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

source/bootloader/u-boot-2020.01/board/freescale/m5272c3/m5272c3.c

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+#include <common.h>
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard (void) {
+	puts ("Board: ");
+	puts ("Freescale MCF5272C3 EVB\n");
+	return 0;
+	};
+
+int dram_init(void)
+{
+	sdramctrl_t * sdp = (sdramctrl_t *)(MMAP_SDRAM);
+
+	out_be16(&sdp->sdram_sdtr, 0xf539);
+	out_be16(&sdp->sdram_sdcr, 0x4211);
+
+	/* Dummy write to start SDRAM */
+	*((volatile unsigned long *)0) = 0;
+
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+
+	return 0;
+	};
+
+int testdram (void) {
+	/* TODO: XXX XXX XXX */
+	printf ("DRAM test not implemented!\n");
+
+	return (0);
+}