<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""> <div class=""> <blockquote type="cite" class=""><div class="">On Jul 30, 2021, at 12:34 PM, Bret Barkelew via <a href="http://groups.io/" class="">groups.io</a> <<a href="mailto:bret.barkelew=microsoft.com@groups.io" class="">bret.barkelew=microsoft.com@groups.io</a>> wrote:</div> <div class=""><meta charset="UTF-8" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I don’t think this is a good dependency. StandaloneMmCore shouldn’t require anything from EmbeddedPkg, and if it does there’s probably some more generalization necessary.</div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Further, we can’t require the MmCore (which should be considered generic at the level of PEI Core or DXE Core) include some external library like Libfdt without significant justification.</div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div></div></blockquote><div class=""> </div><div class="">I think we should understand if this is being driven by some kind of standard? Maybe the Flat Device Tree lib should be part of the MdePkg? Or maybe MdeModulePkg?</div><div class=""> </div><div class="">Thanks,</div><div class=""> </div><div class="">Andrew Fish</div> <blockquote type="cite" class=""><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">- Bret <o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; border: none; padding: 0in;" class="">From: <a href="mailto:sayanta.pattanayak=arm.com@groups.io" style="color: blue; text-decoration: underline;" class="">Sayanta Pattanayak via groups.io</a> Sent: Friday, July 30, 2021 10:36 AM To: <a href="mailto:devel@edk2.groups.io" style="color: blue; text-decoration: underline;" class="">devel@edk2.groups.io</a> Cc: <a href="mailto:ardb+tianocore@kernel.org" style="color: blue; text-decoration: underline;" class="">Ard Biesheuvel</a>; <a href="mailto:sami.mujawar@arm.com" style="color: blue; text-decoration: underline;" class="">Sami Mujawar</a>; <a href="mailto:achin.gupta@arm.comw" style="color: blue; text-decoration: underline;" class="">Achin Gupta</a> Subject: [EXTERNAL] [edk2-devel] [edk2][PATCH v1 1/1] StandaloneMmPkg: add support to populate StMM boot data from device tree</div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>Introduce support to populate StMM boot data via DTS parsing. The DTB is passed as a boot argument by a binary of higer exception level. Previously it was achieved by placing the boot data structure in a shared buffer and the address of this shared buffer was passed by the binary of higher exception level. Now either of the option can be used for populating StMM boot info. StMM boot information structure binding in device tree can be of following prototype. Property values are not mentioned here. bootarg { compatible = "bootargs"; h_type = <..>; h_version = <..>; h_size = <..>; h_attr = <..>; sp_mem_base = <..>; sp_mem_limit = <..>; sp_image_base = <..>; sp_stack_base = <..>; sp_heap_base = <..>; sp_ns_comm_buf_base = <..>;fc sp_shared_buf_base = <..>; sp_image_size = <..>; sp_pcpu_stack_size = <..>; sp_heap_size = <..>; sp_ns_comm_buf_size = <..>; sp_shared_buf_size = <..>; num_sp_mem_regions = <..>; num_cpus = <..>; }; Addition of DTS supoort involves a dependency on FdtLib from EmbeddedPkg. Signed-off-by: Sayanta Pattanayak <<a href="mailto:sayanta.pattanayak@arm.com" style="color: blue; text-decoration: underline;" class="">sayanta.pattanayak@arm.com</a>> --- Link to github branch with this patch - <a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FSayantaP-arm%2Fedk2%2Ftree%2Fstmm-dts&data=04%7C01%7Cbret.barkelew%40microsoft.com%7Cb365266c83cb433d1e0108d953806c83%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637632633786132182%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=gJw%2BH8Dj9lih1DNrIzbNPToJn9nH%2BHqpvpSr2JJrS4I%3D&reserved=0" style="color: blue; text-decoration: underline;" class="">https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FSayantaP-arm%2Fedk2%2Ftree%2Fstmm-dts&data=04%7C01%7Cbret.barkelew%40microsoft.com%7Cb365266c83cb433d1e0108d953806c83%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637632633786132182%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=gJw%2BH8Dj9lih1DNrIzbNPToJn9nH%2BHqpvpSr2JJrS4I%3D&reserved=0</a> StandaloneMmPkg/StandaloneMmPkg.dsc | 1 + StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf | 3 + StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/AArch64/StandaloneMmCoreEntryPoint.c | 153 ++++++++++++++++++-- 3 files changed, 143 insertions(+), 14 deletions(-) diff --git a/StandaloneMmPkg/StandaloneMmPkg.dsc b/StandaloneMmPkg/StandaloneMmPkg.dsc index 0c45df95e2dd..e3a3a6ee3ba1 100644 --- a/StandaloneMmPkg/StandaloneMmPkg.dsc +++ b/StandaloneMmPkg/StandaloneMmPkg.dsc @@ -49,6 +49,7 @@ HobLib|StandaloneMmPkg/Library/StandaloneMmHobLib/StandaloneMmHobLib.inf IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf MemLib|StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf + FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf MemoryAllocationLib|StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/StandaloneMmCoreMemoryAllocationLib.inf MmServicesTableLib|MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf diff --git a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf index 4fa426f58ef4..0a2e519dd664 100644 --- a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf +++ b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf @@ -30,6 +30,7 @@ X64/StandaloneMmCoreEntryPoint.c [Packages] + EmbeddedPkg/EmbeddedPkg.dec MdePkg/MdePkg.dec MdeModulePkg/MdeModulePkg.dec StandaloneMmPkg/StandaloneMmPkg.dec @@ -40,10 +41,12 @@ [LibraryClasses] BaseLib DebugLib + FdtLib [LibraryClasses.AARCH64] StandaloneMmMmuLib ArmSvcLib + FdtLib [Guids] gMpInformationHobGuid diff --git a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/AArch64/StandaloneMmCoreEntryPoint.c b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/AArch64/StandaloneMmCoreEntryPoint.c index 6c50f470aa35..cc09d75dac36 100644 --- a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/AArch64/StandaloneMmCoreEntryPoint.c +++ b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/AArch64/StandaloneMmCoreEntryPoint.c @@ -16,6 +16,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Guid/MmramMemoryReserve.h> #include <Guid/MpInformation.h> +#include <libfdt.h> #include <Library/ArmMmuLib.h> #include <Library/ArmSvcLib.h> #include <Library/DebugLib.h> @@ -45,33 +46,31 @@ STATIC CONST UINT32 mSpmMinorVerFfa = SPM_MINOR_VERSION_FFA; PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT CpuDriverEntryPoint = NULL; /** - Retrieve a pointer to and print the boot information passed by privileged - secure firmware. + Prints boot information. - @param [in] SharedBufAddress The pointer memory shared with privileged - firmware. + This function prints the boot information, which is passed by privileged + secure firmware through shared buffer or other mechanism. + @param [in] PayloadBootInfo Pointer to StandaloneMM Boot Info structure. **/ -EFI_SECURE_PARTITION_BOOT_INFO * -GetAndPrintBootinformation ( - IN VOID *SharedBufAddress +VOID +PrintBootinformation ( + IN EFI_SECURE_PARTITION_BOOT_INFO *PayloadBootInfo ) { - EFI_SECURE_PARTITION_BOOT_INFO *PayloadBootInfo; EFI_SECURE_PARTITION_CPU_INFO *PayloadCpuInfo; UINTN Index; - PayloadBootInfo = (EFI_SECURE_PARTITION_BOOT_INFO *) SharedBufAddress; if (PayloadBootInfo == NULL) { DEBUG ((DEBUG_ERROR, "PayloadBootInfo NULL\n")); - return NULL; + return; } if (PayloadBootInfo->Header.Version != BOOT_PAYLOAD_VERSION) { DEBUG ((DEBUG_ERROR, "Boot Information Version Mismatch. Current=0x%x, Expected=0x%x.\n", PayloadBootInfo->Header.Version, BOOT_PAYLOAD_VERSION)); - return NULL; + return; } DEBUG ((DEBUG_INFO, "NumSpMemRegions - 0x%x\n", PayloadBootInfo->NumSpMemRegions)); @@ -96,7 +95,7 @@ GetAndPrintBootinformation ( if (PayloadCpuInfo == NULL) { DEBUG ((DEBUG_ERROR, "PayloadCpuInfo NULL\n")); - return NULL; + return; } for (Index = 0; Index < PayloadBootInfo->NumCpus; Index++) { @@ -105,7 +104,7 @@ GetAndPrintBootinformation ( DEBUG ((DEBUG_INFO, "Flags - 0x%x\n", PayloadCpuInfo[Index].Flags)); } - return PayloadBootInfo; + return; } /** @@ -194,6 +193,119 @@ DelegatedEventLoop ( } } +/** + Populates StandAloneMM boot information structure. + + This function receives dtb Address, where StMM Boot information specific + properties will be looked out to form the booting structure of type + EFI_SECURE_PARTITION_BOOT_INFO. At first, the properties for StandAloneMM + ConfigSize and Memory limit will be checked out. Boot information will + be stored at address (Memory Limit - ConfigSize). Thereafter all boot + information specific properties will be parsed and corresponding values + will be obtained. + + @param [out] BootInfo Pointer, where Boot Info structure will be populated. + @param [in] DtbAddress Address of the Device tree from where Boot + information will be fetched. +**/ +VOID +PopulateBootinformation ( + OUT EFI_SECURE_PARTITION_BOOT_INFO **BootInfo, + IN VOID *DtbAddress +) +{ + INT32 Offset; + CONST UINT32 *Property; + CONST UINT64 *Property64; + UINT32 ConfigSize; + UINT64 SpMemLimit; + EFI_SECURE_PARTITION_BOOT_INFO *PayloadBootInfo; + + Offset = fdt_node_offset_by_compatible (DtbAddress, -1, "config-size"); + if (Offset < 0) { + DEBUG ((DEBUG_WARN, "Total Config Size is not defined\n")); + } else { + Property = fdt_getprop (DtbAddress, Offset, "size", NULL); + if (Property) { + ConfigSize = fdt32_to_cpu (*Property); + DEBUG ((DEBUG_INFO, "stmm dtb config-size = 0x%x \n", ConfigSize)); + } + } + + Offset = fdt_node_offset_by_compatible (DtbAddress, -1, "bootargs"); + if (Offset >= 0) { + Property64 = fdt_getprop (DtbAddress, Offset, "sp_mem_limit", NULL); + SpMemLimit = fdt64_to_cpu (*Property64); + } + + if (SpMemLimit && ConfigSize) + PayloadBootInfo = + (EFI_SECURE_PARTITION_BOOT_INFO *)(SpMemLimit - ConfigSize); + + if (PayloadBootInfo) { + PayloadBootInfo->SpMemLimit = SpMemLimit; + + Property = fdt_getprop (DtbAddress, Offset, "h_type", NULL); + PayloadBootInfo->Header.Type = (UINT8) fdt32_to_cpu(*Property); + + Property = fdt_getprop (DtbAddress, Offset, "h_version", NULL); + PayloadBootInfo->Header.Version = (UINT8) fdt32_to_cpu(*Property); + + Property = fdt_getprop (DtbAddress, Offset, "h_size", NULL); + PayloadBootInfo->Header.Size = (UINT8) fdt32_to_cpu(*Property); + + Property = fdt_getprop (DtbAddress, Offset, "h_attr", NULL); + PayloadBootInfo->Header.Attr = fdt32_to_cpu(*Property); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_mem_base", NULL); + PayloadBootInfo->SpMemBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_image_base", NULL); + PayloadBootInfo->SpImageBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_stack_base", NULL); + PayloadBootInfo->SpStackBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_heap_base", NULL); + PayloadBootInfo->SpHeapBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_ns_comm_buf_base", NULL); + PayloadBootInfo->SpNsCommBufBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_shared_buf_base", NULL); + PayloadBootInfo->SpSharedBufBase = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_image_size", NULL); + PayloadBootInfo->SpImageSize = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_pcpu_stack_size", NULL); + PayloadBootInfo->SpPcpuStackSize = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_heap_size", NULL); + PayloadBootInfo->SpHeapSize = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_ns_comm_buf_size", NULL); + PayloadBootInfo->SpNsCommBufSize = fdt64_to_cpu(*Property64); + + Property64 = fdt_getprop (DtbAddress, Offset, "sp_shared_buf_size", NULL); + PayloadBootInfo->SpPcpuSharedBufSize = fdt64_to_cpu(*Property64); + + Property = fdt_getprop (DtbAddress, Offset, "num_sp_mem_regions", NULL); + PayloadBootInfo->NumSpMemRegions = fdt32_to_cpu(*Property); + + Property = fdt_getprop (DtbAddress, Offset, "num_cpus", NULL); + PayloadBootInfo->NumCpus = fdt32_to_cpu(*Property); + + PayloadBootInfo->CpuInfo = + (EFI_SECURE_PARTITION_CPU_INFO *)((UINT64)PayloadBootInfo + + sizeof(EFI_SECURE_PARTITION_BOOT_INFO)); + } + + *BootInfo = PayloadBootInfo; + + return; +} + /** Query the SPM version, check compatibility and return success if compatible. @@ -313,6 +425,7 @@ _ModuleEntryPoint ( VOID *TeData; UINTN TeDataSize; EFI_PHYSICAL_ADDRESS ImageBase; + VOID *DtbAddress; // Get Secure Partition Manager Version Information Status = GetSpmVersion (); @@ -320,12 +433,24 @@ _ModuleEntryPoint ( goto finish; } - PayloadBootInfo = GetAndPrintBootinformation (SharedBufAddress); + // In cookie1 the DTB address is passed. With reference to DTB, Boot + // info structure can be populated. + // If cookie1 doesn't have any value, then Boot info is copied from + // Sharedbuffer. + if (cookie1) { + DtbAddress = (void *)cookie1; + PopulateBootinformation (&PayloadBootInfo, DtbAddress); + } else { + PayloadBootInfo = (EFI_SECURE_PARTITION_BOOT_INFO *)SharedBufAddress; + } + if (PayloadBootInfo == NULL) { Status = EFI_UNSUPPORTED; goto finish; } + PrintBootinformation (PayloadBootInfo); + // Locate PE/COFF File information for the Standalone MM core module Status = LocateStandaloneMmCorePeCoffData ( (EFI_FIRMWARE_VOLUME_HEADER *) PayloadBootInfo->SpImageBase, -- 2.17.1 -=-=-=-=-=-= <a href="http://groups.io/" style="color: blue; text-decoration: underline;" class="">Groups.io</a> Links: You receive all messages sent to this group. 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