diff options
author | Patrick Williams <iawillia@us.ibm.com> | 2014-04-15 17:45:53 -0500 |
---|---|---|
committer | A. Patrick Williams III <iawillia@us.ibm.com> | 2014-05-09 07:19:10 -0500 |
commit | 868e98cac34aed64ffb5f983a3662ae31af0c8a1 (patch) | |
tree | 51eb73b4c371ec4e1347f6ff7423d4b32c576436 /src/include/usr/vmmconst.h | |
parent | f1207a134bea63fc08342effe5e806aa38cc26e6 (diff) | |
download | talos-hostboot-868e98cac34aed64ffb5f983a3662ae31af0c8a1.tar.gz talos-hostboot-868e98cac34aed64ffb5f983a3662ae31af0c8a1.zip |
Move mailbox area to leave more room for Sapphire.
Change-Id: If39241fbbc110400177b3ef3a5e895f5ed14f2a4
RTC: 81670
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/10588
Tested-by: Jenkins Server
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Diffstat (limited to 'src/include/usr/vmmconst.h')
-rw-r--r-- | src/include/usr/vmmconst.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/include/usr/vmmconst.h b/src/include/usr/vmmconst.h index 33586a4db..df2d0f604 100644 --- a/src/include/usr/vmmconst.h +++ b/src/include/usr/vmmconst.h @@ -167,6 +167,22 @@ enum BlockPriority */ #define VMM_INTERNODE_PRESERVED_MEMORY_ADDR (96 * MEGABYTE) +/** Region of memory reserved for unsecure memory accesses + * + * The Secure BAR is placed at 64MB so that initially, everything above + * is marked secure and everything below is marked unsecure. External + * entities, such as FSP, can only access memory in the unsecure region. + * Items such as the Mailbox DMA buffer need to be placed into this region. + * + * We do not want to place this region directly at zero because in some cases + * we load a payload at address 0 (ex. Sapphire) and need to make sure there + * is enough room for the payload before any reserved unsecure space. + * + * Choosing (Secure BAR - Cache Size) as the value for this region, which + * allows us to have a payload image up to that size and up to 'Cache Size' + * worth of unsecure content. + */ +#define VMM_UNSECURE_RESERVED_MEMORY_BASEADDR (56 * MEGABYTE) /** * Test Constants |