Example

This section describes a dbgBsp for the PowerPC Genesis-2 board. The source files for this example are in powerpc/genesis2/src/dbg. There are three files in this directory:

• dbgBsp.c

• ns16550Bsp.c

• Imakefile

dbgBsp.c:

• Declares and initializes a dbgBsp structure (as defined in bki/dbgBsp.h)

• Implements the board reset function

• Calls the serial driver initialization function and initializes the dbgBsp field in the BootConf structure

• Contains dbgBsp_init, which is an entry point for dbgBsp

ns16550Bsp.c:

• The ns16550_inb(), ns16550_outb() functions provide access to device registers.

• The ns16550_divisor() function calculates the divisor corresponding to a given baud rate, which is then used to program the baud rate in the generic driver.

• The ns16550_ioremap() function is called each time the I/O space mapping is changed.

Imakefile:

• Builds dbgBsp binary file from dbgBsp.o and ns16550.o

• Includes $(DRV_DIST_BIN)/dbg/ns16550.o (the generic driver) and $(DRV_DIST_BIN)/dbg/dbgUartConf.o (the serial line configuration) in the binary file

• Declares dbgBsp_init as the entry point