X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fnvram.c;h=565c183d1ea2eb5f35c66d61bab01d4176ed9372;hp=1244f90355af20ad5159f61033dfb2c3d0cc197a;hb=123a1ba27ea09c8fa77a1b36ce625b43d7c48b14;hpb=4bc3ee757b44d3e466fd89e348106c47fa5511ee diff --git a/palacios/src/devices/nvram.c b/palacios/src/devices/nvram.c index 1244f90..565c183 100644 --- a/palacios/src/devices/nvram.c +++ b/palacios/src/devices/nvram.c @@ -18,12 +18,18 @@ */ -#include +#include #include #include +#include -#ifndef DEBUG_NVRAM +#include +#include +#include +#include + +#ifndef CONFIG_DEBUG_NVRAM #undef PrintDebug #define PrintDebug(fmt, args...) #endif @@ -61,6 +67,7 @@ typedef enum {NVRAM_READY, NVRAM_REG_POSTED} nvram_state_t; #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 @@ -92,6 +99,11 @@ struct nvram_internal { 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 @@ -138,6 +150,38 @@ struct bcd_num { +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; @@ -168,7 +212,7 @@ static uchar_t add_to(uchar_t * left, uchar_t * right, uchar_t bcd) { } -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) { @@ -226,7 +270,7 @@ static uchar_t days_in_month(struct vm_device * dev, uchar_t month, uchar_t 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])); @@ -349,7 +393,7 @@ static void update_time(struct vm_device * dev, uint_t period_us) { *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; @@ -420,7 +464,11 @@ static int handle_timer_event(struct guest_info * info, 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; @@ -434,28 +482,32 @@ static void set_memory_size(struct nvram_internal * nvram, addr_t bytes) { // 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; } @@ -463,88 +515,168 @@ static void set_memory_size(struct nvram_internal * nvram, addr_t bytes) { { // 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; } @@ -579,12 +711,12 @@ static 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; + 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; } @@ -592,55 +724,58 @@ static 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); + 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; } @@ -648,9 +783,8 @@ static int nvram_deinit_device(struct vm_device * dev) { -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, @@ -659,14 +793,41 @@ static struct vm_device_ops dev_ops = { -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)