aopen/dxplplusu: Support SMM_ASEG and SMM_TSEG

Both SMM_ASEG and SMM_TSEG choices work.

There is periodic TCO timeout occurring.
At least with DEBUG_SMI kernel reports low memory corruption.

Change-Id: If20a7092117612a1a9e25eb6ac480e105acd57d7
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61517
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/northbridge/intel/e7505/northbridge.c b/src/northbridge/intel/e7505/northbridge.c
index 08ac122..cc7f85d 100644
--- a/src/northbridge/intel/e7505/northbridge.c
+++ b/src/northbridge/intel/e7505/northbridge.c
@@ -42,6 +42,9 @@
 	ram_resource_kb(dev, idx++, 0, tolmk);
 	mmio_resource_kb(dev, idx++, 0xa0000 / KiB, (0xc0000 - 0xa0000) / KiB);
 
+	uintptr_t tseg_memory_base = northbridge_get_tseg_base();
+	size_t tseg_memory_size = northbridge_get_tseg_size();
+	mmio_resource_kb(dev, idx++, tseg_memory_base / KiB, tseg_memory_size / KiB);
 
 	ASSERT(tom == remapbase);
 	upper_ram_end(dev, idx++, remaplimit);