1 files changed, 129 insertions, 0 deletions
diff --git a/include/grub/vga.h b/include/grub/vga.h
new file mode 100644
index 0000000..1d8449c
--- /dev/null
+++ b/include/grub/vga.h
@@ -0,0 +1,129 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_VGA_HEADER
+#define GRUB_VGA_HEADER	1
+
+#ifndef GRUB_MACHINE_MIPS_QEMU_MIPS
+#include <grub/pci.h>
+#else
+#include <grub/cpu/io.h>
+#define GRUB_MACHINE_PCI_IO_BASE  0xb4000000
+#endif
+
+#include <grub/vgaregs.h>
+
+static inline void
+grub_vga_gr_write (grub_uint8_t val, grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_GR_INDEX);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_GR_DATA);
+}
+
+static inline grub_uint8_t
+grub_vga_gr_read (grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_GR_INDEX);
+  return grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_GR_DATA);
+}
+
+static inline void
+grub_vga_cr_write (grub_uint8_t val, grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_INDEX);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_DATA);
+}
+
+static inline grub_uint8_t
+grub_vga_cr_read (grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_INDEX);
+  return grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_DATA);
+}
+
+static inline void
+grub_vga_cr_bw_write (grub_uint8_t val, grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_BW_INDEX);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_BW_DATA);
+}
+
+static inline grub_uint8_t
+grub_vga_cr_bw_read (grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_BW_INDEX);
+  return grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_CR_BW_DATA);
+}
+
+static inline void
+grub_vga_sr_write (grub_uint8_t val, grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_SR_INDEX);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_SR_DATA);
+}
+
+static inline grub_uint8_t
+grub_vga_sr_read (grub_uint8_t addr)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_SR_INDEX);
+  return grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_SR_DATA);
+}
+
+static inline void
+grub_vga_palette_read (grub_uint8_t addr, grub_uint8_t *r, grub_uint8_t *g,
+		       grub_uint8_t *b)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_READ_INDEX);
+  *r = grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+  *g = grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+  *b = grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+}
+
+static inline void
+grub_vga_palette_write (grub_uint8_t addr, grub_uint8_t r, grub_uint8_t g,
+			grub_uint8_t b)
+{
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_WRITE_INDEX);
+  grub_outb (r, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+  grub_outb (g, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+  grub_outb (b, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_PALLETTE_DATA);
+}
+
+static inline void
+grub_vga_write_arx (grub_uint8_t val, grub_uint8_t addr)
+{
+  grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_INPUT_STATUS1_REGISTER);
+  grub_inb (GRUB_MACHINE_PCI_IO_BASE + 0x3ba);
+
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX);
+  grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX_READ);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX);
+}
+
+static inline grub_uint8_t
+grub_vga_read_arx (grub_uint8_t addr)
+{
+  grub_uint8_t val;
+  grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_INPUT_STATUS1_REGISTER);
+  grub_outb (addr, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX);
+  val = grub_inb (GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX_READ);
+  grub_outb (val, GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_ARX);
+  return val;
+}
+
+#endif