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Make cursor positioning work by using both halves of the 

VGA cursor position register.
   
Have vga_scroll_up() and vga_clear_line() present row/column
arguments to the VIDEO() macro in the right order.
       
Signed-off-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>

-This line, and those below, will be ignored--

M    libpayload/drivers/vga.c


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3186 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jonathan A. Kollasch 2008-03-22 15:27:26 +00:00 committed by Jordan Crouse
parent 661e380a75
commit b0e3f39a39
1 changed files with 4 additions and 4 deletions
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8
payloads/libpayload/drivers/vga.c
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@ -64,7 +64,7 @@ static void vga_get_cursor_pos(void)
unsigned int addr;
addr = ((unsigned int)crtc_read(0x0E)) << 8;
addr += crtc_read(0x0E);
addr += crtc_read(0x0F);
cursorx = addr % WIDTH;
cursory = addr / WIDTH;
@ -93,7 +93,7 @@ static void vga_fixup_cursor(void)
addr = cursorx + (WIDTH * cursory);
crtc_write(addr >> 8, 0x0E);
crtc_write(addr, 0x0E);
crtc_write(addr, 0x0F);
}
void vga_cursor_enable(int state)
@ -115,7 +115,7 @@ void vga_cursor_enable(int state)
void vga_clear_line(uint8_t row, uint8_t ch, uint8_t attr)
{
int col;
uint16_t *ptr = VIDEO(0, row);
uint16_t *ptr = VIDEO(row, 0);
for (col = 0; col < WIDTH; col++)
ptr[col] = ((attr & 0xFF) << 8) | (ch & 0xFF);
@ -123,7 +123,7 @@ void vga_clear_line(uint8_t row, uint8_t ch, uint8_t attr)
static void vga_scroll_up(void)
{
uint16_t *src = VIDEO(0, 1);
uint16_t *src = VIDEO(1, 0);
uint16_t *dst = VIDEO(0, 0);
int i;