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hv: add ACPI support for pre-launched VMs

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Statically define the per vm RSDP/XSDT/MADT ACPI template tables in vacpi.c,
RSDP/XSDT tables are copied to guest physical memory after checksum is
calculated. For MADT table, first fix up process id/lapic id in its lapic
subtable, then the MADT table's checksum is calculated before it is copies to
guest physical memory.

Add 8-bit checksum function in util.h

Tracked-On: #3601
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
dongshen
2019-08-21 19:37:33 -07:00
committed by wenlingz
parent 96b422ce9d
commit b447ce3d86
7 changed files with 191 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
hypervisor/boot/include/acpi.h
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@@ -11,6 +11,7 @@
#define ACPI_RSDP_CHECKSUM_LENGTH 20U
#define ACPI_RSDP_XCHECKSUM_LENGTH 36U
#define ACPI_NAME_SIZE 4U
#define ACPI_OEM_ID_SIZE 6U
@@ -19,6 +20,7 @@
#define ACPI_MADT_TYPE_LOCAL_APIC 0U
#define ACPI_MADT_TYPE_IOAPIC 1U
#define ACPI_MADT_ENABLED 1U
#define ACPI_MADT_TYPE_LOCAL_APIC_NMI 4U
/* FACP field offsets */
#define OFFSET_FACS_ADDR 36U
@@ -37,6 +39,7 @@
#define ACPI_SIG_FADT "FACP" /* Fixed ACPI Description Table */
#define ACPI_SIG_FACS 0x53434146U /* "FACS" */
#define ACPI_SIG_RSDP "RSD PTR " /* Root System Description Ptr */
#define ACPI_SIG_XSDT "XSDT" /* Extended System Description Table */
#define ACPI_SIG_MADT "APIC" /* Multiple APIC Description Table */
#define ACPI_SIG_DMAR "DMAR"
@@ -127,13 +130,20 @@ struct acpi_madt_local_apic {
uint32_t lapic_flags;
} __packed;
struct acpi_madt_local_apic_nmi {
struct acpi_subtable_header header;
uint8_t processor_id;
uint16_t flags;
uint8_t lint;
} __packed;
struct acpi_madt_ioapic {
struct acpi_subtable_header header;
/* IOAPIC id */
uint8_t id;
uint8_t rsvd;
uint32_t addr;
uint32_t gsi_base;
uint8_t id;
uint8_t rsvd;
uint32_t addr;
uint32_t gsi_base;
} __packed;
enum acpi_dmar_type {