Re: [Qemu-devel] [PATCH 2/5] Provide SSDT for enabled TPM device

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

On 02/18/2011 10:33 AM, Andreas Niederl wrote:
> Signed-off-by: Andreas Niederl<andreas.niederl@iaik.tugraz.at>
> ---
>   Makefile.target |    3 +++
>   hw/acpi.c       |   28 ++++++++++++++++++++++++++++
>   hw/pc.h         |    1 +
>   hw/tpm.h        |    2 ++
>   hw/tpm_acpi.c   |   40 ++++++++++++++++++++++++++++++++++++++++
>   hw/tpm_ssdt.dsl |   55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   hw/tpm_ssdt.hex |   41 +++++++++++++++++++++++++++++++++++++++++
>   hw/tpm_tis.c    |    1 +
>   rules.mak       |    7 ++++++-
>   vl.c            |   23 +++++++++++++++++++++++
>   10 files changed, 200 insertions(+), 1 deletions(-)
>   create mode 100644 hw/tpm_acpi.c
>   create mode 100644 hw/tpm_ssdt.dsl
>   create mode 100644 hw/tpm_ssdt.hex
>
> diff --git a/Makefile.target b/Makefile.target
> index 5a0fd40..33ffe19 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -211,6 +211,9 @@ obj-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
>   # Inter-VM PCI shared memory
>   obj-$(CONFIG_KVM) += ivshmem.o
>
> +# TPM acpi support
> +obj-$(CONFIG_TPM) += tpm_acpi.o
> +
>   # Hardware support
>   obj-i386-y += vga.o
>   obj-i386-y += mc146818rtc.o i8259.o pc.o
> diff --git a/hw/acpi.c b/hw/acpi.c
> index 8071e7b..93656c5 100644
> --- a/hw/acpi.c
> +++ b/hw/acpi.c
> @@ -35,6 +35,34 @@ struct acpi_table_header
>   char *acpi_tables;
>   size_t acpi_tables_len;
>
> +
> +/*
> + * add a table directly (e.g. iasl C source output)
> + */
> +int acpi_table_add_raw(const char *t, uint32_t length)
> +{
> +    char *p;
> +
> +    if (!acpi_tables) {
> +        acpi_tables_len = sizeof(uint16_t);
> +        acpi_tables = qemu_mallocz(acpi_tables_len);
> +    }
> +    acpi_tables = qemu_realloc(acpi_tables,
> +                               acpi_tables_len + sizeof(uint16_t) + length);
> +    p = acpi_tables + acpi_tables_len;
> +    acpi_tables_len += sizeof(uint16_t) + length;
> +
> +    *(uint16_t*)p = cpu_to_le32(length);
> +    p += sizeof(uint16_t);
> +
> +    memcpy(p, t, length);
> +
> +    /* increase number of tables */
> +    (*(uint16_t*)acpi_tables) =
> +        cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);
> +    return 0;
> +}
> +
Does it show up in Linux? I am trying to find the code that connects it 
to the RSDT, but don't see any.

     Stefan