From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- include/grub/vga.h | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 include/grub/vga.h (limited to 'include/grub/vga.h') 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 . + */ + +#ifndef GRUB_VGA_HEADER +#define GRUB_VGA_HEADER 1 + +#ifndef GRUB_MACHINE_MIPS_QEMU_MIPS +#include +#else +#include +#define GRUB_MACHINE_PCI_IO_BASE 0xb4000000 +#endif + +#include + +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 -- cgit v1.2.3