On Sun, Jan 13, 2008 at 02:26:12PM +0000, Bryan O'Donoghue wrote: > I've applied your code against Linus' git v2.6.26-rc7 as at today. > I have to apply
It should apply against paulus's tree. > make adder87x-uboot_defconfig > > make uImage make zImage, not uImage. > cp arch/powerpc/boot/uImage /tftpboot - which is my tftpd root > directory. Use cuImage.8xx, not uImage. > In U-Boot then. > > => tftpboot 0x400000 uImage > => bootm 0x400000 0x400000 is where u-boot is going to want to relocate the image to, so loading the uImage there may not work. > Which doesn't boot. > > Attaching a BDI2000 to the target board I see that the kernel is > panicing somewhere around line 104 of arch/powerpc/kernel/prom.c in > of_scan_flat_dt - presumably because the kernel cannot find an > OpenFirmware tree.. Yes, a uImage target will be expecting to be handed a device tree. The cuImage target has a device tree embedded and accepts the old-style bd_t. > I admit not understanding everything I should about where the output > of .dts & dtc "go" with respect to booting Linux.... but, didn't want to > ask on the list - lest I display a "lack of knowledge" ... Nothing wrong with asking... doing so on the list just means a larger pool of people to respond, and that others with the same question can see the answer. > /* pass open firmware flat tree */ > #define CONFIG_OF_LIBFDT 1 > #undef CONFIG_OF_FLAT_TREE > #define CONFIG_OF_BOARD_SETUP 1 > #define CONFIG_OF_HAS_BD_T 1 > #define CONFIG_OF_HAS_UBOOT_ENV 1 > > #define OF_CPU "PowerPC,875 at 0" > #define OF_SOC "soc875 at ff000000" > #define OF_TBCLK (bd->bi_busfreq / 4) You'll probably need some 8xx-specific code if you want to go this route. You'd also need to change the bootm command line to the three-argument version, with the third argument being the address of the device tree blob (the second argument can be - if there's no initrd). If you're not comfortable with the device tree stuff, I recommend just using cuImage for now. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
