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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Renesas Electronics
+ * Copyright (C) Chris Brandt
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+
+#define RZA1_WDT_BASE	0xfcfe0000
+#define WTCSR		0x00
+#define WTCNT		0x02
+#define WRCSR		0x04
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_mem_size_base() != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+	/* Dummy read (must read WRCSR:WOVF at least once before clearing) */
+	readb(RZA1_WDT_BASE + WRCSR);
+
+	writew(0xa500, RZA1_WDT_BASE + WRCSR);
+	writew(0x5a5f, RZA1_WDT_BASE + WRCSR);
+	writew(0x5a00, RZA1_WDT_BASE + WTCNT);
+	writew(0xa578, RZA1_WDT_BASE + WTCSR);
+
+	for (;;)
+		asm volatile("wfi");
+}