * 1024)
+#define CONFIG_ENV_SECT_SIZE		(8 * 1024)
+#define CONFIG_ENV_SPI_BUS		CONFIG_SF_DEFAULT_BUS
+#define CONFIG_ENV_SPI_CS		CONFIG_SF_DEFAULT_CS
+#define CONFIG_ENV_SPI_MODE		CONFIG_SF_DEFAULT_MODE
+#define CONFIG_ENV_SPI_MAX_HZ		CONFIG_SF_DEFAULT_SPEED
 #endif
 
 #define CONFIG_OF_LIBFDT
@@ -275,7 +328,12 @@
 #define CONFIG_CMD_CACHE
 #endif
 
+#ifdef CONFIG_RIOTBOARD
 #define CONFIG_SYS_FSL_USDHC_NUM	3
+#elif defined(CONFIG_MARSBOARD)
+#define CONFIG_SYS_FSL_USDHC_NUM	2
+#endif
+
 #if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_SYS_MMC_ENV_DEV		2	/* SDHC4 */
 #endif
-- 
1.9.0