On 3 September 2014 22:13, Hauke Mehrtens <hauke@xxxxxxxxxx> wrote: > On 09/03/2014 07:14 PM, Rafał Miłecki wrote: >> NVRAM can be read using magic memory offset, but after all it's just a >> flash partition. On platforms where NVRAM isn't needed early we can get >> it using mtd subsystem. > > Where would this work? > > Do you plan the following initialization order in bcma on arm and mips? > > 1. bcma SoC version > 2. bcma bus scan > 3. flash driver registration > 4. nvram read > 5. sprom generation from nvram and attaching to bcma > 6. registration of the other bcam cores (wifi, ...) > > The nvram is memory mapped on every SoC, just on devices with nand flash > booting we would need something to check for bad blocks. The order you noted is probably quite accurate. Indeed, I want to use "mtd" subsystem because of NAND. Mapping NAND flash content to the memory is nice, but it's reliable for few first sections/blocks only. The rest of flash may contain bad blocks and we should read it being aware of that.
