1 files changed, 104 insertions, 0 deletions

diff --git a/arch/mips/lemote/lm2e/prom.c b/arch/mips/lemote/lm2e/prom.c
new file mode 100644
index 000000000000..67312d7acf2a
--- /dev/null
+++ b/arch/mips/lemote/lm2e/prom.c
@@ -0,0 +1,104 @@
+/*
+ * Based on Ocelot Linux port, which is
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright 2003 ICT CAS
+ * Author: Michael Guo <guoyi@ict.ac.cn>
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * 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.
+ */
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+extern unsigned long bus_clock;
+extern unsigned long cpu_clock;
+extern unsigned int memsize, highmemsize;
+extern int putDebugChar(unsigned char byte);
+
+static int argc;
+/* pmon passes arguments in 32bit pointers */
+static int *arg;
+static int *env;
+
+const char *get_system_type(void)
+{
+        return "lemote-fulong";
+}
+
+void __init prom_init_cmdline(void)
+{
+        int i;
+        long l;
+
+        /* arg[0] is "g", the rest is boot parameters */
+        arcs_cmdline[0] = '\0';
+        for (i = 1; i < argc; i++) {
+                l = (long)arg[i];
+                if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
+                    >= sizeof(arcs_cmdline))
+                        break;
+                strcat(arcs_cmdline, ((char *)l));
+                strcat(arcs_cmdline, " ");
+        }
+}
+
+void __init prom_init(void)
+{
+        long l;
+        argc = fw_arg0;
+        arg = (int *)fw_arg1;
+        env = (int *)fw_arg2;
+
+        mips_machgroup = MACH_GROUP_LEMOTE;
+        mips_machtype = MACH_LEMOTE_FULONG;
+
+        prom_init_cmdline();
+
+        if ((strstr(arcs_cmdline, "console=")) == NULL)
+                strcat(arcs_cmdline, " console=ttyS0,115200");
+        if ((strstr(arcs_cmdline, "root=")) == NULL)
+                strcat(arcs_cmdline, " root=/dev/hda1");
+
+#define parse_even_earlier(res, option, p)                              \
+do {                                                                    \
+        if (strncmp(option, (char *)p, strlen(option)) == 0)            \
+                res = simple_strtol((char *)p + strlen(option"="),      \
+                                    NULL, 10);                          \
+} while (0)
+
+        l = (long)*env;
+        while (l != 0) {
+                parse_even_earlier(bus_clock, "busclock", l);
+                parse_even_earlier(cpu_clock, "cpuclock", l);
+                parse_even_earlier(memsize, "memsize", l);
+                parse_even_earlier(highmemsize, "highmemsize", l);
+                env++;
+                l = (long)*env;
+        }
+        if (memsize == 0)
+                memsize = 256;
+
+        pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n",
+               bus_clock, cpu_clock, memsize, highmemsize);
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void prom_putchar(char c)
+{
+        putDebugChar(c);
+}