On Apr 24, 2009, at 9:11 AM, Joakim Tjernlund wrote: > Scott Wood <[email protected]> wrote on 23/04/2009 18:40:01: >> >> On Thu, Apr 23, 2009 at 03:32:11PM +0200, Joakim Tjernlund wrote: >>> Still trying to wrap my head around PCI and I wonder if I need to do > some >>> HW init in u-boot in order to use the PCI controller in Linux? >> >> Yes. See pci_init_board() in mpc8323erdb for an example. > > Thanks Scott, this was very helpful. > > I am trying to map the "ranges" property in the OF tree and I am > looking > at > the dts files in the kernel tree. > There are three that comes somewhat close but they all have somewhat > different > "ranges" propery: > > mpc832x_mds.dts: > ranges = <0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000
this is PCI MMIO non-prefetch @ 0x90000000 (cpu & pci) of size 256M > 0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000 this is PCI MMIO prefetch @ 0x80000000 (cpu & pci) of size 256M > 0x01000000 0x0 0x00000000 0xd0000000 0x0 0x00100000>; this is PCI IO @ @ cpu phy 0xd0000000 pci io 0x0 of size 1M > mpc832x_rdb.dts: > ranges = <0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000 > 0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000 > 0x01000000 0x0 0xd0000000 0xd0000000 0x0 0x04000000>; > > mpc8313erdb.dts: > ranges = <0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000 > 0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000 > 0x01000000 0x0 0x00000000 0xe2000000 0x0 0x00100000>; > > Don't understand how I should do here. Just select the mpc832x_rdb.dts > "ranges" and define my base addresses similarly? > #define CFG_PCI1_MEM_BASE 0x80000000 > #define CFG_PCI1_MEM_PHYS CFG_PCI1_MEM_BASE > #define CFG_PCI1_MEM_SIZE 0x10000000 /* 256M */ > #define CFG_PCI1_MMIO_BASE 0x90000000 > #define CFG_PCI1_MMIO_PHYS CFG_PCI1_MMIO_BASE > #define CFG_PCI1_MMIO_SIZE 0x10000000 /* 256M */ > #define CFG_PCI1_IO_BASE 0xd0000000 > #define CFG_PCI1_IO_PHYS CFG_PCI1_IO_BASE > #define CFG_PCI1_IO_SIZE 0x4000000 /* 64M */ this is overkill for IO, 64k is the max. (its probably inherited when we didn't know better). - k _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
