Re: [SeaBIOS] eDP Init Failure on Broadwell

[Kevin O'Connor]

On Sun, Jan 03, 2016 at 06:29:16PM +0000, CoolStar Organization wrote:
> I have attached 4 cbmem's.
>
> cbmem.txt is with coreboot running the ROM & seabios using SeaVGABIOS. eDP
> Inits properly and all is fine.
>
> I thought textmode might be the issue so I added a bootsplash but still no
> dice :/
>
> cbmem-seasplash.txt is with seabios running the VGA Bios and no display.
> cbmem-seasplashhdmi.txt is with seabios running the VGA BIOS and display on
> an external HDMI display.
>
> cbmem-seasplashnotext.txt is same as cbmem-seasplash.txt except I commented
> out code in enable_vga_console after the dprintf to see if disabling text
> mode would do anything.

Can you apply the seabios patch below and run again with eDP and
seabios running the option rom?

BTW, it looks like the build could not extract the seabios version.
What seabios version are you using?  Are you using an unusual build
environment?

-Kevin

--- a/src/vgahooks.c
+++ b/src/vgahooks.c
@@ -303,6 +303,7 @@ winent_mb6047_setup(struct pci_device *pci)
 void
 handle_155f(struct bregs *regs)
 {
+    debug_enter(regs, 1);
     if (!CONFIG_VGAHOOKS) {
         handle_155fXX(regs);
         return;
@@ -320,6 +321,7 @@ handle_155f(struct bregs *regs)
 void
 handle_157f(struct bregs *regs)
 {
+    debug_enter(regs, 1);
     if (!CONFIG_VGAHOOKS) {
         handle_157fXX(regs);
         return;

eDP Init Failure on Broadwell

[CoolStar Organization]

I'm using SeaBIOS 1.9.0 stable. I'm building with make/gcc on Ubuntu 14.04
LTS. Will try those patches in a few.

On Sun, Jan 3, 2016 at 10:47 AM Kevin O'Connor  wrote:
> On Sun, Jan 03, 2016 at 06:29:16PM +0000, CoolStar Organization wrote:
> > I have attached 4 cbmem's.
> >
> > cbmem.txt is with coreboot running the ROM & seabios using SeaVGABIOS.
>
> eDP
> > Inits properly and all is fine.
> >
> > I thought textmode might be the issue so I added a bootsplash but still
>
> no
> > dice :/
> >
> > cbmem-seasplash.txt is with seabios running the VGA Bios and no display.
> > cbmem-seasplashhdmi.txt is with seabios running the VGA BIOS and display
>
> on
> > an external HDMI display.
> >
> > cbmem-seasplashnotext.txt is same as cbmem-seasplash.txt except I
>
> commented
> > out code in enable_vga_console after the dprintf to see if disabling text
> > mode would do anything.
>
> Can you apply the seabios patch below and run again with eDP and
> seabios running the option rom?
>
> BTW, it looks like the build could not extract the seabios version.
> What seabios version are you using?  Are you using an unusual build
> environment?
>
> -Kevin
>
> --- a/src/vgahooks.c
> +++ b/src/vgahooks.c
> @@ -303,6 +303,7 @@ winent_mb6047_setup(struct pci_device *pci)
>  void
>  handle_155f(struct bregs *regs)
>  {
> debug_enter(regs, 1);
> if (!CONFIG_VGAHOOKS) {
>     handle_155fXX(regs);
>     return;
>
> @@ -320,6 +321,7 @@ handle_155f(struct bregs *regs)
>  void
>  handle_157f(struct bregs *regs)
>  {
> debug_enter(regs, 1);
> if (!CONFIG_VGAHOOKS) {
>     handle_157fXX(regs);
>     return;