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Improve macroification of VGA registers.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-06-21 00:58:43 +02:00
parent 6d5a33c9ac
commit d246fc0368
2 changed files with 54 additions and 18 deletions
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64
include/grub/vga.h
View file

@ -21,6 +21,7 @@
enum
{
GRUB_VGA_IO_ARX = 0x3c0,
GRUB_VGA_IO_SR_INDEX = 0x3c4,
GRUB_VGA_IO_SR_DATA = 0x3c5,
GRUB_VGA_IO_PIXEL_MASK = 0x3c6,
@ -41,7 +42,8 @@ enum
GRUB_VGA_CR_WIDTH = 0x01,
GRUB_VGA_CR_OVERFLOW = 0x07,
GRUB_VGA_CR_CELL_HEIGHT = 0x09,
GRUB_VGA_CR_CURSOR = 0x0a,
GRUB_VGA_CR_CURSOR_START = 0x0a,
GRUB_VGA_CR_CURSOR_END = 0x0b,
GRUB_VGA_CR_START_ADDR_HIGH_REGISTER = 0x0c,
GRUB_VGA_CR_START_ADDR_LOW_REGISTER = 0x0d,
GRUB_VGA_CR_CURSOR_ADDR_HIGH = 0x0e,
@ -64,36 +66,68 @@ enum
#define GRUB_VGA_CR_CELL_HEIGHT_LINE_COMPARE_MASK 0x40
#define GRUB_VGA_CR_CELL_HEIGHT_LINE_COMPARE_SHIFT 3
#define GRUB_VGA_CR_CURSOR_DISABLE (1 << 5)
enum
{
GRUB_VGA_CR_CURSOR_START_DISABLE = (1 << 5)
};
#define GRUB_VGA_CR_PITCH_DIVISOR 8
#define GRUB_VGA_CR_MODE_TIMING_ENABLE 0x80
#define GRUB_VGA_CR_MODE_BYTE_MODE 0x40
#define GRUB_VGA_CR_MODE_NO_HERCULES 0x02
#define GRUB_VGA_CR_MODE_NO_CGA 0x01
enum
{
GRUB_VGA_SR_MAP_MASK_REGISTER = 0x02,
GRUB_VGA_SR_MEMORY_MODE = 0x04,
GRUB_VGA_CR_MODE_NO_CGA = 0x01,
GRUB_VGA_CR_MODE_NO_HERCULES = 0x02,
GRUB_VGA_CR_MODE_BYTE_MODE = 0x40,
GRUB_VGA_CR_MODE_TIMING_ENABLE = 0x80
};
#define GRUB_VGA_SR_MEMORY_MODE_CHAIN4 8
#define GRUB_VGA_SR_MEMORY_MODE_NORMAL 0
enum
{
GRUB_VGA_SR_CLOCKING_MODE = 1,
GRUB_VGA_SR_MAP_MASK_REGISTER = 2,
GRUB_VGA_SR_MEMORY_MODE = 4,
};
enum
{
GRUB_VGA_GR_READ_MAP_REGISTER = 0x04,
GRUB_VGA_SR_CLOCKING_MODE_8_DOT_CLOCK = 1
};
enum
{
GRUB_VGA_SR_MEMORY_MODE_NORMAL = 0,
GRUB_VGA_SR_MEMORY_MODE_CHAIN4 = 8
};
enum
{
GRUB_VGA_GR_DATA_ROTATE = 3,
GRUB_VGA_GR_READ_MAP_REGISTER = 4,
GRUB_VGA_GR_MODE = 5,
GRUB_VGA_GR_GR6 = 6,
GRUB_VGA_GR_BITMASK = 8,
GRUB_VGA_GR_MAX
};
#define GRUB_VGA_GR_GR6_GRAPHICS_MODE 1
enum
{
GRUB_VGA_TEXT_TEXT_PLANE = 0,
GRUB_VGA_TEXT_ATTR_PLANE = 1,
GRUB_VGA_TEXT_FONT_PLANE = 2
};
#define GRUB_VGA_GR_MODE_256_COLOR 0x40
#define GRUB_VGA_GR_MODE_READ_MODE1 0x08
enum
{
GRUB_VGA_GR_GR6_GRAPHICS_MODE = 1,
GRUB_VGA_GR_GR6_MMAP_CGA = (3 << 2)
};
enum
{
GRUB_VGA_GR_MODE_READ_MODE1 = 0x08,
GRUB_VGA_GR_MODE_ODD_EVEN = 0x10,
GRUB_VGA_GR_MODE_256_COLOR = 0x40
};
static inline void
grub_vga_gr_write (grub_uint8_t val, grub_uint8_t addr)

8
term/i386/pc/vga_text.c
View file

@ -124,11 +124,13 @@ static void
grub_vga_text_setcursor (int on)
{
grub_uint8_t old;
old = grub_vga_cr_read (GRUB_VGA_CR_CURSOR);
old = grub_vga_cr_read (GRUB_VGA_CR_CURSOR_START);
if (on)
grub_vga_cr_write (old & ~GRUB_VGA_CR_CURSOR_DISABLE, GRUB_VGA_CR_CURSOR);
grub_vga_cr_write (old & ~GRUB_VGA_CR_CURSOR_START_DISABLE,
GRUB_VGA_CR_CURSOR_START);
else
grub_vga_cr_write (old | GRUB_VGA_CR_CURSOR_DISABLE, GRUB_VGA_CR_CURSOR);
grub_vga_cr_write (old | GRUB_VGA_CR_CURSOR_START_DISABLE,
GRUB_VGA_CR_CURSOR_START);
}
static grub_err_t