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From: Julien Grall <julien.grall@arm.com>
To: Shannon Zhao <zhaoshenglong@huawei.com>, xen-devel@lists.xen.org
Cc: stefano.stabellini@citrix.com, shannon.zhao@linaro.org,
	peter.huangpeng@huawei.com
Subject: Re: [PATCH v6 08/22] arm/acpi: Prepare RSDP table for Dom0
Date: Mon, 21 Mar 2016 15:47:33 +0000	[thread overview]
Message-ID: <56F01795.6010002@arm.com> (raw)
In-Reply-To: <1458207668-12012-9-git-send-email-zhaoshenglong@huawei.com>

Hi Shannon,

On 17/03/2016 09:40, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
>
> Copy RSDP table and replace rsdp->xsdt_physical_address with new address
                                                               ^ the
> of XSDT table, so it can point to the right XSDT table.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

With the 2 changes mentioned:

Acked-by: Julien Grall <julien.grall@arm.com>

> ---
>   xen/arch/arm/domain_build.c | 36 ++++++++++++++++++++++++++++++++++++
>   1 file changed, 36 insertions(+)
>
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index f9fe289..ea7d6a5 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -1357,6 +1357,38 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo)
>   }
>
>   #ifdef CONFIG_ACPI
> +static int acpi_create_rsdp(struct domain *d, struct membank tbl_add[])
> +{
> +
> +    struct acpi_table_rsdp *rsdp = NULL;
> +    u64 addr;
> +    u64 table_size = sizeof(struct acpi_table_rsdp);
> +    u8 *base_ptr;
> +    u8 checksum;
> +
> +    addr = acpi_os_get_root_pointer();
> +    if( !addr )
> +        panic("Unable to get acpi root pointer\n");

Please avoid panic when it's possible.

> +
> +    rsdp = acpi_os_map_memory(addr, table_size);
> +    base_ptr = d->arch.efi_acpi_table
> +               + acpi_get_table_offset(tbl_add, TBL_RSDP);
> +    ACPI_MEMCPY(base_ptr, rsdp, table_size);
> +    acpi_os_unmap_memory(rsdp, table_size);
> +
> +    rsdp = (struct acpi_table_rsdp *)base_ptr;
> +    /* Replace xsdt_physical_address */
> +    rsdp->xsdt_physical_address = tbl_add[TBL_XSDT].start;
> +    checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, rsdp), table_size);
> +    rsdp->checksum = rsdp->checksum - checksum;
> +
> +    tbl_add[TBL_RSDP].start = d->arch.efi_acpi_gpa
> +                              + acpi_get_table_offset(tbl_add, TBL_RSDP);
> +    tbl_add[TBL_RSDP].size = table_size;
> +
> +    return 0;
> +}
> +
>   static void acpi_xsdt_modify_entry(u64 entry[], unsigned long entry_count,
>                                      char *signature, u64 addr)
>   {
> @@ -1625,6 +1657,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo)
>       if ( rc != 0 )
>           return rc;
>
> +    rc = acpi_create_rsdp(d, tbl_add);
> +    if ( rc != 0 )
> +        return rc;
> +
>       return 0;
>   }
>   #else
>

Regards,

-- 
Julien Grall

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  reply	other threads:[~2016-03-21 15:47 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-17  9:40 [PATCH v6 00/22] Prepare UEFI and ACPI tables for Dom0 on ARM64 Shannon Zhao
2016-03-17  9:40 ` [PATCH v6 01/22] arm/acpi: Estimate memory required for acpi/efi tables Shannon Zhao
2016-03-18 18:44   ` Julien Grall
2016-03-21 13:01     ` Jan Beulich
2016-03-22 13:01     ` Shannon Zhao
2016-03-22  0:28   ` Julien Grall
2016-03-24 12:36   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 02/22] arm/acpi: Add a helper function to get the acpi table offset Shannon Zhao
2016-03-21 12:16   ` Julien Grall
2016-03-24 12:32   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 03/22] arm/acpi: Prepare FADT table for Dom0 Shannon Zhao
2016-03-21 12:25   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 04/22] arm/gic: Add a new callback for creating MADT " Shannon Zhao
2016-03-21 15:18   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 05/22] arm/acpi: Prepare " Shannon Zhao
2016-03-21 15:26   ` Julien Grall
2016-03-21 15:51     ` Jan Beulich
2016-03-17  9:40 ` [PATCH v6 06/22] arm/acpi: Prepare STAO " Shannon Zhao
2016-03-21 15:31   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 07/22] arm/acpi: Prepare XSDT " Shannon Zhao
2016-03-21 15:43   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 08/22] arm/acpi: Prepare RSDP " Shannon Zhao
2016-03-21 15:47   ` Julien Grall [this message]
2016-03-17  9:40 ` [PATCH v6 09/22] arm/p2m: Add helper functions to map memory regions Shannon Zhao
2016-03-21 15:52   ` Julien Grall
2016-03-22 13:05     ` Shannon Zhao
2016-03-22 15:59       ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 10/22] arm/acpi: Map all other tables for Dom0 Shannon Zhao
2016-03-21 15:57   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 11/22] arm/acpi: Prepare EFI system table " Shannon Zhao
2016-03-21 16:10   ` Julien Grall
2016-03-22 13:06     ` Shannon Zhao
2016-03-22 13:24       ` Jan Beulich
2016-03-17  9:40 ` [PATCH v6 12/22] arm/acpi: Prepare EFI memory descriptor " Shannon Zhao
2016-03-21 16:51   ` Julien Grall
2016-03-22 13:16     ` Shannon Zhao
2016-03-22 16:04       ` Julien Grall
2016-03-24 15:06         ` Shannon Zhao
2016-03-24 15:23           ` Julien Grall
2016-03-24 12:39   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 13/22] arm/acpi: Map the new created EFI and ACPI tables to Dom0 Shannon Zhao
2016-03-22  0:42   ` Julien Grall
2016-03-22 13:18     ` Shannon Zhao
2016-03-22 16:16       ` Julien Grall
2016-03-24 14:59         ` Shannon Zhao
2016-03-24 15:35           ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 14/22] arm/acpi: Create min DT stub for Dom0 Shannon Zhao
2016-03-22  1:07   ` Julien Grall
2016-03-22 13:23     ` Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 15/22] arm/acpi: Permit access all Xen unused SPIs " Shannon Zhao
2016-03-22 18:18   ` Julien Grall
2016-03-24 15:01     ` Shannon Zhao
2016-03-24 15:37       ` Julien Grall
2016-03-25  7:13         ` Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 16/22] arm/acpi: Configure SPI interrupt type and route to Dom0 dynamically Shannon Zhao
2016-03-22 19:17   ` Julien Grall
2016-03-24 12:41   ` Stefano Stabellini
2016-03-17  9:41 ` [PATCH v6 17/22] arm/gic: Add a new callback to deny Dom0 access to GIC regions Shannon Zhao
2016-03-22 19:33   ` Julien Grall
2016-03-24 12:45     ` Stefano Stabellini
2016-03-24 15:03       ` Shannon Zhao
2016-03-24 15:39         ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 18/22] arm/acpi: Permit MMIO access of Xen unused devices for Dom0 Shannon Zhao
2016-03-23 11:50   ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 19/22] hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-03-17 10:42   ` Jan Beulich
2016-03-17 11:04     ` Shannon Zhao
2016-03-17 11:29       ` Jan Beulich
2016-03-17 11:56         ` Shannon Zhao
2016-03-17 12:42           ` Jan Beulich
2016-03-17  9:41 ` [PATCH v6 20/22] xen/acpi: Fix event-channel interrupt when booting with ACPI Shannon Zhao
2016-03-23 12:15   ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 21/22] xen/arm: Add a hypercall for device mmio mapping Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 22/22] xen/arm64: Add ACPI support Shannon Zhao
2016-03-17 10:52   ` Jan Beulich
2016-03-17 11:03     ` Shannon Zhao
2016-03-17 11:31       ` Jan Beulich
2016-03-17 13:10         ` Shannon Zhao
2016-03-17 13:24           ` Jan Beulich

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