On 27 August 2014 20:20, Florian Fainelli [off-list ref] wrote:

On 08/26/2014 10:54 PM, Rafał Miłecki wrote:

quoted

Could we avoid that? Type of flash can easily be checked in the code.
All we need to do is to read BCMA_IOST register of BCMA_CORE_NS_ROM
core.

So there is a boot status register you can read to tell what type of
flash you booted from, but does that also give you the resource ranges
for these type of flashes? Presumably they will be mapped into different
addresses (at least bcm63xx is like that), that information needs to be
listed somewhere.

Take a look at find_nvram in nvram_rw.c. It scans the whole region
which is up to 0x02000000 (SI_FLASH2_SZ) size.

In case of NAND limit is slightly different (nfl_boot_size function):
1) On ARM it's 0x800000 or 0x2600000
2) On MIPS it's 0x200000

-- 
Rafał
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