[rtems commit] bsp/gen5200: Elaborate option help message

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    0841c07eb66ee37e0c91a2f824209f9b5aa50d32
Changeset: http://git.rtems.org/rtems/commit/?id=0841c07eb66ee37e0c91a2f824209f9b5aa50d32

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Tue Apr  2 15:58:40 2013 +0200

bsp/gen5200: Elaborate option help message

---

 c/src/lib/libbsp/powerpc/gen5200/configure.ac |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/c/src/lib/libbsp/powerpc/gen5200/configure.ac b/c/src/lib/libbsp/powerpc/gen5200/configure.ac
index c5be121..8cb1d0f 100644
--- a/c/src/lib/libbsp/powerpc/gen5200/configure.ac
+++ b/c/src/lib/libbsp/powerpc/gen5200/configure.ac
@@ -54,11 +54,15 @@ RTEMS_BSPOPTS_SET([BSP_GPIOPCR_INITMASK],[*],[0x330F0F77])
 RTEMS_BSPOPTS_SET([BSP_GPIOPCR_INITVAL],[*],[0x01050444])
 
 RTEMS_BSPOPTS_HELP([BSP_GPIOPCR_INITMASK],
-[defines the bits modified in the MPC5200 GPIOPCR register during init. 
- Must match the hardware requirements])
+[Defines the bits cleared in the MPC5200 GPIOPCR register during
+initialization.  Must match the hardware requirements.  Must be consistent with
+BSP_GPIOPCR_INITVAL.  The bits are cleared via BSP_GPIOPCR_INITMASK and then
+set via BSP_GPIOPCR_INITVAL.])
 RTEMS_BSPOPTS_HELP([BSP_GPIOPCR_INITVAL],
-[defines the bit values written in the MPC5200 GPIOPCR register during init. 
- Must match the hardware requirements])
+[Defines the bit set in the MPC5200 GPIOPCR register during initialization.
+Must match the hardware requirements.  Must be consistent with
+BSP_GPIOPCR_INITMASK.  The bits are cleared via BSP_GPIOPCR_INITMASK and then
+set via BSP_GPIOPCR_INITVAL.])
 
 ## on ze30, we have PSC1/4/5/6 ...
 RTEMS_BSPOPTS_SET([BSP_UART_AVAIL_MASK],[pm520_ze30],[0x39])