[U-Boot] PPC460GT Canyonlands tlb table overlap?

[U-Boot] PPC460GT Canyonlands tlb table overlap?

[vb]

The Canyonland board's init.s file (board/amcc/canyonlands/init.S)
defines the contents of the TLB table for that target, it has these
two records in the table among others:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

        tlbentry(CFG_PCI_BASE, SZ_256M, 0x00000000, 0xC, AC_R|AC_W|SA_G|SA_I)

        tlbentry(CFG_PCIE_BASE, SZ_16K, 0x08010000, 0xC, AC_R|AC_W|SA_G|SA_I)

^^^^^^^^^^^^^^^^^^^^^^^^

Am I missing something, or do they indeed overlap (the first record in
fact encapsulates the second one on the physical address side).

TIA,
vadim

[U-Boot] PPC460GT Canyonlands tlb table overlap?

[Stefan Roese]

On Sunday 11 January 2009, vb wrote:
> The Canyonland board's init.s file (board/amcc/canyonlands/init.S)
> defines the contents of the TLB table for that target, it has these
> two records in the table among others:
>
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
>
>         tlbentry(CFG_PCI_BASE, SZ_256M, 0x00000000, 0xC,
> AC_R|AC_W|SA_G|SA_I)
>
>         tlbentry(CFG_PCIE_BASE, SZ_16K, 0x08010000, 0xC,
> AC_R|AC_W|SA_G|SA_I)
>
> ^^^^^^^^^^^^^^^^^^^^^^^^
>
> Am I missing something, or do they indeed overlap (the first record in
> fact encapsulates the second one on the physical address side).

You seem to be correct. This physical addresses overlap. Not sure if this 
really is a problem. A patch to fix this would be welcome. :)

Best regards,
Stefan

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