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-rw-r--r--include/asm-generic/vga.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/asm-generic/vga.h b/include/asm-generic/vga.h
new file mode 100644
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--- /dev/null
+++ b/include/asm-generic/vga.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Access to VGA videoram
+ *
+ * (c) 1998 Martin Mares <mj@ucw.cz>
+ */
+#ifndef __ASM_GENERIC_VGA_H
+#define __ASM_GENERIC_VGA_H
+
+/*
+ * On most architectures that support VGA, we can just
+ * recalculate addresses and then access the videoram
+ * directly without any black magic.
+ *
+ * Everyone else needs to ioremap the address and use
+ * proper I/O accesses.
+ */
+#ifndef VGA_MAP_MEM
+#define VGA_MAP_MEM(x, s) (unsigned long)phys_to_virt(x)
+#endif
+
+#define vga_readb(x) (*(x))
+#define vga_writeb(x, y) (*(y) = (x))
+
+#endif /* _ASM_GENERIC_VGA_H */