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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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1
src/cdrom/cdrom_image_backend.c
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@@ -262,6 +262,7 @@ cdi_get_audio_tracks(cd_img_t *cdi, int *st_track, int *end, TMSF *lead_out)
}
/* TODO: This never returns anything other than 1, should it even be an int? */
int
cdi_get_audio_tracks_lba(cd_img_t *cdi, int *st_track, int *end, uint32_t *lead_out)
{

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));

2
src/cpu/808x.c
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@@ -980,7 +980,7 @@ reset_common(int hard)
smi_block = 0;
if (hard) {
smbase = 0x00030000;
smbase = is_am486 ? 0x00060000 : 0x00030000;
ppi_reset();
}
in_sys = 0;