diff options
Diffstat (limited to 'tools/firmware/hvmloader/acpi_madt.c')
| -rw-r--r-- | tools/firmware/hvmloader/acpi_madt.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/tools/firmware/hvmloader/acpi_madt.c b/tools/firmware/hvmloader/acpi_madt.c deleted file mode 100644 index 5a9c3063ae..0000000000 --- a/tools/firmware/hvmloader/acpi_madt.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * acpi_madt.c: Update ACPI MADT table for multiple processor guest. - * - * Yu Ke, ke.yu@intel.com - * Copyright (c) 2005, Intel Corporation. - * - * 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 "../acpi/acpi2_0.h" -#include "../acpi/acpi_madt.h" -#include "util.h" -#include <xen/hvm/hvm_info_table.h> - -#define NULL ((void*)0) - -static struct hvm_info_table *table = NULL; - -static int validate_hvm_info(struct hvm_info_table *t) -{ - char signature[] = "HVM INFO"; - uint8_t *ptr = (uint8_t *)t; - uint8_t sum = 0; - int i; - - /* strncmp(t->signature, "HVM INFO", 8) */ - for (i = 0; i < 8; i++) { - if (signature[i] != t->signature[i]) { - puts("Bad hvm info signature\n"); - return 0; - } - } - - for (i = 0; i < t->length; i++) - sum += ptr[i]; - - return (sum == 0); -} - -/* xc_vmx_builder wrote hvm info at 0x9F800. Return it. */ -struct hvm_info_table * -get_hvm_info_table(void) -{ - struct hvm_info_table *t; - - if (table != NULL) - return table; - - t = (struct hvm_info_table *)HVM_INFO_PADDR; - - if (!validate_hvm_info(t)) { - puts("Bad hvm info table\n"); - return NULL; - } - - table = t; - - return table; -} - -int -get_vcpu_nr(void) -{ - struct hvm_info_table *t = get_hvm_info_table(); - return (t ? t->nr_vcpus : 1); /* default 1 vcpu */ -} - -int -get_acpi_enabled(void) -{ - struct hvm_info_table *t = get_hvm_info_table(); - return (t ? t->acpi_enabled : 0); /* default no acpi */ -} - - -static void * -acpi_madt_get_madt(unsigned char *acpi_start) -{ - ACPI_2_0_RSDP *rsdp=NULL; - ACPI_2_0_RSDT *rsdt=NULL; - ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt; - - rsdp = (ACPI_2_0_RSDP *)(acpi_start + sizeof(ACPI_2_0_FACS)); - if (rsdp->Signature != ACPI_2_0_RSDP_SIGNATURE) { - puts("Bad RSDP signature\n"); - return NULL; - } - - rsdt= (ACPI_2_0_RSDT *) - (acpi_start + rsdp->RsdtAddress - ACPI_PHYSICAL_ADDRESS); - if (rsdt->Header.Signature != ACPI_2_0_RSDT_SIGNATURE) { - puts("Bad RSDT signature\n"); - return NULL; - } - - madt = (ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *) - ( acpi_start+ rsdt->Entry[1] - ACPI_PHYSICAL_ADDRESS); - if (madt->Header.Header.Signature != - ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE) { - puts("Bad MADT signature \n"); - return NULL; - } - - return madt; -} - -static void -set_checksum(void *start, int checksum_offset, int len) -{ - unsigned char sum = 0; - unsigned char *ptr; - - ptr = start; - ptr[checksum_offset] = 0; - while (len--) - sum += *ptr++; - - ptr = start; - ptr[checksum_offset] = -sum; -} - -static int -acpi_madt_set_local_apics( - int nr_vcpu, - ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt) -{ - int i; - - if ((nr_vcpu > MAX_VIRT_CPUS) || (nr_vcpu < 0) || !madt) - return -1; - - for (i = 0; i < nr_vcpu; i++) { - madt->LocalApic[i].Type = ACPI_PROCESSOR_LOCAL_APIC; - madt->LocalApic[i].Length = sizeof (ACPI_LOCAL_APIC_STRUCTURE); - madt->LocalApic[i].AcpiProcessorId = i; - madt->LocalApic[i].ApicId = i; - madt->LocalApic[i].Flags = 1; - } - - madt->Header.Header.Length = - sizeof(ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE) - - (MAX_VIRT_CPUS - nr_vcpu)* sizeof(ACPI_LOCAL_APIC_STRUCTURE); - - return 0; -} - -#define FIELD_OFFSET(TYPE,Field) ((unsigned int)(&(((TYPE *) 0)->Field))) - -int acpi_madt_update(unsigned char *acpi_start) -{ - int rc; - ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt; - - madt = acpi_madt_get_madt(acpi_start); - if (!madt) - return -1; - - rc = acpi_madt_set_local_apics(get_vcpu_nr(), madt); - if (rc != 0) - return rc; - - set_checksum( - madt, FIELD_OFFSET(ACPI_TABLE_HEADER, Checksum), - madt->Header.Header.Length); - - return 0; -} - -/* - * Local variables: - * c-file-style: "linux" - * indent-tabs-mode: t - * c-indent-level: 8 - * c-basic-offset: 8 - * tab-width: 8 - * End: - */ |