diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2017-09-19 16:26:34 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-09-26 16:44:54 +0000 |
| commit | 7ac2af32f317c99be61c94c082cfa411b5e7c144 (patch) | |
| tree | e4c329b2c0237eb475e140492022634b6e44f923 /src/soc | |
| parent | bbf91af9a22ad375e424c40e12f6807fcaf6965c (diff) | |
amd/stoneyridge: Make UMA memory cacheable
Use reserved_ram_resource to help ensure the UMA memory is typed
as WB.
BUG=b:65856868
TEST=Inspect MTRRs and compare with UMA memory
Change-Id: Ifa54d9b1c206d2ee6dc4b8f90b445a6820ceb8fd
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/21606
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/amd/stoneyridge/northbridge.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c index 16cda01cf2..049bcd0674 100644 --- a/src/soc/amd/stoneyridge/northbridge.c +++ b/src/soc/amd/stoneyridge/northbridge.c @@ -484,7 +484,14 @@ void domain_set_resources(device_t dev) " limitk=%08llx\n", mmio_basek, basek, limitk); } - add_uma_resource_below_tolm(dev, 7); + /* UMA is not set up yet, but infer the base & size to make cacheable */ + uint32_t uma_base = restore_top_of_low_cacheable(); + if (uma_base != bsp_topmem()) { + uint32_t uma_size = bsp_topmem() - uma_base; + printk(BIOS_INFO, "%s: uma size 0x%08x, memory start 0x%08x\n", + __func__, uma_size, uma_base); + reserved_ram_resource(dev, 7, uma_base / KiB, uma_size / KiB); + } for (link = dev->link_list ; link ; link = link->next) if (link->children) |