[U-Boot] [Patch v3 3/7] Add memory test feature for mpc85xx POST.

Kumar Gala galak at kernel.crashing.org
Wed Oct 20 07:32:59 CEST 2010


On Sep 28, 2010, at 5:20 PM, York Sun wrote:

> The memory test is performed after DDR initialization when U-boot stills runs
> in flash and cache. On recent mpc85xx platforms, the total memory can be more
> than 2GB. To cover whole memory, it needs be mapped 2GB at a time using a
> sliding TLB window. After the testing, DDR is remapped with up to 2GB memory
> from the lowest address as normal.
> 
> If memory test fails, DDR DIMM SPD and DDR controller registers are dumped for
> further debugging.
> 
> Signed-off-by: York Sun <yorksun at freescale.com>
> ---
> arch/powerpc/cpu/mpc85xx/cpu.c |  219 ++++++++++++++++++++++++++++++++++++++++
> doc/README.fsl-ddr             |   14 +++
> 2 files changed, 233 insertions(+), 0 deletions(-)

applied to 85xx

- k


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