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authorKevin2014-11-15 09:58:27 +0800
committerKevin2014-11-15 09:58:27 +0800
commit392e8802486cb573b916e746010e141a75f507e6 (patch)
tree50029aca02c81f087b90336e670b44e510782330 /ANDROID_3.4.5/arch/sparc/prom/console_64.c
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init android origin source code
Diffstat (limited to 'ANDROID_3.4.5/arch/sparc/prom/console_64.c')
-rw-r--r--ANDROID_3.4.5/arch/sparc/prom/console_64.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/arch/sparc/prom/console_64.c b/ANDROID_3.4.5/arch/sparc/prom/console_64.c
new file mode 100644
index 00000000..f95edcc5
--- /dev/null
+++ b/ANDROID_3.4.5/arch/sparc/prom/console_64.c
@@ -0,0 +1,45 @@
+/* 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@davemloft.net)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <linux/string.h>
+
+static int __prom_console_write_buf(const char *buf, int len)
+{
+ unsigned long args[7];
+ int ret;
+
+ args[0] = (unsigned long) "write";
+ args[1] = 3;
+ args[2] = 1;
+ args[3] = (unsigned int) prom_stdout;
+ args[4] = (unsigned long) buf;
+ args[5] = (unsigned int) len;
+ args[6] = (unsigned long) -1;
+
+ p1275_cmd_direct(args);
+
+ ret = (int) args[6];
+ if (ret < 0)
+ return -1;
+ return ret;
+}
+
+void prom_console_write_buf(const char *buf, int len)
+{
+ while (len) {
+ int n = __prom_console_write_buf(buf, len);
+ if (n < 0)
+ continue;
+ len -= n;
+ buf += len;
+ }
+}