RE: [PATCH] arm/tegra: select AUTO_ZRELADDR by default
From: Stephen Warren
Date: Fri Oct 14 2011 - 12:12:32 EST
Arnd Bergmann wrote at Friday, October 14, 2011 9:30 AM:
...
> You mention that tegra30 will require AUTO_ZRELADDR.
Well, just to be clear, here's the situation I think:
Tegra20's SDRAM starts at physical address 0.
Tegra30's SDRAM starts at physical address 2G.
To support that, we could either:
a) Introduce a new Kconfig variable for Tegra30, make T20/T30 mutually
exclusive, and update arch/arm/mach-tegra/Makefile.boot to set zreladdr
etc. based on the new Tegra30 config variable too. Then, there's no need
for AUTO_ZRELADDR anywhere.
b) Have no new config variable, build a unified T20/T30 kernel, leave
Makefile.boot untouched, and rely on using AUTO_ZRELADDR for Tegra30 to
account for the different SDRAM physical addresses.
> Does that mean that with tegra30 merged you would no longer be able
> to build any tegra kernel?
Sorry, I don't quite understand that question.
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