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Add initial implementation of Intel VS440FX motherboard.

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As part of this, add dummy Pentium Pro emulation, as well as Intel 440FX
chipset, PC87307 SuperIO and Intel 28FB200BX-T Flash.
This commit is contained in:
SarahW 2020-06-20 20:22:24 +01:00
commit cf33ab6c39
15 changed files with 751 additions and 101 deletions
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151
src/pc87307.c Normal file
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#include "ibm.h"
#include "fdc.h"
#include "io.h"
#include "lpt.h"
#include "serial.h"
#include "pc87307.h"
typedef struct pc87307_t
{
int cur_reg;
int cur_device;
uint8_t superio_cfg1, superio_cfg2;
struct
{
int enable;
uint16_t addr;
int irq;
int dma;
} dev[9];
} pc87307_t;
static pc87307_t pc87307_global;
#define DEV_KBC 0
#define DEV_MOUSE 1
#define DEV_RTC 2
#define DEV_FDC 3
#define DEV_LPT 4
#define DEV_COM2 5
#define DEV_COM1 6
#define DEV_GPIO 7
#define DEV_POWER 8
#define REG_DEVICE 0x07
#define REG_SID 0x20
#define REG_SUPERIO_CFG1 0x21
#define REG_SUPERIO_CFG2 0x22
#define REG_ENABLE 0x30
#define REG_ADDRHI 0x60
#define REG_ADDRLO 0x61
#define REG_IRQ 0x70
#define REG_DMA 0x74
void pc87307_write(uint16_t port, uint8_t val, void *p)
{
pc87307_t *pc87307 = (pc87307_t *)p;
if (port == 0x2e)
pc87307->cur_reg = val;
else
{
if (pc87307->cur_reg == REG_DEVICE)
pc87307->cur_device = val & 0xf;
else
{
// pclog("Write pc87307 %02x [%02x] %02x\n", pc87307->cur_reg, pc87307->cur_device, val);
switch (pc87307->cur_reg)
{
case REG_ENABLE:
if (pc87307->cur_device <= DEV_POWER)
pc87307->dev[pc87307->cur_device].enable = val;
break;
case REG_ADDRLO:
if (pc87307->cur_device <= DEV_POWER)
pc87307->dev[pc87307->cur_device].addr = (pc87307->dev[pc87307->cur_device].addr & 0xff00) | val;
break;
case REG_ADDRHI:
if (pc87307->cur_device <= DEV_POWER)
pc87307->dev[pc87307->cur_device].addr = (pc87307->dev[pc87307->cur_device].addr & 0x00ff) | (val << 8);
break;
case REG_IRQ:
if (pc87307->cur_device <= DEV_POWER)
pc87307->dev[pc87307->cur_device].irq = val;
break;
case REG_DMA:
if (pc87307->cur_device <= DEV_POWER)
pc87307->dev[pc87307->cur_device].dma = val;
break;
}
switch (pc87307->cur_device)
{
case DEV_FDC:
fdc_remove();
if (pc87307->dev[DEV_FDC].enable & 1)
fdc_add();
break;
case DEV_COM1:
serial1_remove();
if (pc87307->dev[DEV_COM1].enable & 1)
serial1_set(pc87307->dev[DEV_COM1].addr, pc87307->dev[DEV_COM1].irq);
break;
case DEV_COM2:
serial2_remove();
if (pc87307->dev[DEV_COM2].enable & 1)
serial2_set(pc87307->dev[DEV_COM2].addr, pc87307->dev[DEV_COM2].irq);
break;
case DEV_LPT:
lpt1_remove();
lpt2_remove();
if (pc87307->dev[DEV_LPT].enable & 1)
lpt1_init(pc87307->dev[DEV_LPT].addr);
break;
}
}
}
}
uint8_t pc87307_read(uint16_t port, void *p)
{
pc87307_t *pc87307 = (pc87307_t *)p;
// pclog("Read pc87307 %02x\n", pc87307->cur_reg);
switch (pc87307->cur_reg)
{
case REG_DEVICE:
return pc87307->cur_device;
case REG_SID:
return 0x20; /*PC87307*/
case REG_SUPERIO_CFG1:
return pc87307->superio_cfg1;
case REG_SUPERIO_CFG2:
return pc87307->superio_cfg2;
case REG_ENABLE:
return pc87307->dev[pc87307->cur_device].enable;
case REG_ADDRLO:
return pc87307->dev[pc87307->cur_device].addr & 0xff;
case REG_ADDRHI:
return pc87307->dev[pc87307->cur_device].addr >> 8;
case REG_IRQ:
return pc87307->dev[pc87307->cur_device].irq;
case REG_DMA:
return pc87307->dev[pc87307->cur_device].dma;
}
return 0xff;
}
void pc87307_init(uint16_t base)
{
memset(&pc87307_global, 0, sizeof(pc87307_t));
pc87307_global.superio_cfg1 = 0x04;
pc87307_global.superio_cfg2 = 0x03;
io_sethandler(base, 0x0002, pc87307_read, NULL, NULL, pc87307_write, NULL, NULL, &pc87307_global);
}