So the current situation on endian of bochs framebufer is a little bit complex. QEMU defaulted to little endian for both endian hardware except on powerpc, but provided an endian swich register allows OS to switch endian.
Since we can't guarantee the endian switch register is functional, my approach is to default to little endian framebuffer for ISAs except powerpc and perform endian switch to match this assumption.
Signed-off-by: Jiaxun Yang jiaxun.yang@flygoat.com --- drivers/video/bochs.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c index 00e673a4db08..c315c5477b14 100644 --- a/drivers/video/bochs.c +++ b/drivers/video/bochs.c @@ -65,6 +65,14 @@ static int bochs_init_fb(struct udevice *dev) uc_priv->ysize = ysize; uc_priv->bpix = VIDEO_BPP32;
+#if defined(__powerpc__) && defined(__BIG_ENDIAN) + uc_priv->format = VIDEO_XRGB8888_BE; + writel(0xbebebebe, mmio + 0x604); +#else + uc_priv->format = VIDEO_XRGB8888; + writel(0x1e1e1e1e, mmio + 0x604); +#endif + /* setup video mode */ bochs_write(mmio, INDEX_ENABLE, 0); bochs_write(mmio, INDEX_BANK, 0);