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Diffstat (limited to 'arch/mips/gt64120/momenco_ocelot/prom.c')
-rw-r--r--arch/mips/gt64120/momenco_ocelot/prom.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/mips/gt64120/momenco_ocelot/prom.c b/arch/mips/gt64120/momenco_ocelot/prom.c
new file mode 100644
index 00000000000..8677b6d3ada
--- /dev/null
+++ b/arch/mips/gt64120/momenco_ocelot/prom.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * 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>
+#include <asm/pmon.h>
+
+struct callvectors* debug_vectors;
+
+extern unsigned long gt64120_base;
+
+const char *get_system_type(void)
+{
+ return "Momentum Ocelot";
+}
+
+/* [jsun@junsun.net] PMON passes arguments in C main() style */
+void __init prom_init(void)
+{
+ int argc = fw_arg0;
+ char **arg = (char **) fw_arg1;
+ char **env = (char **) fw_arg2;
+ struct callvectors *cv = (struct callvectors *) fw_arg3;
+ uint32_t tmp;
+ int i;
+
+ /* save the PROM vectors for debugging use */
+ debug_vectors = cv;
+
+ /* arg[0] is "g", the rest is boot parameters */
+ arcs_cmdline[0] = '\0';
+ for (i = 1; i < argc; i++) {
+ if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
+ >= sizeof(arcs_cmdline))
+ break;
+ strcat(arcs_cmdline, arg[i]);
+ strcat(arcs_cmdline, " ");
+ }
+
+ mips_machgroup = MACH_GROUP_MOMENCO;
+ mips_machtype = MACH_MOMENCO_OCELOT;
+
+ while (*env) {
+ if (strncmp("gtbase", *env, 6) == 0) {
+ gt64120_base = simple_strtol(*env + strlen("gtbase="),
+ NULL, 16);
+ break;
+ }
+ *env++;
+ }
+
+ debug_vectors->printf("Booting Linux kernel...\n");
+
+ /* All the boards have at least 64MiB. If there's more, we
+ detect and register it later */
+ add_memory_region(0, 64 << 20, BOOT_MEM_RAM);
+}
+
+unsigned long __init prom_free_prom_memory(void)
+{
+ return 0;
+}