Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / cmd_cache.c

diff --git a/qemu/roms/u-boot/common/cmd_cache.c b/qemu/roms/u-boot/common/cmd_cache.c
new file mode 100644 (file)
index 0000000..602feca
--- /dev/null
+++ b/qemu/roms/u-boot/common/cmd_cache.c
@@ -0,0 +1,106 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * Cache support: switch on or off, get status
+ */
+#include <common.h>
+#include <command.h>
+#include <linux/compiler.h>
+
+static int parse_argv(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 * const argv[])
+{
+       switch (argc) {
+       case 2:                 /* on / off     */
+               switch (parse_argv(argv[1])) {
+               case 0:
+                       icache_disable();
+                       break;
+               case 1:
+                       icache_enable();
+                       break;
+               case 2:
+                       invalidate_icache_all();
+                       break;
+               }
+               break;
+       case 1:                 /* get status */
+               printf("Instruction Cache is %s\n",
+                       icache_status() ? "ON" : "OFF");
+               return 0;
+       default:
+               return CMD_RET_USAGE;
+       }
+       return 0;
+}
+
+void __weak flush_dcache_all(void)
+{
+       puts("No arch specific flush_dcache_all available!\n");
+       /* please define arch specific flush_dcache_all */
+}
+
+int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       switch (argc) {
+       case 2:                 /* on / off */
+               switch (parse_argv(argv[1])) {
+               case 0:
+                       dcache_disable();
+                       break;
+               case 1:
+                       dcache_enable();
+                       break;
+               case 2:
+                       flush_dcache_all();
+                       break;
+               }
+               break;
+       case 1:                 /* get status */
+               printf("Data (writethrough) Cache is %s\n",
+                       dcache_status() ? "ON" : "OFF");
+               return 0;
+       default:
+               return CMD_RET_USAGE;
+       }
+       return 0;
+}
+
+static int parse_argv(const char *s)
+{
+       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,
+       "enable or disable instruction cache",
+       "[on, off, flush]\n"
+       "    - enable, disable, or flush instruction cache"
+);
+
+U_BOOT_CMD(
+       dcache,   2,   1,     do_dcache,
+       "enable or disable data cache",
+       "[on, off, flush]\n"
+       "    - enable, disable, or flush data (writethrough) cache"
+);