Hello All! This is my first try in booting coreboot on a LVDS panel. This is a Sandybridge-M system using video option ROM and VBT extracted from the original FW. The coreboot source was created using autoport. This same project boots to the OS using regular external DVI display. The panel doesn't have i2c ROM (DDC). Using the LCD LVDS panel shows the following in the screen and halts with post code 75 "Intel(R)Sandybridge Mobile PCI Accelerated SVGA BIOS"
"DECOMPILATION OR DISASSEMBLY PROHIBITED"
On the serial console shows the following: ---------------------------------------------------------------------------------------- CBFS: 'Master Header Locator' located CBFS at [610200:800000)
CBFS: Locating 'pci8086,0116.rom'
CBFS: Found @ offset 2d440 size 10000
In CBFS, ROM address for PCI: 00:02.0 = ffe3d688
Copying VGA ROM Image from ffe3d688 to 0xc0000, 0xf200 bytes
Calling Option ROM...
intel_vga_int15_handler: AX=5f34 BX=c000 CX=0002 DX=03da
intel_vga_int15_handler: AX=5f52 BX=0000 CX=0002 DX=0008
Unknown INT15 function 5f52!
int15 call returned error.
intel_vga_int15_handler: AX=5f14 BX=078f CX=000a DX=fde8
Unknown INT15 function 5f14!
int15 call returned error.
intel_vga_int15_handler: AX=5f35 BX=c000 CX=0002 DX=03da
intel_vga_int15_handler: AX=5f70 BX=c003 CX=0002 DX=0303
... Option ROM returned.
VBE: Getting information about VESA mode 4116
VBE: Function call failed!
Error: In vbe_get_mode_info function -------------------------------------------------------------------------- Attached is the full serial debug dump.
Any advise on what to do next? Any additional information do I need to provide?
Thank you, any help will be very much appreciated. JT