On Mon, Sep 28, 2020 at 12:26 PM Simon Glass <s...@chromium.org> wrote: > > At present the top of available DRAM is the same as the top of the range > of the low-memory MTRR. > > In fact, U-Boot is allowed to use memory up until the start of the FSP > reserved memory. Use that value for low_end, since it makes more memory > available. > > Keep the same calculation as before for mtrr_top, i.e. the top of > reserved memory. > > A side-effect of this change is that the E820 tables have a single entry > that extends from the bottom of the memory used by U-Boot to the bottom > of the FSP reserved memory. This includes the bloblist, if ACPI tables > are placed there. > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > arch/x86/lib/fsp/fsp_dram.c | 35 ++++++++++++++++++++++------------- > 1 file changed, 22 insertions(+), 13 deletions(-) >
Reviewed-by: Bin Meng <bmeng...@gmail.com>
