Re: a question about mpc8xx linux
how do you know execution stop at "rfi" instruction.i think it seems it stop at "rfi" instruction when debugging through debugger, but it does n't . you check it by putting break point in the later functions e.g start_here, machine_init etc. - 5, 50, 500, 5000. Store N number of mails in your inbox. Click here.___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: a question about mpc8xx linux
Scott Wood wrote: > poorbeyond wrote: > >>my cpu is MPC860, use u-boot-1.1.4, linux-2.6.20.14 >> >>i use the "tftp 30 uImage" command download kernel image, >> >>then use the "bootm 30" command boot the image. > > > You'll need either a device-tree-aware u-boot or 8xx cuImage support; > you can get the latter from the patchset I posted recently. Sorry, I missed that you're using arch/ppc rather than arch/powerpc. arch/ppc doesn't require a device tree, though it would be good to switch to arch/powerpc once my 8xx fixes go in -- arch/ppc is deprecated. -Scott ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: a question about mpc8xx linux
poorbeyond wrote: > my cpu is MPC860, use u-boot-1.1.4, linux-2.6.20.14 > > i use the "tftp 30 uImage" command download kernel image, > > then use the "bootm 30" command boot the image. You'll need either a device-tree-aware u-boot or 8xx cuImage support; you can get the latter from the patchset I posted recently. > i found the bootm cmd entered the /arch/ppc/kernel/head_8xx.s, stop at the > instruction "rfi". > is it right? after the instruction, where does the code go normally ? what > should i do now? The rfi transfers control to start_here: -Scott ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
a question about mpc8xx linux
my cpu is MPC860, use u-boot-1.1.4, linux-2.6.20.14 i use the "tftp 30 uImage" command download kernel image, then use the "bootm 30" command boot the image. i found the bootm cmd entered the /arch/ppc/kernel/head_8xx.s, stop at the instruction "rfi". is it right? after the instruction, where does the code go normally ? what should i do now? thanks .globl __start __start: mr r31,r3 /* save parameters */ mr r30,r4 mr r29,r5 mr r28,r6 mr r27,r7 /* We have to turn on the MMU right away so we get cache modes * set correctly. */ bl initial_mmu /* We now have the lower 8 Meg mapped into TLB entries, and the caches * ready to work. */ turn_on_mmu: mfmsr r0 ori r0,r0,MSR_DR|MSR_IR mtspr SPRN_SRR1,r0 lis r0,[EMAIL PROTECTED] ori r0,r0,[EMAIL PROTECTED] mtspr SPRN_SRR0,r0 SYNC rfi/* enables MMU */ poorbeyond 2007-07-27 ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
