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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>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3498 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jonathan A. Kollasch 2008-08-11 17:19:10 +00:00 committed by Jordan Crouse
parent 12e27266c3
commit 42a0c80b9b
1 changed files with 4 additions and 4 deletions
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8
payloads/libpayload/drivers/video/vga.c
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@ -54,7 +54,7 @@ static void vga_get_cursor(unsigned int *x, unsigned int *y, unsigned int *en)
{ {
unsigned int addr; unsigned int addr;
addr = ((unsigned int) crtc_read(0x0E)) << 8; addr = ((unsigned int) crtc_read(0x0E)) << 8;
addr += crtc_read(0x0E); addr += crtc_read(0x0F);
*x = addr % VIDEO_COLS; *x = addr % VIDEO_COLS;
*y = addr / VIDEO_COLS; *y = addr / VIDEO_COLS;
@ -68,7 +68,7 @@ static void vga_set_cursor(unsigned int x, unsigned int y)
addr = x + (VIDEO_COLS * y); addr = x + (VIDEO_COLS * y);
crtc_write(addr >> 8, 0x0E); crtc_write(addr >> 8, 0x0E);
crtc_write(addr, 0x0E); crtc_write(addr, 0x0F);
} }
static void vga_enable_cursor(int state) static void vga_enable_cursor(int state)
@ -87,7 +87,7 @@ static void vga_enable_cursor(int state)
static void vga_clear_line(u8 row, u8 ch, u8 attr) static void vga_clear_line(u8 row, u8 ch, u8 attr)
{ {
int col; int col;
u16 *ptr = VIDEO(0, row); u16 *ptr = VIDEO(row, 0);
for(col = 0; col < VIDEO_COLS; col++) for(col = 0; col < VIDEO_COLS; col++)
ptr[col] = ((attr & 0xFF) << 8) | (ch & 0xFF); ptr[col] = ((attr & 0xFF) << 8) | (ch & 0xFF);
@ -95,7 +95,7 @@ static void vga_clear_line(u8 row, u8 ch, u8 attr)
static void vga_scroll_up(void) static void vga_scroll_up(void)
{ {
u16 *src = VIDEO(0,1); u16 *src = VIDEO(1,0);
u16 *dst = VIDEO(0,0); u16 *dst = VIDEO(0,0);
int i; int i;