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hw/display/artist: Verify artist screen resolution

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Artist hardware is limited to 2048 x 2048 pixels.
STI ROMs allow at minimum 640 x 480 pixels.

Qemu users can adjust the screen size on the command line with:
 -global artist.width=800 -global artist.height=600
but we need to ensure that the screen size stays inside the given
boundaries, otherwise print an error message and adjust.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Helge Deller 2020-09-03 07:09:31 +02:00
parent 3b65b74254
commit 95aad497d9
1 changed files with 12 additions and 0 deletions
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12
hw/display/artist.c
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@ -1374,6 +1374,18 @@ static void artist_realizefn(DeviceState *dev, Error **errp)
struct vram_buffer *buf;
hwaddr offset = 0;
if (s->width > 2048 || s->height > 2048) {
error_report("artist: screen size can not exceed 2048 x 2048 pixel.");
s->width = MIN(s->width, 2048);
s->height = MIN(s->height, 2048);
}
if (s->width < 640 || s->height < 480) {
error_report("artist: minimum screen size is 640 x 480 pixel.");
s->width = MAX(s->width, 640);
s->height = MAX(s->height, 480);
}
memory_region_init(&s->mem_as_root, OBJECT(dev), "artist", ~0ull);
address_space_init(&s->as, &s->mem_as_root, "artist");