On 10/17/2011 04:24 AM, Marc Jones wrote:
On Sun, Oct 16, 2011 at 4:57 AM, Oskar Enoksson<[email protected]> wrote:
Can someone explain what RAMINIT_SYSINFO configuration option does? I
thought I understood, but I don't.
/Oskar
Hi Oskar,
RAMINIT_SYSINFO is the config option to create the AMD sysinfo
structure in CAR above the stack. This is a way to get global data in
the romstage (heap like without any management). The space for the
data structure is allocated by the DCACHE_RAM_GLOBAL_VAR_SIZE config
and the pointer is setup in cache_as_ram_main.
So setting RAMINIT_SYSINFO enables some functionality that needs that
data in the romstage, e.g. optimize_link_incoherent_ht (?) But what
would be the reason to NOT use RAMINIT_SYSINFO? To save space in the cache?
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