# Configuration variables: # STAGE1_FILE, STAGE2_FILE set STAGE1_FILE fw.bin set STAGE2_FILE usb_boot.bin set EXTCLK 12 # Define the external crystal in MHz set CPUSPEED 252 # Define the PLL output frequency set PHMDIV 3 # Define the frequency divider ratio of PLL=CCLK:PCLK=HCLK=MCLK set BAUDRATE 57600 # Define the uart baudrate set USEUART 0 # UART number set SDRAM_BUSWIDTH 16 # The bus width of the SDRAM in bits (16|32) set SDRAM_BANKS 4 # The bank number (2|4) set SDRAM_ROWADDR 13 # Row address width in bits (11-13) set SDRAM_COLADDR 9 # Column address width in bits (8-12) set SDRAM_ISMOBILE 0 # Define whether SDRAM is mobile SDRAM (only or Jz4750), 1: yes 0: no set SDRAM_ISBUSSHARE 1 # Define whether SDRAM bus share with NAND 1:shared 0:unshared set NAND_BUSWIDTH 8 # The width of the NAND flash chip in bits (8|16|32) set NAND_ROWCYCLES 3 # The row address cycles (2|3) set NAND_PAGESIZE 2048 # The page size of the NAND chip in bytes(512|2048|4096) set NAND_PAGEPERBLOCK 128 # The page number per block set NAND_FORCEERASE 1 # The force to erase flag (0|1) set NAND_OOBSIZE 64 # OOB size in byte set NAND_ECCPOS 8 # Specify the ECC offset inside the oob data (0-[oobsize-1]) set NAND_BADBLOCKPOS 0 # Specify the badblock flag offset inside the oob (0-[oobsize-1]) set NAND_BADBLOCKPAGE 0 # Specify the page number of badblock flag inside a block(0-[PAGEPERBLOCK-1]) set NAND_PLANENUM 1 # The planes number of target nand flash set NAND_BCHBIT 8 # Specify the hardware BCH algorithm for 4750 (4|8) set NAND_WPPIN 0 # Specify the write protect pin number set NAND_BLOCKPERCHIP 4096 # Specify the block number per chip,0 means ignore rebuildcfg