- TF-A - lists.trustedfirmware.org

Questions about memory encryption in FVP & TF-A

by Chenxu Wang

Hi all, I find that the latest Arm A-profile manual (DDI0487_J_a) mention several registers/instructions related to memory encryption (e.g., MECID-related registers). So can I ask two questions about it? 1. Is the FVP (I use the Base RevC AEM) support Memory Encryption Context (MEC) and Memory Protection Engine (MPE)? They are critical to memory encryption. If no, do we have some solutions to simulate them and verify memory encryption? 2. Does current TF-A support managing MPE, or other hardware related to memory encryption? Besides that, one problem for curiosity (only related to FVP). 3. I find some PCI-E device can use hardware encryption (example, NVIDIA H100 GPU). Can we attach this device to FVP's PCI-E port? Assume it has already connected to my Host PC via PCI-E. Sincerely, WANG Chenxu

1 year, 9 months

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New Defects reported by Coverity Scan for ARM-software/arm-trusted-firmware

by scan-admin＠coverity.com

Hi, Please find the latest report on new defect(s) introduced to ARM-software/arm-trusted-firmware found with Coverity Scan. 3 new defect(s) introduced to ARM-software/arm-trusted-firmware found with Coverity Scan. New defect(s) Reported-by: Coverity Scan Showing 3 of 3 defect(s) ** CID 400208: Performance inefficiencies (PASS_BY_VALUE) /include/services/el3_spmd_logical_sp.h: 108 in ffa_partition_info_regs_get_last_idx() ________________________________________________________________________________________________________ *** CID 400208: Performance inefficiencies (PASS_BY_VALUE) /include/services/el3_spmd_logical_sp.h: 108 in ffa_partition_info_regs_get_last_idx() 102 { 103 return (retval->func == FFA_MSG_SEND_DIRECT_RESP_SMC32) || 104 (retval->func == FFA_MSG_SEND_DIRECT_RESP_SMC64); 105 } 106 107 static inline uint16_t ffa_partition_info_regs_get_last_idx( >>> CID 400208: Performance inefficiencies (PASS_BY_VALUE) >>> Passing parameter args of type "struct ffa_value" (size 144 bytes) by value, which exceeds the low threshold of 128 bytes. 108 struct ffa_value args) 109 { 110 return (uint16_t)(args.arg2 & 0xFFFFU); 111 } 112 113 static inline uint16_t ffa_partition_info_regs_get_curr_idx( ** CID 400207: Performance inefficiencies (PASS_BY_VALUE) /services/std_svc/spmd/spmd_logical_sp.c: 359 in ffa_partition_info_regs_get_part_info() ________________________________________________________________________________________________________ *** CID 400207: Performance inefficiencies (PASS_BY_VALUE) /services/std_svc/spmd/spmd_logical_sp.c: 359 in ffa_partition_info_regs_get_part_info() 353 * This function takes an ffa_value structure populated with partition 354 * information from an FFA_PARTITION_INFO_GET_REGS ABI call, extracts 355 * the values and writes it into a ffa_partition_info_v1_1 structure for 356 * other code to consume. 357 */ 358 bool ffa_partition_info_regs_get_part_info( >>> CID 400207: Performance inefficiencies (PASS_BY_VALUE) >>> Passing parameter args of type "struct ffa_value" (size 144 bytes) by value, which exceeds the low threshold of 128 bytes. 359 struct ffa_value args, uint8_t idx, 360 struct ffa_partition_info_v1_1 *partition_info) 361 { 362 uint64_t *arg_ptrs; 363 uint64_t info, uuid_lo, uuid_high; 364 ** CID 400206: Control flow issues (UNREACHABLE) /plat/xilinx/common/plat_fdt.c: 28 in prepare_dtb() ________________________________________________________________________________________________________ *** CID 400206: Control flow issues (UNREACHABLE) /plat/xilinx/common/plat_fdt.c: 28 in prepare_dtb() 22 dtb = (void *)XILINX_OF_BOARD_DTB_ADDR; 23 #endif 24 if (IS_TFA_IN_OCM(BL31_BASE)) 25 return; 26 27 /* Return if no device tree is detected */ >>> CID 400206: Control flow issues (UNREACHABLE) >>> This code cannot be reached: "if (fdt_check_header(dtb) !...". 28 if (fdt_check_header(dtb) != 0) { 29 NOTICE("Can't read DT at %p\n", dtb); 30 return; 31 } 32 33 ret = fdt_open_into(dtb, dtb, XILINX_OF_BOARD_DTB_MAX_SIZE); ________________________________________________________________________________________________________ To view the defects in Coverity Scan visit, https://u15810271.ct.sendgrid.net/ls/click?upn=HRESupC-2F2Czv4BOaCWWCy7my0P…

1 year, 9 months

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New TrustedFirmware Discord Server

by Don Harbin

Hi All, Note you may have received another instance of this note but when I attempted to send to all TF ML's simultaneously it seemed to fail, so sending to each one at a time. Sorry about that. :/ We've created a Discord Server for real time chats/sharing. This solution comes at no cost to the project, is set up with channels for each project, includes a #general channel, and supports direct 1-1 chats between members, all with the goal of improving collaboration between trustedfirmware.org developers. We encourage all to join! :) Instructions for joining can be found on the TF.org FAQ page <https://www.trustedfirmware.org/faq/>. See you all there and please don't hesitate to reach out if you have any questions! Don Harbin TrustedFirmware Community Manager don.harbin(a)linaro.org

1 year, 9 months

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New TrustedFirmware Discord Server

by don.harbin＠linaro.org

The content of this message was lost. It was probably cross-posted to multiple lists and previously handled on another list.

1 year, 9 months

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MISRA-C violation for unused functions in Trusted Firmware-A(TFA) code

by nithing1999＠gmail.com

It is observed that several unused functions are present in Trusted Firmware-A code, is it possible to mask those unused functions or leave them as it is to fix MISRA-C Violations? If these functions are not appearing in symbol table, then no need to take actions on violations reported in these functions? Please suggest.

1 year, 9 months

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Canceled event: TF-A Tech Forum @ Thu Sep 7, 2023 4pm - 5pm (BST) (tf-a@lists.trustedfirmware.org)

by joanna.farley＠arm.com

This event has been canceled. TF-A Tech Forum Thursday Sep 7, 2023 ⋅ 4pm – 5pm United Kingdom Time We run an open technical forum call for anyone to participate and it is not restricted to Trusted Firmware project members. It will operate under the guidance of the TF TSC. Feel free to forward this invite to colleagues. Invites are via the TF-A mailing list and also published on the Trusted Firmware website. Details are here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/Tr… Firmware is inviting you to a scheduled Zoom meeting.Join Zoom Meetinghttps://zoom.us/j/9159704974Meeting ID: 915 970 4974One tap mobile+16465588656,,9159704974# US (New York)+16699009128,,9159704974# US (San Jose)Dial by your location        +1 646 558 8656 US (New York)        +1 669 900 9128 US (San Jose)        877 853 5247 US Toll-free        888 788 0099 US Toll-freeMeeting ID: 915 970 4974Find your local number: https://zoom.us/u/ad27hc6t7h   Guests marek.bykowski(a)gmail.com okash.khawaja(a)gmail.com tf-a(a)lists.trustedfirmware.org ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. To stop receiving future updates for this event, decline this event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

1 year, 9 months

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Re: Invitation: TF-A Tech Forum @ Every 2 weeks from 16:00 to 17:00 on Thursday (BST) (tf-a@lists.trustedfirmware.org)

by Olivier Deprez

Hi, Please consider the TF-A Tech Forum cancelled for tomorrow Thu Sep, 7th as no topic was raised. Thanks. Regards, Olivier. ________________________________ From: Trusted Firmware Public Meetings Sent: 14 June 2020 19:21 To: Trusted Firmware Public Meetings <linaro.org_havjv2figrh5egaiurb229pd8c(a)group.calendar.google.com>; tf-a(a)lists.trustedfirmware.org <tf-a(a)lists.trustedfirmware.org> Subject: [TF-A] Invitation: TF-A Tech Forum @ Every 2 weeks from 16:00 to 17:00 on Thursday (BST) (tf-a(a)lists.trustedfirmware.org) When: 07 September 2023 17:00-18:00. Where: You have been invited to the following event. TF-A Tech Forum When Every 2 weeks from 16:00 to 17:00 on Thursday United Kingdom Time Calendar tf-a(a)lists.trustedfirmware.org Who • Bill Fletcher- creator • tf-a(a)lists.trustedfirmware.org more details »<https://www.google.com/calendar/event?action=VIEW&eid=NWlub3Ewdm1tMmk1cTJrM…> We run an open technical forum call for anyone to participate and it is not restricted to Trusted Firmware project members. It will operate under the guidance of the TF TSC. Feel free to forward this invite to colleagues. Invites are via the TF-A mailing list and also published on the Trusted Firmware website. Details are here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/<https://www.google.com/url?q=https%3A%2F%2Fwww.trustedfirmware.org%2Fmeetin…> Trusted Firmware is inviting you to a scheduled Zoom meeting. Join Zoom Meeting https://zoom.us/j/9159704974<https://www.google.com/url?q=https%3A%2F%2Fzoom.us%2Fj%2F9159704974&sa=D&us…> Meeting ID: 915 970 4974 One tap mobile +16465588656,,9159704974# US (New York) +16699009128,,9159704974# US (San Jose) Dial by your location +1 646 558 8656 US (New York) +1 669 900 9128 US (San Jose) 877 853 5247 US Toll-free 888 788 0099 US Toll-free Meeting ID: 915 970 4974 Find your local number: https://zoom.us/u/ad27hc6t7h<https://www.google.com/url?q=https%3A%2F%2Fzoom.us%2Fu%2Fad27hc6t7h&sa=D&us…> Going (tf-a(a)lists.trustedfirmware.org)? All events in this series: Yes<https://www.google.com/calendar/event?action=RESPOND&eid=NWlub3Ewdm1tMmk1cT…> - Maybe<https://www.google.com/calendar/event?action=RESPOND&eid=NWlub3Ewdm1tMmk1cT…> - No<https://www.google.com/calendar/event?action=RESPOND&eid=NWlub3Ewdm1tMmk1cT…> more options »<https://www.google.com/calendar/event?action=VIEW&eid=NWlub3Ewdm1tMmk1cTJrM…> Invitation from Google Calendar<https://www.google.com/calendar/> You are receiving this courtesy email at the account tf-a(a)lists.trustedfirmware.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively, you can sign up for a Google Account at https://www.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organiser and be added to the guest list, invite others regardless of their own invitation status or to modify your RSVP. Learn more<https://support.google.com/calendar/answer/37135#forwarding>.

1 year, 9 months

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External Abort and SError Handling with RAS enabled

by Bharat Bhushan

Hi All, SCR_EL3.EA define whether to route External Abort and SError Interrupt to EL3 or EL2/1. ATF have a compile time flag to HANDLE_EA_EL3_FIRST_NS to program SCR_EL3.EA. Below text from ATF documentation. - ``HANDLE_EA_EL3_FIRST_NS``: When set to ``1``, External Aborts and SError Interrupts, resulting from errors in NS world, will be always trapped in EL3 i.e. in BL31 at runtime. When set to ``0`` (default), these exceptions will be trapped in the current exception level (or in EL1 if the current exception level is EL0). Have question related to forwarding of these errors when External Abort and SError Interrupt are routed to EL3. In this case will ATF forward Asynchronous SError Interrupt to Linux via RAS? Thanks -Bharat

1 year, 10 months

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MISRA-C Violations for function like macros in Trusted Firmware-A(TFA) code

by nithing1999＠gmail.com

It is observed that functions like macros like NOTICE, WARN and assert are present in the Trusted Firmware-A code. MISRA-C standard treats these as violations. shall we take these as deviation? please suggest. TFA Guidelines recommends using logging macros. So can we make deviations or need to change the MACRO into function.

1 year, 10 months

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MISRA-C violation for Device Tree (FDT) in Trusted Firmware-A (TFA) code.

by Nithin G

Hello, It is observed that device tree functions are present under lib/libfdt/... in Trusted Firmware-A code, but this device tree are not present in symbol table and also if we remove this device tree functions in code, board was successfully booting. However, while doing Coverity build to fix MISRA-C violations getting violations from this device tree code. So, is it possible to leave those violations please suggest? And when it will be enabled, please suggest. Thanks & Regards Nithin G

1 year, 10 months

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