forked from Imagelibrary/rtems
65f868cac6
Add rtems_counter_frequency() API function. Use it to initialize the counter value converter via the new system initialization step (RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation and the counter converter. It avoids an unnecessary pull in of the 64-bit integer division from libgcc. Update #3456.
# Adapted from vitex BSP BSP NAME: Virtex BOARD: Xilinx ML-403 and (hopefully) any vitex/PPC based board BUS: N/A CPU FAMILY: ppc CPU: PowerPC 405GP COPROCESSORS: N/A MODE: 32 bit mode DEBUG MONITOR: PERIPHERALS =========== TIMERS: 405GP internal SERIAL PORTS: Xilinx consolelite REAL-TIME CLOCK: none DMA: Xilinx vitex internal VIDEO: none SCSI: none NETWORKING: Xilinx TEMAC DRIVER INFORMATION ================== CLOCK DRIVER: PPC Decrementer IOSUPP DRIVER: N/A SHMSUPP: N/A TIMER DRIVER: N/A TTY DRIVER: consoleelite STDIO ===== PORT: Console port 0 ELECTRICAL: RS-232 BAUD: as defined in FPGA design BITS PER CHARACTER: 8 PARITY: None STOP BITS: 1 Notes ===== Board description ----------------- clock rate: 234 MHz ROM: 16MByte FLASH RAM: 64MByte DRAM Virtex only supports single processor operations. Configuration ------------- This board support package is written for a typical virtex/PPC FPGA system. The rough features of such a board are described above. When a new virtex FPGA system is created (using the Xilinx design software), a parameter file "xparameters.h" is also created, which describes the basic features of the hardware (like peripherals included, interrupt routing etc.). This BSP normally takes its basic HW description for the file "xparameters_dflt.h", which describes my FPGA system. When this BSP should run on a different hardware, a path to the proper "xparameters.h" can be provided on the "configure" command line. For adapting this BSP to other boards, you can specify several configuration options at the configure command line (use "./configure --help" in this directory). Here is an example for the top-level configure invocation: /path/to/rtems/sources/configure \ --target=powerpc-rtems4.11 \ --enable-rtemsbsp=virtex \ --enable-maintainer-mode \ --enable-posix \ --enable-tests \ --disable-networking \ 'RTEMS_XPARAMETERS_H="/path/to/xparameters.h"' \ VIRTEX_RAM_ORIGIN=0xfffc0000 \ VIRTEX_RAM_LENGTH=0x3ffec \ VIRTEX_RESET_ORIGIN=0xffffffec