From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <40EA6940.7000705@246tNt.com> Date: Tue, 06 Jul 2004 10:56:32 +0200 From: Sylvain Munaut MIME-Version: 1.0 To: linuxppc-embedded@lists.linuxppc.org Subject: Question about PCI subsystem Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hi After documenting myself about PCI, I still have some unanswered questions : - The bootloader either don't initialize allocate resources for PCI or allocate them at a different address than me. So at boot I see "warnings" that linux could not allocate the resources, then it resets them and allocate them Ok. Is there a way to tell linux that he doesn't have to try to keep the current mapping and that he can remap all the devices ? (I mean change their BAR ) - The mpc5200 sees itself on the PCI bus, and it's BAR defines two regions : One for IO that maps to the config registers. And one that maps to the SDRAM. The problem is that I can define the size of those ( fixed in hardware ) and the SDRAM region is fixed to 1Gb ... So when linux tries to allocates resources for it it can't and display an error. It works but it's not pretty to see the error at boot. Is there a way to tell linux not to try to allocate resource for itself ? Can this have impact during master write by other devices ? Sylvain Munaut ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/