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authorRoman Yeryomin <roman@advem.lv>2012-09-13 00:40:35 +0300
committerRoman Yeryomin <roman@advem.lv>2012-12-03 00:13:21 +0200
commit5deb3317cb51ac52de922bb55f8492624018906d (patch)
treec2fbe6346699d9bb0f2100490c3029519bb8fde8 /target/linux/realtek/files/arch/rlx/include/asm/vga.h
parent0239d37124f9184b478a42de8a7fa1bc85a6a6fe (diff)
Add realtek target files
Signed-off-by: Roman Yeryomin <roman@advem.lv>
Diffstat (limited to 'target/linux/realtek/files/arch/rlx/include/asm/vga.h')
-rw-r--r--target/linux/realtek/files/arch/rlx/include/asm/vga.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/realtek/files/arch/rlx/include/asm/vga.h b/target/linux/realtek/files/arch/rlx/include/asm/vga.h
new file mode 100644
index 000000000..f4cff7e4f
--- /dev/null
+++ b/target/linux/realtek/files/arch/rlx/include/asm/vga.h
@@ -0,0 +1,47 @@
+/*
+ * Access to VGA videoram
+ *
+ * (c) 1998 Martin Mares <mj@ucw.cz>
+ */
+#ifndef _ASM_VGA_H
+#define _ASM_VGA_H
+
+#include <asm/byteorder.h>
+
+/*
+ * On the PC, we can just recalculate addresses and then
+ * access the videoram directly without any black magic.
+ */
+
+#define VGA_MAP_MEM(x, s) (0xb0000000L + (unsigned long)(x))
+
+#define vga_readb(x) (*(x))
+#define vga_writeb(x, y) (*(y) = (x))
+
+#define VT_BUF_HAVE_RW
+/*
+ * These are only needed for supporting VGA or MDA text mode, which use little
+ * endian byte ordering.
+ * In other cases, we can optimize by using native byte ordering and
+ * <linux/vt_buffer.h> has already done the right job for us.
+ */
+
+#undef scr_writew
+#undef scr_readw
+
+static inline void scr_writew(u16 val, volatile u16 *addr)
+{
+ *addr = cpu_to_le16(val);
+}
+
+static inline u16 scr_readw(volatile const u16 *addr)
+{
+ return le16_to_cpu(*addr);
+}
+
+#define scr_memcpyw(d, s, c) memcpy(d, s, c)
+#define scr_memmovew(d, s, c) memmove(d, s, c)
+#define VT_BUF_HAVE_MEMCPYW
+#define VT_BUF_HAVE_MEMMOVEW
+
+#endif /* _ASM_VGA_H */