diff options
| -rw-r--r-- | hw/display/vga.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/hw/display/vga.c b/hw/display/vga.c index 6e4ca7e9ab..c0f7b343bb 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -2094,6 +2094,17 @@ static const GraphicHwOps vga_ops = { .text_update = vga_update_text, }; +static inline uint32_t uint_clamp(uint32_t val, uint32_t vmin, uint32_t vmax) +{ + if (val < vmin) { + return vmin; + } + if (val > vmax) { + return vmax; + } + return val; +} + void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate) { int i, j, v, b; @@ -2121,13 +2132,10 @@ void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate) expand4to8[i] = v; } - /* valid range: 1 MB -> 512 MB */ - s->vram_size = 1024 * 1024; - while (s->vram_size < (s->vram_size_mb << 20) && - s->vram_size < (512 << 20)) { - s->vram_size <<= 1; - } - s->vram_size_mb = s->vram_size >> 20; + s->vram_size_mb = uint_clamp(s->vram_size_mb, 1, 512); + s->vram_size_mb = pow2ceil(s->vram_size_mb); + s->vram_size = s->vram_size_mb << 20; + if (!s->vbe_size) { s->vbe_size = s->vram_size; } |