[XS] Change in coreboot[main]: vc/amd/opensil/genoa_poc/memmap: use get_top_of_mem_below_4gb

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/81092?usp=email )

Change subject: vc/amd/opensil/genoa_poc/memmap: use get_top_of_mem_below_4gb
......................................................................

vc/amd/opensil/genoa_poc/memmap: use get_top_of_mem_below_4gb

Use get_top_of_mem_below_4gb instead of open-coding the functionality.

Signed-off-by: Felix Held 
Change-Id: I5885e9ad89ed9f0aa657c56804e98c352267267f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81092
Tested-by: build bot (Jenkins) 
Reviewed-by: Varshit Pandya 
---
M src/vendorcode/amd/opensil/genoa_poc/memmap.c
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Varshit Pandya: Looks good to me, approved

diff --git a/src/vendorcode/amd/opensil/genoa_poc/memmap.c b/src/vendorcode/amd/opensil/genoa_poc/memmap.c
index 39b27ec..31e6f04 100644
--- a/src/vendorcode/amd/opensil/genoa_poc/memmap.c
+++ b/src/vendorcode/amd/opensil/genoa_poc/memmap.c
@@ -110,7 +110,7 @@
    	    mem_usable);

// Account for UMA and TSEG
-	const uint32_t top_mem = ALIGN_DOWN(rdmsr(TOP_MEM).lo, 1 * MiB);
+	const uint32_t top_mem = ALIGN_DOWN(get_top_of_mem_below_4gb(), 1 * MiB);
    if (mem_usable != top_mem)
    	reserved_ram_from_to(dev, (*idx)++, mem_usable, top_mem);