*/
-#include <devices/nvram.h>
+#include <palacios/vmm_dev_mgr.h>
#include <palacios/vmm.h>
#include <palacios/vmm_types.h>
+#include <palacios/vmm_lock.h>
-#ifndef DEBUG_NVRAM
+#include <devices/ide.h>
+#include <palacios/vmm_intr.h>
+#include <palacios/vmm_host_events.h>
+#include <palacios/vm_guest.h>
+
+#ifndef CONFIG_DEBUG_NVRAM
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
#define NVRAM_REG_SHUTDOWN_STATUS 0x0f
#define NVRAM_IBM_HD_DATA 0x12
+#define NVRAM_IDE_TRANSLATION 0x39
#define NVRAM_REG_FLOPPY_TYPE 0x10
#define NVRAM_REG_EQUIPMENT_BYTE 0x14
nvram_state_t dev_state;
uchar_t thereg;
uchar_t mem_state[NVRAM_REG_MAX];
+ uchar_t reg_map[NVRAM_REG_MAX / 8];
+
+ struct vm_device * ide;
+
+ v3_lock_t nvram_lock;
uint_t us; //microseconds - for clock update - zeroed every second
uint_t pus; //microseconds - for periodic interrupt - cleared every period
+static void set_reg_num(struct nvram_internal * nvram, uint8_t reg_num) {
+ int major = (reg_num / 8);
+ int minor = reg_num % 8;
+
+ nvram->reg_map[major] |= (0x1 << minor);
+}
+
+static int is_reg_set(struct nvram_internal * nvram, uint8_t reg_num) {
+ int major = (reg_num / 8);
+ int minor = reg_num % 8;
+
+ return (nvram->reg_map[major] & (0x1 << minor)) ? 1 : 0;
+}
+
+
+static void set_memory(struct nvram_internal * nvram, uint8_t reg, uint8_t val) {
+ set_reg_num(nvram, reg);
+ nvram->mem_state[reg] = val;
+}
+
+static int get_memory(struct nvram_internal * nvram, uint8_t reg, uint8_t * val) {
+
+ if (!is_reg_set(nvram, reg)) {
+ *val = 0;
+ return -1;
+ }
+
+ *val = nvram->mem_state[reg];
+ return 0;
+}
+
+
static uchar_t add_to(uchar_t * left, uchar_t * right, uchar_t bcd) {
uchar_t temp;
}
-static uchar_t days_in_month(struct vm_device * dev, uchar_t month, uchar_t bcd) {
+static uchar_t days_in_month(uchar_t month, uchar_t bcd) {
// This completely ignores Julian / Gregorian stuff right now
if (bcd) {
}
-static void update_time(struct vm_device * dev, uint_t period_us) {
+static void update_time( struct vm_device * dev, uint_t period_us) {
struct nvram_internal * data = (struct nvram_internal *) (dev->private_data);
struct rtc_stata * stata = (struct rtc_stata *) &((data->mem_state[NVRAM_REG_STAT_A]));
struct rtc_statb * statb = (struct rtc_statb *) &((data->mem_state[NVRAM_REG_STAT_B]));
*weekday %= 0x7; // same regardless of bcd
- if ((*monthday) != days_in_month(dev, *month, bcd)) {
+ if ((*monthday) != days_in_month(*month, bcd)) {
add_to(monthday, &carry, bcd);
} else {
*monthday = 0x1;
struct vm_device * dev = (struct vm_device *)priv_data;
if (dev) {
+ struct nvram_internal * data = (struct nvram_internal *) (dev->private_data);
+
+ addr_t irq_state = v3_lock_irqsave(data->nvram_lock);
update_time(dev, evt->period_us);
+ v3_unlock_irqrestore(data->nvram_lock, irq_state);
}
return 0;
// 3. Big Mem: 0-4G in 64K
if (bytes > 640 * 1024) {
- nvram->mem_state[NVRAM_REG_BASE_MEMORY_HIGH] = 0x02;
- nvram->mem_state[NVRAM_REG_BASE_MEMORY_LOW] = 0x80;
+ set_memory(nvram, NVRAM_REG_BASE_MEMORY_HIGH, 0x02);
+ set_memory(nvram, NVRAM_REG_BASE_MEMORY_LOW, 0x80);
+
+ // nvram->mem_state[NVRAM_REG_BASE_MEMORY_HIGH] = 0x02;
+ // nvram->mem_state[NVRAM_REG_BASE_MEMORY_LOW] = 0x80;
} else {
uint16_t memk = bytes * 1024;
- nvram->mem_state[NVRAM_REG_BASE_MEMORY_HIGH] = (memk >> 8) & 0x00ff;
- nvram->mem_state[NVRAM_REG_BASE_MEMORY_LOW] = memk & 0x00ff;
+ set_memory(nvram, NVRAM_REG_BASE_MEMORY_HIGH, (memk >> 8) & 0x00ff);
+ set_memory(nvram, NVRAM_REG_BASE_MEMORY_LOW, memk & 0x00ff);
return;
}
if (bytes > (16 * 1024 * 1024)) {
// Set extended memory to 15 MB
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_HIGH] = 0x3C;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_LOW] = 0x00;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_2ND_HIGH]= 0x3C;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_2ND_LOW]= 0x00;
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_HIGH, 0x3C);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_LOW, 0x00);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_2ND_HIGH, 0x3C);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_2ND_LOW, 0x00);
} else {
uint16_t memk = bytes * 1024;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_HIGH] = (memk >> 8) & 0x00ff;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_LOW] = memk & 0x00ff;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_2ND_HIGH]= (memk >> 8) & 0x00ff;
- nvram->mem_state[NVRAM_REG_EXT_MEMORY_2ND_LOW]= memk & 0x00ff;
+
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_HIGH, (memk >> 8) & 0x00ff);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_LOW, memk & 0x00ff);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_2ND_HIGH, (memk >> 8) & 0x00ff);
+ set_memory(nvram, NVRAM_REG_EXT_MEMORY_2ND_LOW, memk & 0x00ff);
return;
}
{
// Set the extended memory beyond 16 MB in 64k chunks
uint16_t mem_chunks = (bytes - (1024 * 1024 * 16)) / (1024 * 64);
- nvram->mem_state[NVRAM_REG_AMI_BIG_MEMORY_HIGH] = (mem_chunks >> 8) & 0x00ff;
- nvram->mem_state[NVRAM_REG_AMI_BIG_MEMORY_LOW] = mem_chunks & 0x00ff;
+
+ set_memory(nvram, NVRAM_REG_AMI_BIG_MEMORY_HIGH, (mem_chunks >> 8) & 0x00ff);
+ set_memory(nvram, NVRAM_REG_AMI_BIG_MEMORY_LOW, mem_chunks & 0x00ff);
}
return;
}
+
+
+static void init_harddrives(struct nvram_internal * nvram) {
+ uint8_t hd_data = 0;
+ uint32_t cyls;
+ uint32_t sects;
+ uint32_t heads;
+ int i = 0;
+ int info_base_reg = 0x1b;
+ int type_reg = 0x19;
+
+ // 0x19 == first drive type
+ // 0x1a == second drive type
+
+ // 0x1b == first drive geometry base
+ // 0x24 == second drive geometry base
+
+ // It looks like the BIOS only tracks the disks on the first channel at 0x12?
+ for (i = 0; i < 2; i++) {
+ if (v3_ide_get_geometry(nvram->ide, 0, i, &cyls, &heads, §s) == 0) {
+
+ int info_reg = info_base_reg + (i * 9);
+
+ set_memory(nvram, type_reg + i, 0x2f);
+
+ set_memory(nvram, info_reg, cyls & 0xff);
+ set_memory(nvram, info_reg + 1, (cyls >> 8) & 0xff);
+ set_memory(nvram, info_reg + 2, heads & 0xff);
+
+ // Write precomp cylinder (1 and 2)
+ set_memory(nvram, info_reg + 3, 0xff);
+ set_memory(nvram, info_reg + 4, 0xff);
+
+ // harddrive control byte
+ set_memory(nvram, info_reg + 5, 0xc0 | ((heads > 8) << 3));
+
+ set_memory(nvram, info_reg + 6, cyls & 0xff);
+ set_memory(nvram, info_reg + 7, (cyls >> 8) & 0xff);
+
+ set_memory(nvram, info_reg + 8, sects & 0xff);
+
+ hd_data |= (0xf0 >> (i * 4));
+ }
+ }
+
+ set_memory(nvram, NVRAM_IBM_HD_DATA, hd_data);
+
+ {
+#define TRANSLATE_NONE 0x0
+#define TRANSLATE_LBA 0x1
+#define TRANSLATE_LARGE 0x2
+#define TRANSLATE_RECHS 0x3
+ // We're going to do LBA translation for everything...
+ uint8_t trans = 0;
+
+ for (i = 0; i < 4; i++) {
+ int chan_num = i / 2;
+ int drive_num = i % 2;
+ uint32_t tmp[3];
+
+ if (v3_ide_get_geometry(nvram->ide, chan_num, drive_num, &tmp[0], &tmp[1], &tmp[2]) == 0) {
+ trans |= TRANSLATE_LBA << (i * 2);
+ }
+ }
+
+ set_memory(nvram, NVRAM_IDE_TRANSLATION, trans);
+ }
+}
+
static int init_nvram_state(struct vm_device * dev) {
struct guest_info * info = dev->vm;
- struct nvram_internal * nvram_state = (struct nvram_internal *)dev->private_data;
+ struct nvram_internal * nvram = (struct nvram_internal *)dev->private_data;
- memset(nvram_state->mem_state, 0, NVRAM_REG_MAX);
+ memset(nvram->mem_state, 0, NVRAM_REG_MAX);
+ memset(nvram->reg_map, 0, NVRAM_REG_MAX / 8);
+
+ v3_lock_init(&(nvram->nvram_lock));
//
// 2 1.44 MB floppy drives
//
#if 1
- nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE] = 0x44;
+ set_memory(nvram, NVRAM_REG_FLOPPY_TYPE, 0x44);
#else
- nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE] = 0x00;
+ set_memory(nvram, NVRAM_REG_FLOPPY_TYPE, 0x00);
#endif
//
// For old boot sequence style, do floppy first
//
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_OLD] = 0x10;
+ set_memory(nvram, 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;
+ set_memory(nvram, NVRAM_REG_BOOTSEQ_NEW_FIRST, 0x31);
+ set_memory(nvram, 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_memory(nvram, NVRAM_REG_BOOTSEQ_NEW_FIRST, 0x23);
+ set_memory(nvram, 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_memory(nvram, NVRAM_REG_EQUIPMENT_BYTE, 0x4f);
+ // set_memory(nvram, NVRAM_REG_EQUIPMENT_BYTE, 0xf);
- // 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;
+ set_memory(nvram, NVRAM_REG_SHUTDOWN_STATUS, 0x0);
// RTC status A
// 00100110 = no update in progress, base=32768 Hz, rate = 1024 Hz
- nvram_state->mem_state[NVRAM_REG_STAT_A] = 0x26;
+ set_memory(nvram, NVRAM_REG_STAT_A, 0x26);
// RTC status B
// 00000100 = not setting, no interrupts, blocked rect signal, bcd mode, 24 hour, normal time
- nvram_state->mem_state[NVRAM_REG_STAT_B] = 0x06;
+ set_memory(nvram, NVRAM_REG_STAT_B, 0x06);
// RTC status C
// No IRQ requested, result not do to any source
- nvram_state->mem_state[NVRAM_REG_STAT_C] = 0x00;
+ set_memory(nvram, NVRAM_REG_STAT_C, 0x00);
// RTC status D
// Battery is OK
- nvram_state->mem_state[NVRAM_REG_STAT_D] = 0x80;
+ set_memory(nvram, NVRAM_REG_STAT_D, 0x80);
// january 1, 2008, 00:00:00
- nvram_state->mem_state[NVRAM_REG_MONTH] = 0x1;
- nvram_state->mem_state[NVRAM_REG_MONTH_DAY] = 0x1;
- nvram_state->mem_state[NVRAM_REG_WEEK_DAY] = 0x1;
- nvram_state->mem_state[NVRAM_REG_YEAR] = 0x08;
-
- nvram_state->us = 0;
- nvram_state->pus = 0;
-
- set_memory_size(nvram_state, info->mem_size);
+ set_memory(nvram, NVRAM_REG_SEC, 0x00);
+ set_memory(nvram, NVRAM_REG_SEC_ALARM, 0x00);
+ set_memory(nvram, NVRAM_REG_MIN, 0x00);
+ set_memory(nvram, NVRAM_REG_MIN_ALARM, 0x00);
+ set_memory(nvram, NVRAM_REG_HOUR, 0x00);
+ set_memory(nvram, NVRAM_REG_HOUR_ALARM, 0x00);
+
+ set_memory(nvram, NVRAM_REG_MONTH, 0x01);
+ set_memory(nvram, NVRAM_REG_MONTH_DAY, 0x1);
+ set_memory(nvram, NVRAM_REG_WEEK_DAY, 0x1);
+ set_memory(nvram, NVRAM_REG_YEAR, 0x08);
+
+ set_memory(nvram, NVRAM_REG_DIAGNOSTIC_STATUS, 0x00);
+
+ nvram->us = 0;
+ nvram->pus = 0;
- nvram_state->dev_state = NVRAM_READY;
- nvram_state->thereg = 0;
+ set_memory_size(nvram, info->mem_size);
+ init_harddrives(nvram);
+
+ nvram->dev_state = NVRAM_READY;
+ nvram->thereg = 0;
return 0;
}
void * src,
uint_t length,
struct vm_device * dev) {
- struct nvram_internal * data = (struct nvram_internal *)dev->private_data;
+ 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;
}
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);
+ addr_t irq_state = v3_lock_irqsave(data->nvram_lock);
+
+ if (get_memory(data, data->thereg, (uint8_t *)dst) == -1) {
+ PrintError("Register %d (0x%x) Not set\n", data->thereg, data->thereg);
- PrintDebug("nvram_read_data_port(0x%x)=0x%x\n", data->thereg, data->mem_state[data->thereg]);
+ v3_unlock_irqrestore(data->nvram_lock, irq_state);
+
+ return -1;
+ }
+
+ PrintDebug("nvram_read_data_port(0x%x) = 0x%x\n", data->thereg, *(uint8_t *)dst);
// hack
if (data->thereg == NVRAM_REG_STAT_A) {
data->mem_state[data->thereg] ^= 0x80; // toggle Update in progess
}
+ v3_unlock_irqrestore(data->nvram_lock, irq_state);
return 1;
}
+
static 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);
+ addr_t irq_state = v3_lock_irqsave(data->nvram_lock);
- PrintDebug("nvram_write_data_port(0x%x)=0x%x\n", data->thereg, data->mem_state[data->thereg]);
+ set_memory(data, data->thereg, *(uint8_t *)src);
- return 1;
-}
+ v3_unlock_irqrestore(data->nvram_lock, irq_state);
+ PrintDebug("nvram_write_data_port(0x%x) = 0x%x\n",
+ data->thereg, data->mem_state[data->thereg]);
+ return 1;
+}
-static int nvram_init_device(struct vm_device * dev) {
- PrintDebug("nvram: init_device\n");
-
- init_nvram_state(dev);
- // hook ports
- v3_dev_hook_io(dev, NVRAM_REG_PORT, NULL, &nvram_write_reg_port);
- v3_dev_hook_io(dev, NVRAM_DATA_PORT, &nvram_read_data_port, &nvram_write_data_port);
-
- v3_hook_host_event(dev->vm, HOST_TIMER_EVT, V3_HOST_EVENT_HANDLER(handle_timer_event), dev);
- return 0;
-}
-static int nvram_deinit_device(struct vm_device * dev) {
+static int nvram_free(struct vm_device * dev) {
v3_dev_unhook_io(dev, NVRAM_REG_PORT);
v3_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,
+static struct v3_device_ops dev_ops = {
+ .free = nvram_free,
.reset = nvram_reset_device,
.start = nvram_start_device,
.stop = nvram_stop_device,
-struct vm_device * v3_create_nvram() {
+
+static int nvram_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
struct nvram_internal * nvram_state = NULL;
+ struct vm_device * ide = v3_find_dev(vm, v3_cfg_val(cfg, "storage"));
+ char * name = v3_cfg_val(cfg, "name");
+
+ if (!ide) {
+ PrintError("Could not find IDE device\n");
+ return -1;
+ }
+ PrintDebug("nvram: init_device\n");
nvram_state = (struct nvram_internal *)V3_Malloc(sizeof(struct nvram_internal) + 1000);
PrintDebug("nvram: internal at %p\n", (void *)nvram_state);
- struct vm_device * device = v3_create_device("NVRAM", &dev_ops, nvram_state);
+ nvram_state->ide = ide;
+
+ struct vm_device * dev = v3_allocate_device(name, &dev_ops, nvram_state);
+
- return device;
+ if (v3_attach_device(vm, dev) == -1) {
+ PrintError("Could not attach device %s\n", name);
+ return -1;
+ }
+
+ init_nvram_state(dev);
+
+ // hook ports
+ v3_dev_hook_io(dev, NVRAM_REG_PORT, NULL, &nvram_write_reg_port);
+ v3_dev_hook_io(dev, NVRAM_DATA_PORT, &nvram_read_data_port, &nvram_write_data_port);
+
+ v3_hook_host_event(vm, HOST_TIMER_EVT, V3_HOST_EVENT_HANDLER(handle_timer_event), dev);
+
+ return 0;
}
+
+device_register("NVRAM", nvram_init)
