Commit d4bec5d8 authored by Shannon Zhao's avatar Shannon Zhao Committed by Peter Maydell
Browse files

hw/arm/virt-acpi-build: Generate RSDP table 



RSDP points to RSDT which in turn points to other tables.

Signed-off-by: default avatarShannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: default avatarShannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-id: 1432522520-8068-13-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 243bdb79

hw/arm/virt-acpi-build.c

+34 −1
Original line number Diff line number Diff line
@@ -151,6 +151,35 @@ static void acpi_dsdt_add_virtio(Aml *scope, 
    }

}



/* RSDP */

static GArray *

build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)

{

    AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);



    bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,

                             true /* fseg memory */);



    memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));

    memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));

    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_table, &rsdp->rsdt_physical_address,

                                   sizeof rsdp->rsdt_physical_address);

    rsdp->checksum = 0;

    /* Checksum to be filled by Guest linker */

    bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,

                                    rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);



    return rsdp_table;

}



/* GTDT */

static void

build_gtdt(GArray *table_data, GArray *linker)
@@ -285,7 +314,7 @@ static 
void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)

{

    GArray *table_offsets;

    unsigned dsdt;

    unsigned dsdt, rsdt;

    VirtAcpiCpuInfo cpuinfo;

    GArray *tables_blob = tables->table_data;
@@ -322,8 +351,12 @@ void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables) 
    build_gtdt(tables_blob, tables->linker);



    /* RSDT is pointed to by RSDP */

    rsdt = tables_blob->len;

    build_rsdt(tables_blob, tables->linker, table_offsets);



    /* RSDP is in FSEG memory, so allocate it separately */

    build_rsdp(tables->rsdp, tables->linker, rsdt);



    /* Cleanup memory that's no longer used. */

    g_array_free(table_offsets, true);

}