1 files changed, 79 insertions, 0 deletions
diff --git a/arch/sparc64/prom/init.c b/arch/sparc64/prom/init.c
new file mode 100644
index 000000000..7dcef7642
--- /dev/null
+++ b/arch/sparc64/prom/init.c
@@ -0,0 +1,79 @@
+/* $Id: init.c,v 1.7 1997/03/24 17:43:59 jj Exp $
+ * init.c:  Initialize internal variables used by the PROM
+ *          library functions.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+enum prom_major_version prom_vers;
+unsigned int prom_rev, prom_prev;
+
+/* The root node of the prom device tree. */
+int prom_root_node;
+int prom_stdin, prom_stdout;
+int prom_chosen_node;
+
+/* You must call prom_init() before you attempt to use any of the
+ * routines in the prom library.  It returns 0 on success, 1 on
+ * failure.  It gets passed the pointer to the PROM vector.
+ */
+
+extern void prom_meminit(void);
+extern void prom_ranges_init(void);
+extern void prom_cif_init(void *, void *);
+
+__initfunc(void prom_init(void *cif_handler, void *cif_stack))
+{
+	char buffer[80];
+	int node;
+	
+	prom_vers = PROM_P1275;
+	
+	prom_cif_init(cif_handler, cif_stack);
+
+	prom_root_node = prom_getsibling(0);
+	if((prom_root_node == 0) || (prom_root_node == -1))
+		prom_halt();
+
+	prom_chosen_node = prom_finddevice("/chosen");
+	if (!prom_chosen_node || prom_chosen_node == -1)
+		prom_halt();
+		
+	prom_stdin = prom_getint (prom_chosen_node, "stdin");
+	prom_stdout = prom_getint (prom_chosen_node, "stdout");
+
+	node = prom_finddevice("/openprom");
+	if (!node || node == -1)
+		prom_halt();
+		
+	prom_getstring (node, "version", buffer, sizeof (buffer));
+	
+	prom_printf ("\n");
+	
+	if (strncmp (buffer, "OBP ", 4) || buffer[5] != '.' || buffer[7] != '.') {
+		prom_printf ("Strange OBP version `%s'.\n", buffer);
+		prom_halt ();
+	}
+	/* Version field is expected to be 'OBP x.y.z date...' */
+	
+	prom_rev = buffer[6] - '0';
+	prom_prev = ((buffer[4] - '0') << 16) | 
+		    ((buffer[6] - '0') << 8) |
+		    (buffer[8] - '0');
+		    
+	printk ("PROMLIB: Sun IEEE Boot Prom %s\n", buffer + 4);
+	
+	prom_meminit();
+
+	prom_ranges_init();
+
+	/* Initialization successful. */
+}