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authorMartin Roth <gaumless@gmail.com>2015-01-11 14:29:29 -0700
committerMartin Roth <gaumless@gmail.com>2015-02-06 00:53:13 +0100
commit582b2aee0f5ac84339853551cca1f4d21e1e3fca (patch)
tree5d391c29595795e1a14d51e6a20259ee0706e679 /src/northbridge/intel
parent0490f74d7808e96b079c83764d712f794ecb4198 (diff)
downloadcoreboot-582b2aee0f5ac84339853551cca1f4d21e1e3fca.tar.xz
FSP & CBMEM: Fix broken cbmem CAR transition.
1) Save the pointer to the FSP HOB list to low memory at address 0x614. This is the same location as CBMEM_RESUME_BACKUP - the two aren't used in the same platform, so overlapping should be OK. I didn't see any documentation that actually said that this location was free to use, and didn't need to be restored after use in S3 resume, but it looks like the DOS boot vector gets loaded juat above this location, so it SHOULD be ok. The alternative is to copy the memory out and store it in cbmem until we're ready to restore it. 2) When a request for the pointer to a CAR variable comes in, pass back the location inside the FSP hob structure. 3) Skip the memcopy of the CAR Data. The CAR variables do not get transitioned back into cbmem, but used out of the HOB structure. 4) Remove the BROKEN_CAR_MIGRATE Kconfig option from the FSP platform. Change-Id: Iaf566dce1b41a3bcb17e4134877f68262b5e113f Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/8196 Reviewed-by: Aaron Durbin <adurbin@google.com> Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/northbridge/intel')
-rw-r--r--src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c2
-rw-r--r--src/northbridge/intel/fsp_sandybridge/fsp/chipset_fsp_util.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c b/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c
index 3f8690a388..949cf2a767 100644
--- a/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c
+++ b/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c
@@ -174,6 +174,8 @@ void chipset_fsp_early_init(FSP_INIT_PARAMS *pFspInitParams,
void ChipsetFspReturnPoint(EFI_STATUS Status,
VOID *HobListPtr)
{
+ *(void **)CBMEM_FSP_HOB_PTR=HobListPtr;
+
if (Status == 0xFFFFFFFF) {
soft_reset();
}
diff --git a/src/northbridge/intel/fsp_sandybridge/fsp/chipset_fsp_util.c b/src/northbridge/intel/fsp_sandybridge/fsp/chipset_fsp_util.c
index a666d701d7..716873c182 100644
--- a/src/northbridge/intel/fsp_sandybridge/fsp/chipset_fsp_util.c
+++ b/src/northbridge/intel/fsp_sandybridge/fsp/chipset_fsp_util.c
@@ -107,6 +107,7 @@ void chipset_fsp_early_init(FSP_INIT_PARAMS *FspInitParams,
void ChipsetFspReturnPoint(EFI_STATUS Status,
VOID *HobListPtr)
{
+ *(void **)CBMEM_FSP_HOB_PTR=HobListPtr;
if (Status == 0xFFFFFFFF) {
hard_reset();
}