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Properly enabled SMM (and with the correct SMBASE) on AMD 486 CPU's.

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OBattler
2020-07-20 01:44:19 +02:00
parent 2e35cb3df6
commit aeaf5ad34a
3 changed files with 6 additions and 4 deletions
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7
src/cpu/386_common.c
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@@ -74,9 +74,10 @@ smram_t temp_smram[2];
/* SMM feature masks */
#define SMM_IO_INSTRUCTION_RESTART (0x00010000)
#define SMM_SMBASE_RELOCATION (0x00020000)
#define SMM_REVISION (0x20000000)
/* TODO: Which CPU added SMBASE relocation? */
#define SMM_REVISION_ID SMM_SMBASE_RELOCATION
#define SMM_REVISION_ID (SMM_SMBASE_RELOCATION | SMM_IO_INSTRUCTION_RESTART | SMM_REVISION)
#define SMM_SAVE_STATE_MAP_SIZE 128
@@ -989,7 +990,7 @@ enter_smm(int in_hlt)
uint32_t smram_state = smbase + 0x10000;
/* If it's a CPU on which SMM is not supporter, do nothing. */
if (!is_pentium && !is_k5 && !is_k6 && !is_p6)
if (!is_am486 && !is_pentium && !is_k5 && !is_k6 && !is_p6)
return;
x386_common_log("enter_smm(): smbase = %08X\n", smbase);
@@ -1146,7 +1147,7 @@ leave_smm(void)
uint32_t smram_state = smbase + 0x10000;
/* If it's a CPU on which SMM is not supported (or not implemented in 86Box), do nothing. */
if (!is_pentium && !is_k5 && !is_k6 && !is_p6)
if (!is_am486 && !is_pentium && !is_k5 && !is_k6 && !is_p6)
return;
memset(saved_state, 0x00, SMM_SAVE_STATE_MAP_SIZE * sizeof(uint32_t));