X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=common%2Fcmd_cache.c;h=37ab345cb6c17ab059015010e9be6750ac84064e;hb=f8b7e1be7a127c25203ad5807b6f85de6a599a3d;hp=675d43fa1877cc8320d3684b17caaf6cf23b295f;hpb=375c2c9e57ea5b8d678475379378f4774aa9cb88;p=karo-tx-uboot.git

diff --git a/common/cmd_cache.c b/common/cmd_cache.c
index 675d43fa18..37ab345cb6 100644
--- a/common/cmd_cache.c
+++ b/common/cmd_cache.c
@@ -2,23 +2,7 @@
  * (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
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -26,87 +10,97 @@
  */
 #include <common.h>
 #include <command.h>
+#include <linux/compiler.h>
 
-#if defined(CONFIG_CMD_CACHE)
+static int parse_argv(const char *);
 
-static int on_off (const char *);
+void __weak invalidate_icache_all(void)
+{
+	/* please define arch specific invalidate_icache_all */
+	puts("No arch specific invalidate_icache_all available!\n");
+}
 
-int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+static int do_icache(cmd_tbl_t *cmdtp, int flag, int argc, char * const 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();
+		switch (parse_argv(argv[1])) {
+		case 0:
+			icache_disable();
 			break;
-		case 1:	icache_enable ();
+		case 1:
+			icache_enable();
+			break;
+		case 2:
+			invalidate_icache_all();
 			break;
 		}
-		/* FALL TROUGH */
+		break;
 	case 1:			/* get status */
-		printf ("Instruction Cache is %s\n",
+		printf("Instruction Cache is %s\n",
 			icache_status() ? "ON" : "OFF");
 		return 0;
 	default:
-		printf ("Usage:\n%s\n", cmdtp->usage);
-		return 1;
+		return CMD_RET_USAGE;
 	}
 	return 0;
 }
 
-int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+void __weak flush_dcache_all(void)
+{
+	puts("No arch specific flush_dcache_all available!\n");
+	/* please define arch specific flush_dcache_all */
+}
+
+static int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const 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();
+	case 2:			/* on / off */
+		switch (parse_argv(argv[1])) {
+		case 0:
+			dcache_disable();
+			break;
+		case 1:
+			dcache_enable();
 			break;
-		case 1:	dcache_enable ();
+		case 2:
+			flush_dcache_all();
 			break;
 		}
-		/* FALL TROUGH */
+		break;
 	case 1:			/* get status */
-		printf ("Data (writethrough) Cache is %s\n",
+		printf("Data (writethrough) Cache is %s\n",
 			dcache_status() ? "ON" : "OFF");
 		return 0;
 	default:
-		printf ("Usage:\n%s\n", cmdtp->usage);
-		return 1;
+		return CMD_RET_USAGE;
 	}
 	return 0;
-
 }
 
-static int on_off (const char *s)
+static int parse_argv(const char *s)
 {
-	if (strcmp(s, "on") == 0) {
-		return (1);
-	} else if (strcmp(s, "off") == 0) {
-		return (0);
-	}
-	return (-1);
+	if (strcmp(s, "flush") == 0)
+		return 2;
+	else 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"
+	"enable or disable instruction cache",
+	"[on, off, flush]\n"
+	"    - enable, disable, or flush instruction cache"
 );
 
 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"
+	"enable or disable data cache",
+	"[on, off, flush]\n"
+	"    - enable, disable, or flush data (writethrough) cache"
 );
-
-#endif