RTEMS: bsps/powerpc/mpc55xxevb/start/flash_support.c File Reference

| RTEMS 5.4-rc2

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flash_support.c File Reference
Board Support Packages » PowerPC » NXP MPC55XX and MPC56XX

MPC55XX flash memory support. More...

`#include <errno.h>`
`#include <sys/types.h>`
`#include <mpc55xx/regs.h>`
`#include <mpc55xx/mpc55xx.h>`
`#include <libcpu/powerpc-utility.h>`
`#include <rtems/powerpc/registers.h>`

## Detailed Description

MPC55XX flash memory support.

I set my MMU up to map what will finally be in flash into RAM and at the same time I map the flash to a different location. When the software is tested I can use this to copy the RAM version of the program into the flash and when I reboot I'm running out of flash.

I use a flag word located after the boot configuration half-word to indicate that the MMU should be left alone, and I don't include the RCHW or that flag in my call to this routine.

There are obviously other uses for this.