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

• Lines: 125
• Date: Mon Dec 30 11:59:59 1996
• Orig file: v2.1.18/linux/arch/sparc64/prom/misc.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.18/linux/arch/sparc64/prom/misc.c linux/arch/sparc64/prom/misc.c
@@ -0,0 +1,124 @@
+/* $Id: misc.c,v 1.1 1996/12/27 08:49:12 jj Exp $
+ * misc.c:  Miscellaneous prom functions that don't belong
+ *          anywhere else.
+ *
+ * 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/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void
+prom_reboot(char *bcommand)
+{
+	(*prom_command)("boot", P1275_ARG(0,P1275_ARG_IN_STRING)|
+				P1275_INOUT(1,0), bcommand);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void
+prom_feval(char *fstring)
+{
+	if(!fstring || fstring[0] == 0)
+		return;
+	(*prom_command)("interpret", P1275_ARG(0,P1275_ARG_IN_STRING)|
+				     P1275_INOUT(1,1), fstring);
+}
+
+/* We want to do this more nicely some day. */
+#ifdef CONFIG_SUN_CONSOLE
+extern void console_restore_palette(void);
+extern void set_palette(void);
+extern int serial_console;
+#endif
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+	extern void kernel_enter_debugger(void);
+	extern void install_obp_ticker(void);
+	extern void install_linux_ticker(void);
+	unsigned long flags;
+    
+	kernel_enter_debugger();
+#ifdef CONFIG_SUN_CONSOLE
+	if(!serial_console)
+		console_restore_palette ();
+#endif
+	install_obp_ticker();
+	save_flags(flags); cli();
+	(*prom_command)("enter", P1275_INOUT(0,0));
+	restore_flags(flags);
+	install_linux_ticker();
+#ifdef CONFIG_SUN_CONSOLE
+	if(!serial_console)
+		set_palette ();
+#endif
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void
+prom_halt(void)
+{
+	(*prom_command)("exit", P1275_INOUT(0,0));
+}
+
+typedef void (*sfunc_t)(void);
+
+/* Set prom sync handler to call function 'funcp'. */
+void
+prom_setsync(sfunc_t funcp)
+{
+	if(!funcp) return;
+	(*prom_command)("set-callback", P1275_ARG(0,P1275_IN_FUNCTION)|
+					P1275_INOUT(1,1), funcp);
+}
+
+/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
+ * format type.  'num_bytes' is the number of bytes that your idbuf
+ * has space for.  Returns 0xff on error.
+ */
+unsigned char
+prom_get_idprom(char *idbuf, int num_bytes)
+{
+	int len;
+
+	len = prom_getproplen(prom_root_node, "idprom");
+	if((len>num_bytes) || (len==-1)) return 0xff;
+	if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
+		return idbuf[0];
+
+	return 0xff;
+}
+
+/* Get the major prom version number. */
+int
+prom_version(void)
+{
+	return PROM_P1275;
+}
+
+/* Get the prom plugin-revision. */
+int
+prom_getrev(void)
+{
+	return prom_rev;
+}
+
+/* Get the prom firmware print revision. */
+int
+prom_getprev(void)
+{
+	return prom_prev;
+}