DeforaOS/uKernel
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Code cleanup

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This commit is contained in:
Pierre Pronchery 2018-03-20 03:41:35 +01:00
parent 8adfbfbabd
commit 3403f067df
3 changed files with 31 additions and 9 deletions
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3
src/drivers/console.c
View File

@ -4,6 +4,9 @@
#include "console.h"
#if defined(__amd64__) || defined(__i386__)
# include "console/vga.c"
#endif

8
src/drivers/console.h
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@ -8,7 +8,13 @@
/* public */
/* types */
typedef struct _Console Console;
/* prototypes */
int console_init(void);
Console * console_init(void);
void console_clear(Console * console);
#endif /* !UKERNEL_DRIVERS_CONSOLE_H */

29
src/drivers/console/vga.c
View File

@ -13,6 +13,13 @@ typedef long int size_t;
#endif
/* types */
struct _Console
{
volatile uint16_t * buf;
};
/* constants */
#define VGA_ADDRESS_BASE 0xb8000
@ -20,23 +27,29 @@ typedef long int size_t;
#define VGA_TEXT_ROWS 25
/* variables */
static Console _vga_console;
/* functions */
/* console_init */
static void _init_clear(void);
int console_init(void)
Console * console_init(void)
{
_init_clear();
return 0;
_vga_console.buf = (uint16_t *)VGA_ADDRESS_BASE;
console_clear(&_vga_console);
return &_vga_console;
}
static void _init_clear(void)
/* useful */
/* console_clear */
void console_clear(Console * console)
{
uint16_t * buf = (uint16_t *)VGA_ADDRESS_BASE;
size_t row;
size_t col;
for(row = 0; row < VGA_TEXT_ROWS; row++)
for(col = 0; col < VGA_TEXT_COLUMNS; col++)
buf[row * VGA_TEXT_COLUMNS + col] = (' ' | (0x00 << 8));
console->buf[row * VGA_TEXT_COLUMNS + col]
= (' ' | (0x00 << 8));
}