1 files changed, 98 insertions, 0 deletions

diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
new file mode 100644
index 000000000000..b3075d73fc19
--- /dev/null
+++ b/arch/sparc/prom/console_32.c
@@ -0,0 +1,98 @@
+/*
+ * console.c: Routines that deal with sending and receiving IO
+ *            to/from the current console device using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Pete Zaitcev <zaitcev@yahoo.com>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <linux/string.h>
+
+extern void restore_current(void);
+
+/* Non blocking get character from console input device, returns -1
+ * if no input was taken.  This can be used for polling.
+ */
+int
+prom_nbgetchar(void)
+{
+        static char inc;
+        int i = -1;
+        unsigned long flags;
+
+        spin_lock_irqsave(&prom_lock, flags);
+        switch(prom_vers) {
+        case PROM_V0:
+                i = (*(romvec->pv_nbgetchar))();
+                break;
+        case PROM_V2:
+        case PROM_V3:
+                if( (*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin , &inc, 0x1) == 1) {
+                        i = inc;
+                } else {
+                        i = -1;
+                }
+                break;
+        default:
+                i = -1;
+                break;
+        };
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+        return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+int
+prom_nbputchar(char c)
+{
+        static char outc;
+        unsigned long flags;
+        int i = -1;
+
+        spin_lock_irqsave(&prom_lock, flags);
+        switch(prom_vers) {
+        case PROM_V0:
+                i = (*(romvec->pv_nbputchar))(c);
+                break;
+        case PROM_V2:
+        case PROM_V3:
+                outc = c;
+                if( (*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, &outc, 0x1) == 1)
+                        i = 0;
+                else
+                        i = -1;
+                break;
+        default:
+                i = -1;
+                break;
+        };
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+        return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+/* Blocking version of get character routine above. */
+char
+prom_getchar(void)
+{
+        int character;
+        while((character = prom_nbgetchar()) == -1) ;
+        return (char) character;
+}
+
+/* Blocking version of put character routine above. */
+void
+prom_putchar(char c)
+{
+        while(prom_nbputchar(c) == -1) ;
+        return;
+}