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/*
* Copyright (c) 2004, Intel Corporation.
* Copyright (c) 2006, Keir Fraser, XenSource Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License, version
* 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
#include "acpi2_0.h"
#include "../config.h"
#include "../util.h"
extern struct acpi_20_rsdp Rsdp;
extern struct acpi_20_rsdt Rsdt;
extern struct acpi_20_xsdt Xsdt;
extern struct acpi_20_fadt Fadt;
extern struct acpi_20_facs Facs;
extern unsigned char AmlCode[];
extern int DsdtLen;
static void set_checksum(
void *table, uint32_t checksum_offset, uint32_t length)
{
uint8_t *p, sum = 0;
p = table;
p[checksum_offset] = 0;
while ( length-- )
sum = sum + *p++;
p = table;
p[checksum_offset] = -sum;
}
int construct_madt(struct acpi_20_madt *madt)
{
struct acpi_20_madt_intsrcovr *intsrcovr;
struct acpi_20_madt_ioapic *io_apic;
struct acpi_20_madt_lapic *lapic;
int i, offset = 0;
memset(madt, 0, sizeof(*madt));
madt->header.signature = ACPI_2_0_MADT_SIGNATURE;
madt->header.revision = ACPI_2_0_MADT_REVISION;
strncpy(madt->header.oem_id, "INTEL ", 6);
madt->header.oem_table_id = ACPI_OEM_TABLE_ID;
madt->header.oem_revision = ACPI_OEM_REVISION;
madt->header.creator_id = ACPI_CREATOR_ID;
madt->header.creator_revision = ACPI_CREATOR_REVISION;
madt->lapic_addr = LAPIC_BASE_ADDRESS;
madt->flags = ACPI_PCAT_COMPAT;
offset += sizeof(*madt);
intsrcovr = (struct acpi_20_madt_intsrcovr *)(madt + 1);
for ( i = 0; i < 16; i++ )
{
if ( !(PCI_ISA_IRQ_MASK & (1U << i)) )
continue;
/* PCI: active-low level-triggered */
memset(intsrcovr, 0, sizeof(*intsrcovr));
intsrcovr->type = ACPI_INTERRUPT_SOURCE_OVERRIDE;
intsrcovr->length = sizeof(*intsrcovr);
intsrcovr->source = i;
intsrcovr->gsi = i;
intsrcovr->flags = 0xf;
offset += sizeof(*intsrcovr);
intsrcovr++;
}
io_apic = (struct acpi_20_madt_ioapic *)intsrcovr;
memset(io_apic, 0, sizeof(*io_apic));
io_apic->type = ACPI_IO_APIC;
io_apic->length = sizeof(*io_apic);
io_apic->ioapic_id = IOAPIC_ID;
io_apic->ioapic_addr = IOAPIC_BASE_ADDRESS;
offset += sizeof(*io_apic);
lapic = (struct acpi_20_madt_lapic *)(io_apic + 1);
for ( i = 0; i < get_vcpu_nr(); i++ )
{
memset(lapic, 0, sizeof(*lapic));
lapic->type = ACPI_PROCESSOR_LOCAL_APIC;
lapic->length = sizeof(*lapic);
lapic->acpi_processor_id = lapic->apic_id = i + 1;
lapic->flags = ACPI_LOCAL_APIC_ENABLED;
offset += sizeof(*lapic);
lapic++;
}
madt->header.length = offset;
set_checksum(madt, offsetof(struct acpi_header, checksum), offset);
return offset;
}
/*
* Copy all the ACPI table to buffer.
* Buffer layout: FACS, DSDT, FADT, MADT, XSDT, RSDT, RSDP.
*/
int acpi_build_tables(uint8_t *buf)
{
struct acpi_20_rsdp *rsdp;
struct acpi_20_rsdt *rsdt;
struct acpi_20_xsdt *xsdt;
struct acpi_20_fadt *fadt;
struct acpi_20_madt *madt = 0;
struct acpi_20_facs *facs;
unsigned char *dsdt;
int offset = 0, requires_madt;
requires_madt = ((get_vcpu_nr() > 1) || get_apic_mode());
#define inc_offset(sz) (offset = (offset + (sz) + 15) & ~15)
facs = (struct acpi_20_facs *)&buf[offset];
memcpy(facs, &Facs, sizeof(struct acpi_20_facs));
inc_offset(sizeof(struct acpi_20_facs));
dsdt = (unsigned char *)&buf[offset];
memcpy(dsdt, &AmlCode, DsdtLen);
inc_offset(DsdtLen);
fadt = (struct acpi_20_fadt *)&buf[offset];
memcpy(fadt, &Fadt, sizeof(struct acpi_20_fadt));
inc_offset(sizeof(struct acpi_20_fadt));
fadt->dsdt = (unsigned long)dsdt;
fadt->x_dsdt = (unsigned long)dsdt;
fadt->firmware_ctrl = (unsigned long)facs;
fadt->x_firmware_ctrl = (unsigned long)facs;
set_checksum(fadt,
offsetof(struct acpi_header, checksum),
sizeof(struct acpi_20_fadt));
if ( requires_madt )
{
madt = (struct acpi_20_madt *)&buf[offset];
inc_offset(construct_madt(madt));
}
xsdt = (struct acpi_20_xsdt *)&buf[offset];
memcpy(xsdt, &Xsdt, sizeof(struct acpi_20_xsdt));
inc_offset(sizeof(struct acpi_20_xsdt));
xsdt->entry[0] = (unsigned long)fadt;
xsdt->header.length = sizeof(struct acpi_header) + sizeof(uint64_t);
if ( requires_madt )
{
xsdt->entry[1] = (unsigned long)madt;
xsdt->header.length += sizeof(uint64_t);
}
set_checksum(xsdt,
offsetof(struct acpi_header, checksum),
xsdt->header.length);
rsdt = (struct acpi_20_rsdt *)&buf[offset];
memcpy(rsdt, &Rsdt, sizeof(struct acpi_20_rsdt));
inc_offset(sizeof(struct acpi_20_rsdt));
rsdt->entry[0] = (unsigned long)fadt;
rsdt->header.length = sizeof(struct acpi_header) + sizeof(uint32_t);
if ( requires_madt )
{
rsdt->entry[1] = (unsigned long)madt;
rsdt->header.length += sizeof(uint32_t);
}
set_checksum(rsdt,
offsetof(struct acpi_header, checksum),
rsdt->header.length);
rsdp = (struct acpi_20_rsdp *)&buf[offset];
memcpy(rsdp, &Rsdp, sizeof(struct acpi_20_rsdp));
inc_offset(sizeof(struct acpi_20_rsdp));
rsdp->rsdt_address = (unsigned long)rsdt;
rsdp->xsdt_address = (unsigned long)xsdt;
set_checksum(rsdp,
offsetof(struct acpi_10_rsdp, checksum),
sizeof(struct acpi_10_rsdp));
set_checksum(rsdp,
offsetof(struct acpi_20_rsdp, extended_checksum),
sizeof(struct acpi_20_rsdp));
#undef inc_offset
return offset;
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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