summaryrefslogtreecommitdiff
path: root/arch/sparc/prom/console_32.c
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-13 15:08:24 +0530
committerSrikant Patnaik2015-01-13 15:08:24 +0530
commit97327692361306d1e6259021bc425e32832fdb50 (patch)
treefe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/sparc/prom/console_32.c
parent2d05a8f663478a44e088d122e0d62109bbc801d0 (diff)
parenta3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff)
downloadFOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.gz
FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.bz2
FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.zip
dirty fix to merging
Diffstat (limited to 'arch/sparc/prom/console_32.c')
-rw-r--r--arch/sparc/prom/console_32.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
new file mode 100644
index 00000000..1cfb50f4
--- /dev/null
+++ b/arch/sparc/prom/console_32.c
@@ -0,0 +1,56 @@
+/*
+ * 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 <linux/string.h>
+
+extern void restore_current(void);
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+static int prom_nbputchar(const char *buf)
+{
+ unsigned long flags;
+ int i = -1;
+
+ spin_lock_irqsave(&prom_lock, flags);
+ switch(prom_vers) {
+ case PROM_V0:
+ if ((*(romvec->pv_nbputchar))(*buf))
+ i = 1;
+ break;
+ case PROM_V2:
+ case PROM_V3:
+ if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout,
+ buf, 0x1) == 1)
+ i = 1;
+ break;
+ default:
+ break;
+ }
+ restore_current();
+ spin_unlock_irqrestore(&prom_lock, flags);
+ return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+void prom_console_write_buf(const char *buf, int len)
+{
+ while (len) {
+ int n = prom_nbputchar(buf);
+ if (n < 0)
+ continue;
+ len--;
+ buf++;
+ }
+}
+