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-rw-r--r--arch/mips/arc/cmdline.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/mips/arc/cmdline.c b/arch/mips/arc/cmdline.c
new file mode 100644
index 000000000000..fd604ef28823
--- /dev/null
+++ b/arch/mips/arc/cmdline.c
@@ -0,0 +1,108 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * cmdline.c: Kernel command line creation using ARCS argc/argv.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/sgialib.h>
+#include <asm/bootinfo.h>
+
+#undef DEBUG_CMDLINE
+
+char * __init prom_getcmdline(void)
+{
+ return arcs_cmdline;
+}
+
+static char *ignored[] = {
+ "ConsoleIn=",
+ "ConsoleOut=",
+ "SystemPartition=",
+ "OSLoader=",
+ "OSLoadPartition=",
+ "OSLoadFilename=",
+ "OSLoadOptions="
+};
+
+static char *used_arc[][2] = {
+ { "OSLoadPartition=", "root=" },
+ { "OSLoadOptions=", "" }
+};
+
+static char * __init move_firmware_args(char* cp)
+{
+ char *s;
+ int actr, i;
+
+ actr = 1; /* Always ignore argv[0] */
+
+ while (actr < prom_argc) {
+ for(i = 0; i < ARRAY_SIZE(used_arc); i++) {
+ int len = strlen(used_arc[i][0]);
+
+ if (!strncmp(prom_argv(actr), used_arc[i][0], len)) {
+ /* Ok, we want it. First append the replacement... */
+ strcat(cp, used_arc[i][1]);
+ cp += strlen(used_arc[i][1]);
+ /* ... and now the argument */
+ s = strstr(prom_argv(actr), "=");
+ if (s) {
+ s++;
+ strcpy(cp, s);
+ cp += strlen(s);
+ }
+ *cp++ = ' ';
+ break;
+ }
+ }
+ actr++;
+ }
+
+ return cp;
+}
+
+void __init prom_init_cmdline(void)
+{
+ char *cp;
+ int actr, i;
+
+ actr = 1; /* Always ignore argv[0] */
+
+ cp = arcs_cmdline;
+ /*
+ * Move ARC variables to the beginning to make sure they can be
+ * overridden by later arguments.
+ */
+ cp = move_firmware_args(cp);
+
+ while (actr < prom_argc) {
+ for (i = 0; i < ARRAY_SIZE(ignored); i++) {
+ int len = strlen(ignored[i]);
+
+ if (!strncmp(prom_argv(actr), ignored[i], len))
+ goto pic_cont;
+ }
+ /* Ok, we want it. */
+ strcpy(cp, prom_argv(actr));
+ cp += strlen(prom_argv(actr));
+ *cp++ = ' ';
+
+ pic_cont:
+ actr++;
+ }
+
+ if (cp != arcs_cmdline) /* get rid of trailing space */
+ --cp;
+ *cp = '\0';
+
+#ifdef DEBUG_CMDLINE
+ printk(KERN_DEBUG "prom cmdline: %s\n", arcs_cmdline);
+#endif
+}