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acpi: make bios_linker_loader_add_pointer() API offset based

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cleanup bios_linker_loader_add_pointer() API by switching
arguments to taking offsets relative to corresponding files
instead of doing pointer arithmetic on behalf of user which
were confusing.

Also make offset inside of source file explicit in API
so that user won't have to manually set it in
destination file blob and while at it add additional
boundary checks.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2016-05-19 15:19:29 +02:00 • committed by Michael S. Tsirkin
parent 9774ccf7cd
commit 4678124bb9
6 changed files with 83 additions and 75 deletions
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26
hw/arm/virt-acpi-build.c
View file

@ -354,9 +354,12 @@ static void acpi_dsdt_add_power_button(Aml *scope)
/* RSDP */
static GArray *
build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt)
build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt_tbl_offset)
{
AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
unsigned rsdt_pa_size = sizeof(rsdp->rsdt_physical_address);
unsigned rsdt_pa_offset =
(char *)&rsdp->rsdt_physical_address - rsdp_table->data;
bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
true /* fseg memory */);
@ -366,13 +369,11 @@ build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt)
rsdp->length = cpu_to_le32(sizeof(*rsdp));
rsdp->revision = 0x02;
/* Point to RSDT */
rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
/* Address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
ACPI_BUILD_TABLE_FILE,
&rsdp->rsdt_physical_address,
sizeof rsdp->rsdt_physical_address);
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_RSDP_FILE, rsdt_pa_offset, rsdt_pa_size,
ACPI_BUILD_TABLE_FILE, rsdt_tbl_offset);
rsdp->checksum = 0;
/* Checksum to be filled by Guest linker */
bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
@ -566,9 +567,10 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
/* FADT */
static void
build_fadt(GArray *table_data, BIOSLinker *linker, unsigned dsdt)
build_fadt(GArray *table_data, BIOSLinker *linker, unsigned dsdt_tbl_offset)
{
AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
unsigned dsdt_entry_offset = (char *)&fadt->dsdt - table_data->data;
/* Hardware Reduced = 1 and use PSCI 0.2+ and with HVC */
fadt->flags = cpu_to_le32(1 << ACPI_FADT_F_HW_REDUCED_ACPI);
@ -578,12 +580,10 @@ build_fadt(GArray *table_data, BIOSLinker *linker, unsigned dsdt)
/* ACPI v5.1 (fadt->revision.fadt->minor_revision) */
fadt->minor_revision = 0x1;
fadt->dsdt = cpu_to_le32(dsdt);
/* DSDT address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_FILE,
&fadt->dsdt,
sizeof fadt->dsdt);
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_TABLE_FILE, dsdt_entry_offset, sizeof(fadt->dsdt),
ACPI_BUILD_TABLE_FILE, dsdt_tbl_offset);
build_header(linker, table_data,
(void *)fadt, "FACP", sizeof(*fadt), 5, NULL, NULL);