init android origin source code

1 files changed, 28 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/sparc/prom/segment.c b/ANDROID_3.4.5/arch/sparc/prom/segment.c
new file mode 100644
index 00000000..86a663f1
--- /dev/null
+++ b/ANDROID_3.4.5/arch/sparc/prom/segment.c
@@ -0,0 +1,28 @@
+/*
+ * segment.c:  Prom routine to map segments in other contexts before
+ *             a standalone is completely mapped.  This is for sun4 and
+ *             sun4c architectures only.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Set physical segment 'segment' at virtual address 'vaddr' in
+ * context 'ctx'.
+ */
+void
+prom_putsegment(int ctx, unsigned long vaddr, int segment)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+}