config.help

是关于linux2.5.1的完全源码

  Most products has a so called TEST button on PA1, if that's true
  use 02 here.
  Use 00 if there are no buttons on PA.
  If the bitmask is <> 00 a button driver will be included in the gpio
  driver. Etrax general I/O support must be enabled.

CONFIG_ETRAX_PA_CHANGEABLE_DIR
  This is a bitmask with information of what bits in PA that a user
  can change direction on using ioctl's.
  Bit set = changeable.
  You probably want 00 here.

CONFIG_ETRAX_PA_CHANGEABLE_BITS
  This is a bitmask with information of what bits in PA that a user
  can change change the value on using ioctl's.
  Bit set = changeable.
  You probably want 00 here.

CONFIG_ETRAX_PB_CHANGEABLE_DIR
  This is a bitmask with information of what bits in PB that a user
  can change direction on using ioctl's.
  Bit set = changeable.
  You probably want 00 here.

CONFIG_ETRAX_PB_CHANGEABLE_BITS
  This is a bitmask with information of what bits in PB that a user
  can change the value on using ioctl's.
  Bit set = changeable.
  You probably want 00 here.

CONFIG_ETRAX_GPIO
  Enables the Etrax general port device (major 120, minors 0 and 1).
  You can use this driver to access the general port bits. It supports
  these ioctl's:
        #include <linux/etraxgpio.h>
       fd = open("/dev/gpioa", O_RDWR); // or /dev/gpiob
       ioctl(fd, _IO(ETRAXGPIO_IOCTYPE, IO_SETBITS), bits_to_set);
       ioctl(fd, _IO(ETRAXGPIO_IOCTYPE, IO_CLRBITS), bits_to_clear);
       val = ioctl(fd, _IO(ETRAXGPIO_IOCTYPE, IO_READBITS), NULL);
  Remember that you need to setup the port directions appropriately in
  the General configuration.

CONFIG_ETRAX_SERIAL
  Enables the ETRAX 100 serial driver for ser0 (ttyS0)
  You probably want this enabled.

CONFIG_ETRAX_SERIAL_FAST_TIMER
  Select this to have the serial DMAs flushed at a higher rate than
  normally, possible by using the fast timer API, the timeout is
  approx. 4 character times.
  If unsure, say N.

CONFIG_ETRAX_SERIAL_FLUSH_DMA_FAST
  Select this to have the serial DMAs flushed at a higher rate than
  normally possible through a fast timer interrupt (currently at
  15360 Hz).
  If unsure, say N.

CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS
  Number of timer ticks between flush of receive fifo (1 tick = 10ms).
  Try 0-3 for low latency applications.  Approx 5 for high load
  applications (e.g. PPP).  Maybe this should be more adaptive some
  day...

CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_ON_PB
  Enables the status and control signals DTR, RI, DSR and CD on PB for
  ser0.

CONFIG_ETRAX_SERIAL_PORT1
  Enables the ETRAX 100 serial driver for ser1 (ttyS1).

CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_ON_PB
  Enables the status and control signals DTR, RI, DSR and CD on PB for
  ser1.

CONFIG_ETRAX_SERIAL_PORT2
  Enables the ETRAX 100 serial driver for ser2 (ttyS2).

CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_ON_PA
  Enables the status and control signals DTR, RI, DSR and CD on PA for
  ser2.

CONFIG_ETRAX_SERIAL_PORT3
  Enables the ETRAX 100 serial driver for ser3 (ttyS3).

CONFIG_ETRAX_RS485
  Enables support for RS-485 serial communication.  For a primer on
  RS-485, see <http://www.hw.cz/english/docs/rs485/rs485.html>.

CONFIG_ETRAX_RS485_ON_PA
  Control Driver Output Enable on RS485 tranceiver using a pin on PA
  port:
          Axis 2400/2401 uses PA 3.

CONFIG_ETRAX_RS485_ON_PA_BIT
  Control Driver Output Enable on RS485 tranceiver using a this bit
  on PA port.

CONFIG_ETRAX_SER0_DTR_ON_PB_BIT
  Specify the pin of the PB port to carry the DTR signal for serial
  port 0.

CONFIG_ETRAX_SER0_RI_ON_PB_BIT
  Specify the pin of the PB port to carry the RI signal for serial
  port 0.

CONFIG_ETRAX_SER0_DSR_ON_PB_BIT
  Specify the pin of the PB port to carry the DSR signal for serial
  port 0.

CONFIG_ETRAX_SER0_CD_ON_PB_BIT
  Specify the pin of the PB port to carry the CD signal for serial
  port 0.

CONFIG_ETRAX_SER1_DTR_ON_PB_BIT
  Specify the pin of the PB port to carry the DTR signal for serial
  port 1.

CONFIG_ETRAX_SER1_RI_ON_PB_BIT
  Specify the pin of the PB port to carry the RI signal for serial
  port 1.

CONFIG_ETRAX_SER1_DSR_ON_PB_BIT
  Specify the pin of the PB port to carry the DSR signal for serial
  port 1.

CONFIG_ETRAX_SER1_CD_ON_PB_BIT
  Specify the pin of the PB port to carry the CD signal for serial
  port 1.

CONFIG_ETRAX_SER2_DTR_ON_PA_BIT
  Specify the pin of the PA port to carry the DTR signal for serial
  port 2.

CONFIG_ETRAX_SER2_RI_ON_PA_BIT
  Specify the pin of the PA port to carry the RI signal for serial
  port 2.

CONFIG_ETRAX_SER2_DSR_ON_PA_BIT
  Specify the pin of the PA port to carry the DTR signal for serial
  port 2.

CONFIG_ETRAX_SER2_CD_ON_PA_BIT
  Specify the pin of the PA port to carry the CD signal for serial
  port 2.

CONFIG_ETRAX_RS485_DISABLE_RECEIVER
  It's necessary to disable the serial receiver to avoid serial
  loopback.  Not all products are able to do this in software only.
  Axis 2400/2401 must disable receiver.

CONFIG_ETRAX_I2C
  Enables an I2C driver on PB0 and PB1 on ETRAX100.
  EXAMPLE usage:
        i2c_arg = I2C_WRITEARG(STA013_WRITE_ADDR, reg, val);
       ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_WRITEREG), i2c_arg);
       i2c_arg = I2C_READARG(STA013_READ_ADDR, reg);
       val = ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_READREG), i2c_arg);

CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C
  Select whether to use the special I2C mode in the PB I/O register or
  not.  This option needs to be selected in order to use some drivers
  that access the I2C I/O pins directly instead of going through the
  I2C driver, like the DS1302 realtime-clock driver.  If you are
  uncertain, choose Y here.

CONFIG_ETRAX_I2C_EEPROM
  Enables I2C EEPROM (non-volatile RAM) on PB0 and PB1 using the I2C
  driver.  Select size option: Probed, 2k, 8k, 16k.
  (Probing works for 2k and 8k but not that well for 16k)

CONFIG_ETRAX_I2C_EEPROM_16KB
  Use a 16kB EEPROM.

CONFIG_ETRAX_I2C_EEPROM_2KB
  Use a 2kB EEPROM.

CONFIG_ETRAX_I2C_EEPROM_8KB
  Use a 8kB EEPROM.

CONFIG_ETRAX_I2C_EEPROM_PROBE
  Specifies size or auto probe of the EEPROM size.
  Options: Probed, 2k, 8k, 16k.
  (Probing works for 2k and 8k but not that well for 16k)

CONFIG_ETRAX_DS1302
  Enables the driver for the DS1302 Real-Time Clock battery-backed
  chip on some products.  The kernel reads the time when booting, and
  the date can be set using ioctl(fd, RTC_SET_TIME, &rt) with rt a
  rtc_time struct (see <file:include/asm-cris/rtc.h>) on the /dev/rtc
  device, major 121.  You can check the time with cat /proc/rtc, but
  normal time reading should be done using libc function time and
  friends.

CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
  If your product has the RST signal line for the DS1302 RTC on the
  Generic Port then say Y here, otherwise leave it as N in which
  case the RST signal line is assumed to be connected to Port PB
  (just like the SCL and SDA lines).

CONFIG_ETRAX_DS1302_RSTBIT
  This is the bit number for the RST signal line of the DS1302 RTC on
  the selected port. If you have selected the generic port then it
  should be bit 27, otherwise your best bet is bit 5.

CONFIG_ETRAX_DS1302_SCLBIT
  This is the bit number for the SCL signal line of the DS1302 RTC on
  Port PB. This is probably best left at 3.

CONFIG_ETRAX_DS1302_SDABIT
  This is the bit number for the SDA signal line of the DS1302 RTC on
  Port PB. This is probably best left at 2.

CONFIG_ETRAX_IDE_CSP0_8_RESET
  Configures the pin used to reset the IDE bus.

CONFIG_ETRAX_IDE_DELAY
  Sets the time to wait for disks to regain consciousness after reset.

CONFIG_ETRAX_IDE_G27_RESET
  Configures the pin used to reset the IDE bus.

CONFIG_ETRAX_IDE_PB7_RESET
  Configures the pin used to reset the IDE bus.

CONFIG_ETRAX_USB_HOST
  This option enables the host functionality of the ETRAX 100LX
  built-in USB controller. In host mode the controller is designed
  for CTRL and BULK traffic only, INTR traffic may work as well
  however (depending on the requirements of timeliness).

CONFIG_ETRAX_USB_HOST_PORT1
  This option enables port 1 of the ETRAX 100LX USB root hub (RH).

CONFIG_ETRAX_USB_HOST_PORT2
  This option enables port 2 of the ETRAX 100LX USB root hub (RH).

CONFIG_ETRAX_ETHERNET
  This option enables the ETRAX 100LX built-in 10/100Mbit Ethernet
  controller.

CONFIG_ETRAX_SYNCHRONOUS_SERIAL
  This option enables support for the ETRAX 100LX built-in
  synchronous serial ports. These ports are used for continuous
  streamed data like audio. The default setting is compatible
  with the STA 013 MP3 decoder, but can easily be tuned to fit
  any other audio encoder/decoder and SPI.

CONFIG_ETRAX_SYNCHRONOUS_SERIAL_PORT0
  Enables the ETRAX 100LX synchronous serial port 0 (syncser0).

CONFIG_ETRAX_SYNCHRONOUS_SERIAL0_DMA
  Makes synchronous serial port 0 use DMA.

CONFIG_ETRAX_SYNCHRONOUS_SERIAL_PORT1
  Enables the ETRAX 100LX synchronous serial port 1 (syncser1).

CONFIG_ETRAX_SYNCHRONOUS_SERIAL1_DMA
  Makes synchronous serial port 1 use DMA.

CONFIG_JULIETTE
  The ARTPEC-1 is a video-compression chip used in the AXIS 2100
  network camera, which is built around an ETRAX-100 board.  With this
  option selected, the ETRAX kernel configures a DMA channel at boot
  time to talk to the chip.

CONFIG_ETRAX_AXISFLASHMAP
  This option enables MTD mapping of flash devices.  Needed to use
  flash memories.  If unsure, say Y.

CONFIG_ETRAX_PTABLE_SECTOR
  Byte-offset of the partition table in the first flash chip.
  The default value is 64kB and should not be changed unless
  you know exactly what you are doing. The only valid reason
  for changing this is when the flash block size is bigger
  than 64kB (e.g. when using two parallel 16 bit flashes).

CONFIG_ETRAX_PARPORT
  Say Y here to enable the ETRAX on-board parallel ports.

CONFIG_ETRAX_PARALLEL_PORT0
  Say Y here to enable parallel port 0.

CONFIG_ETRAX_PARALLEL_PORT1
  Say Y here to enable parallel port 1.