/** * user-sample - CIC-IEC 2026 Stage 3 Evaluation Program * * Reads N groups of 4x4 unsigned matrix multiplications from ExtRAM, * computes C = A x B via the hardware matmul IP, writes results back, * computes CRC32 over the result region, and outputs the required identifiers. * * N is controlled by MATMUL_GROUP_NUM (Makefile / CI passes -DMATMUL_GROUP_NUM=5000). * Local default: 10 (fast testing). For full eval: make MATMUL_GROUP_NUM=5000 * * Data layout (word offsets in ExtRAM): * Input: SRC_BASE = 0, N * 32 words * Result: DST_BASE = SRC_BASE + N * 32, N * 48 words * CRC32 over result region byte stream (N * 192 bytes, little-endian words) */ #include #include /* ─── Configurable group count (default 10 for fast local testing) ─── */ #ifndef MATMUL_GROUP_NUM #define MATMUL_GROUP_NUM 5000 #endif /* ─── BSP globals ─────────────────────────────────────────────────── */ unsigned long UART_BASE = 0xbf000000; unsigned long CONFREG_TIMER_BASE = 0xbf20f100; unsigned long CONFREG_CLOCKS_PER_SEC = 50000000L; unsigned long CORE_CLOCKS_PER_SEC = 33000000L; /* ─── Memory layout ────────────────────────────────────────────────── */ #define EXTRAM_BASE_PHYS 0x1c400000 #define EXTRAM_BASE (0xA0000000 | (EXTRAM_BASE_PHYS & 0x1FFFFFFF)) #define SRC_BASE 0 #define DST_BASE (SRC_BASE + MATMUL_GROUP_NUM * 32) #define RESULT_WORDS (MATMUL_GROUP_NUM * 48) #define RESULT_BYTES (RESULT_WORDS * 4) /* ─── MATMUL IP registers ─────────────────────────────────────────── */ #define MATMUL_BASE 0xbf500000 #define MATMUL_CTRL (MATMUL_BASE + 0x000) #define MATMUL_STATUS (MATMUL_BASE + 0x004) #define MATMUL_A_BASE (MATMUL_BASE + 0x020) #define MATMUL_B_BASE (MATMUL_BASE + 0x060) #define MATMUL_C_BASE (MATMUL_BASE + 0x0a0) #define CTRL_START 0x1 #define STATUS_BUSY 0x1 #define STATUS_DONE 0x2 #define STATUS_ERROR 0x4 /* ─── Convenience macros ──────────────────────────────────────────── */ #define REG_WR(addr, val) (*(volatile uint32_t *)(addr) = (uint32_t)(val)) #define REG_RD(addr) (*(volatile uint32_t *)(addr)) /* ─── CRC32 table (IEEE 802.3, polynomial 0xEDB88320) ─────────────── */ static const uint32_t crc32_table[256] = { 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB30A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }; /* ─── Read N words from IP register space ─────────────────────────── */ static void read_ip(uint32_t base, volatile uint32_t *dst, int n) { for (int i = 0; i < n; i++) dst[i] = REG_RD(base + i * 4); } /* ─── Write N words to IP register space ──────────────────────────── */ static void write_ip(uint32_t base, const volatile uint32_t *src, int n) { for (int i = 0; i < n; i++) REG_WR(base + i * 4, src[i]); } /* ─── Poll IP STATUS until done or error ──────────────────────────── */ static void wait_done(void) { uint32_t status; do { status = REG_RD(MATMUL_STATUS); } while (!(status & (STATUS_DONE | STATUS_ERROR))); } /* ─── CRC32 over ExtRAM result region (little-endian word → byte stream) ─ */ static uint32_t compute_crc32(volatile uint32_t *extram) { uint32_t crc = 0xFFFFFFFF; uint32_t i, w; for (i = 0; i < RESULT_WORDS; i++) { w = extram[DST_BASE + i]; crc = crc32_table[(crc ^ (w & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ ((w >> 8) & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ ((w >> 16) & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ (w >> 24) ) & 0xFF] ^ (crc >> 8); } return crc ^ 0xFFFFFFFF; } /* ═══════════════════════════════════════════════════════════════════ */ int main(void) { volatile uint32_t *extram = (volatile uint32_t *)EXTRAM_BASE; uint32_t a_buf[16], b_buf[16], c_buf[48]; uint32_t crc; int g, i; /* ── Start marker (must be first output) ──────────────────── */ printf("MATMUL_START\n"); /* ── CRC32 self-test (printed inline later) ───────────────── */ const char *test = "123456789"; uint32_t tcrc = 0xFFFFFFFF; for (int ti = 0; test[ti]; ti++) tcrc = crc32_table[(tcrc ^ test[ti]) & 0xFF] ^ (tcrc >> 8); tcrc ^= 0xFFFFFFFF; /* ── Process all groups ───────────────────────────────────── */ for (g = 0; g < MATMUL_GROUP_NUM; g++) { for (i = 0; i < 16; i++) { a_buf[i] = extram[SRC_BASE + g * 32 + i]; b_buf[i] = extram[SRC_BASE + g * 32 + 16 + i]; } write_ip(MATMUL_A_BASE, a_buf, 16); write_ip(MATMUL_B_BASE, b_buf, 16); REG_WR(MATMUL_STATUS, STATUS_DONE | STATUS_ERROR); REG_WR(MATMUL_CTRL, CTRL_START); wait_done(); read_ip(MATMUL_C_BASE, c_buf, 48); for (i = 0; i < 48; i++) extram[DST_BASE + g * 48 + i] = c_buf[i]; if (g == 0) { printf("DBG CRCtest=0x%08lx g=0 rdback=%08lx\n", (unsigned long)tcrc, (unsigned long)extram[DST_BASE]); } if (g == 1) { printf("DBG g=1 A[0..3]=%08lx %08lx %08lx %08lx\n", (unsigned long)a_buf[0], (unsigned long)a_buf[1], (unsigned long)a_buf[2], (unsigned long)a_buf[3]); printf("DBG g=1 B[0..3]=%08lx %08lx %08lx %08lx\n", (unsigned long)b_buf[0], (unsigned long)b_buf[4], (unsigned long)b_buf[8], (unsigned long)b_buf[12]); printf("DBG g=1 C[0..2]=%08lx %08lx %08lx\n", (unsigned long)c_buf[0], (unsigned long)c_buf[1], (unsigned long)c_buf[2]); } } /* ── CRC32 over result region ─────────────────────────────── */ __asm__ __volatile__("" ::: "memory"); // flush write buffer crc = 0xFFFFFFFF; for (i = 0; i < RESULT_WORDS; i++) { uint32_t w = extram[DST_BASE + i]; crc = crc32_table[(crc ^ (w & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ ((w >> 8) & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ ((w >> 16) & 0xFF)) & 0xFF] ^ (crc >> 8); crc = crc32_table[(crc ^ (w >> 24) ) & 0xFF] ^ (crc >> 8); } crc ^= 0xFFFFFFFF; printf("DBG CRC32 loop: i=%d RESULT_WORDS=%d\n", i, RESULT_WORDS); /* ── Final markers ────────────────────────────────────────── */ printf("MATMUL_CRC32=%08lx\n", (unsigned long)crc); printf("MATMUL_DONE\n"); return 0; }