[U-Boot] [PATCH 1/3] ppc4xx: Consolidate pci_target_init() function
Stefan Roese
sr at denx.de
Tue Nov 17 10:39:21 CET 2009
Hi Matthias,
On Sunday 15 November 2009 15:01:45 Matthias Fuchs wrote:
> > + * Make this region non-prefetchable.
> > + */
> > + /* PMM0 Mask/Attribute - disabled b4 setting */
> > + out_le32((void *)PCIL0_PMM0MA, 0x00000000);
> > + /* PMM0 Local Address */
> > + out_le32((void *)PCIL0_PMM0LA, CONFIG_SYS_PCI_MEMBASE);
> > + /* PMM0 PCI Low Address */
> > + out_le32((void *)PCIL0_PMM0PCILA, CONFIG_SYS_PCI_MEMBASE);
> > + /* PMM0 PCI High Address */
> > + out_le32((void *)PCIL0_PMM0PCIHA, 0x00000000);
> > + /* 512M + No prefetching, and enable region */
> > + out_le32((void *)PCIL0_PMM0MA, 0xE0000001);
> > +
> > + /* PMM0 Mask/Attribute - disabled b4 setting */
>
> Typo. PMM0<->PMM1 inside comments. 4x.
Thanks for spotting. Will fix.
> > + out_le32((void *)PCIL0_PMM1MA, 0x00000000);
> > + /* PMM0 Local Address */
> > + out_le32((void *)PCIL0_PMM1LA, CONFIG_SYS_PCI_MEMBASE2);
> > + /* PMM0 PCI Low Address */
> > + out_le32((void *)PCIL0_PMM1PCILA, CONFIG_SYS_PCI_MEMBASE2);
> > + /* PMM0 PCI High Address */
> > + out_le32((void *)PCIL0_PMM1PCIHA, 0x00000000);
> > + /* 512M + No prefetching, and enable region */
> > + out_le32((void *)PCIL0_PMM1MA, 0xE0000001);
>
> BTW, do you know why most 440 boards use PMM0+1 to map 1GB?
> PMC440 uses PMM0 for this only. I don't see a problem with this when
> CONFIG_SYS_PCI_MEMBASE is aligned to CONFIG_SYS_PCI_MEMBASE.
No, I don't see a problem with this either. We should probably address this in
a follow-up patch.
<snip>
> > diff --git a/include/configs/PMC440.h b/include/configs/PMC440.h
> > index d6e2f6b..89be2ca 100644
> > --- a/include/configs/PMC440.h
> > +++ b/include/configs/PMC440.h
> > @@ -440,6 +440,7 @@
> > #define CONFIG_SYS_PCI_SUBSYS_VENDORID 0x12FE /* PCI Vendor ID: esd gmbh
> > */ #define CONFIG_SYS_PCI_SUBSYS_ID_NONMONARCH 0x0441 /* PCI Device
> > ID: Non-Monarch */ #define CONFIG_SYS_PCI_SUBSYS_ID_MONARCH 0x0440 /* PCI
> > Device ID: Monarch */ +#define CONFIG_SYS_PCI_SUBSYS_ID 0x0440 /* for
> > weak __pci_target_init() */
>
> I would prefer:
> #define CONFIG_SYS_PCI_SUBSYS_ID CONFIG_SYS_PCI_SUBSYS_ID_MONARCH /* for
> weak __pci_target_init() */
OK, will change.
> On the other side I am also not very happy with defines that are required
> just to satisfy some overwritten weak code. But in this case it probably
> the easiest way to go.
Yes, I didn't see an easier way out of this, without introducing another
#ifdef.
New patch will follow soon. Please feel free to send you Acked-by if you are
ok with it.
Thanks.
Cheers,
Stefan
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