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