GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/board/freescale/mx7ulp_evk/mx7ulp_evk.c

@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/mx7ulp-pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/mach-imx/boot_mode.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL	(PAD_CTL_PUS_UP)
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+
+	return 0;
+}
+
+static iomux_cfg_t const lpuart4_pads[] = {
+	MX7ULP_PAD_PTC3__LPUART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX7ULP_PAD_PTC2__LPUART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	mx7ulp_iomux_setup_multiple_pads(lpuart4_pads,
+					 ARRAY_SIZE(lpuart4_pads));
+}
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	const char *path;
+	int rc, nodeoff;
+
+	if (get_boot_device() == USB_BOOT) {
+		path = fdt_get_alias(blob, "mmc0");
+		if (!path) {
+			puts("Not found mmc0\n");
+			return 0;
+		}
+
+		nodeoff = fdt_path_offset(blob, path);
+		if (nodeoff < 0)
+			return 0;
+
+		printf("Found usdhc0 node\n");
+		if (fdt_get_property(blob, nodeoff, "vqmmc-supply",
+		    NULL) != NULL) {
+			rc = fdt_delprop(blob, nodeoff, "vqmmc-supply");
+			if (!rc) {
+				puts("Removed vqmmc-supply property\n");
+add:
+				rc = fdt_setprop(blob, nodeoff,
+						 "no-1-8-v", NULL, 0);
+				if (rc == -FDT_ERR_NOSPACE) {
+					rc = fdt_increase_size(blob, 32);
+					if (!rc)
+						goto add;
+				} else if (rc) {
+					printf("Failed to add no-1-8-v property, %d\n", rc);
+				} else {
+					puts("Added no-1-8-v property\n");
+				}
+			} else {
+				printf("Failed to remove vqmmc-supply property, %d\n", rc);
+			}
+		}
+	}
+
+	return 0;
+}
+#endif