> -----Original Message----- > From: owner-linuxppc-embedded at lists.linuxppc.org > [mailto:owner-linuxppc-embedded at lists.linuxppc.org]On Behalf Of > clark at esteem.com > Sent: Friday, August 18, 2000 9:49 PM > To: linuxppc-embedded at lists.linuxppc.org > Subject: PPCBoot memory mapping problems > ... > > Our board boots up checks the kernels CRC then uncompresses it. It > then jumps to 0x0000000C. A little bit later it then jumps to some address > 0xC000???? and faults. > > Is this what it is supposed to do? Am I supossed to have the RAM
Jump to 0xC000???? Yup. Fault? No. > mapped at 0xC0000000? If it loads at address 0 how do I remap it to > 0xC0000000 once the kernel starts? Is there any way to force the kernel to Basically, the kernel boot process should be doing this *for* you. Part of the kernel boot process is to set up a memory mapping from virtual C0000000 to physical 00000000, and then enable address translation. This is done in arch/ppc/kernel/head.S using the BAT registers. > run in lower memory? I doubt it. It shouldn't be necessary, tho. > > > Thanks in advance for any help. > > Conn Clark > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
