[U-Boot] [U-Boot, v4, 08/16] powerpc: mpc8xx: redistribute data in CPM dpram

Tom Rini trini at konsulko.com
Fri Apr 6 21:03:14 UTC 2018


On Fri, Mar 16, 2018 at 05:20:45PM +0100, Christophe Leroy wrote:

> Some malloc memory is needed at startup for DM model.
> Lets reorganise the use of the CPM dpram.
> 
> The MPC866/885 dpram, we have 8kbytes dual port RAM, which is usable as:
> IMMR + 0x2000..0x2800: BD/Data/Microcode
> IMMR + 0x2800..0x2e00: BD/Data
> IMMR + 0x2e00..0x3800: BD/Data/Microcode
> IMMR + 0x3800..0x3a00: BD/Data
> IMMR + 0x3a00..0x3c00: BD/Data/Microcode
> IMMR + 0x3c00..0x4000: Parameters for the Peripheral Controllers
> 
> Lets reallocate all BDs in the 3800..3a00 area and give the full
> 2800..2e00 for dynamic RAM allocation including global data
> 
> That way, the microcode areas remain available if needed one day.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to u-boot/master, thanks!

-- 
Tom
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