/*
* ACPI implementation
- *
+ *
* Copyright (c) 2006 Fabrice Bellard
- *
+ *
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2 as published by the Free Software Foundation.
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
-#include "vl.h"
+#include "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "qemu-timer.h"
+#include "sysemu.h"
+#include "i2c.h"
+#include "smbus.h"
+#include "kvm.h"
//#define DEBUG
#define PM_FREQ 3579545
#define ACPI_DBG_IO_ADDR 0xb044
-#define SMB_IO_BASE 0xb100
typedef struct PIIX4PMState {
PCIDevice dev;
uint8_t apms;
QEMUTimer *tmr_timer;
int64_t tmr_overflow_time;
- SMBusDevice *smb_dev[128];
+ i2c_bus *smbus;
uint8_t smb_stat;
uint8_t smb_ctl;
uint8_t smb_cmd;
uint8_t smb_data1;
uint8_t smb_data[32];
uint8_t smb_index;
+ qemu_irq irq;
} PIIX4PMState;
+#define RSM_STS (1 << 15)
+#define PWRBTN_STS (1 << 8)
#define RTC_EN (1 << 10)
#define PWRBTN_EN (1 << 8)
#define GBL_EN (1 << 5)
#define SUS_EN (1 << 13)
+#define ACPI_ENABLE 0xf1
+#define ACPI_DISABLE 0xf0
+
#define SMBHSTSTS 0x00
#define SMBHSTCNT 0x02
#define SMBHSTCMD 0x03
#define SMBHSTDAT1 0x06
#define SMBBLKDAT 0x07
-/* Note: only used for piix4_smbus_register_device */
-static PIIX4PMState *piix4_pm_state;
+static PIIX4PMState *pm_state;
static uint32_t get_pmtmr(PIIX4PMState *s)
{
uint32_t d;
- d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
+ d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, get_ticks_per_sec());
return d & 0xffffff;
}
int64_t d;
int pmsts;
pmsts = s->pmsts;
- d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
+ d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, get_ticks_per_sec());
if (d >= s->tmr_overflow_time)
s->pmsts |= TMROF_EN;
- return pmsts;
+ return s->pmsts;
}
static void pm_update_sci(PIIX4PMState *s)
{
int sci_level, pmsts;
int64_t expire_time;
-
+
pmsts = get_pmsts(s);
- sci_level = (((pmsts & s->pmen) &
+ sci_level = (((pmsts & s->pmen) &
(RTC_EN | PWRBTN_EN | GBL_EN | TMROF_EN)) != 0);
- qemu_set_irq(s->dev.irq[0], sci_level);
+ qemu_set_irq(s->irq, sci_level);
/* schedule a timer interruption if needed */
if ((s->pmen & TMROF_EN) && !(pmsts & TMROF_EN)) {
- expire_time = muldiv64(s->tmr_overflow_time, ticks_per_sec, PM_FREQ);
+ expire_time = muldiv64(s->tmr_overflow_time, get_ticks_per_sec(), PM_FREQ);
qemu_mod_timer(s->tmr_timer, expire_time);
} else {
qemu_del_timer(s->tmr_timer);
pmsts = get_pmsts(s);
if (pmsts & val & TMROF_EN) {
/* if TMRSTS is reset, then compute the new overflow time */
- d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
+ d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ,
+ get_ticks_per_sec());
s->tmr_overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
}
s->pmsts &= ~val;
s->pmcntrl = val & ~(SUS_EN);
if (val & SUS_EN) {
/* change suspend type */
- sus_typ = (val >> 10) & 3;
+ sus_typ = (val >> 10) & 7;
switch(sus_typ) {
case 0: /* soft power off */
qemu_system_shutdown_request();
break;
+ case 1:
+ /* RSM_STS should be set on resume. Pretend that resume
+ was caused by power button */
+ s->pmsts |= (RSM_STS | PWRBTN_STS);
+ qemu_system_reset_request();
+#if defined(TARGET_I386)
+ cmos_set_s3_resume();
+#endif
default:
break;
}
#endif
if (addr == 0) {
s->apmc = val;
+
+ /* ACPI specs 3.0, 4.7.2.5 */
+ if (val == ACPI_ENABLE) {
+ s->pmcntrl |= SCI_EN;
+ } else if (val == ACPI_DISABLE) {
+ s->pmcntrl &= ~SCI_EN;
+ }
+
if (s->dev.config[0x5b] & (1 << 1)) {
cpu_interrupt(first_cpu, CPU_INTERRUPT_SMI);
}
{
PIIX4PMState *s = opaque;
uint32_t val;
-
+
addr &= 1;
if (addr == 0) {
val = s->apmc;
uint8_t read = s->smb_addr & 0x01;
uint8_t cmd = s->smb_cmd;
uint8_t addr = s->smb_addr >> 1;
- SMBusDevice *dev = s->smb_dev[addr];
+ i2c_bus *bus = s->smbus;
#ifdef DEBUG
printf("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
#endif
- if (!dev) goto error;
-
switch(prot) {
case 0x0:
- if (!dev->quick_cmd) goto error;
- (*dev->quick_cmd)(dev, read);
+ smbus_quick_command(bus, addr, read);
break;
case 0x1:
if (read) {
- if (!dev->receive_byte) goto error;
- s->smb_data0 = (*dev->receive_byte)(dev);
- }
- else {
- if (!dev->send_byte) goto error;
- (*dev->send_byte)(dev, cmd);
+ s->smb_data0 = smbus_receive_byte(bus, addr);
+ } else {
+ smbus_send_byte(bus, addr, cmd);
}
break;
case 0x2:
if (read) {
- if (!dev->read_byte) goto error;
- s->smb_data0 = (*dev->read_byte)(dev, cmd);
- }
- else {
- if (!dev->write_byte) goto error;
- (*dev->write_byte)(dev, cmd, s->smb_data0);
+ s->smb_data0 = smbus_read_byte(bus, addr, cmd);
+ } else {
+ smbus_write_byte(bus, addr, cmd, s->smb_data0);
}
break;
case 0x3:
if (read) {
uint16_t val;
- if (!dev->read_word) goto error;
- val = (*dev->read_word)(dev, cmd);
+ val = smbus_read_word(bus, addr, cmd);
s->smb_data0 = val;
s->smb_data1 = val >> 8;
- }
- else {
- if (!dev->write_word) goto error;
- (*dev->write_word)(dev, cmd, (s->smb_data1 << 8) | s->smb_data0);
+ } else {
+ smbus_write_word(bus, addr, cmd, (s->smb_data1 << 8) | s->smb_data0);
}
break;
case 0x5:
if (read) {
- if (!dev->read_block) goto error;
- s->smb_data0 = (*dev->read_block)(dev, cmd, s->smb_data);
- }
- else {
- if (!dev->write_block) goto error;
- (*dev->write_block)(dev, cmd, s->smb_data0, s->smb_data);
+ s->smb_data0 = smbus_read_block(bus, addr, cmd, s->smb_data);
+ } else {
+ smbus_write_block(bus, addr, cmd, s->smb_data, s->smb_data0);
}
break;
default:
if (s->dev.config[0x80] & 1) {
pm_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x40));
- pm_io_base &= 0xfffe;
+ pm_io_base &= 0xffc0;
/* XXX: need to improve memory and ioport allocation */
#if defined(DEBUG)
}
}
-static void pm_write_config(PCIDevice *d,
+static void pm_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
pci_default_write_config(d, address, val, len);
pm_io_space_update((PIIX4PMState *)d);
}
-static void pm_save(QEMUFile* f,void *opaque)
+static int vmstate_acpi_post_load(void *opaque)
{
PIIX4PMState *s = opaque;
- pci_device_save(&s->dev, f);
-
- qemu_put_be16s(f, &s->pmsts);
- qemu_put_be16s(f, &s->pmen);
- qemu_put_be16s(f, &s->pmcntrl);
- qemu_put_8s(f, &s->apmc);
- qemu_put_8s(f, &s->apms);
- qemu_put_timer(f, s->tmr_timer);
- qemu_put_be64s(f, &s->tmr_overflow_time);
+ pm_io_space_update(s);
+ return 0;
}
-static int pm_load(QEMUFile* f,void* opaque,int version_id)
+static const VMStateDescription vmstate_acpi = {
+ .name = "piix4_pm",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .post_load = vmstate_acpi_post_load,
+ .fields = (VMStateField []) {
+ VMSTATE_PCI_DEVICE(dev, PIIX4PMState),
+ VMSTATE_UINT16(pmsts, PIIX4PMState),
+ VMSTATE_UINT16(pmen, PIIX4PMState),
+ VMSTATE_UINT16(pmcntrl, PIIX4PMState),
+ VMSTATE_UINT8(apmc, PIIX4PMState),
+ VMSTATE_UINT8(apms, PIIX4PMState),
+ VMSTATE_TIMER(tmr_timer, PIIX4PMState),
+ VMSTATE_INT64(tmr_overflow_time, PIIX4PMState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void piix4_reset(void *opaque)
{
PIIX4PMState *s = opaque;
- int ret;
-
- if (version_id > 1)
- return -EINVAL;
+ uint8_t *pci_conf = s->dev.config;
- ret = pci_device_load(&s->dev, f);
- if (ret < 0)
- return ret;
+ pci_conf[0x58] = 0;
+ pci_conf[0x59] = 0;
+ pci_conf[0x5a] = 0;
+ pci_conf[0x5b] = 0;
- qemu_get_be16s(f, &s->pmsts);
- qemu_get_be16s(f, &s->pmen);
- qemu_get_be16s(f, &s->pmcntrl);
- qemu_get_8s(f, &s->apmc);
- qemu_get_8s(f, &s->apms);
- qemu_get_timer(f, s->tmr_timer);
- qemu_get_be64s(f, &s->tmr_overflow_time);
+ if (kvm_enabled()) {
+ /* Mark SMM as already inited (until KVM supports SMM). */
+ pci_conf[0x5B] = 0x02;
+ }
+}
- pm_io_space_update(s);
+static void piix4_powerdown(void *opaque, int irq, int power_failing)
+{
+#if defined(TARGET_I386)
+ PIIX4PMState *s = opaque;
- return 0;
+ if (!s) {
+ qemu_system_shutdown_request();
+ } else if (s->pmen & PWRBTN_EN) {
+ s->pmsts |= PWRBTN_EN;
+ pm_update_sci(s);
+ }
+#endif
}
-void piix4_pm_init(PCIBus *bus, int devfn)
+i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
+ qemu_irq sci_irq)
{
PIIX4PMState *s;
uint8_t *pci_conf;
- uint32_t pm_io_base, smb_io_base;
s = (PIIX4PMState *)pci_register_device(bus,
"PM", sizeof(PIIX4PMState),
devfn, NULL, pm_write_config);
+ pm_state = s;
pci_conf = s->dev.config;
- pci_conf[0x00] = 0x86;
- pci_conf[0x01] = 0x80;
- pci_conf[0x02] = 0x13;
- pci_conf[0x03] = 0x71;
- pci_conf[0x08] = 0x00; // revision number
+ pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
+ pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_3);
+ pci_conf[0x06] = 0x80;
+ pci_conf[0x07] = 0x02;
+ pci_conf[0x08] = 0x03; // revision number
pci_conf[0x09] = 0x00;
- pci_conf[0x0a] = 0x80; // other bridge device
- pci_conf[0x0b] = 0x06; // bridge device
- pci_conf[0x0e] = 0x00; // header_type
+ pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_OTHER);
+ pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
pci_conf[0x3d] = 0x01; // interrupt pin 1
-
+
pci_conf[0x40] = 0x01; /* PM io base read only bit */
-
+
register_ioport_write(0xb2, 2, 1, pm_smi_writeb, s);
register_ioport_read(0xb2, 2, 1, pm_smi_readb, s);
register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
+ if (kvm_enabled()) {
+ /* Mark SMM as already inited to prevent SMM from running. KVM does not
+ * support SMM mode. */
+ pci_conf[0x5B] = 0x02;
+ }
+
/* XXX: which specification is used ? The i82731AB has different
mappings */
pci_conf[0x5f] = (parallel_hds[0] != NULL ? 0x80 : 0) | 0x10;
pci_conf[0x67] = (serial_hds[0] != NULL ? 0x08 : 0) |
(serial_hds[1] != NULL ? 0x90 : 0);
- smb_io_base = SMB_IO_BASE;
pci_conf[0x90] = smb_io_base | 1;
pci_conf[0x91] = smb_io_base >> 8;
pci_conf[0xd2] = 0x09;
s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
- register_savevm("piix4_pm", 0, 1, pm_save, pm_load, s);
- piix4_pm_state = s;
+ qemu_system_powerdown = *qemu_allocate_irqs(piix4_powerdown, s, 1);
+
+ vmstate_register(0, &vmstate_acpi, s);
+
+ s->smbus = i2c_init_bus(NULL, "i2c");
+ s->irq = sci_irq;
+ qemu_register_reset(piix4_reset, s);
+
+ return s->smbus;
}
-void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr)
+#define GPE_BASE 0xafe0
+#define PCI_BASE 0xae00
+#define PCI_EJ_BASE 0xae08
+
+struct gpe_regs {
+ uint16_t sts; /* status */
+ uint16_t en; /* enabled */
+};
+
+struct pci_status {
+ uint32_t up;
+ uint32_t down;
+};
+
+static struct gpe_regs gpe;
+static struct pci_status pci0_status;
+
+static uint32_t gpe_read_val(uint16_t val, uint32_t addr)
+{
+ if (addr & 1)
+ return (val >> 8) & 0xff;
+ return val & 0xff;
+}
+
+static uint32_t gpe_readb(void *opaque, uint32_t addr)
+{
+ uint32_t val = 0;
+ struct gpe_regs *g = opaque;
+ switch (addr) {
+ case GPE_BASE:
+ case GPE_BASE + 1:
+ val = gpe_read_val(g->sts, addr);
+ break;
+ case GPE_BASE + 2:
+ case GPE_BASE + 3:
+ val = gpe_read_val(g->en, addr);
+ break;
+ default:
+ break;
+ }
+
+#if defined(DEBUG)
+ printf("gpe read %x == %x\n", addr, val);
+#endif
+ return val;
+}
+
+static void gpe_write_val(uint16_t *cur, int addr, uint32_t val)
+{
+ if (addr & 1)
+ *cur = (*cur & 0xff) | (val << 8);
+ else
+ *cur = (*cur & 0xff00) | (val & 0xff);
+}
+
+static void gpe_reset_val(uint16_t *cur, int addr, uint32_t val)
+{
+ uint16_t x1, x0 = val & 0xff;
+ int shift = (addr & 1) ? 8 : 0;
+
+ x1 = (*cur >> shift) & 0xff;
+
+ x1 = x1 & ~x0;
+
+ *cur = (*cur & (0xff << (8 - shift))) | (x1 << shift);
+}
+
+static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ struct gpe_regs *g = opaque;
+ switch (addr) {
+ case GPE_BASE:
+ case GPE_BASE + 1:
+ gpe_reset_val(&g->sts, addr, val);
+ break;
+ case GPE_BASE + 2:
+ case GPE_BASE + 3:
+ gpe_write_val(&g->en, addr, val);
+ break;
+ default:
+ break;
+ }
+
+#if defined(DEBUG)
+ printf("gpe write %x <== %d\n", addr, val);
+#endif
+}
+
+static uint32_t pcihotplug_read(void *opaque, uint32_t addr)
{
- piix4_pm_state->smb_dev[addr] = dev;
+ uint32_t val = 0;
+ struct pci_status *g = opaque;
+ switch (addr) {
+ case PCI_BASE:
+ val = g->up;
+ break;
+ case PCI_BASE + 4:
+ val = g->down;
+ break;
+ default:
+ break;
+ }
+
+#if defined(DEBUG)
+ printf("pcihotplug read %x == %x\n", addr, val);
+#endif
+ return val;
+}
+
+static void pcihotplug_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ struct pci_status *g = opaque;
+ switch (addr) {
+ case PCI_BASE:
+ g->up = val;
+ break;
+ case PCI_BASE + 4:
+ g->down = val;
+ break;
+ }
+
+#if defined(DEBUG)
+ printf("pcihotplug write %x <== %d\n", addr, val);
+#endif
+}
+
+static uint32_t pciej_read(void *opaque, uint32_t addr)
+{
+#if defined(DEBUG)
+ printf("pciej read %x\n", addr);
+#endif
+ return 0;
+}
+
+static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
+{
+#if defined (TARGET_I386)
+ int slot = ffs(val) - 1;
+
+ pci_device_hot_remove_success(0, slot);
+#endif
+
+#if defined(DEBUG)
+ printf("pciej write %x <== %d\n", addr, val);
+#endif
+}
+
+static void piix4_device_hot_add(int bus, int slot, int state);
+
+void piix4_acpi_system_hot_add_init(void)
+{
+ register_ioport_write(GPE_BASE, 4, 1, gpe_writeb, &gpe);
+ register_ioport_read(GPE_BASE, 4, 1, gpe_readb, &gpe);
+
+ register_ioport_write(PCI_BASE, 8, 4, pcihotplug_write, &pci0_status);
+ register_ioport_read(PCI_BASE, 8, 4, pcihotplug_read, &pci0_status);
+
+ register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, NULL);
+ register_ioport_read(PCI_EJ_BASE, 4, 4, pciej_read, NULL);
+
+ qemu_system_device_hot_add_register(piix4_device_hot_add);
+}
+
+static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
+{
+ g->sts |= 2;
+ p->up |= (1 << slot);
+}
+
+static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
+{
+ g->sts |= 2;
+ p->down |= (1 << slot);
+}
+
+static void piix4_device_hot_add(int bus, int slot, int state)
+{
+ pci0_status.up = 0;
+ pci0_status.down = 0;
+ if (state)
+ enable_device(&pci0_status, &gpe, slot);
+ else
+ disable_device(&pci0_status, &gpe, slot);
+ if (gpe.en & 2) {
+ qemu_set_irq(pm_state->irq, 1);
+ qemu_set_irq(pm_state->irq, 0);
+ }
+}
+
+static qemu_system_device_hot_add_t device_hot_add_callback;
+void qemu_system_device_hot_add_register(qemu_system_device_hot_add_t callback)
+{
+ device_hot_add_callback = callback;
+}
+
+void qemu_system_device_hot_add(int pcibus, int slot, int state)
+{
+ if (device_hot_add_callback)
+ device_hot_add_callback(pcibus, slot, state);
+}
+
+struct acpi_table_header
+{
+ char signature [4]; /* ACPI signature (4 ASCII characters) */
+ uint32_t length; /* Length of table, in bytes, including header */
+ uint8_t revision; /* ACPI Specification minor version # */
+ uint8_t checksum; /* To make sum of entire table == 0 */
+ char oem_id [6]; /* OEM identification */
+ char oem_table_id [8]; /* OEM table identification */
+ uint32_t oem_revision; /* OEM revision number */
+ char asl_compiler_id [4]; /* ASL compiler vendor ID */
+ uint32_t asl_compiler_revision; /* ASL compiler revision number */
+} __attribute__((packed));
+
+char *acpi_tables;
+size_t acpi_tables_len;
+
+static int acpi_checksum(const uint8_t *data, int len)
+{
+ int sum, i;
+ sum = 0;
+ for(i = 0; i < len; i++)
+ sum += data[i];
+ return (-sum) & 0xff;
+}
+
+int acpi_table_add(const char *t)
+{
+ static const char *dfl_id = "QEMUQEMU";
+ char buf[1024], *p, *f;
+ struct acpi_table_header acpi_hdr;
+ unsigned long val;
+ size_t off;
+
+ memset(&acpi_hdr, 0, sizeof(acpi_hdr));
+
+ if (get_param_value(buf, sizeof(buf), "sig", t)) {
+ strncpy(acpi_hdr.signature, buf, 4);
+ } else {
+ strncpy(acpi_hdr.signature, dfl_id, 4);
+ }
+ if (get_param_value(buf, sizeof(buf), "rev", t)) {
+ val = strtoul(buf, &p, 10);
+ if (val > 255 || *p != '\0')
+ goto out;
+ } else {
+ val = 1;
+ }
+ acpi_hdr.revision = (int8_t)val;
+
+ if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
+ strncpy(acpi_hdr.oem_id, buf, 6);
+ } else {
+ strncpy(acpi_hdr.oem_id, dfl_id, 6);
+ }
+
+ if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
+ strncpy(acpi_hdr.oem_table_id, buf, 8);
+ } else {
+ strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
+ }
+
+ if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
+ val = strtol(buf, &p, 10);
+ if(*p != '\0')
+ goto out;
+ } else {
+ val = 1;
+ }
+ acpi_hdr.oem_revision = cpu_to_le32(val);
+
+ if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
+ strncpy(acpi_hdr.asl_compiler_id, buf, 4);
+ } else {
+ strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
+ }
+
+ if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
+ val = strtol(buf, &p, 10);
+ if(*p != '\0')
+ goto out;
+ } else {
+ val = 1;
+ }
+ acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
+
+ if (!get_param_value(buf, sizeof(buf), "data", t)) {
+ buf[0] = '\0';
+ }
+
+ acpi_hdr.length = sizeof(acpi_hdr);
+
+ f = buf;
+ while (buf[0]) {
+ struct stat s;
+ char *n = strchr(f, ':');
+ if (n)
+ *n = '\0';
+ if(stat(f, &s) < 0) {
+ fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
+ goto out;
+ }
+ acpi_hdr.length += s.st_size;
+ if (!n)
+ break;
+ *n = ':';
+ f = n + 1;
+ }
+
+ if (!acpi_tables) {
+ acpi_tables_len = sizeof(uint16_t);
+ acpi_tables = qemu_mallocz(acpi_tables_len);
+ }
+ p = acpi_tables + acpi_tables_len;
+ acpi_tables_len += sizeof(uint16_t) + acpi_hdr.length;
+ acpi_tables = qemu_realloc(acpi_tables, acpi_tables_len);
+
+ acpi_hdr.length = cpu_to_le32(acpi_hdr.length);
+ *(uint16_t*)p = acpi_hdr.length;
+ p += sizeof(uint16_t);
+ memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
+ off = sizeof(acpi_hdr);
+
+ f = buf;
+ while (buf[0]) {
+ struct stat s;
+ int fd;
+ char *n = strchr(f, ':');
+ if (n)
+ *n = '\0';
+ fd = open(f, O_RDONLY);
+
+ if(fd < 0)
+ goto out;
+ if(fstat(fd, &s) < 0) {
+ close(fd);
+ goto out;
+ }
+
+ do {
+ int r;
+ r = read(fd, p + off, s.st_size);
+ if (r > 0) {
+ off += r;
+ s.st_size -= r;
+ } else if ((r < 0 && errno != EINTR) || r == 0) {
+ close(fd);
+ goto out;
+ }
+ } while(s.st_size);
+
+ close(fd);
+ if (!n)
+ break;
+ f = n + 1;
+ }
+
+ ((struct acpi_table_header*)p)->checksum = acpi_checksum((uint8_t*)p, off);
+ /* increase number of tables */
+ (*(uint16_t*)acpi_tables) =
+ cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);
+ return 0;
+out:
+ if (acpi_tables) {
+ free(acpi_tables);
+ acpi_tables = NULL;
+ }
+ return -1;
}
projects / qemu / blobdiff