Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1774
-gerrit
commit e12900edecaed2007cc4d660cdcebd53112da5b7 Author: Duncan Laurie dlaurie@chromium.org Date: Wed Oct 10 12:11:55 2012 -0700
SMM: Fix save state searching for GSMI
The search for save state was comparing the entire RAX value when it needs to just operate on the bottom byte so it can find the GSMI command in bits 7:0 but not the extended command code in bits 15:8.
Change-Id: I526c60e6b3732fa3680a17a4bed2a2ef23ccf94f Signed-off-by: Duncan Laurie dlaurie@chromium.org --- src/southbridge/intel/bd82x6x/smihandler.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c index 4cad88b..804607c 100644 --- a/src/southbridge/intel/bd82x6x/smihandler.c +++ b/src/southbridge/intel/bd82x6x/smihandler.c @@ -429,7 +429,7 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat * core in case we are not running on the same core that * initiated the IO transaction. */ -static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u64 cmd) +static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u8 cmd) { em64t101_smm_state_save_area_t *state; u32 base = smi_get_tseg_base() + 0x8000 + 0x7d00; @@ -453,7 +453,7 @@ static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u64 cmd) continue;
/* Check AX against the requested command */ - if (state->rax != cmd) + if ((state->rax & 0xff) != cmd) continue;
return state;