Add i.MX7D based Meerkat96 board support

The Meerkat96 board, based on the NXP i.MX7D SoC, is a member of
96Boards community and complies with all Consumer Edition board
specifications.

https://www.novtech.com/products/meerkat96.html
https://www.96boards.org/product/imx7-96/

The initial supported/tested devices include:
 - Debug serial
 - SD
 - USB Host (with Ethernet)

With these support, it's good enough for loading Linux Kernel from SD or
Ethernet over USB.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/board/novtech/meerkat96/meerkat96.c b/board/novtech/meerkat96/meerkat96.c
new file mode 100644
index 0000000000..5fb4d43997
--- /dev/null
+++ b/board/novtech/meerkat96/meerkat96.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Linaro Ltd.
+ * Copyright (C) 2016 NXP Semiconductors
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx7-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/io.h>
+#include <common.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL  (PAD_CTL_DSE_3P3V_49OHM | \
+			PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const meerkat96_pads[] = {
+	/* UART6 as debug serial */
+	MX7D_PAD_SD1_CD_B__UART6_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX7D_PAD_SD1_WP__UART6_DCE_TX   | MUX_PAD_CTRL(UART_PAD_CTRL),
+	/* WDOG1 for reset */
+	MX7D_PAD_GPIO1_IO00__WDOG1_WDOG_B | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+int dram_init(void)
+{
+	gd->ram_size = PHYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	imx_iomux_v3_setup_multiple_pads(meerkat96_pads,
+					 ARRAY_SIZE(meerkat96_pads));
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	char *mode;
+
+	if (IS_ENABLED(CONFIG_ARMV7_BOOT_SEC_DEFAULT))
+		mode = "secure";
+	else
+		mode = "non-secure";
+
+	printf("Board: i.MX7D Meerkat96 in %s mode\n", mode);
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	set_wdog_reset((struct wdog_regs *)WDOG1_BASE_ADDR);
+
+	return 0;
+}