Aren/haiku
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If the kernel_args::cons_line field is not maintained (ie. is zero), the

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console driver now clears the screen when it's initialized.
This improves the first impression of the standard boot process when
booting in text mode (which currently happens when you press "escape"
in the early boot stage).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8939 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-09-14 17:40:23 +00:00
parent 2ef444519e
commit 81f2f81c21
1 changed files with 18 additions and 1 deletions
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19
src/kernel/drivers/arch/x86/console/console.c
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@ -85,6 +85,19 @@ scrup(void)
}
static void
clear_screen(void)
{
uint16 *base = (uint16 *)origin;
uint32 i;
for (i = 0; i < COLUMNS * LINES; i++)
base[i] = 0xf20;
pos = origin;
}
static void
lf(void)
{
@ -306,6 +319,7 @@ console_dev_init(kernel_args *ka)
dprintf("con_init: mapping vid mem\n");
vm_map_physical_memory(vm_get_kernel_aspace_id(), "vid_mem", (void *)&origin, B_ANY_KERNEL_ADDRESS,
SCREEN_END - SCREEN_START, B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA, SCREEN_START);
dprintf("con_init: mapped vid mem to virtual address 0x%x\n", origin);
pos = origin;
@ -316,7 +330,10 @@ console_dev_init(kernel_args *ka)
* access to this information. We probably need to find a
* better way of doing this.
*/
gotoxy(0, ka->cons_line);
if (ka->cons_line != 0)
gotoxy(0, ka->cons_line);
else
clear_screen();
update_cursor(x, y);
mutex_init(&console_lock, "console_lock");