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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openocd.texi | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index d9cb4ea6..4244a1e8 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -4812,6 +4812,41 @@ As noted above, the @command{nand device} command allows driver-specific options and behaviors. Some controllers also activate controller-specific commands. +@deffn {NAND Driver} at91sam9 +This driver handles the NAND controllers found on AT91SAM9 family chips from +Atmel. It takes two extra parameters: address of the NAND chip; +address of the ECC controller. +@example +nand device $NANDFLASH at91sam9 $CHIPNAME 0x40000000 0xfffffe800 +@end example +AT91SAM9 chips support single-bit ECC hardware. The @code{write_page} and +@code{read_page} methods are used to utilize the ECC hardware unless they are +disabled by using the @command{nand raw_access} command. There are four +additional commands that are needed to fully configure the AT91SAM9 NAND +controller. Two are optional; most boards use the same wiring for ALE/CLE: +@deffn Command {at91sam9 cle} num addr_line +Configure the address line used for latching commands. The @var{num} +parameter is the value shown by @command{nand list}. +@end deffn +@deffn Command {at91sam9 ale} num addr_line +Configure the address line used for latching addresses. The @var{num} +parameter is the value shown by @command{nand list}. +@end deffn + +For the next two commands, it is assumed that the pins have already been +properly configured for input or output. +@deffn Command {at91sam9 rdy_busy} num pio_base_addr pin +Configure the RDY/nBUSY input from the NAND device. The @var{num} +parameter is the value shown by @command{nand list}. @var{pio_base_addr} +is the base address of the PIO controller and @var{pin} is the pin number. +@end deffn +@deffn Command {at91sam9 ce} num pio_base_addr pin +Configure the chip enable input to the NAND device. The @var{num} +parameter is the value shown by @command{nand list}. @var{pio_base_addr} +is the base address of the PIO controller and @var{pin} is the pin number. +@end deffn +@end deffn + @deffn {NAND Driver} davinci This driver handles the NAND controllers found on DaVinci family chips from Texas Instruments. |