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Implement APM/ACPI functionality for MVP3/VT82C586B, including soft

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power off.
This commit is contained in:
SarahW 2020-11-01 20:46:27 +00:00
commit 038a27767a
2 changed files with 131 additions and 2 deletions
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24
src/mvp3.c
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@ -107,6 +107,16 @@ static void mvp3_host_bridge_write(int addr, uint8_t val)
if ((mvp3.host_bridge_regs[0x63] ^ val) & 0xc0)
mvp3_map(0xe0000, 0x10000, (val & 0xc0) >> 6);
mvp3.host_bridge_regs[0x63] = val;
if ((val & 3) == 1 || ((val & 3) == 3 && (cpu_cur_status & CPU_STATUS_SMM))) /*SMRAM enabled*/
{
pclog("Enable SMRAM\n");
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
}
else
{
pclog("Disable SMRAM\n");
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
}
// if (val == 0xb0)
// output = 3;
return;
@ -169,6 +179,17 @@ static void mvp3_write(int func, int addr, uint8_t val, void *priv)
}
}
static void mvp3_smram_enable(void)
{
if ((mvp3.host_bridge_regs[0x63] & 3) == 3)
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
}
static void mvp3_smram_disable(void)
{
if ((mvp3.host_bridge_regs[0x63] & 3) != 1)
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
}
void mvp3_init()
{
pci_add_specific(0, mvp3_read, mvp3_write, NULL);
@ -216,4 +237,7 @@ void mvp3_init()
mvp3.pci_bridge_regs[0x24] = 0xf0;
mvp3.pci_bridge_regs[0x25] = 0xff;
smram_enable = mvp3_smram_enable;
smram_disable = mvp3_smram_disable;
}