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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 <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> |
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