1 files changed, 101 insertions, 0 deletions

diff --git a/arch/sparc64/prom/init.c b/arch/sparc64/prom/init.c
new file mode 100644
index 000000000000..817faae058cd
--- /dev/null
+++ b/arch/sparc64/prom/init.c
@@ -0,0 +1,101 @@
+/* $Id: init.c,v 1.10 1999/09/21 14:35:59 davem 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 <linux/ctype.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_cif_init(void *, void *);
+
+void __init prom_init(void *cif_handler, void *cif_stack)
+{
+        char buffer[80], *p;
+        int ints[3];
+        int node;
+        int i = 0;
+        int bufadjust;
+
+        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))
+                goto strange_version;
+
+        /*
+         * Version field is expected to be 'OBP xx.yy.zz date...'
+         * However, Sun can't stick to this format very well, so
+         * we need to check for 'OBP  xx.yy.zz date...' and adjust
+         * accordingly. -spot
+         */
+
+        if (strncmp (buffer, "OBP  ", 5))
+                bufadjust = 4;
+        else
+                bufadjust = 5;
+
+        p = buffer + bufadjust;
+        while (p && isdigit(*p) && i < 3) {
+                ints[i++] = simple_strtoul(p, NULL, 0);
+                if ((p = strchr(p, '.')) != NULL)
+                        p++;
+        }
+        if (i != 3)
+                goto strange_version;
+
+        prom_rev = ints[1];
+        prom_prev = (ints[0] << 16) | (ints[1] << 8) | ints[2];
+
+        printk ("PROMLIB: Sun IEEE Boot Prom %s\n", buffer + bufadjust);
+
+        prom_meminit();
+
+        /* Initialization successful. */
+        return;
+
+strange_version:
+        prom_printf ("Strange OBP version `%s'.\n", buffer);
+        prom_halt ();
+}