board/menlo/m53menlo/m53menlo.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Menlosystems M53Menlo board
  *
  * Copyright (C) 2012-2017 Marek Vasut <marex@denx.de>
  * Copyright (C) 2014-2017 Olaf Mandel <o.mandel@menlosystems.com>
  */

 #include <common.h>
 #include <dm.h>
 #include <init.h>
 #include <malloc.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux-mx53.h>
 #include <asm/mach-imx/boot_mode.h>
 #include <asm/mach-imx/mx5_video.h>
 #include <asm/mach-imx/video.h>
 #include <asm/gpio.h>
 #include <asm/spl.h>
 #include <env.h>
 #include <fdt_support.h>
 #include <fsl_esdhc_imx.h>
 #include <gzip.h>
 #include <i2c.h>
 #include <ipu_pixfmt.h>
 #include <linux/bitops.h>
 #include <linux/errno.h>
 #include <linux/fb.h>
 #include <mmc.h>
 #include <netdev.h>
 #include <spl.h>
 #include <splash.h>
 #include <usb/ehci-ci.h>
 #include <video_console.h>

 DECLARE_GLOBAL_DATA_PTR;

 static u32 mx53_dram_size[2];

 phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	/*
 	 * WARNING: We must override get_effective_memsize() function here
 	 * to report only the size of the first DRAM bank. This is to make
 	 * U-Boot relocator place U-Boot into valid memory, that is, at the
 	 * end of the first DRAM bank. If we did not override this function
 	 * like so, U-Boot would be placed at the address of the first DRAM
 	 * bank + total DRAM size - sizeof(uboot), which in the setup where
 	 * each DRAM bank contains 512MiB of DRAM would result in placing
 	 * U-Boot into invalid memory area close to the end of the first
 	 * DRAM bank.
 	 */
 	return PHYS_SDRAM_2 + mx53_dram_size[1];
 }

 int dram_init(void)
 {
 	mx53_dram_size[0] = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30);
 	mx53_dram_size[1] = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30);

 	gd->ram_size = mx53_dram_size[0] + mx53_dram_size[1];

 	return 0;
 }

 int dram_init_banksize(void)
 {
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = mx53_dram_size[0];

 	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 	gd->bd->bi_dram[1].size = mx53_dram_size[1];

 	return 0;
 }

 static void setup_iomux_uart(void)
 {
 	static const iomux_v3_cfg_t uart_pads[] = {
 		MX53_PAD_PATA_DMACK__UART1_RXD_MUX,
 		MX53_PAD_PATA_DIOW__UART1_TXD_MUX,
 	};

 	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
 }

 static void setup_iomux_fec(void)
 {
 	static const iomux_v3_cfg_t fec_pads[] = {
 		/* MDIO pads */
 		NEW_PAD_CTRL(MX53_PAD_FEC_MDIO__FEC_MDIO, PAD_CTL_HYS |
 			PAD_CTL_DSE_HIGH | PAD_CTL_PUS_22K_UP | PAD_CTL_ODE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_MDC__FEC_MDC, PAD_CTL_DSE_HIGH),

 		/* FEC 0 pads */
 		NEW_PAD_CTRL(MX53_PAD_FEC_CRS_DV__FEC_RX_DV,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_REF_CLK__FEC_TX_CLK,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_RX_ER__FEC_RX_ER,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_TX_EN__FEC_TX_EN, PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_FEC_RXD0__FEC_RDATA_0,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_RXD1__FEC_RDATA_1,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_FEC_TXD0__FEC_TDATA_0, PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_FEC_TXD1__FEC_TDATA_1, PAD_CTL_DSE_HIGH),

 		/* FEC 1 pads */
 		NEW_PAD_CTRL(MX53_PAD_KEY_COL0__FEC_RDATA_3,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_KEY_ROW0__FEC_TX_ER,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_KEY_COL1__FEC_RX_CLK,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_KEY_ROW1__FEC_COL,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_KEY_COL2__FEC_RDATA_2,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_KEY_ROW2__FEC_TDATA_2, PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_KEY_COL3__FEC_CRS,
 			     PAD_CTL_HYS | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_GPIO_19__FEC_TDATA_3, PAD_CTL_DSE_HIGH),
 	};

 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
 }

 #ifdef CONFIG_FSL_ESDHC_IMX
 struct fsl_esdhc_cfg esdhc_cfg = {
 	MMC_SDHC1_BASE_ADDR,
 };

 int board_mmc_getcd(struct mmc *mmc)
 {
 	imx_iomux_v3_setup_pad(MX53_PAD_GPIO_1__GPIO1_1);
 	gpio_direction_input(IMX_GPIO_NR(1, 1));

 	return !gpio_get_value(IMX_GPIO_NR(1, 1));
 }

 #define SD_CMD_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_DSE_HIGH | \
 				 PAD_CTL_PUS_100K_UP)
 #define SD_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_PUS_47K_UP | \
 				 PAD_CTL_DSE_HIGH)

 int board_mmc_init(struct bd_info *bis)
 {
 	static const iomux_v3_cfg_t sd1_pads[] = {
 		NEW_PAD_CTRL(MX53_PAD_SD1_CMD__ESDHC1_CMD, SD_CMD_PAD_CTRL),
 		NEW_PAD_CTRL(MX53_PAD_SD1_CLK__ESDHC1_CLK, SD_PAD_CTRL),
 		NEW_PAD_CTRL(MX53_PAD_SD1_DATA0__ESDHC1_DAT0, SD_PAD_CTRL),
 		NEW_PAD_CTRL(MX53_PAD_SD1_DATA1__ESDHC1_DAT1, SD_PAD_CTRL),
 		NEW_PAD_CTRL(MX53_PAD_SD1_DATA2__ESDHC1_DAT2, SD_PAD_CTRL),
 		NEW_PAD_CTRL(MX53_PAD_SD1_DATA3__ESDHC1_DAT3, SD_PAD_CTRL),
 	};

 	esdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);

 	imx_iomux_v3_setup_multiple_pads(sd1_pads, ARRAY_SIZE(sd1_pads));

 	return fsl_esdhc_initialize(bis, &esdhc_cfg);
 }
 #endif

 static void enable_lvds_clock(struct display_info_t const *dev, const u8 hclk)
 {
 	static struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE;
 	int ret;

 	/* For ETM0430G0DH6 model, this must be enabled before the clock. */
 	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);

 	/*
 	 * Set LVDS clock to 33.28 MHz for the display. The PLL4 is set to
 	 * 233 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
 	 */
 	ret = mxc_set_clock(MXC_HCLK, hclk, MXC_LDB_CLK);
 	if (ret)
 		puts("IPU:   Failed to configure LDB clock\n");

 	/* Configure CCM_CSCMR2 */
 	clrsetbits_le32(&mxc_ccm->cscmr2,
 			(0x7 << 26) | BIT(10) | BIT(8),
 			(0x5 << 26) | BIT(10) | BIT(8));

 	/* Configure LDB_CTRL */
 	writel(0x201, 0x53fa8008);
 }

 static void enable_lvds_etm0430g0dh6(struct display_info_t const *dev)
 {
 	gpio_request(IMX_GPIO_NR(6, 0), "LCD");

 	/* For ETM0430G0DH6 model, this must be enabled before the clock. */
 	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);

 	/*
 	 * Set LVDS clock to 9 MHz for the display. The PLL4 is set to
 	 * 63 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
 	 */
 	enable_lvds_clock(dev, 63);
 }

 static void enable_lvds_etm0700g0dh6(struct display_info_t const *dev)
 {
 	gpio_request(IMX_GPIO_NR(6, 0), "LCD");

 	/*
 	 * Set LVDS clock to 33.28 MHz for the display. The PLL4 is set to
 	 * 233 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
 	 */
 	enable_lvds_clock(dev, 233);

 	/* For ETM0700G0DH6 model, this may be enabled after the clock. */
 	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);
 }

 static const char *lvds_compat_string;

 static int detect_lvds(struct display_info_t const *dev)
 {
 	struct udevice *idev, *ibus;
 	u8 touchid[23];
 	u8 *touchptr = &touchid[0];
 	int ret;

 	ret = uclass_get_device_by_seq(UCLASS_I2C, 0, &ibus);
 	if (ret)
 		return 0;

 	ret = dm_i2c_probe(ibus, 0x38, 0, &idev);
 	if (ret)
 		return 0;

 	/* Touchscreen is at address 0x38, ID register is 0xbb. */
 	ret = dm_i2c_read(idev, 0xbb, touchid, sizeof(touchid));
 	if (ret)
 		return 0;

 	/* EP0430 prefixes the response with 0xbb, skip it. */
 	if (*touchptr == 0xbb)
 		touchptr++;

 	/* Skip the 'EP' prefix. */
 	touchptr += 2;

 	ret = !memcmp(touchptr, &dev->mode.name[7], 4);
 	if (ret)
 		lvds_compat_string = dev->mode.name;

 	return ret;
 }

 void board_preboot_os(void)
 {
 	/* Power off the LCD to prevent awful color flicker */
 	gpio_direction_output(IMX_GPIO_NR(6, 0), 0);
 }

 #if CONFIG_IS_ENABLED(OF_LIBFDT)
 int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	if (lvds_compat_string)
 		do_fixup_by_path_string(blob, "/panel", "compatible",
 					lvds_compat_string);

 	return 0;
 }
 #endif

 struct display_info_t const displays[] = {
 	{
 		.bus	= 0,
 		.addr	= 0,
 		.detect	= detect_lvds,
 		.enable	= enable_lvds_etm0430g0dh6,
 		.pixfmt	= IPU_PIX_FMT_RGB666,
 		.mode	= {
 			.name		= "edt,etm0430g0dh6",
 			.refresh	= 60,
 			.xres		= 480,
 			.yres		= 272,
 			.pixclock	= 111111, /* picosecond (9 MHz) */
 			.left_margin	= 2,
 			.right_margin	= 2,
 			.upper_margin	= 2,
 			.lower_margin	= 2,
 			.hsync_len	= 41,
 			.vsync_len	= 10,
 			.sync		= 0x40000000,
 			.vmode          = FB_VMODE_NONINTERLACED
 		}
 	}, {
 		.bus	= 0,
 		.addr	= 0,
 		.detect	= detect_lvds,
 		.enable	= enable_lvds_etm0700g0dh6,
 		.pixfmt	= IPU_PIX_FMT_RGB666,
 		.mode	= {
 			.name		= "edt,etm0700g0dh6",
 			.refresh	= 60,
 			.xres		= 800,
 			.yres		= 480,
 			.pixclock	= 30048, /* picosecond (33.28 MHz) */
 			.left_margin	= 40,
 			.right_margin	= 88,
 			.upper_margin	= 10,
 			.lower_margin	= 33,
 			.hsync_len	= 128,
 			.vsync_len	= 2,
 			.sync		= FB_SYNC_EXT,
 			.vmode          = FB_VMODE_NONINTERLACED
 		}
 	}
 };

 size_t display_count = ARRAY_SIZE(displays);

 #ifdef CONFIG_SPLASH_SCREEN
 static struct splash_location default_splash_locations[] = {
 	{
 		.name		= "mmc_fs",
 		.storage	= SPLASH_STORAGE_MMC,
 		.flags		= SPLASH_STORAGE_FS,
 		.devpart	= "0:1",
 	},
 };

 int splash_screen_prepare(void)
 {
 	return splash_source_load(default_splash_locations,
 				  ARRAY_SIZE(default_splash_locations));
 }
 #endif

 int board_late_init(void)
 {
 #ifdef CONFIG_CMD_BMODE
 	add_board_boot_modes(NULL);
 #endif

 #if defined(CONFIG_VIDEO_IPUV3)
 	struct udevice *dev;
 	int xpos, ypos, ret;
 	char *s;
 	void *dst;
 	ulong addr, len;

 	splash_get_pos(&xpos, &ypos);

 	s = env_get("splashimage");
 	if (!s)
 		return 0;

 	addr = hextoul(s, NULL);
 	dst = malloc(CONFIG_VIDEO_LOGO_MAX_SIZE);
 	if (!dst)
 		return -ENOMEM;

 	ret = splash_screen_prepare();
 	if (ret < 0)
 		goto splasherr;

 	len = CONFIG_VIDEO_LOGO_MAX_SIZE;
 	ret = gunzip(dst + 2, CONFIG_VIDEO_LOGO_MAX_SIZE - 2,
 		     (uchar *)addr, &len);
 	if (ret) {
 		printf("Error: no valid bmp or bmp.gz image at %lx\n", addr);
 		goto splasherr;
 	}

 	ret = uclass_get_device(UCLASS_VIDEO, 0, &dev);
 	if (ret)
 		goto splasherr;

 	ret = video_bmp_display(dev, (ulong)dst + 2, xpos, ypos, true);
 	if (ret)
 		goto splasherr;

 	return 0;

 splasherr:
 	free(dst);
 #endif
 	return 0;
 }

 static void setup_iomux_video(void)
 {
 	static const iomux_v3_cfg_t lcd_pads[] = {
 		MX53_PAD_LVDS0_TX3_P__LDB_LVDS0_TX3,
 		MX53_PAD_LVDS0_CLK_P__LDB_LVDS0_CLK,
 		MX53_PAD_LVDS0_TX2_P__LDB_LVDS0_TX2,
 		MX53_PAD_LVDS0_TX1_P__LDB_LVDS0_TX1,
 		MX53_PAD_LVDS0_TX0_P__LDB_LVDS0_TX0,
 	};

 	imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
 }

 static void setup_iomux_nand(void)
 {
 	static const iomux_v3_cfg_t nand_pads[] = {
 		NEW_PAD_CTRL(MX53_PAD_NANDF_WE_B__EMI_NANDF_WE_B,
 			     PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_RE_B__EMI_NANDF_RE_B,
 			     PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_CLE__EMI_NANDF_CLE,
 			     PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_ALE__EMI_NANDF_ALE,
 			     PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_WP_B__EMI_NANDF_WP_B,
 			     PAD_CTL_PUS_100K_UP),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_RB0__EMI_NANDF_RB_0,
 			     PAD_CTL_PUS_100K_UP),
 		NEW_PAD_CTRL(MX53_PAD_NANDF_CS0__EMI_NANDF_CS_0,
 			     PAD_CTL_DSE_HIGH),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA0__EMI_NANDF_D_0,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA1__EMI_NANDF_D_1,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA2__EMI_NANDF_D_2,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA3__EMI_NANDF_D_3,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA4__EMI_NANDF_D_4,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA5__EMI_NANDF_D_5,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA6__EMI_NANDF_D_6,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 		NEW_PAD_CTRL(MX53_PAD_PATA_DATA7__EMI_NANDF_D_7,
 			     PAD_CTL_DSE_HIGH | PAD_CTL_PKE),
 	};

 	imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads));
 }

 static void m53_set_clock(void)
 {
 	int ret;
 	const u32 ref_clk = MXC_HCLK;
 	const u32 dramclk = 400;
 	u32 cpuclk;

 	gpio_request(IMX_GPIO_NR(4, 0), "CPUCLK");

 	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX53_PAD_GPIO_10__GPIO4_0,
 					    PAD_CTL_DSE_HIGH | PAD_CTL_PKE));
 	gpio_direction_input(IMX_GPIO_NR(4, 0));

 	/* GPIO10 selects modules' CPU speed, 1 = 1200MHz ; 0 = 800MHz */
 	cpuclk = gpio_get_value(IMX_GPIO_NR(4, 0)) ? 1200 : 800;

 	ret = mxc_set_clock(ref_clk, cpuclk, MXC_ARM_CLK);
 	if (ret)
 		printf("CPU:   Switch CPU clock to %dMHz failed\n", cpuclk);

 	ret = mxc_set_clock(ref_clk, dramclk, MXC_PERIPH_CLK);
 	if (ret) {
 		printf("CPU:   Switch peripheral clock to %dMHz failed\n",
 		       dramclk);
 	}

 	ret = mxc_set_clock(ref_clk, dramclk, MXC_DDR_CLK);
 	if (ret)
 		printf("CPU:   Switch DDR clock to %dMHz failed\n", dramclk);
 }

 static void m53_set_nand(void)
 {
 	u32 i;

 	/* NAND flash is muxed on ATA pins */
 	setbits_le32(M4IF_BASE_ADDR + 0xc, M4IF_GENP_WEIM_MM_MASK);

 	/* Wait for Grant/Ack sequence (see EIM_CSnGCR2:MUX16_BYP_GRANT) */
 	for (i = 0x4; i < 0x94; i += 0x18) {
 		clrbits_le32(WEIM_BASE_ADDR + i,
 			     WEIM_GCR2_MUX16_BYP_GRANT_MASK);
 	}

 	mxc_set_clock(0, 33, MXC_NFC_CLK);
 	enable_nfc_clk(1);
 }

 int board_early_init_f(void)
 {
 	setup_iomux_uart();
 	setup_iomux_fec();
 	setup_iomux_nand();
 	setup_iomux_video();

 	m53_set_clock();

 	mxc_set_sata_internal_clock();

 	/* NAND clock @ 33MHz */
 	m53_set_nand();

 	return 0;
 }

 int board_init(void)
 {
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

 	return 0;
 }

 int checkboard(void)
 {
 	puts("Board: Menlosystems M53Menlo\n");

 	return 0;
 }

 /*
  * NAND SPL
  */
 #ifdef CONFIG_SPL_BUILD
 void spl_board_init(void)
 {
 	setup_iomux_nand();
 	m53_set_clock();
 	m53_set_nand();
 }

 u32 spl_boot_device(void)
 {
 	return BOOT_DEVICE_NAND;
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Menlosystems M53Menlo board
	*
	* Copyright (C) 2012-2017 Marek Vasut <marex@denx.de>
	* Copyright (C) 2014-2017 Olaf Mandel <o.mandel@menlosystems.com>
	*/

	#include <common.h>
	#include <dm.h>
	#include <init.h>
	#include <malloc.h>
	#include <asm/global_data.h>
	#include <asm/io.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/sys_proto.h>
	#include <asm/arch/crm_regs.h>
	#include <asm/arch/clock.h>
	#include <asm/arch/iomux-mx53.h>
	#include <asm/mach-imx/boot_mode.h>
	#include <asm/mach-imx/mx5_video.h>
	#include <asm/mach-imx/video.h>
	#include <asm/gpio.h>
	#include <asm/spl.h>
	#include <env.h>
	#include <fdt_support.h>
	#include <fsl_esdhc_imx.h>
	#include <gzip.h>
	#include <i2c.h>
	#include <ipu_pixfmt.h>
	#include <linux/bitops.h>
	#include <linux/errno.h>
	#include <linux/fb.h>
	#include <mmc.h>
	#include <netdev.h>
	#include <spl.h>
	#include <splash.h>
	#include <usb/ehci-ci.h>
	#include <video_console.h>

	DECLARE_GLOBAL_DATA_PTR;

	static u32 mx53_dram_size[2];

	phys_size_t board_get_usable_ram_top(phys_size_t total_size)
	{
	/*
	* WARNING: We must override get_effective_memsize() function here
	* to report only the size of the first DRAM bank. This is to make
	* U-Boot relocator place U-Boot into valid memory, that is, at the
	* end of the first DRAM bank. If we did not override this function
	* like so, U-Boot would be placed at the address of the first DRAM
	* bank + total DRAM size - sizeof(uboot), which in the setup where
	* each DRAM bank contains 512MiB of DRAM would result in placing
	* U-Boot into invalid memory area close to the end of the first
	* DRAM bank.
	*/
	return PHYS_SDRAM_2 + mx53_dram_size[1];
	}

	int dram_init(void)
	{
	mx53_dram_size[0] = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30);
	mx53_dram_size[1] = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30);

	gd->ram_size = mx53_dram_size[0] + mx53_dram_size[1];

	return 0;
	}

	int dram_init_banksize(void)
	{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = mx53_dram_size[0];

	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
	gd->bd->bi_dram[1].size = mx53_dram_size[1];

	return 0;
	}

	static void setup_iomux_uart(void)
	{
	static const iomux_v3_cfg_t uart_pads[] = {
	MX53_PAD_PATA_DMACK__UART1_RXD_MUX,
	MX53_PAD_PATA_DIOW__UART1_TXD_MUX,
	};

	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
	}

	static void setup_iomux_fec(void)
	{
	static const iomux_v3_cfg_t fec_pads[] = {
	/* MDIO pads */
	NEW_PAD_CTRL(MX53_PAD_FEC_MDIO__FEC_MDIO, PAD_CTL_HYS \|
	PAD_CTL_DSE_HIGH \| PAD_CTL_PUS_22K_UP \| PAD_CTL_ODE),
	NEW_PAD_CTRL(MX53_PAD_FEC_MDC__FEC_MDC, PAD_CTL_DSE_HIGH),

	/* FEC 0 pads */
	NEW_PAD_CTRL(MX53_PAD_FEC_CRS_DV__FEC_RX_DV,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_FEC_REF_CLK__FEC_TX_CLK,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_FEC_RX_ER__FEC_RX_ER,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_FEC_TX_EN__FEC_TX_EN, PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_FEC_RXD0__FEC_RDATA_0,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_FEC_RXD1__FEC_RDATA_1,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_FEC_TXD0__FEC_TDATA_0, PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_FEC_TXD1__FEC_TDATA_1, PAD_CTL_DSE_HIGH),

	/* FEC 1 pads */
	NEW_PAD_CTRL(MX53_PAD_KEY_COL0__FEC_RDATA_3,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_KEY_ROW0__FEC_TX_ER,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_KEY_COL1__FEC_RX_CLK,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_KEY_ROW1__FEC_COL,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_KEY_COL2__FEC_RDATA_2,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_KEY_ROW2__FEC_TDATA_2, PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_KEY_COL3__FEC_CRS,
	PAD_CTL_HYS \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_GPIO_19__FEC_TDATA_3, PAD_CTL_DSE_HIGH),
	};

	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
	}

	#ifdef CONFIG_FSL_ESDHC_IMX
	struct fsl_esdhc_cfg esdhc_cfg = {
	MMC_SDHC1_BASE_ADDR,
	};

	int board_mmc_getcd(struct mmc *mmc)
	{
	imx_iomux_v3_setup_pad(MX53_PAD_GPIO_1__GPIO1_1);
	gpio_direction_input(IMX_GPIO_NR(1, 1));

	return !gpio_get_value(IMX_GPIO_NR(1, 1));
	}

	#define SD_CMD_PAD_CTRL (PAD_CTL_HYS \| PAD_CTL_DSE_HIGH \| \
	PAD_CTL_PUS_100K_UP)
	#define SD_PAD_CTRL (PAD_CTL_HYS \| PAD_CTL_PUS_47K_UP \| \
	PAD_CTL_DSE_HIGH)

	int board_mmc_init(struct bd_info *bis)
	{
	static const iomux_v3_cfg_t sd1_pads[] = {
	NEW_PAD_CTRL(MX53_PAD_SD1_CMD__ESDHC1_CMD, SD_CMD_PAD_CTRL),
	NEW_PAD_CTRL(MX53_PAD_SD1_CLK__ESDHC1_CLK, SD_PAD_CTRL),
	NEW_PAD_CTRL(MX53_PAD_SD1_DATA0__ESDHC1_DAT0, SD_PAD_CTRL),
	NEW_PAD_CTRL(MX53_PAD_SD1_DATA1__ESDHC1_DAT1, SD_PAD_CTRL),
	NEW_PAD_CTRL(MX53_PAD_SD1_DATA2__ESDHC1_DAT2, SD_PAD_CTRL),
	NEW_PAD_CTRL(MX53_PAD_SD1_DATA3__ESDHC1_DAT3, SD_PAD_CTRL),
	};

	esdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);

	imx_iomux_v3_setup_multiple_pads(sd1_pads, ARRAY_SIZE(sd1_pads));

	return fsl_esdhc_initialize(bis, &esdhc_cfg);
	}
	#endif

	static void enable_lvds_clock(struct display_info_t const *dev, const u8 hclk)
	{
	static struct mxc_ccm_reg mxc_ccm = (struct mxc_ccm_reg )MXC_CCM_BASE;
	int ret;

	/* For ETM0430G0DH6 model, this must be enabled before the clock. */
	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);

	/*
	* Set LVDS clock to 33.28 MHz for the display. The PLL4 is set to
	* 233 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
	*/
	ret = mxc_set_clock(MXC_HCLK, hclk, MXC_LDB_CLK);
	if (ret)
	puts("IPU: Failed to configure LDB clock\n");

	/* Configure CCM_CSCMR2 */
	clrsetbits_le32(&mxc_ccm->cscmr2,
	(0x7 << 26) \| BIT(10) \| BIT(8),
	(0x5 << 26) \| BIT(10) \| BIT(8));

	/* Configure LDB_CTRL */
	writel(0x201, 0x53fa8008);
	}

	static void enable_lvds_etm0430g0dh6(struct display_info_t const *dev)
	{
	gpio_request(IMX_GPIO_NR(6, 0), "LCD");

	/* For ETM0430G0DH6 model, this must be enabled before the clock. */
	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);

	/*
	* Set LVDS clock to 9 MHz for the display. The PLL4 is set to
	* 63 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
	*/
	enable_lvds_clock(dev, 63);
	}

	static void enable_lvds_etm0700g0dh6(struct display_info_t const *dev)
	{
	gpio_request(IMX_GPIO_NR(6, 0), "LCD");

	/*
	* Set LVDS clock to 33.28 MHz for the display. The PLL4 is set to
	* 233 MHz, divided by 7 by setting CCM_CSCMR2 LDB_DI0_IPU_DIV=1 .
	*/
	enable_lvds_clock(dev, 233);

	/* For ETM0700G0DH6 model, this may be enabled after the clock. */
	gpio_direction_output(IMX_GPIO_NR(6, 0), 1);
	}

	static const char *lvds_compat_string;

	static int detect_lvds(struct display_info_t const *dev)
	{
	struct udevice idev, ibus;
	u8 touchid[23];
	u8 *touchptr = &touchid[0];
	int ret;

	ret = uclass_get_device_by_seq(UCLASS_I2C, 0, &ibus);
	if (ret)
	return 0;

	ret = dm_i2c_probe(ibus, 0x38, 0, &idev);
	if (ret)
	return 0;

	/* Touchscreen is at address 0x38, ID register is 0xbb. */
	ret = dm_i2c_read(idev, 0xbb, touchid, sizeof(touchid));
	if (ret)
	return 0;

	/* EP0430 prefixes the response with 0xbb, skip it. */
	if (*touchptr == 0xbb)
	touchptr++;

	/* Skip the 'EP' prefix. */
	touchptr += 2;

	ret = !memcmp(touchptr, &dev->mode.name[7], 4);
	if (ret)
	lvds_compat_string = dev->mode.name;

	return ret;
	}

	void board_preboot_os(void)
	{
	/* Power off the LCD to prevent awful color flicker */
	gpio_direction_output(IMX_GPIO_NR(6, 0), 0);
	}

	#if CONFIG_IS_ENABLED(OF_LIBFDT)
	int ft_board_setup(void blob, struct bd_info bd)
	{
	if (lvds_compat_string)
	do_fixup_by_path_string(blob, "/panel", "compatible",
	lvds_compat_string);

	return 0;
	}
	#endif

	struct display_info_t const displays[] = {
	{
	.bus = 0,
	.addr = 0,
	.detect = detect_lvds,
	.enable = enable_lvds_etm0430g0dh6,
	.pixfmt = IPU_PIX_FMT_RGB666,
	.mode = {
	.name = "edt,etm0430g0dh6",
	.refresh = 60,
	.xres = 480,
	.yres = 272,
	.pixclock = 111111, /* picosecond (9 MHz) */
	.left_margin = 2,
	.right_margin = 2,
	.upper_margin = 2,
	.lower_margin = 2,
	.hsync_len = 41,
	.vsync_len = 10,
	.sync = 0x40000000,
	.vmode = FB_VMODE_NONINTERLACED
	}
	}, {
	.bus = 0,
	.addr = 0,
	.detect = detect_lvds,
	.enable = enable_lvds_etm0700g0dh6,
	.pixfmt = IPU_PIX_FMT_RGB666,
	.mode = {
	.name = "edt,etm0700g0dh6",
	.refresh = 60,
	.xres = 800,
	.yres = 480,
	.pixclock = 30048, /* picosecond (33.28 MHz) */
	.left_margin = 40,
	.right_margin = 88,
	.upper_margin = 10,
	.lower_margin = 33,
	.hsync_len = 128,
	.vsync_len = 2,
	.sync = FB_SYNC_EXT,
	.vmode = FB_VMODE_NONINTERLACED
	}
	}
	};

	size_t display_count = ARRAY_SIZE(displays);

	#ifdef CONFIG_SPLASH_SCREEN
	static struct splash_location default_splash_locations[] = {
	{
	.name = "mmc_fs",
	.storage = SPLASH_STORAGE_MMC,
	.flags = SPLASH_STORAGE_FS,
	.devpart = "0:1",
	},
	};

	int splash_screen_prepare(void)
	{
	return splash_source_load(default_splash_locations,
	ARRAY_SIZE(default_splash_locations));
	}
	#endif

	int board_late_init(void)
	{
	#ifdef CONFIG_CMD_BMODE
	add_board_boot_modes(NULL);
	#endif

	#if defined(CONFIG_VIDEO_IPUV3)
	struct udevice *dev;
	int xpos, ypos, ret;
	char *s;
	void *dst;
	ulong addr, len;

	splash_get_pos(&xpos, &ypos);

	s = env_get("splashimage");
	if (!s)
	return 0;

	addr = hextoul(s, NULL);
	dst = malloc(CONFIG_VIDEO_LOGO_MAX_SIZE);
	if (!dst)
	return -ENOMEM;

	ret = splash_screen_prepare();
	if (ret < 0)
	goto splasherr;

	len = CONFIG_VIDEO_LOGO_MAX_SIZE;
	ret = gunzip(dst + 2, CONFIG_VIDEO_LOGO_MAX_SIZE - 2,
	(uchar *)addr, &len);
	if (ret) {
	printf("Error: no valid bmp or bmp.gz image at %lx\n", addr);
	goto splasherr;
	}

	ret = uclass_get_device(UCLASS_VIDEO, 0, &dev);
	if (ret)
	goto splasherr;

	ret = video_bmp_display(dev, (ulong)dst + 2, xpos, ypos, true);
	if (ret)
	goto splasherr;

	return 0;

	splasherr:
	free(dst);
	#endif
	return 0;
	}

	static void setup_iomux_video(void)
	{
	static const iomux_v3_cfg_t lcd_pads[] = {
	MX53_PAD_LVDS0_TX3_P__LDB_LVDS0_TX3,
	MX53_PAD_LVDS0_CLK_P__LDB_LVDS0_CLK,
	MX53_PAD_LVDS0_TX2_P__LDB_LVDS0_TX2,
	MX53_PAD_LVDS0_TX1_P__LDB_LVDS0_TX1,
	MX53_PAD_LVDS0_TX0_P__LDB_LVDS0_TX0,
	};

	imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
	}

	static void setup_iomux_nand(void)
	{
	static const iomux_v3_cfg_t nand_pads[] = {
	NEW_PAD_CTRL(MX53_PAD_NANDF_WE_B__EMI_NANDF_WE_B,
	PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_NANDF_RE_B__EMI_NANDF_RE_B,
	PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_NANDF_CLE__EMI_NANDF_CLE,
	PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_NANDF_ALE__EMI_NANDF_ALE,
	PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_NANDF_WP_B__EMI_NANDF_WP_B,
	PAD_CTL_PUS_100K_UP),
	NEW_PAD_CTRL(MX53_PAD_NANDF_RB0__EMI_NANDF_RB_0,
	PAD_CTL_PUS_100K_UP),
	NEW_PAD_CTRL(MX53_PAD_NANDF_CS0__EMI_NANDF_CS_0,
	PAD_CTL_DSE_HIGH),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA0__EMI_NANDF_D_0,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA1__EMI_NANDF_D_1,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA2__EMI_NANDF_D_2,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA3__EMI_NANDF_D_3,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA4__EMI_NANDF_D_4,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA5__EMI_NANDF_D_5,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA6__EMI_NANDF_D_6,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	NEW_PAD_CTRL(MX53_PAD_PATA_DATA7__EMI_NANDF_D_7,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE),
	};

	imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads));
	}

	static void m53_set_clock(void)
	{
	int ret;
	const u32 ref_clk = MXC_HCLK;
	const u32 dramclk = 400;
	u32 cpuclk;

	gpio_request(IMX_GPIO_NR(4, 0), "CPUCLK");

	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX53_PAD_GPIO_10__GPIO4_0,
	PAD_CTL_DSE_HIGH \| PAD_CTL_PKE));
	gpio_direction_input(IMX_GPIO_NR(4, 0));

	/* GPIO10 selects modules' CPU speed, 1 = 1200MHz ; 0 = 800MHz */
	cpuclk = gpio_get_value(IMX_GPIO_NR(4, 0)) ? 1200 : 800;

	ret = mxc_set_clock(ref_clk, cpuclk, MXC_ARM_CLK);
	if (ret)
	printf("CPU: Switch CPU clock to %dMHz failed\n", cpuclk);

	ret = mxc_set_clock(ref_clk, dramclk, MXC_PERIPH_CLK);
	if (ret) {
	printf("CPU: Switch peripheral clock to %dMHz failed\n",
	dramclk);
	}

	ret = mxc_set_clock(ref_clk, dramclk, MXC_DDR_CLK);
	if (ret)
	printf("CPU: Switch DDR clock to %dMHz failed\n", dramclk);
	}

	static void m53_set_nand(void)
	{
	u32 i;

	/* NAND flash is muxed on ATA pins */
	setbits_le32(M4IF_BASE_ADDR + 0xc, M4IF_GENP_WEIM_MM_MASK);

	/* Wait for Grant/Ack sequence (see EIM_CSnGCR2:MUX16_BYP_GRANT) */
	for (i = 0x4; i < 0x94; i += 0x18) {
	clrbits_le32(WEIM_BASE_ADDR + i,
	WEIM_GCR2_MUX16_BYP_GRANT_MASK);
	}

	mxc_set_clock(0, 33, MXC_NFC_CLK);
	enable_nfc_clk(1);
	}

	int board_early_init_f(void)
	{
	setup_iomux_uart();
	setup_iomux_fec();
	setup_iomux_nand();
	setup_iomux_video();

	m53_set_clock();

	mxc_set_sata_internal_clock();

	/* NAND clock @ 33MHz */
	m53_set_nand();

	return 0;
	}

	int board_init(void)
	{
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	return 0;
	}

	int checkboard(void)
	{
	puts("Board: Menlosystems M53Menlo\n");

	return 0;
	}

	/*
	* NAND SPL
	*/
	#ifdef CONFIG_SPL_BUILD
	void spl_board_init(void)
	{
	setup_iomux_nand();
	m53_set_clock();
	m53_set_nand();
	}

	u32 spl_boot_device(void)
	{
	return BOOT_DEVICE_NAND;
	}
	#endif