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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1910 c046a42c-6fe2-441c-8c8c-71466251a162
611 lines
22 KiB
C
611 lines
22 KiB
C
/*
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* ACPI implementation
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "vl.h"
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//#define DEBUG
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/* i82731AB (PIIX4) compatible power management function */
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#define PM_FREQ 3579545
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/* XXX: make them variable */
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#define PM_IO_BASE 0xb000
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#define SMI_CMD_IO_ADDR 0xb040
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#define ACPI_DBG_IO_ADDR 0xb044
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typedef struct PIIX4PMState {
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PCIDevice dev;
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uint16_t pmsts;
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uint16_t pmen;
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uint16_t pmcntrl;
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QEMUTimer *tmr_timer;
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int64_t tmr_overflow_time;
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} PIIX4PMState;
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#define RTC_EN (1 << 10)
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#define PWRBTN_EN (1 << 8)
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#define GBL_EN (1 << 5)
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#define TMROF_EN (1 << 0)
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#define SCI_EN (1 << 0)
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#define SUS_EN (1 << 13)
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/* Note: only used for ACPI bios init. Could be deleted when ACPI init
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is integrated in Bochs BIOS */
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static PIIX4PMState *piix4_pm_state;
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static uint32_t get_pmtmr(PIIX4PMState *s)
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{
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uint32_t d;
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d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
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return d & 0xffffff;
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}
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static int get_pmsts(PIIX4PMState *s)
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{
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int64_t d;
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int pmsts;
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pmsts = s->pmsts;
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d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
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if (d >= s->tmr_overflow_time)
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s->pmsts |= TMROF_EN;
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return pmsts;
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}
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static void pm_update_sci(PIIX4PMState *s)
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{
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int sci_level, pmsts;
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int64_t expire_time;
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pmsts = get_pmsts(s);
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sci_level = (((pmsts & s->pmen) &
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(RTC_EN | PWRBTN_EN | GBL_EN | TMROF_EN)) != 0);
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pci_set_irq(&s->dev, 0, sci_level);
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/* schedule a timer interruption if needed */
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if ((s->pmen & TMROF_EN) && !(pmsts & TMROF_EN)) {
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expire_time = muldiv64(s->tmr_overflow_time, ticks_per_sec, PM_FREQ);
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qemu_mod_timer(s->tmr_timer, expire_time);
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} else {
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qemu_del_timer(s->tmr_timer);
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}
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}
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static void pm_tmr_timer(void *opaque)
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{
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PIIX4PMState *s = opaque;
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pm_update_sci(s);
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}
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static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
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{
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PIIX4PMState *s = opaque;
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addr &= 0x3f;
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switch(addr) {
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case 0x00:
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{
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int64_t d;
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int pmsts;
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pmsts = get_pmsts(s);
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if (pmsts & val & TMROF_EN) {
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/* if TMRSTS is reset, then compute the new overflow time */
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d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
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s->tmr_overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
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}
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s->pmsts &= ~val;
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pm_update_sci(s);
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}
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break;
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case 0x02:
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s->pmen = val;
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pm_update_sci(s);
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break;
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case 0x04:
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{
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int sus_typ;
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s->pmcntrl = val & ~(SUS_EN);
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if (val & SUS_EN) {
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/* change suspend type */
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sus_typ = (val >> 10) & 3;
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switch(sus_typ) {
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case 0: /* soft power off */
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qemu_system_shutdown_request();
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break;
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default:
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break;
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}
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}
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}
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break;
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default:
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break;
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}
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#ifdef DEBUG
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printf("PM writew port=0x%04x val=0x%04x\n", addr, val);
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#endif
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}
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static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
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{
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PIIX4PMState *s = opaque;
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uint32_t val;
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addr &= 0x3f;
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switch(addr) {
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case 0x00:
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val = get_pmsts(s);
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break;
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case 0x02:
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val = s->pmen;
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break;
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case 0x04:
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val = s->pmcntrl;
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break;
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default:
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val = 0;
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break;
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}
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#ifdef DEBUG
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printf("PM readw port=0x%04x val=0x%04x\n", addr, val);
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#endif
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return val;
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}
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static void pm_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
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{
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// PIIX4PMState *s = opaque;
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addr &= 0x3f;
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#ifdef DEBUG
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printf("PM writel port=0x%04x val=0x%08x\n", addr, val);
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#endif
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}
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static uint32_t pm_ioport_readl(void *opaque, uint32_t addr)
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{
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PIIX4PMState *s = opaque;
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uint32_t val;
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addr &= 0x3f;
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switch(addr) {
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case 0x08:
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val = get_pmtmr(s);
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break;
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default:
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val = 0;
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break;
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}
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#ifdef DEBUG
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printf("PM readl port=0x%04x val=0x%08x\n", addr, val);
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#endif
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return val;
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}
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static void smi_cmd_writeb(void *opaque, uint32_t addr, uint32_t val)
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{
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PIIX4PMState *s = opaque;
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#ifdef DEBUG
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printf("SMI cmd val=0x%02x\n", val);
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#endif
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switch(val) {
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case 0xf0: /* ACPI disable */
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s->pmcntrl &= ~SCI_EN;
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break;
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case 0xf1: /* ACPI enable */
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s->pmcntrl |= SCI_EN;
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break;
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}
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}
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static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val)
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{
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#if defined(DEBUG)
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printf("ACPI: DBG: 0x%08x\n", val);
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#endif
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}
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/* XXX: we still add it to the PIIX3 and we count on the fact that
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OSes are smart enough to accept this strange configuration */
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void piix4_pm_init(PCIBus *bus)
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{
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PIIX4PMState *s;
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uint8_t *pci_conf;
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uint32_t pm_io_base;
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s = (PIIX4PMState *)pci_register_device(bus,
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"PM", sizeof(PIIX4PMState),
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((PCIDevice *)piix3_state)->devfn + 3,
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NULL, NULL);
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pci_conf = s->dev.config;
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pci_conf[0x00] = 0x86;
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pci_conf[0x01] = 0x80;
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pci_conf[0x02] = 0x13;
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pci_conf[0x03] = 0x71;
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pci_conf[0x08] = 0x00; // revision number
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pci_conf[0x09] = 0x00;
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pci_conf[0x0a] = 0x80; // other bridge device
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pci_conf[0x0b] = 0x06; // bridge device
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pci_conf[0x0e] = 0x00; // header_type
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pci_conf[0x3d] = 0x01; // interrupt pin 1
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pci_conf[0x60] = 0x10; // release number
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pm_io_base = PM_IO_BASE;
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pci_conf[0x40] = pm_io_base | 1;
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pci_conf[0x41] = pm_io_base >> 8;
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register_ioport_write(pm_io_base, 64, 2, pm_ioport_writew, s);
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register_ioport_read(pm_io_base, 64, 2, pm_ioport_readw, s);
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register_ioport_write(pm_io_base, 64, 4, pm_ioport_writel, s);
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register_ioport_read(pm_io_base, 64, 4, pm_ioport_readl, s);
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register_ioport_write(SMI_CMD_IO_ADDR, 1, 1, smi_cmd_writeb, s);
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register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
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s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
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piix4_pm_state = s;
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}
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/* ACPI tables */
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/* XXX: move them in the Bochs BIOS ? */
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/*************************************************/
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/* Table structure from Linux kernel (the ACPI tables are under the
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BSD license) */
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#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
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uint8_t signature [4]; /* ACPI signature (4 ASCII characters) */\
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uint32_t length; /* Length of table, in bytes, including header */\
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uint8_t revision; /* ACPI Specification minor version # */\
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uint8_t checksum; /* To make sum of entire table == 0 */\
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uint8_t oem_id [6]; /* OEM identification */\
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uint8_t oem_table_id [8]; /* OEM table identification */\
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uint32_t oem_revision; /* OEM revision number */\
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uint8_t asl_compiler_id [4]; /* ASL compiler vendor ID */\
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uint32_t asl_compiler_revision; /* ASL compiler revision number */
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struct acpi_table_header /* ACPI common table header */
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{
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ACPI_TABLE_HEADER_DEF
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};
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struct rsdp_descriptor /* Root System Descriptor Pointer */
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{
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uint8_t signature [8]; /* ACPI signature, contains "RSD PTR " */
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uint8_t checksum; /* To make sum of struct == 0 */
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uint8_t oem_id [6]; /* OEM identification */
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uint8_t revision; /* Must be 0 for 1.0, 2 for 2.0 */
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uint32_t rsdt_physical_address; /* 32-bit physical address of RSDT */
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uint32_t length; /* XSDT Length in bytes including hdr */
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uint64_t xsdt_physical_address; /* 64-bit physical address of XSDT */
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uint8_t extended_checksum; /* Checksum of entire table */
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uint8_t reserved [3]; /* Reserved field must be 0 */
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};
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/*
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* ACPI 1.0 Root System Description Table (RSDT)
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*/
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struct rsdt_descriptor_rev1
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{
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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uint32_t table_offset_entry [2]; /* Array of pointers to other */
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/* ACPI tables */
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};
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/*
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* ACPI 1.0 Firmware ACPI Control Structure (FACS)
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*/
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struct facs_descriptor_rev1
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{
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uint8_t signature[4]; /* ACPI Signature */
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uint32_t length; /* Length of structure, in bytes */
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uint32_t hardware_signature; /* Hardware configuration signature */
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uint32_t firmware_waking_vector; /* ACPI OS waking vector */
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uint32_t global_lock; /* Global Lock */
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uint32_t S4bios_f : 1; /* Indicates if S4BIOS support is present */
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uint32_t reserved1 : 31; /* Must be 0 */
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uint8_t resverved3 [40]; /* Reserved - must be zero */
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};
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/*
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* ACPI 1.0 Fixed ACPI Description Table (FADT)
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*/
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struct fadt_descriptor_rev1
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{
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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uint32_t firmware_ctrl; /* Physical address of FACS */
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uint32_t dsdt; /* Physical address of DSDT */
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uint8_t model; /* System Interrupt Model */
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uint8_t reserved1; /* Reserved */
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uint16_t sci_int; /* System vector of SCI interrupt */
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uint32_t smi_cmd; /* Port address of SMI command port */
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uint8_t acpi_enable; /* Value to write to smi_cmd to enable ACPI */
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uint8_t acpi_disable; /* Value to write to smi_cmd to disable ACPI */
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uint8_t S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
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uint8_t reserved2; /* Reserved - must be zero */
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uint32_t pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
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uint32_t pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
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uint32_t pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
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uint32_t pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
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uint32_t pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
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uint32_t pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
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uint32_t gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
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uint32_t gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
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uint8_t pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
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uint8_t pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
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uint8_t pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
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uint8_t pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
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uint8_t gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
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uint8_t gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
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uint8_t gpe1_base; /* Offset in gpe model where gpe1 events start */
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uint8_t reserved3; /* Reserved */
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uint16_t plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
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uint16_t plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
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uint16_t flush_size; /* Size of area read to flush caches */
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uint16_t flush_stride; /* Stride used in flushing caches */
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uint8_t duty_offset; /* Bit location of duty cycle field in p_cnt reg */
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uint8_t duty_width; /* Bit width of duty cycle field in p_cnt reg */
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uint8_t day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
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uint8_t mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
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uint8_t century; /* Index to century in RTC CMOS RAM */
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uint8_t reserved4; /* Reserved */
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uint8_t reserved4a; /* Reserved */
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uint8_t reserved4b; /* Reserved */
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#if 0
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uint32_t wb_invd : 1; /* The wbinvd instruction works properly */
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uint32_t wb_invd_flush : 1; /* The wbinvd flushes but does not invalidate */
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uint32_t proc_c1 : 1; /* All processors support C1 state */
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uint32_t plvl2_up : 1; /* C2 state works on MP system */
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uint32_t pwr_button : 1; /* Power button is handled as a generic feature */
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uint32_t sleep_button : 1; /* Sleep button is handled as a generic feature, or not present */
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uint32_t fixed_rTC : 1; /* RTC wakeup stat not in fixed register space */
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uint32_t rtcs4 : 1; /* RTC wakeup stat not possible from S4 */
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uint32_t tmr_val_ext : 1; /* The tmr_val width is 32 bits (0 = 24 bits) */
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uint32_t reserved5 : 23; /* Reserved - must be zero */
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#else
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uint32_t flags;
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#endif
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};
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/*
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* MADT values and structures
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*/
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/* Values for MADT PCATCompat */
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#define DUAL_PIC 0
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#define MULTIPLE_APIC 1
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/* Master MADT */
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struct multiple_apic_table
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{
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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uint32_t local_apic_address; /* Physical address of local APIC */
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#if 0
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uint32_t PCATcompat : 1; /* A one indicates system also has dual 8259s */
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uint32_t reserved1 : 31;
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#else
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uint32_t flags;
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#endif
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};
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/* Values for Type in APIC_HEADER_DEF */
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#define APIC_PROCESSOR 0
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#define APIC_IO 1
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#define APIC_XRUPT_OVERRIDE 2
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#define APIC_NMI 3
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#define APIC_LOCAL_NMI 4
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#define APIC_ADDRESS_OVERRIDE 5
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#define APIC_IO_SAPIC 6
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#define APIC_LOCAL_SAPIC 7
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#define APIC_XRUPT_SOURCE 8
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#define APIC_RESERVED 9 /* 9 and greater are reserved */
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/*
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* MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
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*/
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#define APIC_HEADER_DEF /* Common APIC sub-structure header */\
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uint8_t type; \
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uint8_t length;
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/* Sub-structures for MADT */
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struct madt_processor_apic
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{
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APIC_HEADER_DEF
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uint8_t processor_id; /* ACPI processor id */
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uint8_t local_apic_id; /* Processor's local APIC id */
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#if 0
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uint32_t processor_enabled: 1; /* Processor is usable if set */
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uint32_t reserved2 : 31; /* Reserved, must be zero */
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#else
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uint32_t flags;
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#endif
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};
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struct madt_io_apic
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{
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APIC_HEADER_DEF
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uint8_t io_apic_id; /* I/O APIC ID */
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uint8_t reserved; /* Reserved - must be zero */
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uint32_t address; /* APIC physical address */
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uint32_t interrupt; /* Global system interrupt where INTI
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* lines start */
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};
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#include "acpi-dsdt.hex"
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static int acpi_checksum(const uint8_t *data, int len)
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{
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int sum, i;
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sum = 0;
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for(i = 0; i < len; i++)
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sum += data[i];
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return (-sum) & 0xff;
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}
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static void acpi_build_table_header(struct acpi_table_header *h,
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char *sig, int len)
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{
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memcpy(h->signature, sig, 4);
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h->length = cpu_to_le32(len);
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h->revision = 0;
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memcpy(h->oem_id, "QEMU ", 6);
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memcpy(h->oem_table_id, "QEMU", 4);
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memcpy(h->oem_table_id + 4, sig, 4);
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h->oem_revision = cpu_to_le32(1);
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memcpy(h->asl_compiler_id, "QEMU", 4);
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h->asl_compiler_revision = cpu_to_le32(1);
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h->checksum = acpi_checksum((void *)h, len);
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}
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#define ACPI_TABLES_BASE 0x000e8000
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/* base_addr must be a multiple of 4KB */
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void acpi_bios_init(void)
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{
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struct rsdp_descriptor *rsdp;
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struct rsdt_descriptor_rev1 *rsdt;
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struct fadt_descriptor_rev1 *fadt;
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struct facs_descriptor_rev1 *facs;
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struct multiple_apic_table *madt;
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uint8_t *dsdt;
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uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr;
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uint32_t pm_io_base, acpi_tables_size, madt_addr, madt_size;
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int i;
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/* compute PCI I/O addresses */
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pm_io_base = (piix4_pm_state->dev.config[0x40] |
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(piix4_pm_state->dev.config[0x41] << 8)) & ~0x3f;
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base_addr = ACPI_TABLES_BASE;
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/* reserve memory space for tables */
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addr = base_addr;
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rsdp = (void *)(phys_ram_base + addr);
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addr += sizeof(*rsdp);
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rsdt_addr = addr;
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rsdt = (void *)(phys_ram_base + addr);
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addr += sizeof(*rsdt);
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fadt_addr = addr;
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fadt = (void *)(phys_ram_base + addr);
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addr += sizeof(*fadt);
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/* XXX: FACS should be in RAM */
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addr = (addr + 63) & ~63; /* 64 byte alignment for FACS */
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facs_addr = addr;
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facs = (void *)(phys_ram_base + addr);
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addr += sizeof(*facs);
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dsdt_addr = addr;
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dsdt = (void *)(phys_ram_base + addr);
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addr += sizeof(AmlCode);
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addr = (addr + 7) & ~7;
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madt_addr = addr;
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madt_size = sizeof(*madt) +
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sizeof(struct madt_processor_apic) * smp_cpus +
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sizeof(struct madt_io_apic);
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madt = (void *)(phys_ram_base + addr);
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addr += madt_size;
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acpi_tables_size = addr - base_addr;
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cpu_register_physical_memory(base_addr, acpi_tables_size,
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base_addr | IO_MEM_ROM);
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/* RSDP */
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memset(rsdp, 0, sizeof(*rsdp));
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memcpy(rsdp->signature, "RSD PTR ", 8);
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memcpy(rsdp->oem_id, "QEMU ", 6);
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rsdp->rsdt_physical_address = cpu_to_le32(rsdt_addr);
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rsdp->checksum = acpi_checksum((void *)rsdp, 20);
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/* RSDT */
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rsdt->table_offset_entry[0] = cpu_to_le32(fadt_addr);
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rsdt->table_offset_entry[1] = cpu_to_le32(madt_addr);
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acpi_build_table_header((struct acpi_table_header *)rsdt,
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"RSDT", sizeof(*rsdt));
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/* FADT */
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memset(fadt, 0, sizeof(*fadt));
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fadt->firmware_ctrl = cpu_to_le32(facs_addr);
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fadt->dsdt = cpu_to_le32(dsdt_addr);
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fadt->model = 1;
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fadt->reserved1 = 0;
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fadt->sci_int = cpu_to_le16(piix4_pm_state->dev.config[0x3c]);
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fadt->smi_cmd = cpu_to_le32(SMI_CMD_IO_ADDR);
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fadt->acpi_enable = 0xf1;
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fadt->acpi_disable = 0xf0;
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fadt->pm1a_evt_blk = cpu_to_le32(pm_io_base);
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fadt->pm1a_cnt_blk = cpu_to_le32(pm_io_base + 0x04);
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fadt->pm_tmr_blk = cpu_to_le32(pm_io_base + 0x08);
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fadt->pm1_evt_len = 4;
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fadt->pm1_cnt_len = 2;
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fadt->pm_tmr_len = 4;
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fadt->plvl2_lat = cpu_to_le16(50);
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fadt->plvl3_lat = cpu_to_le16(50);
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fadt->plvl3_lat = cpu_to_le16(50);
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/* WBINVD + PROC_C1 + PWR_BUTTON + SLP_BUTTON + FIX_RTC */
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fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 4) | (1 << 5) | (1 << 6));
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acpi_build_table_header((struct acpi_table_header *)fadt, "FACP",
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sizeof(*fadt));
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/* FACS */
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memset(facs, 0, sizeof(*facs));
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memcpy(facs->signature, "FACS", 4);
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facs->length = cpu_to_le32(sizeof(*facs));
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/* DSDT */
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memcpy(dsdt, AmlCode, sizeof(AmlCode));
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/* MADT */
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{
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struct madt_processor_apic *apic;
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struct madt_io_apic *io_apic;
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memset(madt, 0, madt_size);
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madt->local_apic_address = cpu_to_le32(0xfee00000);
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madt->flags = cpu_to_le32(1);
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apic = (void *)(madt + 1);
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for(i=0;i<smp_cpus;i++) {
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apic->type = APIC_PROCESSOR;
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apic->length = sizeof(*apic);
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apic->processor_id = i;
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apic->local_apic_id = i;
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apic->flags = cpu_to_le32(1);
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apic++;
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}
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io_apic = (void *)apic;
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io_apic->type = APIC_IO;
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io_apic->length = sizeof(*io_apic);
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io_apic->io_apic_id = smp_cpus;
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io_apic->address = cpu_to_le32(0xfec00000);
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io_apic->interrupt = cpu_to_le32(0);
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acpi_build_table_header((struct acpi_table_header *)madt,
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"APIC", madt_size);
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}
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}
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