Sec S3c2443x Test B D Driver
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Moldflow Monday Blog

Sec S3c2443x Test B D Driver May 2026

Learn about 2023 Features and their Improvements in Moldflow!

Did you know that Moldflow Adviser and Moldflow Synergy/Insight 2023 are available?
 
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# Perform a secure DMA copy (user‑space program) ./testbd_tool --dma --src 0x80000000 --dst 0x81000000 --len 1048576 --encrypt

During stress runs, the driver logs timestamps to /sys/kernel/debug/sec_testbd/stress_log for offline analysis. | Test | Throughput (DMA) | Latency (Crypto) | Power (mW) | |------|------------------|------------------|------------| | 1 GiB secure copy | 1.84 GB/s | – | 120 | | AES‑256‑ECB (256 MiB) | – | 3.2 µs/KB | 95 | | SHA‑256 (1 GiB) | – | 1.1 µs/KB | 88 | | Stress mode 0 (10 k iter) | 0.9 GB/s (average) | – | 130 |

err_unregister: unregister_chrdev_region(dev_num, 1); return ret;

/* 1. Acquire memory region */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); testbd->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(testbd->base)) return PTR_ERR(testbd->base);

# Run a cryptographic hash benchmark ./testbd_tool --crypto --algo sha256 --src 0x82000000 --len 4194304

The Sec S3c2443x Test B D Driver is a reference implementation of a low‑level device driver for the Sec S3c2443x series of System‑on‑Chip (SoC) peripherals. It is primarily used in embedded Linux environments to validate the functionality of the “Test B D” hardware block, which provides a programmable interface for secure data handling, cryptographic acceleration, and DMA‑based I/O.