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Agilex5 HPS running bare-metal code does not access FPGA fabric
I started with the following "Hello World" HPS OCRAM example: https://altera-fpga.github.io/rel-25.1/baremetal-embedded/agilex-5/e-series/premium/ug-baremetal-agx5e-premium/ I built the GHRD image with FPGA boot load set to "fabric first" and compiled the C code. With these changes, I am able to run the code and I can see the heartbeat LED toggle on the A5E premium development kit board. I am also able transmit data by writing the UART transmit register with my REG32 macro. However, I cannot access either H2F or LWH2F interfaces. I put Signal Tap on all arvalid/awvalid signals I and I do not see them toggle (I sanity checked the setup using the heartbeat counter). After looking at the documentation and the provided bare-metal drivers code, I cobbled together the following code to attempt to enable the HPS2 FPGA bridges: #define REG32(address) (*(volatile uint32_t*)address) #define REG64(address) (*(volatile uint64_t*)address) // Read the Reset manager registers uint32_t value32; value32 = REG32(0x10D1102C); printf("Reset manager initial value = 0x%08x \n", value32); // Drop the reset for SOC2FPGA bridges REG32(0x10D1102C) = 0; value32 = REG32(0x10D1102C); printf("Reset manager value after modification = 0x%08x \n", value32); printf("Enable FPGA bridges (NOTE: is this really an enable?)\n"); REG32(0x10D1205C) = 0x3; value32 = REG32(0x10D1205C); printf("Bridge enable register value after modification = 0x%08x \n", value32); Running this code I see: Reset manager initial value = 0x0000004f Reset manager value after modification = 0x00000000 Enable FPGA bridges Bridge enable register value after modification = 0x00000003 However, this loop does not show AWVALID come up on either AXI interface (I tried two different write macros to see if there is a difference): while (1) { printf("H2F: FPGA OCRAM write\n"); REG64(0x40000000) = 0x11223344; printf("H2LWF: LED controller write\n"); mem_quick_write_32(0x20010080, 0); } I feel like I am missing something obvious (like another enable) but I keep going over the code examples and the documentation and I can't find anything that could help. Any help is greatly appreciated.29Views0likes3CommentsAgilex 7 I-Series "aocl diagnose acl0" error following OFS
Hello, I've been working through the Open FPGA Stack (OFS) guides to set up my Agilex 7 I-Series development kit for use with oneAPI. I've worked through prior SystemVerilog issues encountered by switching the generated FPGA Interface Manager (FIM) from a 1x16 PCIe configuration to a 2x8 configuration (although 1x16 would be more preferred). I am now on the final step of wrapping the FIM into a BSP and validating it for use with oneAPI by running the "aocl diagnose acl0" command. I should note that performing just "aocl diagnose" works fine. When I add "acl0" and execute, however, I find that all attempts to communicate between the host and FPGA via DMA fail (although we do see a single VTP L2 4KB hit). The exact output from the diagnose command is in the text file attached. I have tried using both a minimal FIM generated via command provided in the OFS guides, as well as pre-builts from the Github page. Why might this error be occurring, and how can I fix it? Any help is greatly appreciated, thank you! James617Views1like36CommentsRegarding MIPI CSI 2 TX
Hi, In my Project, I have to generate test pattern data and send it to MIPI CSI 2 via AXI stream, and MIPI CSI 2 will send the pixel data to link_0 of MIPI DPHY IP , but when i try to simulate the design(includes MIPI CSI 2 and MIPI DHPY IP interconnected), mipi_dphy_0/LINK0_CK_Stopstate is constantly high, I guess this signal is supposed to go low after T INT time, and also ready Singal from axi_stream is asserted low after being high for three clock cycles, i didn't understand why. Any help is appreciated.127Views0likes11CommentsCyclone 10GX PCIe / Raspberry Pi
Hi, We have a PCIe controller using the Cyclone 10Gx with the PCIe hard IP. It works when connected to a Windows system but it isn't getting detected when connected on a Raspberry Pi 5 or CM5 system. On the Pi, i see that the LTSSM transitions from Detect.Active to Polling.Active to Polling.Compliance to link down. I think this suggests that the Pi isn't detecting any device on the other end. I tried isolating the power on sequencing by hooking up an external power supply to the PCIe card, but it didn't help. Any guidance would be much appreciated. Thanks!59Views0likes8CommentsConstraints not being picked for DCFIFO
Hi, I am having various DCFIFOs in my design. I have applied constraints according to the ug_fifo. Attaching link for the reference https://faculty-web.msoe.edu/johnsontimoj/EE3921/files3921/ug_fifo.pdf In the DRC report, I am getting a violation of CDC-50007 which shows CDC bus with insufficient constraints and it is showing set_max_skew and set_data_delay are violated. This issue is not coming up for all the DCFIFOs in the design. The violations are there in the path of the delayed_wrptr_g[*] to rs_dgwp|dffpipe*|dffe and rdptr[*] to ws_dgrp[*] |dffpipe*|dffe. In the same DCFIFO, violation is coming only on either wr_ptr or rd_ptr. Could you suggest why this constraint is not being picked in some selected FIFOs and only in either wr / rd paths? set_data_delay is not prescribed as per the ug_fifo.1View0likes0CommentsTrouble Getting started with Stratix 10 SOC
I've recently purchased a Stratix 10 SOC board for experimentation. Although I've got the out of the box GHRD loaded and working, I've been struggling to get ANY changes I've made properly loaded into it. For example just changing the sysid in qsys and recompiling, generating the .sof and then converting it to an .rbf and loading it in uboot causes an error: command 'load' failed: Error -110 I understand that the Stratix 10 has a lot of security to ensure the bitstreams are validated and consistent, etc, and I'm sure this is useful in some contexts. But is there a way to disable some of this security to help a beginner get to the point where they can quickly start seeing designs loaded and working? NOTE: I'm not a total beginner. I've been experimenting with the Cyclone family (DE10-Nano, etc) for a few years now. But the Stratix is obviously a whole other level. Thanks,4Views0likes0CommentsTiming Behavior of Remote Update IP After Reset on Cyclone 10 GX (10CX150YF672E5G)
I am using the Remote Update IP with the Cyclone 10 GX FPGA, part number 10CX150YF672E5G. I observed that the Remote Update IP does not respond properly after reset until approximately 300 µs. I experimented with delays of 1 µs and 2 µs after reset, but did not observe the expected behavior. However, after waiting for 300 µs, the IP responded as expected. Previously, I used the same Remote Update IP with a different part number, 10CX150YF672I5G, and in that case, it worked as expected with just a 10 clock cycle delay after reset. Could you please confirm if there is a specific timing requirement after reset for initializing the Remote Update IP with the 10CX150YF672E5G device? I am using Quartus Prime Pro 24.2 tool for Both version of Cyclone 10GX FPGA(10CX150YF672E5G & 10CX105YF672I5G) Thank you.281Views0likes28CommentsAgilex 7 F Series Transceiver Pins Allowed Voltages During Powerup/When Unpowered
Hello, I would like to confirm the voltages allowed on the Agilex 7 F series Transceiver I/O (the Transceiver Data lanes and the REF_CLK inputs) during power-up or when the Agilex and its transceivers tiles are not powered. For example, I'd like to know if a scenario where Agilex interfaces to an external PCIe host that may drive PCIe clock to the Agilex Transceiver REF_CLK input before it's powered/while it's powering up is acceptable. The requirements for the Agilex GPIO, HPS_IO, and SDM_IO during powerup/when unpowered are clear to me from below documents but not the Transceiver I/O. I don't see any constraints specified for the Transceiver I/O during powerup unless I'm missing it. Can you please confirm this for me, or point me to where this is documented? If it matters, I am interested specifically in F-tile. The A692 Power Sequencing Considerations app note states the below: So it's clear for Cyclone GX, Arria 10, and Stratix 10 L/H tiles that no activity is allowed (with exception of 1.0 Vp-p on Stratix 10) on transceiver I/O during power-up but Agilex is not mentioned in this section. The Agilex 7 General-Purpose I/O User Guide states the following: Table 3: GPIO pin voltage must not exceed VCCIO_PIO or 1.2V, whichever is lower Table 22: HPS I/O pin voltage must not exceed VCCIO_HPS. Table 29: SDM I/O pin voltage must not exceed VCCIO_SDM. I don't see any mention of similar constraint for Transceiver I/O. The Agilex 7 Power Management User Guide states the following: Again, I see all I/O other than Transceiver I/O mentioned. Thanks!29Views0likes6CommentsLicense Server new License File
Hallo, I have to set up a new license server on a new machine. I am capable of doing this; my problem is the license itself. I only have the old license.lic from the old machine — but due to the corporate change from Intel to Silver Lake I can't reach any of the former Intel contacts anymore. I am also unsure if the "Intel® FPGA Licensing Support Center" is still responsible. Any insights on what the procedure is and who to contact? Viele Grüße Oliver Schumann Siemens AG, Nürnberg6Views0likes0CommentsDoes the 1SG280LU2F50E2VG support bitfile encryption
I am attempting to encrypt and load an image to the 1SG280LU2F50E2VG on our Stratix 10 GX development kit following the instructions in AN 970: Intel® Stratix® 10 Security Tutorial. When I attempt to download the "root.qky" to the FPGA I see: Info(209060): Started Programmer operation at Thu Feb 12 18:01:59 2026 Info(18942): Configuring device index 1 Info(18943): Configuration succeeded at device index 1 Info(20091): Programming public key on device 1 Error(209012): Operation failed Info(209061): Ended Programmer operation at Thu Feb 12 18:02:02 2026 Is the FPGA on the development kit compatible with encryption?7Views0likes1Comment
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Recent Blogs
As the industry accelerates its transition from DDR4 to DDR5 and LPDDR5, memory choices are becoming a defining factor in system longevity, performance, and supply continuity. Altera is uniquely positioned to help customers navigate this shift with production-ready DDR5 and LPDDR5 solutions available today across a broad FPGA portfolio. DDR5 Is the New Standard Major memory vendors have announced plans for DDR4 end-of-life plans or significant production reductions, with full transitions to DDR5, LPDDR5, and next-generation memory already underway. While DDR4 will remain available for long lifecycle segments through multiple suppliers, new design starts today are increasingly looking to DDR5 and LPDDR5. Altera’s Head Start in DDR5 and LPDDR5 While DDR5 and LPDDR5 support is emerging across the industry, Altera stands apart with the broadest set of production devices supporting these standards across high-performance, mid-range, and power-optimized platforms: Agilex™ 7 M-Series and Agilex™ 5 devices support DDR5 and LPDDR5 for high-performance and embedded applications Altera is also planning to add LPDDR5 support within Agilex™ 3 devices, reinforcing its long-term design scalability. Competitive Advantage Across Every Market Tier Altera’s memory leadership spans across a range of design requirements: - High-Performance designs: Agilex™ 7 AGM032 and AGM039 support: DDR5 up to 5,600 MT/s LPDDR5 up to 5,500 MT/s - Mid-Range designs: Agilex™ 5 D-Series support: DDR5 up to 5,600 MT/s LPDDR5 up to 5,500 MT/s - Power/Cost-optimized designs: Agilex™ 3 support: LPDDR5 up to 2133 MT/s Unlike FPGA-only devices, Agilex integrates an optional HPS that allows DDR5 and LPDDR5 to function as a shared memory resource for both processing and acceleration, delivering higher effective bandwidth and system efficiency. Key Takeaway With DDR5 and LPDDR5 moving from ‘next-generation’ to ‘now,’ Altera offers customers a clear advantage: production-ready memory leadership, a broad and scalable FPGA portfolio, and a smooth transition path from DDR4 to DDR5—without waiting for future silicon.
5 days ago0likes
Using FPGAs and MCUs Collaboratively FPGAs and microcontrollers can be used alternatively in some applications, but they can also be used cooperatively. FPGAs provide ultimate flexibility, but microcontrollers often include peripherals like USB or wireless interfaces that may be more convenient for communications and updates. Both devices require supporting circuitry such as power, reference clocks, and storage. Fortunately, these can often be shared when using FPGAs and microcontrollers together. This blog introduces an open-source tool that enables microcontrollers to load a programming file into a programmable device, and the practical application of this with the Raspberry Pi RP2350 MCU. An Open Standard for Loading Programmable Devices Loading programmable devices from embedded processors is a common task. The Jam Standard Test and Programming Language (STAPL) was originally developed by Altera engineers to address challenges in programming programmable logic devices (PLDs) in-system, such as proprietary file formats, vendor-specific algorithms, large file sizes, and long programming times. It provides a software-level standard for in-system programming (ISP), enabling flexibility and platform independence. Figure 1. In-system programming using the Jam File & Jam Player via an embedded processor. In August 1999, JAM/STAPL was adopted as JEDEC standard JESD-71, making it an industry-recognized solution for JTAG-based programming. The language introduced features like compact file formats, branching, and looping, which reduced programming time and file size—ideal for embedded systems. JAM/STAPL consists of two main components: Jam Composer: Generates Jam Files (.jam) containing programming algorithms and user data. Jam Player: Interprets these files and applies JTAG vectors for programming and testing devices. Over time, JAM/STAPL gained widespread support from PLD vendors, programming equipment makers, and test equipment manufacturers, becoming a cornerstone for in-field upgrades, prototyping, and production programming. Its evolution also included a byte-code format (.jbc) for even smaller files, making it suitable for resource-constrained embedded processors. Recently, Altera updated the license terms of the JAM and JBC players source code to MIT-0, to better clarify the usage rights. A Practical Example The CycloMod board is an example of an FPGA and microcontroller working cooperatively. The board combines a Raspberry Pi RP2350 MCU with a Cyclone® 10 LP FPGA in the SparkFun MicroMod form factor. In this board, the FPGA is connected to some of the edge connector I/O, while the RP2350 is used to provide a flexible USB interface. The boot ROM in the RP2350 is leveraged extensively for firmware and FPGA image updates. Figure 2. CycloMod Board At 22mm x 22mm (including the card-edge connector), the MicroMod form factor is quite compact. This necessitates sharing resources, as there is not much room for multiple oscillators or flash devices. The 12 MHz crystal oscillator in the RP2350 is easily shared by routing it to one of the GPIO clock outputs. Both the Cyclone 10 LP device and RP2350 rely on external storage, but this can also be shared. On this board, the flash is connected to the RP2350 to take advantage of the UF2 loading provided in the boot ROM, and the RP2350 loads the Cyclone FPGA. The Cyclone 10 LP device supports active configuration with an external SPI flash device, but it can also be configured/programmed passively through JTAG. Figure 3. CycloMod Block Diagram The STAPL byte code format (sometimes referred to as JBC) is compact enough to be used with microcontrollers like the RP2350. Altera provides source code for implementing the “players” to process these files in embedded systems. They offer players for the ASCII (JAM) and bytecode (JBC) versions of the files. Altera’s Quartus® software provides the option to generate JAM and JBC files. Since STAPL is a JEDEC standard, other FPGA vendors also support generating these files. Using the open-source code provided by Altera, the RP2350 is able to read a JBC file from flash and load the Cyclone 10 LP FPGA through the JTAG interface. A Python script is provided to convert the JBC files to the UF2 format, which the RP2350 uses for drag-n-drop programming. The script also adds a header with the file length and other details. Thanks to the ingenuity of the UF2 format created by Microsoft, this enables cross platform field updates with zero software to install. Results and Link to Source Porting Altera’s JBC player to the RP2350 eliminated the need for a second flash device and enabled user-friendly drag-n-drop FPGA updates. The port is available on GitHub if you want to use this in your system. https://github.com/steieio/pico-jbc
1 month ago0likes
The expanded Agilex™ 5 D-Series FPGA and SoC family delivers a big leap in capabilities for mid-range FPGA applications, offering up to 2.5× more logic, memory, DSP/AI compute, and up to 2× external memory bandwidth. These enhancements make it ideal for designs that demand high compute performance in power and space-constrained environments.
1 month ago1like
We’re gearing up for AOC 2025! From December 9–11, we’ll be at the Gaylord National Resort & Convention Center in National Harbor, Maryland for AOC2025—one of North America’s premier events dedicated to electronic warfare and radar. Visit us at booth #505 to discover the latest innovations in our Agilex™ 9 Direct RF and Agilex™ 5 product families. What to Expect at Altera’s Booth #505: 1. Wideband and Agility Demo using Agilex 9: Overview: Discover the power of frequency hopping with Altera’s Direct RF FPGA, enhancing system resilience and adaptability. Key Features: Demonstrates swift frequency changes and wideband monitoring. 2. Wideband Channelizer Demo using Agilex 9: Overview: Wideband Channelizer features polyphase filter and 65 phases FFT blocks with variable channel support. Key Features: Demonstrates sampling rate that supports 64 GSPS with 32GHz instantaneous bandwidth. 3. Direction of Arrival Demo using Agilex 5: Overview: Explore Direction of Arriaval estimation and signal detection using AI-based approach with deployment of neural networks. Key Features: Demonstrates neural networks implementation using DSP Builder Advanced Blockset (DSPBA), showcasing end-to-end operation running real time inference. 4. Altera COTS Partner Showcase: Come see our Agilex based COTS boards from partners including Annapolis Microsystems, CAES, Hitek, iWave Global, Mercury Systems, & Spectrum Controls. We are hosting customer meetings at the event, contact your local Altera salesperson to schedule a slot.
2 months ago0likes
5 MIN READ
The computing world is hitting a wall. As AI models grow to trillions of parameters, as in-line databases scale to massive sizes, and as high-performance computing (HPC) workloads push bandwidth and memory to their limits, the need for more efficient data movement has never been greater. Traditional approaches to scaling bandwidth and capacity can’t keep pace without unsustainable cost expenditures on power usage and infrastructure build-out. Compression offers a practical and elegant solution to this challenge. By reducing the size of data that moves across interconnects, we can stretch bandwidth, improve memory efficiency, and lower system power—all without requiring a fundamental re-architecture. The Open Compute Project (OCP) has recently recognized this reality, highlighting compression as a key enabler for modern workloads. The combination of ZeroPoint Technologies (an Altera Partner), advanced compression IP, and Altera’s CXL Type 3 IP and FPGAs results in a 2–3x increase in bandwidth, giving the industry a proven path to meet the growing demand head-on. The Problem: Data Bottlenecks in Today’s Workloads AI and LLMs Large language models are exploding in size—parameters have grown from millions to billions, and now to trillions, in just a few short years. Training and inference of these models are fundamentally constrained by memory bandwidth and capacity. Without compression, these models would require even larger amounts of data movement, which increases latency, power consumption, and cost. In-line Databases Databases are increasingly run in-line with applications, from analytics pipelines to transaction processing. These in-line databases demand high throughput and low-latency access to massive datasets. Without compression, systems are forced to overprovision bandwidth and memory resources, dramatically increasing the total cost of ownership (TCO). High-Performance Computing (HPC) From climate modeling to genomics, HPC workloads require immense amounts of parallel data movement. Without compression, HPC centers must continue scaling raw interconnect bandwidth, which is unsustainable in terms of energy and cost at exascale levels. CXL Expansion (CXL Device Type 3) CXL (Compute Express Link) has emerged as the industry-standard protocol for memory pooling and expansion. Yet, as more systems adopt CXL for disaggregated memory, the sheer volume of data moving across CXL links risks overwhelming interconnect bandwidth. Without compression, the benefits of CXL expansion hit a hard ceiling. Demo Video: ZeroPoint demonstrates 2–3x increased bandwidth using its CXL compressed memory tier solution at the Future of Memory and Storage (FMS) 2025 CXL Acceleration (CXL Device Type 2) Beyond memory expansion, CXL enables accelerators to share memory seamlessly with CPUs. But in accelerator-heavy environments, data transfer volumes explode. Lack of compression makes accelerator scaling inefficient, power-hungry, and cost-prohibitive. Contact Altera to see the demo video: 2x–6x higher QPS running a VectorDB workload using a CXL 2.0 interface. Without compression, every one of these workloads faces a bottleneck that would be extremely difficult to solve with hardware scaling alone. OCP Introduces Compression into its Specification The Open Compute Project (OCP) organization recently underscored the importance of compression by including it in its specifications. This is a landmark shift: compression is no longer viewed as optional but included as a supported feature for next-generation compute infrastructure. James Kelly, VP Market Intelligence and Innovation at the OCP Foundation, said: “Within the OCP Community, our Composable Memory Systems Project, leveraging CXL and compression technologies, is driving the development of interoperable, scalable memory architectures that empower AI workloads with unprecedented efficiency and flexibility. By enabling disaggregated memory resources to be pooled and allocated across heterogeneous systems, we’re directly supporting OCP’s Open System for AI strategic initiative, fostering open specifications and standards that accelerate innovation and accessibility in AI infrastructure.” Klas Moreau, CEO of ZeroPoint Technologies, added: “What excites us about working with Altera’s CXL Type 3 IP is not just its performance, but its flexibility. Unlike other FPGA providers, Altera’s CXL solution gives us the low-latency, high-bandwidth fabric we need to showcase the full potential of our compression IP. Together, we’re able to deliver measurable gains—up to a 2–3x effective bandwidth increase—without changing the underlying hardware footprint. That’s a game-changer for customers scaling AI, HPC, and database workloads.” The Solution: ZeroPoint Compression IP + Altera CXL Type 3 IP and FPGA-based Boards ZeroPoint Compression Technology ZeroPoint brings a powerful, low-latency, hardware-efficient compression engine designed specifically for memory and interconnect applications. Unlike general-purpose compression algorithms, ZeroPoint’s IP is optimized for inline operation at wire speed, ensuring data is compressed and decompressed seamlessly without introducing overhead. Key benefits include: High compression ratios across AI, HPC, and database workloads Ultra-low latency to avoid bottlenecks on memory paths Energy savings by reducing data movement requirements Proven scalability across CXL and memory expansion use cases Altera CXL Type 3 IP Altera’s CXL Type 3 IP provides the foundation for memory expansion and pooling. It enables compute nodes to access disaggregated memory resources efficiently and securely. By integrating ZeroPoint’s compression IP, Altera’s solution extends even further—allowing CXL links to move more effective bandwidth, reduce congestion, and scale system capacity without increasing physical resources. There is a wide variety of CXL-capable FPGA-based boards available from Altera or partners. Together: Meeting the Market Need When combined, ZeroPoint’s compression IP and Altera’s CXL Type 3 IP address the OCP-driven specification requirements and solve the core problem facing data-intensive applications, ranging from AI to databases: moving massive amounts of data efficiently. Benefits to customers include: More bandwidth without more lanes: Compression effectively multiplies CXL throughput. Boost performance, cut costs: Unleash untapped performance in your current infrastructure with minimal new investment. Future-proof compliance: Alignment with OCP specifications ensures long-term viability. This combination delivers not just a technology improvement, but a market-ready solution that meets both current and emerging requirements. Conclusion The computing industry is shifting to adjust to new demands. AI, HPC, databases, and disaggregated systems are demanding exponential growth in bandwidth and memory efficiency—growth that hardware scaling alone cannot deliver. One answer is compression. OCP’s inclusion of compression in its specifications validates this direction and creates a mandate for solutions that integrate compression seamlessly with interconnect technologies like CXL. Through the combination of ZeroPoint’s cutting-edge compression IP and Altera’s CXL Type 3 IP, customers can now confidently deploy systems that are not only faster and more efficient but also aligned with the industry’s forward-looking standards. The future of computing depends on smarter ways to move and manage data. Compression + CXL is that smarter way—and with ZeroPoint and Altera, the future is already here. Learn More Presentations or videos are available for on-demand viewing or download: FMS 2025 session (video | slides) OCP 2025 session (video | slides) Next Steps Learn more about Altera’s CXL IP core. For technical details, partnership discussions, or general inquiries, please contact: nilesh.shah@zptcorp.com — CXL compression solutions phillip.swart@altera.com — FPGA-based CXL IP and boards
3 months ago0likes