[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-arm] [PATCH 6/8] hw: arm: Support both legacy and current RSDP
From: |
Igor Mammedov |
Subject: |
Re: [Qemu-arm] [PATCH 6/8] hw: arm: Support both legacy and current RSDP build |
Date: |
Tue, 27 Nov 2018 17:38:48 +0100 |
On Mon, 26 Nov 2018 17:29:39 +0100
Samuel Ortiz <address@hidden> wrote:
> We add the ability to build legacy or current RSDP tables, based on the
> AcpiRsdpData revision field passed to build_rsdp().
> Although arm/virt only uses RSDP v2, adding that capability to
> build_rsdp will allow us to share the RSDP build code between ARM and x86.
>
> Signed-off-by: Samuel Ortiz <address@hidden>
> ---
> hw/arm/virt-acpi-build.c | 26 +++++++++++++++++++++-----
> 1 file changed, 21 insertions(+), 5 deletions(-)
>
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index d47978a55e..10f8388b63 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -389,6 +389,27 @@ build_rsdp(GArray *tbl, BIOSLinker *linker, AcpiRsdpData
> *rsdp_data)
> /* Space for the RSDT address (32 bit) */
> build_append_int_noprefix(tbl, 0, 4);
>
> + if (rsdp_data->rsdt_tbl_offset) {
> + /* RSDT address to be filled by guest linker */
> + bios_linker_loader_add_pointer(linker,
> + ACPI_BUILD_RSDP_FILE, 16, 4,
> + ACPI_BUILD_TABLE_FILE,
> + *rsdp_data->rsdt_tbl_offset);
> + }
> +
> + /* Checksum to be filled by guest linker */
> + bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, 0,
> + ACPI_RSDP_REV_1_LEN,
> + ACPI_RSDP_CHECKSUM_OFFSET);
> +
> + if (rsdp_data->revision == ACPI_RSDP_REV_1) {
> + /* Legacy RSDP, we're done */
> + return;
> + }
> +
> + /* The RSDP revision is 2 and later, we must have an XSDT pointer */
> + g_assert(rsdp_data->xsdt_tbl_offset != NULL);
> +
> /* Length */
> build_append_int_noprefix(tbl, ACPI_RSDP_REV_2_LEN, ACPI_RSDP_LEN_LEN);
>
> @@ -406,11 +427,6 @@ build_rsdp(GArray *tbl, BIOSLinker *linker, AcpiRsdpData
> *rsdp_data)
> /* Space for the reserved bytes */
> build_append_int_noprefix(tbl, 0, ACPI_RSDP_RESERVED_LEN);
>
> - /* Checksum to be filled by guest linker */
> - bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, 0,
> - ACPI_RSDP_REV_1_LEN,
> - ACPI_RSDP_CHECKSUM_OFFSET);
> -
maybe put this hunk in 5/8 at the place where are you moving it here, so you
don't have to touch it twice
(I'll leave it up to you)
otherwise looks good
> /* Extended checksum to be filled by Guest linker */
> bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, 0,
> ACPI_RSDP_REV_2_LEN,
[Qemu-arm] [PATCH 7/8] hw: acpi: Export and share the ARM RSDP build, Samuel Ortiz, 2018/11/26
[Qemu-arm] [PATCH 6/8] hw: arm: Support both legacy and current RSDP build, Samuel Ortiz, 2018/11/26
- Re: [Qemu-arm] [PATCH 6/8] hw: arm: Support both legacy and current RSDP build,
Igor Mammedov <=
[Qemu-arm] [PATCH 8/8] hw: acpi: Remove AcpiRsdpDescriptor and fix tests, Samuel Ortiz, 2018/11/26