#include #include "boot.h" #include "gpt.h" #include "uart.h" #include "spi.h" #include "sd.h" #include "time.h" #include "riscv.h" #include "fail.h" /* int disk_read(BYTE * buf, LBA_t sector, UINT count, BYTE card_type) { */ /* /\* This is not needed. This has everything to do with the FAT */ /* filesystem stuff that I'm not including. All I need to do is */ /* initialize the SD card and read from it. Anything in here that is */ /* checking for potential errors, I'm going to have to temporarily */ /* do without. */ /* *\/ */ /* // if (!count) return RES_PARERR; */ /* /\* if (drv_status & STA_NOINIT) return RES_NOTRDY; *\/ */ /* uint32_t response[4]; */ /* struct sdc_regs * regs = (struct sdc_regs *)SDC; */ /* /\* Convert LBA to byte address if needed *\/ */ /* if (!(card_type & CT_BLOCK)) sector *= 512; */ /* while (count > 0) { */ /* UINT bcnt = count > MAX_BLOCK_CNT ? MAX_BLOCK_CNT : count; */ /* unsigned bytes = bcnt * 512; */ /* if (send_data_cmd(bcnt == 1 ? CMD17 : CMD18, sector, buf, bcnt, response) < 0) return 1; */ /* if (bcnt > 1 && send_cmd(CMD12, 0, response) < 0) return 1; */ /* sector += (card_type & CT_BLOCK) ? bcnt : bytes; */ /* count -= bcnt; */ /* buf += bytes; */ /* } */ /* return 0;; */ /* } */ // Need to convert this /* void print_progress(size_t count, size_t max) { */ /* const int bar_width = 50; */ /* float progress = (float) count / max; */ /* int bar_length = progress * bar_width; */ /* printf("\r["); */ /* for (int i = 0; i < bar_length; ++i) { */ /* printf("#"); */ /* } */ /* for (int i = bar_length; i < bar_width; ++i) { */ /* printf("-"); */ /* } */ /* printf("] %.2f%%", progress * 100); */ /* fflush(stdout); */ /* } */ int disk_read(BYTE * buf, LBA_t sector, UINT count) { uint64_t r; UINT i; volatile uint8_t *p = buf; UINT modulus = count/50; uint8_t crc = 0; crc = crc7(crc, 0x40 | SD_CMD_READ_BLOCK_MULTIPLE); crc = crc7(crc, (sector >> 24) & 0xff); crc = crc7(crc, (sector >> 16) & 0xff); crc = crc7(crc, (sector >> 8) & 0xff); crc = crc7(crc, sector & 0xff); crc = crc | 1; if ((r = sd_cmd(18, sector & 0xffffffff, crc) & 0xff) != 0x00) { print_uart("disk_read: CMD18 failed. r = 0x"); print_uart_byte(r); print_uart("\r\n"); fail(); // return -1; } print_uart("\r Blocks loaded: "); print_uart("0"); print_uart("/"); print_uart_dec(count); // write_reg(SPI_CSMODE, SIFIVE_SPI_CSMODE_MODE_HOLD); // Begin reading blocks for (i = 0; i < count; i++) { uint16_t crc, crc_exp; uint64_t n = 0; // Wait for data token while((r = spi_dummy()) != SD_DATA_TOKEN); // println_with_byte("Received data token: 0x", r & 0xff); // println_with_dec("Block ", i); // Read block into memory. /* for (int j = 0; j < 64; j++) { */ /* *buf = sd_read64(&crc); */ /* println_with_addr("0x", *buf); */ /* buf = buf + 64; */ /* } */ crc = 0; n = 512; do { uint8_t x = spi_dummy(); *p++ = x; crc = crc16(crc, x); } while (--n > 0); // Read CRC16 and check crc_exp = ((uint16_t)spi_dummy() << 8); crc_exp |= spi_dummy(); if (crc != crc_exp) { print_uart("Stinking CRC16 didn't match on block read.\r\n"); print_uart_int(i); print_uart("\r\n"); //return -1; fail(); } if ( (i % modulus) == 0 ) { print_uart("\r Blocks loaded: "); print_uart_dec(i); print_uart("/"); print_uart_dec(count); } } sd_cmd(SD_CMD_STOP_TRANSMISSION, 0, 0x01); print_uart("\r Blocks loaded: "); print_uart_dec(count); print_uart("/"); print_uart_dec(count); // write_reg(SPI_CSMODE, SIFIVE_SPI_CSMODE_MODE_AUTO); //spi_txrx(0xff); print_uart("\r\n"); return 0; } // copyFlash: -------------------------------------------------------- // A lot happens in this function: // * The Wally banner is printed // * The peripherals are initialized void copyFlash(QWORD address, QWORD * Dst, DWORD numBlocks) { int ret = 0; // Initialize UART for messages init_uart(20000000, 115200); // Print the wally banner print_uart(BANNER); /* print_uart("System clock speed: "); */ /* print_uart_dec(SYSTEMCLOCK); */ /* print_uart("\r\n"); */ // Intialize the SD card init_sd(SYSTEMCLOCK, 3000000); ret = gpt_load_partitions(); }