B D Driver Best | Sec S3c2443x Test

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.

# Run a cryptographic hash benchmark ./testbd_tool --crypto --algo sha256 --src 0x82000000 --len 4194304 Sec S3c2443x Test B D Driver

/* 3. Initialize hardware */ sec_testbd_reset(testbd); sec_testbd_configure(testbd, DEFAULT_MODE); The Sec S3c2443x Test B D Driver is

| Parameter | Meaning | |-----------|---------| | mode | 0 = buffer‑overflow test, 1 = timing jitter, 2 = fault‑injection | | iterations | Number of stress cycles (max 10 000) | | seed | Pseudo‑random seed for pattern generation | Initialize hardware */ sec_testbd_reset(testbd)

device_create(class, NULL, dev_num, NULL, "sec_testbd"); return 0;

/* 4. Register char device */ ret = alloc_chrdev_region(&dev_num, 0, 1, "sec_testbd"); if (ret) return ret; cdev_init(&testbd->cdev, &sec_testbd_fops); testbd->cdev.owner = THIS_MODULE; ret = cdev_add(&testbd->cdev, dev_num, 1); if (ret) goto err_unregister;