diff options
| author | Haiying Wang <haiying.wang@freescale.com> | 2007-01-22 12:37:30 -0600 |
|---|---|---|
| committer | Jon Loeliger <jdl@freescale.com> | 2007-04-09 14:25:05 -0500 |
| commit | 3d98b85800c80dc68227c8f10bf5c93456d6d054 (patch) | |
| tree | 791444da92489cc58c16e417e33fb73e852323a6 /doc | |
| parent | 6db7d0af2336c126e4d4b2f248cc23516bdd46a8 (diff) | |
| download | u-boot-imx-3d98b85800c80dc68227c8f10bf5c93456d6d054.zip u-boot-imx-3d98b85800c80dc68227c8f10bf5c93456d6d054.tar.gz u-boot-imx-3d98b85800c80dc68227c8f10bf5c93456d6d054.tar.bz2 | |
Add PIXIS FPGA support for MPC8641HPCN board.
Move the 8641HPCN's PIXIS code to the new directory
board/freescale/common/ as it will be shared by
future boards not in the same processor family.
Write a "pixis_reset" command that utilizes the FPGA
reset sequencer to support alternate soft-reset options
such as using the "alternate" flash bank, enabling
the watch dog, or choosing different CPU frequencies.
Add documentation for the pixis_reset to README.mpc8641hpcn.
Signed-off-by: Haiying Wang <haiying.wang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.mpc8641hpcn | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/doc/README.mpc8641hpcn b/doc/README.mpc8641hpcn index 4a650ce..3b88f8b 100644 --- a/doc/README.mpc8641hpcn +++ b/doc/README.mpc8641hpcn @@ -121,3 +121,37 @@ To Flash U-boot into the alternative bank (0xFF800000 - 0xFFBFFFFF): 0xe300_0000 0xe3ff_ffff PCI2/PEX2 IO 16M 0xfe00_0000 0xfeff_ffff Flash(alternate)16M 0xff00_0000 0xffff_ffff Flash(boot bank)16M + +5. pixis_reset command +-------------------- +A new command, "pixis_reset", is introduced to reset mpc8641hpcn board +using the FPGA sequencer. When the board restarts, it has the option +of using either the current or alternate flash bank as the boot +image, with or without the watchdog timer enabled, and finally with +or without frequency changes. + +Usage is; + + pixis_reset + pixis_reset altbank + pixis_reset altbank wd + pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio> + pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio> + +Examples; + + /* reset to current bank, like "reset" command */ + pixis_reset + + /* reset board but use the to alternate flash bank */ + pixis_reset altbank + + /* reset board, use alternate flash bank with watchdog timer enabled*/ + pixis_reset altbank wd + + /* reset board to alternate bank with frequency changed. + * 40 is SYSCLK, 2.5 is COREPLL ratio, 10 is MPXPLL ratio + */ + pixis-reset altbank cf 40 2.5 10 + +Valid clock choices are in the 8641 Reference Manuals. |