init commit via android 4.4 uboot

1 files changed, 112 insertions, 0 deletions

diff --git a/common/cmd_cache.c b/common/cmd_cache.c
new file mode 100755
index 0000000..6c250bc
--- /dev/null
+++ b/common/cmd_cache.c
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Cache support: switch on or off, get status
+ */
+#include <common.h>
+#include <command.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_CACHE)
+
+static int on_off (const char *);
+
+int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	switch (argc) {
+	case 2:			/* on / off	*/
+		switch (on_off(argv[1])) {
+#if 0	/* prevented by varargs handling; FALLTROUGH is harmless, too */
+		default: printf ("Usage:\n%s\n", cmdtp->usage);
+			return;
+#endif
+		case 0:	icache_disable();
+			break;
+		case 1:	icache_enable ();
+			break;
+		}
+		/* FALL TROUGH */
+	case 1:			/* get status */
+		printf ("Instruction Cache is %s\n",
+			icache_status() ? "ON" : "OFF");
+		return 0;
+	default:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	return 0;
+}
+
+int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	switch (argc) {
+	case 2:			/* on / off	*/
+		switch (on_off(argv[1])) {
+#if 0	/* prevented by varargs handling; FALLTROUGH is harmless, too */
+		default: printf ("Usage:\n%s\n", cmdtp->usage);
+			return;
+#endif
+		case 0:	dcache_disable();
+			break;
+		case 1:	dcache_enable ();
+			break;
+		}
+		/* FALL TROUGH */
+	case 1:			/* get status */
+		printf ("Data (writethrough) Cache is %s\n",
+			dcache_status() ? "ON" : "OFF");
+		return 0;
+	default:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	return 0;
+
+}
+
+static int on_off (const char *s)
+{
+	if (strcmp(s, "on") == 0) {
+		return (1);
+	} else if (strcmp(s, "off") == 0) {
+		return (0);
+	}
+	return (-1);
+}
+
+
+U_BOOT_CMD(
+	icache,   2,   1,     do_icache,
+	"icache  - enable or disable instruction cache\n",
+	"[on, off]\n"
+	"    - enable or disable instruction cache\n"
+);
+
+U_BOOT_CMD(
+	dcache,   2,   1,     do_dcache,
+	"dcache  - enable or disable data cache\n",
+	"[on, off]\n"
+	"    - enable or disable data (writethrough) cache\n"
+);
+
+#endif	/* CFG_CMD_CACHE */