diff options
| -rw-r--r-- | src/southbridge/intel/bd82x6x/smi.c | 20 | ||||
| -rw-r--r-- | src/southbridge/intel/bd82x6x/smihandler.c | 12 |
2 files changed, 22 insertions, 10 deletions
diff --git a/src/southbridge/intel/bd82x6x/smi.c b/src/southbridge/intel/bd82x6x/smi.c index bd88df2066..c89ae18636 100644 --- a/src/southbridge/intel/bd82x6x/smi.c +++ b/src/southbridge/intel/bd82x6x/smi.c @@ -398,11 +398,19 @@ void smm_lock(void) void smm_setup_structures(void *gnvs, void *tcg, void *smi1) { - /* The GDT or coreboot table is going to live here. But a long time - * after we relocated the GNVS, so this is not troublesome. + /* + * Issue SMI to set the gnvs pointer in SMM. + * tcg and smi1 are unused. + * + * EAX = APM_CNT_GNVS_UPDATE + * EBX = gnvs pointer + * EDX = APM_CNT */ - *(u32 *)0x500 = (u32)gnvs; - *(u32 *)0x504 = (u32)tcg; - *(u32 *)0x508 = (u32)smi1; - outb(0xea, 0xb2); + asm volatile ( + "outb %%al, %%dx\n\t" + : /* ignore result */ + : "a" (APM_CNT_GNVS_UPDATE), + "b" ((u32)gnvs), + "d" (APM_CNT) + ); } diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c index 8fea33f5da..4cad88bfcf 100644 --- a/src/southbridge/intel/bd82x6x/smihandler.c +++ b/src/southbridge/intel/bd82x6x/smihandler.c @@ -424,7 +424,6 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat } } -#if CONFIG_ELOG_GSMI /* * Look for Synchronous IO SMI and use save state from that * core in case we are not running on the same core that @@ -462,7 +461,6 @@ static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u64 cmd) return NULL; } -#endif #if CONFIG_ELOG_GSMI static void southbridge_smi_gsmi(void) @@ -492,6 +490,7 @@ static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state u32 pmctrl; u8 reg8; int (*mainboard_apmc)(u8 apmc) = mainboard_smi_apmc; + em64t101_smm_state_save_area_t *state; /* Emulate B2 register as the FADT / Linux expects it */ @@ -528,8 +527,13 @@ static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state printk(BIOS_DEBUG, "SMI#: SMM structures already initialized!\n"); return; } - gnvs = *(global_nvs_t **)0x500; - smm_initialized = 1; + state = smi_apmc_find_state_save(reg8); + if (state) { + /* EBX in the state save contains the GNVS pointer */ + gnvs = (global_nvs_t *)((u32)state->rbx); + smm_initialized = 1; + printk(BIOS_DEBUG, "SMI#: Setting GNVS to %p\n", gnvs); + } break; #if CONFIG_ELOG_GSMI case ELOG_GSMI_APM_CNT: |