Re: [Xen-devel] [PATCH v5 11/22] arm/acpi: Prepare EFI system table for Dom0

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Fri, 4 Mar 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> 
> Prepare EFI system table for Dom0 to describe the information of UEFI.
> 
> Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx>
> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


> v5: move to efi-dom0.c
> ---
>  xen/arch/arm/domain_build.c |  2 ++
>  xen/arch/arm/efi/efi-dom0.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
>  xen/include/asm-arm/setup.h |  3 +++
>  3 files changed, 49 insertions(+)
> 
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index c71976c..613551c 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -1686,6 +1686,8 @@ static int prepare_acpi(struct domain *d, struct 
> kernel_info *kinfo)
>          return rc;
>  
>      acpi_map_other_tables(d);
> +    acpi_create_efi_system_table(d->arch.efi_acpi_gpa, 
> d->arch.efi_acpi_table,
> +                                 tbl_add);
>  
>      return 0;
>  }
> diff --git a/xen/arch/arm/efi/efi-dom0.c b/xen/arch/arm/efi/efi-dom0.c
> index d54c38f..36a1283 100644
> --- a/xen/arch/arm/efi/efi-dom0.c
> +++ b/xen/arch/arm/efi/efi-dom0.c
> @@ -46,3 +46,47 @@ size_t __init estimate_efi_size(int mem_nr_banks)
>  
>      return size;
>  }
> +
> +#include "../../../common/decompress.h"
> +#define XZ_EXTERN STATIC
> +#include "../../../common/xz/crc32.c"
> +
> +void __init acpi_create_efi_system_table(paddr_t paddr, void *efi_acpi_table,
> +                                         struct membank tbl_add[])
> +{
> +    u64 table_addr, table_size, offset = 0;
> +    u8 *base_ptr;
> +    EFI_CONFIGURATION_TABLE *efi_conf_tbl;
> +    EFI_SYSTEM_TABLE *efi_sys_tbl;
> +
> +    table_addr = paddr + acpi_get_table_offset(tbl_add, TBL_EFIT);
> +    table_size = sizeof(EFI_SYSTEM_TABLE) + sizeof(EFI_CONFIGURATION_TABLE)
> +                 + sizeof(xen_efi_fw_vendor);
> +    base_ptr = efi_acpi_table + acpi_get_table_offset(tbl_add, TBL_EFIT);
> +    efi_sys_tbl = (EFI_SYSTEM_TABLE *)base_ptr;
> +
> +    efi_sys_tbl->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;
> +    /* Specify the revision as 2.5 */
> +    efi_sys_tbl->Hdr.Revision = (2 << 16 | 50);
> +    efi_sys_tbl->Hdr.HeaderSize = table_size;
> +
> +    efi_sys_tbl->FirmwareRevision = 1;
> +    efi_sys_tbl->NumberOfTableEntries = 1;
> +    offset += sizeof(EFI_SYSTEM_TABLE);
> +    memcpy((CHAR16 *)(base_ptr + offset), xen_efi_fw_vendor,
> +           sizeof(xen_efi_fw_vendor));
> +    efi_sys_tbl->FirmwareVendor = (CHAR16 *)(table_addr + offset);
> +
> +    offset += sizeof(xen_efi_fw_vendor);
> +    efi_conf_tbl = (EFI_CONFIGURATION_TABLE *)(base_ptr + offset);
> +    efi_conf_tbl->VendorGuid = (EFI_GUID)ACPI_20_TABLE_GUID;
> +    efi_conf_tbl->VendorTable = (VOID *)tbl_add[TBL_RSDP].start;
> +    efi_sys_tbl->ConfigurationTable = (EFI_CONFIGURATION_TABLE *)(table_addr
> +                                                                  + offset);
> +    xz_crc32_init();
> +    efi_sys_tbl->Hdr.CRC32 = xz_crc32((uint8_t *)efi_sys_tbl,
> +                                      efi_sys_tbl->Hdr.HeaderSize, 0);
> +
> +    tbl_add[TBL_EFIT].start = table_addr;
> +    tbl_add[TBL_EFIT].size = table_size;
> +}
> diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h
> index 7f233a1..e423b15 100644
> --- a/xen/include/asm-arm/setup.h
> +++ b/xen/include/asm-arm/setup.h
> @@ -53,6 +53,9 @@ void copy_from_paddr(void *dst, paddr_t paddr, unsigned 
> long len);
>  
>  size_t estimate_efi_size(int mem_nr_banks);
>  
> +void acpi_create_efi_system_table(paddr_t paddr, void *efi_acpi_table,
> +                                  struct membank tbl_add[]);
> +
>  int construct_dom0(struct domain *d);
>  
>  void discard_initial_modules(void);
> -- 
> 2.0.4
> 
> 

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