1 files changed, 139 insertions, 0 deletions

diff --git a/arch/sparc/prom/misc.c b/arch/sparc/prom/misc.c
new file mode 100644
index 000000000000..c840c2062342
--- /dev/null
+++ b/arch/sparc/prom/misc.c
@@ -0,0 +1,139 @@
+/* $Id: misc.c,v 1.18 2000/08/26 02:38:03 anton Exp $
+ * misc.c:  Miscellaneous prom functions that don't belong
+ *          anywhere else.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.h>
+#include <asm/system.h>
+
+extern void restore_current(void);
+
+DEFINE_SPINLOCK(prom_lock);
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void
+prom_reboot(char *bcommand)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&prom_lock, flags);
+        (*(romvec->pv_reboot))(bcommand);
+        /* Never get here. */
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void
+prom_feval(char *fstring)
+{
+        unsigned long flags;
+        if(!fstring || fstring[0] == 0)
+                return;
+        spin_lock_irqsave(&prom_lock, flags);
+        if(prom_vers == PROM_V0)
+                (*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);
+        else
+                (*(romvec->pv_fortheval.v2_eval))(fstring);
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* We want to do this more nicely some day. */
+extern void (*prom_palette)(int);
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+        extern void install_obp_ticker(void);
+        extern void install_linux_ticker(void);
+        unsigned long flags;
+
+        if(!serial_console && prom_palette)
+                prom_palette (1);
+        spin_lock_irqsave(&prom_lock, flags);
+        install_obp_ticker();
+        (*(romvec->pv_abort))();
+        restore_current();
+        install_linux_ticker();
+        spin_unlock_irqrestore(&prom_lock, flags);
+#ifdef CONFIG_SUN_AUXIO
+        set_auxio(AUXIO_LED, 0);
+#endif
+        if(!serial_console && prom_palette)
+                prom_palette (0);
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void
+prom_halt(void)
+{
+        unsigned long flags;
+again:
+        spin_lock_irqsave(&prom_lock, flags);
+        (*(romvec->pv_halt))();
+        /* Never get here. */
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+        goto again; /* PROM is out to get me -DaveM */
+}
+
+typedef void (*sfunc_t)(void);
+
+/* Set prom sync handler to call function 'funcp'. */
+void
+prom_setsync(sfunc_t funcp)
+{
+        if(!funcp) return;
+        *romvec->pv_synchook = 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 romvec->pv_romvers;
+}
+
+/* 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;
+}