From: Sebastien Boeuf <[email protected]> Add a fallback on the SMBIOS code to find the SMBIOS table for Cloud Hypervisor if it couldn't be found for Qemu through fw_cfg.
Signed-off-by: Rob Bradford <[email protected]> Signed-off-by: Sebastien Boeuf <[email protected]> --- OvmfPkg/Include/IndustryStandard/CloudHv.h | 5 +++ OvmfPkg/SmbiosPlatformDxe/CloudHv.c | 32 +++++++++++++++++++ OvmfPkg/SmbiosPlatformDxe/EntryPoint.c | 23 +++++++++++-- .../SmbiosPlatformDxe/SmbiosPlatformDxe.inf | 1 + 4 files changed, 59 insertions(+), 2 deletions(-) create mode 100644 OvmfPkg/SmbiosPlatformDxe/CloudHv.c diff --git a/OvmfPkg/Include/IndustryStandard/CloudHv.h b/OvmfPkg/Include/IndustryStandard/CloudHv.h index 6ab18ad50d..ad0e170795 100644 --- a/OvmfPkg/Include/IndustryStandard/CloudHv.h +++ b/OvmfPkg/Include/IndustryStandard/CloudHv.h @@ -32,4 +32,9 @@ // #define CLOUDHV_MMIO_HOLE_SIZE 0x38000000 +// +// SMBIOS address +// +#define CLOUDHV_SMBIOS_ADDRESS 0xf0000 + #endif // __CLOUDHV_H__ diff --git a/OvmfPkg/SmbiosPlatformDxe/CloudHv.c b/OvmfPkg/SmbiosPlatformDxe/CloudHv.c new file mode 100644 index 0000000000..f56a810684 --- /dev/null +++ b/OvmfPkg/SmbiosPlatformDxe/CloudHv.c @@ -0,0 +1,32 @@ +/** @file + Find Cloud Hypervisor SMBIOS data. + + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include <IndustryStandard/CloudHv.h> // CLOUDHV_SMBIOS_ADDRESS +#include <IndustryStandard/SmBios.h> // SMBIOS_TABLE_3_0_ENTRY_POINT + +/** + Locates and extracts the QEMU SMBIOS data if present in fw_cfg + + @return Address of extracted QEMU SMBIOS data + +**/ +UINT8 * +GetCloudHvSmbiosTables ( + VOID + ) +{ + SMBIOS_TABLE_3_0_ENTRY_POINT *CloudHvTables = (VOID *)CLOUDHV_SMBIOS_ADDRESS; + + if (CloudHvTables->AnchorString[0] == '_' && + CloudHvTables->AnchorString[1] == 'S' && + CloudHvTables->AnchorString[2] == 'M' && + CloudHvTables->AnchorString[3] == '3' && + CloudHvTables->AnchorString[4] == '_') { + return (UINT8*)(UINTN)CloudHvTables->TableAddress; + } + + return NULL; +} diff --git a/OvmfPkg/SmbiosPlatformDxe/EntryPoint.c b/OvmfPkg/SmbiosPlatformDxe/EntryPoint.c index d3b1836a04..28faabb46a 100644 --- a/OvmfPkg/SmbiosPlatformDxe/EntryPoint.c +++ b/OvmfPkg/SmbiosPlatformDxe/EntryPoint.c @@ -8,6 +8,11 @@ #include "SmbiosPlatformDxe.h" +UINT8 * +GetCloudHvSmbiosTables ( + VOID + ); + UINT8 * GetQemuSmbiosTables ( VOID @@ -32,14 +37,28 @@ SmbiosTablePublishEntry ( { EFI_STATUS Status; UINT8 *SmbiosTables; + BOOLEAN FreeTables = FALSE; Status = EFI_NOT_FOUND; // // Add QEMU SMBIOS data if found // SmbiosTables = GetQemuSmbiosTables (); - if (SmbiosTables != NULL) { - Status = InstallAllStructures (SmbiosTables); + if (SmbiosTables == NULL) { + SmbiosTables = GetCloudHvSmbiosTables (); + if (SmbiosTables == NULL) { + return EFI_NOT_FOUND; + } + } else { + FreeTables = TRUE; + } + + Status = InstallAllStructures (SmbiosTables); + + // + // Free SmbiosTables if allocated by Qemu. + // + if (FreeTables) { FreePool (SmbiosTables); } diff --git a/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf index e239a631f2..365d96241e 100644 --- a/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf +++ b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf @@ -24,6 +24,7 @@ # [Sources] + CloudHv.c EntryPoint.c Qemu.c SmbiosPlatformDxe.c -- 2.30.2 --------------------------------------------------------------------- Intel Corporation SAS (French simplified joint stock company) Registered headquarters: "Les Montalets"- 2, rue de Paris, 92196 Meudon Cedex, France Registration Number: 302 456 199 R.C.S. NANTERRE Capital: 4,572,000 Euros This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#84213): https://edk2.groups.io/g/devel/message/84213 Mute This Topic: https://groups.io/mt/87429206/21656 Group Owner: [email protected] Unsubscribe: https://edk2.groups.io/g/devel/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
