#include #include #include 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; #define NVRAM_REG_MAX 256 // These are borrowed from Bochs, which borrowed from // 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_MIN_ALARM 0x03 #define NVRAM_REG_HOUR 0x04 #define NVRAM_REG_HOUR_ALARM 0x05 #define NVRAM_REG_WEEK_DAY 0x06 #define NVRAM_REG_MONTH_DAY 0x07 #define NVRAM_REG_MONTH 0x08 #define NVRAM_REG_YEAR 0x09 #define NVRAM_REG_STAT_A 0x0a #define NVRAM_REG_STAT_B 0x0b #define NVRAM_REG_STAT_C 0x0c #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 { nvram_state_t dev_state; uchar_t thereg; uchar_t mem_state[NVRAM_REG_MAX]; }; 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 // #if 1 nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE]= 0x44; #else nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE] = 0x00; #endif // // 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; //nvram_state->mem_state[NVRAM_REG_EQUIPMENT_BYTE] = 0xf; // 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; //nvram_state->mem_state[NVRAM_REG_AMI_BIG_MEMORY_HIGH]= 0x00; //nvram_state->mem_state[NVRAM_REG_AMI_BIG_MEMORY_LOW]= 0x00; // This is the harddisk type.... Set accordingly... nvram_state->mem_state[NVRAM_IBM_HD_DATA] = 0x20; // Set the shutdown status gently // soft reset nvram_state->mem_state[NVRAM_REG_SHUTDOWN_STATUS] = 0x0; // RTC status A // time update in progress, default timebase (32KHz, default interrupt rate 1KHz) // 10100110 nvram_state->mem_state[NVRAM_REG_STAT_A] = 0xa6; // RTC status B // time updates, default timebase (32KHz, default interrupt rate 1KHz) // 10100110 //nvram_state->mem_state[NVRAM_REG_STAT_B] = 0xa6; return 0; } int nvram_reset_device(struct vm_device * dev) { struct nvram_internal *data = (struct nvram_internal *) dev->private_data; SerialPrint("nvram: reset device\n"); data->dev_state = NVRAM_READY; data->thereg=0; 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_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 nvram_internal *data = (struct nvram_internal *) dev->private_data; 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]); // hack if (data->thereg==NVRAM_REG_STAT_A) { data->mem_state[data->thereg] ^= 0x80; // toggle Update in progess } return 1; } int nvram_write_data_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->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_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_deinit_device(struct vm_device *dev) { dev_unhook_io(dev, NVRAM_REG_PORT); dev_unhook_io(dev, NVRAM_DATA_PORT); nvram_reset_device(dev); return 0; } 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); struct vm_device *device = create_device("NVRAM", &dev_ops, nvram_state); return device; }