On 2010/08/24 8:07 AM, Albert ARIBAUD wrote: > Le 24/08/2010 07:21, Chris Moore a écrit : >> Hi Rogan, >> >> Le 23/08/2010 18:06, Rogan Dawes a écrit : >>> Doubling the value for ORION5X_SZ_BOOTROM allowed me to access the >>> additional sectors, but that makes me wonder what the reason for it is. >>> >>> I know that the flash chip is wired up strangely, but would that also >>> affect the window mappings? If that is the case, I just need to document >>> WHY the parameter is doubled, but if not, it would be good to understand >>> the real reason for the change. >>> >> >> I am (very rashly) stabbing in the dark here because I don't know much >> about U-Boot and I haven't followed your previous posts (hence this >> off-list reply). >> >> However if your device size is half the bus size (like an 8-bit device >> on a 16-bit bus) it would seem logical to have to double the window size. >> >> Cheers, >> Chris > > Hi Chris, BTW. :) > > Rogan, > > Seeing as ORION5X_SZ_BOOTROM is only used as a byte address limit for > window mapping, and device vs bus size govern the maximum amout in a > single bus access but do not govern its addressing, I don't think device > width is involved here. > > I'd rather ask whether this could be a window alignment issue, i.e is > the flash base address 8 MB aligned? Seems like it, because IIRC its > base is FF800000, which is 8MB-aligned. > > Can you still try the original u-boot? Does it allow reading the full 8 > MB? If so, can you do a 'md.l 0xF1020000 40' in it, and then in your own > u-boot with ORION5X_SZ_BOOTROM set to 8MB then 16MB? These are the > window mapping registers, and it will allow us to know what the CPU > really thinks boot ROM looks like. Also dump F101046C, that's the boot > device bus configuration, again in both U-boots. > > Amicalement,
Hi Albert, Yes, I still have the vendor u-boot flashed, so I can still see its configuration. And, yes, it does allow reading the full 8MB of flash. Vendor u-boot: > md.l f1020000 40 f1020000: 07ff5941 90000000 40000000 00000000 ay.........@.... f1020010: 07ff5931 98000000 40000000 00000000 1y.........@.... f1020020: 000f5141 f0000000 00000000 00000000 AQ.............. f1020030: 000f5131 f0100000 00000000 00000000 1Q.............. f1020040: 007f0f11 ff800000 00000000 00000000 ................ f1020050: 001f1e11 fa000000 00000000 00000000 ................ f1020060: 01ff1d11 f8000000 00000000 00000000 ................ f1020070: 000f1b11 fa800000 00000000 00000000 ................ f1020080: f1000000 00000000 00000000 00000000 ................ f1020090: 00000000 00000000 00000000 00000000 ................ f10200a0: 00000000 00000000 00000000 00000000 ................ f10200b0: 00000000 00000000 00000000 00000000 ................ f10200c0: 00000000 00000000 00000000 00000000 ................ f10200d0: 00000000 00000000 00000000 00000000 ................ f10200e0: 00000000 00000000 00000000 00000000 ................ f10200f0: 00000000 00000000 00000000 00000000 ................ Mainline (8MB window): > md.l f1020000 40 f1020000: 03ff5941 90000000 90000000 00000000 AY.............. f1020010: 00005141 f0000000 90000000 00000000 AQ.............. f1020020: 03ff5931 98000000 00000000 00000000 1Y.............. f1020030: 00005131 f0100000 00000000 00000000 1Q.............. f1020040: 000f1e11 fa000000 00000000 00000000 ................ f1020050: 00ff1d11 f8000000 00000000 00000000 ................ f1020060: 00071b11 fa800000 00000000 00000000 ................ f1020070: 003f0f11 ff800000 00000000 00000000 ..?............. f1020080: f1000000 00000000 00000000 00000000 ................ f1020090: 00000000 00000000 00000000 00000000 ................ f10200a0: 00000000 00000000 00000000 00000000 ................ f10200b0: 00000000 00000000 00000000 00000000 ................ f10200c0: 00000000 00000000 00000000 00000000 ................ f10200d0: 00000000 00000000 00000000 00000000 ................ f10200e0: 00000000 00000000 00000000 00000000 ................ f10200f0: 00000000 00000000 00000000 00000000 ................ Mainline (16MB window): > md.l f1020000 40 f1020000: 03ff5941 90000000 90000000 00000000 AY.............. f1020010: 00005141 f0000000 90000000 00000000 AQ.............. f1020020: 03ff5931 98000000 00000000 00000000 1Y.............. f1020030: 00005131 f0100000 00000000 00000000 1Q.............. f1020040: 000f1e11 fa000000 00000000 00000000 ................ f1020050: 00ff1d11 f8000000 00000000 00000000 ................ f1020060: 00071b11 fa800000 00000000 00000000 ................ f1020070: 007f0f11 ff800000 00000000 00000000 ................ f1020080: f1000000 00000000 00000000 00000000 ................ f1020090: 00000000 00000000 00000000 00000000 ................ f10200a0: 00000000 00000000 00000000 00000000 ................ f10200b0: 00000000 00000000 00000000 00000000 ................ f10200c0: 00000000 00000000 00000000 00000000 ................ f10200d0: 00000000 00000000 00000000 00000000 ................ f10200e0: 00000000 00000000 00000000 00000000 ................ f10200f0: 00000000 00000000 00000000 00000000 ................ > $ diff vendor mainline_8MB < Vendor u-boot: > Mainline (8MB window): --- < f1020000: 07ff5941 90000000 40000000 00000000 ay.........@.... > f1020000: 03ff5941 90000000 90000000 00000000 AY.............. --- < f1020010: 07ff5931 98000000 40000000 00000000 1y.........@.... > f1020010: 00005141 f0000000 90000000 00000000 AQ.............. --- < f1020020: 000f5141 f0000000 00000000 00000000 AQ.............. > f1020020: 03ff5931 98000000 00000000 00000000 1Y.............. --- < f1020030: 000f5131 f0100000 00000000 00000000 1Q.............. > f1020030: 00005131 f0100000 00000000 00000000 1Q.............. --- < f1020040: 007f0f11 ff800000 00000000 00000000 ................ > f1020040: 000f1e11 fa000000 00000000 00000000 ................ --- < f1020050: 001f1e11 fa000000 00000000 00000000 ................ > f1020050: 00ff1d11 f8000000 00000000 00000000 ................ --- < f1020060: 01ff1d11 f8000000 00000000 00000000 ................ > f1020060: 00071b11 fa800000 00000000 00000000 ................ --- < f1020070: 000f1b11 fa800000 00000000 00000000 ................ > f1020070: 003f0f11 ff800000 00000000 00000000 ..?............. $ diff vendor mainline_16MB < Vendor u-boot: > Mainline (16MB window): --- < f1020000: 07ff5941 90000000 40000000 00000000 ay.........@.... > f1020000: 03ff5941 90000000 90000000 00000000 AY.............. --- < f1020010: 07ff5931 98000000 40000000 00000000 1y.........@.... > f1020010: 00005141 f0000000 90000000 00000000 AQ.............. --- < f1020020: 000f5141 f0000000 00000000 00000000 AQ.............. > f1020020: 03ff5931 98000000 00000000 00000000 1Y.............. --- < f1020030: 000f5131 f0100000 00000000 00000000 1Q.............. > f1020030: 00005131 f0100000 00000000 00000000 1Q.............. --- < f1020040: 007f0f11 ff800000 00000000 00000000 ................ > f1020040: 000f1e11 fa000000 00000000 00000000 ................ --- < f1020050: 001f1e11 fa000000 00000000 00000000 ................ > f1020050: 00ff1d11 f8000000 00000000 00000000 ................ --- < f1020060: 01ff1d11 f8000000 00000000 00000000 ................ > f1020060: 00071b11 fa800000 00000000 00000000 ................ --- < f1020070: 000f1b11 fa800000 00000000 00000000 ................ > f1020070: 007f0f11 ff800000 00000000 00000000 ................ $ diff mainline_8MB mainline_16MB < Mainline (8MB window): > Mainline (16MB window): --- < f1020070: 003f0f11 ff800000 00000000 00000000 ..?............. > f1020070: 007f0f11 ff800000 00000000 00000000 ................ Here is the dump of the other region you requested, too. It is the same on all versions of u-boot: > md.l f101046c 40 f101046c: 8fcfffff 00000000 00000000 00000000 ................ f101047c: 00000000 00000000 00000000 00000000 ................ f101048c: 00000000 00000000 00000000 00000000 ................ f101049c: 00000000 00000000 00000000 00000000 ................ f10104ac: 00000000 00000000 00000000 00000000 ................ f10104bc: 00000000 0004ffff 00000000 00000000 ................ f10104cc: 00000000 00000000 00000000 00000000 ................ f10104dc: 0000001f 0000781f 00000000 f007d8c0 .....x.......... f10104ec: 00000000 00000042 00000000 00000000 ....B........... f10104fc: 00000000 00000000 00000000 00000000 ................ f101050c: 00000000 00000000 00000000 00000000 ................ f101051c: 00000000 00000000 00000000 00000000 ................ f101052c: 00000000 00000000 00000000 00000000 ................ f101053c: 00000000 00000000 00000000 00000000 ................ f101054c: 00000000 00000000 00000000 00000000 ................ f101055c: 00000000 00000000 00000000 00000000 ................ Hope this makes sense! Rogan _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
