extern struct vmm_os_hooks *os_hooks;
+extern void SerialPrint(const char *format, ...);
#define NVRAM_REG_PORT 0x70
#define NVRAM_DATA_PORT 0x71
-typedef enum {NVRAM_READY,NVRAM_REG_POSTED} nvram_state_t;
+typedef enum {NVRAM_READY, NVRAM_REG_POSTED} nvram_state_t;
#define NVRAM_REG_MAX 256
// These are borrowed from Bochs, which borrowed from
-// Ralf Brown's interupt list
+// Ralf Brown's interupt list, and extended
#define NVRAM_REG_SEC 0x00
#define NVRAM_REG_SEC_ALARM 0x01
#define NVRAM_REG_MIN 0x02
#define NVRAM_REG_STAT_D 0x0d
#define NVRAM_REG_DIAGNOSTIC_STATUS 0x0e
#define NVRAM_REG_SHUTDOWN_STATUS 0x0f
+
+#define NVRAM_IBM_HD_DATA 0x12
+
+#define NVRAM_REG_FLOPPY_TYPE 0x10
#define NVRAM_REG_EQUIPMENT_BYTE 0x14
+
+#define NVRAM_REG_BASE_MEMORY_HIGH 0x16
+#define NVRAM_REG_BASE_MEMORY_LOW 0x15
+
+#define NVRAM_REG_EXT_MEMORY_HIGH 0x18
+#define NVRAM_REG_EXT_MEMORY_LOW 0x17
+
+#define NVRAM_REG_EXT_MEMORY_2ND_HIGH 0x31
+#define NVRAM_REG_EXT_MEMORY_2ND_LOW 0x30
+
+#define NVRAM_REG_BOOTSEQ_OLD 0x2d
+
+#define NVRAM_REG_AMI_BIG_MEMORY_HIGH 0x35
+#define NVRAM_REG_AMI_BIG_MEMORY_LOW 0x34
+
+
#define NVRAM_REG_CSUM_HIGH 0x2e
#define NVRAM_REG_CSUM_LOW 0x2f
#define NVRAM_REG_IBM_CENTURY_BYTE 0x32
#define NVRAM_REG_IBM_PS2_CENTURY_BYTE 0x37
+#define NVRAM_REG_BOOTSEQ_NEW_FIRST 0x3D
+#define NVRAM_REG_BOOTSEQ_NEW_SECOND 0x38
struct nvram_internal {
+static int set_nvram_defaults(struct vm_device *dev)
+{
+ struct nvram_internal * nvram_state = (struct nvram_internal*) dev->private_data;
+
+ //
+ // 2 1.44 MB floppy drives
+ //
+ nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE]= 0x44;
+
+ //
+ // For old boot sequence style, do floppy first
+ //
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_OLD]= 0x10;
+
+#if 0
+ // For new boot sequence style, do floppy, cd, then hd
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST]= 0x31;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND]= 0x20;
+#endif
+
+ // For new boot sequence style, do cd, hd, floppy
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST]= 0x23;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND]= 0x10;
+
+ // Set equipment byte to note 2 floppies, vga display, keyboard,math,floppy
+ nvram_state->mem_state[NVRAM_REG_EQUIPMENT_BYTE]= 0x4f;
+
+ // Set conventional memory to 640K
+ nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_HIGH]= 0x02;
+ nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_LOW]= 0x80;
+
+ // Set extended memory to 15 MB
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_HIGH]= 0x3C;
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_LOW]= 0x00;
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_2ND_HIGH]= 0x3C;
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_2ND_LOW]= 0x00;
+
+ // Set the extended memory beyond 16 MB to 128-16 MB
+ nvram_state->mem_state[NVRAM_REG_AMI_BIG_MEMORY_HIGH]= 0x7;
+ nvram_state->mem_state[NVRAM_REG_AMI_BIG_MEMORY_LOW]= 0x00;
-int nvram_reset_device(struct vm_device *dev)
-{
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
-
- data->dev_state = NVRAM_READY;
- data->thereg=0;
+ // This is the harddisk type.... Set accordingly...
+ nvram_state->mem_state[NVRAM_IBM_HD_DATA] = 0x20;
+
return 0;
}
-int nvram_init_device(struct vm_device *dev, struct vm_guest *vm)
+
+int nvram_reset_device(struct vm_device * dev)
{
struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
-
- memset(data->mem_state,0,NVRAM_REG_MAX);
-
- nvram_reset_device(dev);
-
- // hook ports
- dev_mgr_hook_io(dev->vm,
- dev,
- NVRAM_REG_PORT,
- DEVICE_EMULATED,
- DEVICE_WRITE);
-
- dev_mgr_hook_io(dev->vm,
- dev,
- NVRAM_DATA_PORT,
- DEVICE_EMULATED,
- DEVICE_READWRITE);
+
+ SerialPrint("nvram: reset device\n");
- return 0;
-}
+
-int nvram_deinit_device(struct vm_device *dev)
-{
+ data->dev_state = NVRAM_READY;
+ data->thereg=0;
- nvram_reset_device(dev);
- dev_mgr_unhook_device(dev->vm,dev);
-
return 0;
-}
+}
int nvram_start_device(struct vm_device *dev)
{
+ SerialPrint("nvram: start device\n");
return 0;
}
int nvram_stop_device(struct vm_device *dev)
{
+ SerialPrint("nvram: stop device\n");
return 0;
}
-int nvram_read_io_port(ushort_t port_read,
- void *address,
+
+int nvram_write_reg_port(ushort_t port,
+ void * src,
+ uint_t length,
+ struct vm_device * dev)
+{
+ struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+
+ memcpy(&(data->thereg), src, 1);
+ PrintDebug("Writing To NVRAM reg: 0x%x\n", data->thereg);
+
+
+ return 1;
+}
+
+int nvram_read_data_port(ushort_t port,
+ void * dst,
uint_t length,
- struct vm_device *dev)
+ struct vm_device * dev)
{
struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
- switch (port_read) {
- case NVRAM_REG_PORT:
- // nonsense
- memset(address,0,length);
- break;
- case NVRAM_DATA_PORT:
- memcpy(address,&(data->mem_state[data->thereg]),1);
- break;
- default:
- //bad
- return -1;
- }
- return 0;
+
+
+ memcpy(dst, &(data->mem_state[data->thereg]), 1);
+
+ PrintDebug("nvram_read_data_port(0x%x)=0x%x\n", data->thereg, data->mem_state[data->thereg]);
+
+ return 1;
}
-int nvram_write_io_port(ushort_t port_written,
- void *address,
+int nvram_write_data_port(ushort_t port,
+ void * src,
uint_t length,
- struct vm_device *dev)
+ struct vm_device * dev)
{
struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
- switch (port_written) {
- case NVRAM_REG_PORT:
- memcpy(&(data->thereg),address,1);
- break;
- case NVRAM_DATA_PORT:
- memcpy(&(data->mem_state[data->thereg]),address,1);
- break;
- default:
- //bad
- return -1;
- }
- return 0;
+ memcpy(&(data->mem_state[data->thereg]), src, 1);
+
+ PrintDebug("nvram_write_data_port(0x%x)=0x%x\n", data->thereg, data->mem_state[data->thereg]);
+
+ return 1;
}
-int nvram_read_mapped_memory(void *address_read,
- void *address,
- uint_t length,
- struct vm_device *dev)
-{
- return -1;
+
+int nvram_init_device(struct vm_device * dev) {
+
+ struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+
+ SerialPrint("nvram: init_device\n");
+
+ memset(data->mem_state, 0, NVRAM_REG_MAX);
+
+ // Would read state here
+ set_nvram_defaults(dev);
+
+ nvram_reset_device(dev);
+
+ // hook ports
+ dev_hook_io(dev, NVRAM_REG_PORT, NULL, &nvram_write_reg_port);
+ dev_hook_io(dev, NVRAM_DATA_PORT, &nvram_read_data_port, &nvram_write_data_port);
+
+ return 0;
}
-int nvram_write_mapped_memory(void *address_written,
- void *address,
- uint_t length,
- struct vm_device *dev)
+int nvram_deinit_device(struct vm_device *dev)
{
- return -1;
+
+
+ dev_unhook_io(dev, NVRAM_REG_PORT);
+ dev_unhook_io(dev, NVRAM_DATA_PORT);
+
+ nvram_reset_device(dev);
+ return 0;
}
-static struct vm_device nvram_template =
- { .init_device = nvram_init_device,
- .deinit_device = nvram_deinit_device,
- .reset_device = nvram_reset_device,
- .start_device = nvram_start_device,
- .stop_device = nvram_stop_device,
- .read_io_port = nvram_read_io_port,
- .write_io_port = nvram_write_io_port,
- .read_mapped_memory = nvram_read_mapped_memory,
- .write_mapped_memory= nvram_write_mapped_memory,
- };
-struct vm_device *nvram_create()
-{
- struct vm_device *device = os_hooks->malloc(sizeof(struct vm_device));
+static struct vm_device_ops dev_ops = {
+ .init = nvram_init_device,
+ .deinit = nvram_deinit_device,
+ .reset = nvram_reset_device,
+ .start = nvram_start_device,
+ .stop = nvram_stop_device,
+};
+
+
+
+
+struct vm_device *create_nvram() {
+ struct nvram_internal * nvram_state = os_hooks->malloc(sizeof(struct nvram_internal)+1000);
+
+ SerialPrint("internal at %x\n",nvram_state);
- *device = nvram_template;
+ struct vm_device *device = create_device("NVRAM", &dev_ops, nvram_state);
- device->private_data = os_hooks->malloc(sizeof(struct nvram_internal));
return device;
}