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x86 setup: display VESA graphics modes in vga=ask menu

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Display VESA graphics modes, with their mode IDs, in the vga=ask
menu.  Most VESA mode numbers are platform-dependent, so it helps to
have an easy way to display them.

Based in part on a patch by Petr Vandrovec <petr@vandrovec.name>.

Cc: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
H. Peter Anvin 2008-01-30 13:33:02 +01:00 committed by Ingo Molnar
parent 02a7b425e8
commit 1cac5004e9
5 changed files with 61 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/boot/video-bios.c
View File

@ -104,6 +104,7 @@ static int bios_probe(void)
mi = GET_HEAP(struct mode_info, 1);
mi->mode = VIDEO_FIRST_BIOS+mode;
mi->depth = 0; /* text */
mi->x = rdfs16(0x44a);
mi->y = rdfs8(0x484)+1;
nmodes++;
@ -116,7 +117,7 @@ static int bios_probe(void)
__videocard video_bios =
{
.card_name = "BIOS (scanned)",
.card_name = "BIOS",
.probe = bios_probe,
.set_mode = bios_set_mode,
.unsafe = 1,

26
arch/x86/boot/video-vesa.c
View File

@ -79,20 +79,28 @@ static int vesa_probe(void)
/* Text Mode, TTY BIOS supported,
supported by hardware */
mi = GET_HEAP(struct mode_info, 1);
mi->mode = mode + VIDEO_FIRST_VESA;
mi->x = vminfo.h_res;
mi->y = vminfo.v_res;
mi->mode = mode + VIDEO_FIRST_VESA;
mi->depth = 0; /* text */
mi->x = vminfo.h_res;
mi->y = vminfo.v_res;
nmodes++;
} else if ((vminfo.mode_attr & 0x99) == 0x99) {
} else if ((vminfo.mode_attr & 0x99) == 0x99 &&
(vminfo.memory_layout == 4 ||
vminfo.memory_layout == 6) &&
vminfo.memory_planes == 1) {
#ifdef CONFIG_FB
/* Graphics mode, color, linear frame buffer
supported -- register the mode but hide from
the menu. Only do this if framebuffer is
configured, however, otherwise the user will
be left without a screen. */
supported. Only register the mode if
if framebuffer is configured, however,
otherwise the user will be left without a screen.
We don't require CONFIG_FB_VESA, however, since
some of the other framebuffer drivers can use
this mode-setting, too. */
mi = GET_HEAP(struct mode_info, 1);
mi->mode = mode + VIDEO_FIRST_VESA;
mi->x = mi->y = 0;
mi->depth = vminfo.bpp;
mi->x = vminfo.h_res;
mi->y = vminfo.v_res;
nmodes++;
#endif
}

20
arch/x86/boot/video-vga.c
View File

@ -18,22 +18,22 @@
#include "video.h"
static struct mode_info vga_modes[] = {
{ VIDEO_80x25, 80, 25 },
{ VIDEO_8POINT, 80, 50 },
{ VIDEO_80x43, 80, 43 },
{ VIDEO_80x28, 80, 28 },
{ VIDEO_80x30, 80, 30 },
{ VIDEO_80x34, 80, 34 },
{ VIDEO_80x60, 80, 60 },
{ VIDEO_80x25, 80, 25, 0 },
{ VIDEO_8POINT, 80, 50, 0 },
{ VIDEO_80x43, 80, 43, 0 },
{ VIDEO_80x28, 80, 28, 0 },
{ VIDEO_80x30, 80, 30, 0 },
{ VIDEO_80x34, 80, 34, 0 },
{ VIDEO_80x60, 80, 60, 0 },
};
static struct mode_info ega_modes[] = {
{ VIDEO_80x25, 80, 25 },
{ VIDEO_8POINT, 80, 43 },
{ VIDEO_80x25, 80, 25, 0 },
{ VIDEO_8POINT, 80, 43, 0 },
};
static struct mode_info cga_modes[] = {
{ VIDEO_80x25, 80, 25 },
{ VIDEO_80x25, 80, 25, 0 },
};
__videocard video_vga;

33
arch/x86/boot/video.c
View File

@ -293,13 +293,28 @@ static void display_menu(void)
struct mode_info *mi;
char ch;
int i;
int nmodes;
int modes_per_line;
int col;
puts("Mode: COLSxROWS:\n");
nmodes = 0;
for (card = video_cards; card < video_cards_end; card++)
nmodes += card->nmodes;
modes_per_line = 1;
if (nmodes >= 20)
modes_per_line = 3;
for (col = 0; col < modes_per_line; col++)
puts("Mode: Resolution: Type: ");
putchar('\n');
col = 0;
ch = '0';
for (card = video_cards; card < video_cards_end; card++) {
mi = card->modes;
for (i = 0; i < card->nmodes; i++, mi++) {
char resbuf[32];
int visible = mi->x && mi->y;
u16 mode_id = mi->mode ? mi->mode :
(mi->y << 8)+mi->x;
@ -307,8 +322,18 @@ static void display_menu(void)
if (!visible)
continue; /* Hidden mode */
printf("%c %04X %3dx%-3d %s\n",
ch, mode_id, mi->x, mi->y, card->card_name);
if (mi->depth)
sprintf(resbuf, "%dx%d", mi->y, mi->depth);
else
sprintf(resbuf, "%d", mi->y);
printf("%c %03X %4dx%-7s %-6s",
ch, mode_id, mi->x, resbuf, card->card_name);
col++;
if (col >= modes_per_line) {
putchar('\n');
col = 0;
}
if (ch == '9')
ch = 'a';
@ -318,6 +343,8 @@ static void display_menu(void)
ch++;
}
}
if (col)
putchar('\n');
}
#define H(x) ((x)-'a'+10)

3
arch/x86/boot/video.h
View File

@ -83,7 +83,8 @@ void store_screen(void);
struct mode_info {
u16 mode; /* Mode number (vga= style) */
u8 x, y; /* Width, height */
u16 x, y; /* Width, height */
u16 depth; /* Bits per pixel, 0 for text mode */
};
struct card_info {