Eduard Fuchs wrote: <snip> >>> Can I initialize the video card in uboot too? >> Yes, indeed you can. In a recent version of U-Boot, search for >> 'CONFIG_BIOSEMU' in include/configs/*. We tested this on a sequoia >> board, so include/configs/sequoia.h should be a good start for this. > > Thanks. > > I tried to include BIOSEMU and RADEON_FB in my u-boot. Bios emulator seems to > be properly loaded, but when u-boot attempt to read or write Radeon's > registers, the board freezes.
>From the U-Boot output below it seems that the Radeon register access works already. At least one register read access succeeded before "videoboot: Booting PCI video card bus 0, function 0, device 7" output. > What means exactly the value of "VIDEO_IO_OFFSET" in the config file? It is the base address of an address range accesses to which are translated to an I/O access on PCI by the PCI bridge. > There is a u-boot's output when I init the VIDEO_IO_OFFSET with PCI's I/O > base > address: > > > INFO : PCI0_IO : base - 0xd8000000 size - 1M bytes > INFO : PCI0_MEM0: base - 0x80000000 size - 1024M bytes > INFO : PCI0_MEM1: base - 0xc0000000 size - 128M bytes > INFO : PCI0_MEM2: base - 0xc8000000 size - 128M bytes > INFO : PCI0_MEM3: base - 0xd0000000 size - 128M bytes > ..... > PCI Scan: Found Bus 0, Device 7, Function 0 > PCI Scan: Found Bus 0, Device 7, Function 1 > PCI Scan: Found Bus 0, Device 9, Function 0 > PCI Scan: Found Bus 0, Device 10, Function 0 > Video: ATI Radeon video card (1002, 5960) found @(0:7:0) > videoboot: Booting PCI video card bus 0, function 0, device 7 > E 0000 0 F00P0F000NI00PMS0EG 0F00 Is the address translation for PCI I/O configured by some BAT? Best regards, Anatolij _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
