patch-2.1.19 linux/arch/sparc64/prom/init.c

• Lines: 78
• Date: Mon Dec 30 11:59:59 1996
• Orig file: v2.1.18/linux/arch/sparc64/prom/init.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.18/linux/arch/sparc64/prom/init.c linux/arch/sparc64/prom/init.c
@@ -0,0 +1,77 @@
+/* $Id: init.c,v 1.1 1996/12/27 08:49:11 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 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.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;
+(long)(*prom_command)(char *, long, ...);
+
+/* 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();
+
+	node = prom_finddevice("/chosen");
+	if (!node || node == -1)
+		prom_halt();
+		
+	prom_stdin = prom_getint (node, "stdin");
+	prom_stdout = prom_getint (node, "stdout");
+
+	node = prom_finddevice("/openprom");
+	if (!node || node == -1)
+		prom_halt();
+		
+	prom_getstring (openprom_node, "version", buffer, sizeof (buffer));
+	if (strncmp (buffer, "OPB ", 4) || buffer[5] != '.' || buffer[7] != '.') {
+		prom_printf ("Strange OPB version.\n");
+		prom_halt ();
+	}
+	/* Version field is expected to be 'OPB x.y.z date...' */
+	
+	prom_rev = buffer[6] - '0';
+	prom_prev = ((buffer[4] - '0') << 16) | 
+		    ((buffer[6] - '0') << 8) |
+		    (buffer[8] - '0');
+		    
+	prom_meminit();
+
+	prom_ranges_init();
+
+	printk("PROMLIB: Sun IEEE Boot Prom %s\n",
+	       buffer + 4);
+
+	/* Initialization successful. */
+}