Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / nds32 / cpu / n1213 / ag101 / cpu.c

diff --git a/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c b/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c
new file mode 100644 (file)
index 0000000..31d7271
--- /dev/null
+++ b/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/* CPU specific code */
+#include <common.h>
+#include <command.h>
+#include <watchdog.h>
+#include <asm/cache.h>
+
+#include <faraday/ftwdt010_wdt.h>
+
+/*
+ * cleanup_before_linux() is called just before we call linux
+ * it prepares the processor for linux
+ *
+ * we disable interrupt and caches.
+ */
+int cleanup_before_linux(void)
+{
+       disable_interrupts();
+
+#ifdef CONFIG_MMU
+       /* turn off I/D-cache */
+       icache_disable();
+       dcache_disable();
+
+       /* flush I/D-cache */
+       invalidate_icac();
+       invalidate_dcac();
+#endif
+
+       return 0;
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       disable_interrupts();
+
+       /*
+        * reset to the base addr of andesboot.
+        * currently no ROM loader at addr 0.
+        * do not use reset_cpu(0);
+        */
+#ifdef CONFIG_FTWDT010_WATCHDOG
+       /*
+        * workaround: if we use CONFIG_HW_WATCHDOG with ftwdt010, will lead
+        * automatic hardware reset when booting Linux.
+        * Please do not use CONFIG_HW_WATCHDOG and WATCHDOG_RESET() here.
+        */
+       ftwdt010_wdt_reset();
+       while (1)
+               ;
+#endif /* CONFIG_FTWDT010_WATCHDOG */
+
+       /*NOTREACHED*/
+}