Hi, after years of just ignoring openSUSE for rpi, and using yocto/openembedded, I thought I'd try it again. After all, I could even get support for it on raspi3 (which I do not yet have) ;-)
It is still broken the same as when I last tried. The reason when booted normally, as almost everyone does, start.elf reads config.txt, configures the hardware according to it *and passes some customized boot parameters to the kernel*. Example (on a working yocto/OE-build, but raspbian does the same): root@raspi02:~# cat /proc/cmdline dma.dmachans=0x7f35 bcm2708_fb.fbwidth=640 bcm2708_fb.fbheight=480 bcm2708.boardrev=0xe bcm2708.serial=0x6xxxxxxx smsc95xx.macaddr=B8:27:EB:A9:00:DE bcm2708_fb.fbswap=1 sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x1fa00000 vc_mem.mem_size=0x20000000 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait console=tty0 now some of these are static, namely root@raspi02:~# strings /media/mmcblk0p1/start.elf|grep root= console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait but others are dynamic, and filled in by start.elf root@raspi02:~# strings /media/mmcblk0p1/start.elf|grep ^dma\\. dma.dmachans=0x%x bcm2708_fb.fbwidth=%d bcm2708_fb.fbheight=%d bcm2708.boardrev=0x%x bcm2708.serial=0x%x root@raspi02:~# strings /media/mmcblk0p1/start.elf|grep vc_mem\\. vc_mem.mem_base=0x%x vc_mem.mem_size=0x%x The worst part of this is, that the serial number and the mac address are not set. The NIC comes up with a random mac address and the raspi gets a new IP address on every boot. Not nice. So what's needed to fix this? Due to the convoluted way openSUSE does boot, the command line needs to be passed from start.elf to u-boot (easy, see below), then from u-boot to grub2-efi (here I gave up) and then in grub.cfg to the kernel. I have a patched, working u-boot-rpi2 in https://build.opensuse.org/package/show/home:seife:branches:Base:System/u-boot-rpi2 (this is a proof of concept patch, it exports the command line as "bootargs_orig" variable to the u-boot shell) I'm back to openembedded on the raspis for now, will check if SLES12-SP2 is really sold with this bug too, once I get my hands on an raspberrypi3 :-) have fun, seife -- Stefan Seyfried "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." -- Richard Feynman -- To unsubscribe, e-mail: opensuse-arm+unsubscr...@opensuse.org To contact the owner, e-mail: opensuse-arm+ow...@opensuse.org
