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authorWolfgang Denk <wd@denx.de>2012-04-29 23:57:39 +0000
committerWolfgang Denk <wd@denx.de>2012-07-29 15:42:02 +0200
commit702e6014f15b307f144fa03ecaf83a8446c6802a (patch)
tree8c9360248c257f52c1487d9e6cbba3f2dc38e294 /board/fads
parent631fea8f2d70aa5eb7c49b33039971dfc61bba88 (diff)
downloadu-boot-linaro-stable-702e6014f15b307f144fa03ecaf83a8446c6802a.tar.gz
doc: cleanup - move board READMEs into respective board directories
Also drop a few files referring to no longer / not yet supported boards. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Kim Phillips <kim.phillips@freescale.com> Cc: Andy Fleming <afleming@gmail.com> Cc: Jason Jin <jason.jin@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
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+/*
+ * (C) Copyright 2000
+ * Dave Ellis, SIXNET, dge@sixnetio.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+Using the Motorola MPC8XXFADS development board
+===============================================
+
+CONFIGURATIONS
+--------------
+
+There are ready-to-use default configurations available for the
+FADS823, FADS850SAR and FADS860T. The FADS860T configuration also
+works for the 855T processor.
+
+LOADING U-Boot INTO FADS FLASH MEMORY
+--------------------------------------
+
+MPC8BUG can load U-Boot into the FLASH memory using LOADF.
+
+ loadf u-boot.srec 100000
+
+
+STARTING U-Boot FROM MPC8BUG
+-----------------------------
+
+To start U-Boot from MPC8BUG:
+
+1. Reset the board:
+ reset :h
+
+2. Change BR0 and OR0 back to their values at reset:
+ rms memc br0 00000001
+ rms memc or0 00000d34
+
+3. Modify DER so MPC8BUG gets control only when it should:
+ rms der 2002000f
+
+4. Start as if from reset:
+ go 100
+
+This is NOT exactly the same as starting U-Boot without
+MPC8BUG. MPC8BUG turns off the watchdog as part of the hard reset.
+After it does the reset it writes SYPCR (to disable the watchdog)
+and sets BR0 and OR0 to map the FLASH at 0x02800000 (and does lots
+of other initialization). That is why it is necessary to set BR0
+and OR0 to map the FLASH everywhere. U-Boot can't turn on the
+watchdog after that, since MPC8BUG has used the only chance to write
+to SYPCR.
+
+Here is a bizarre sequence of MPC8BUG and U-Boot commands that lets
+U-Boot write to SYPCR. It works with MPC8BUG 1.5 and an 855T
+processor (your mileage may vary). It is probably better (and a lot
+easier) just to accept having the watchdog disabled when the debug
+cable is connected.
+
+in MPC8BUG:
+ reset :h
+ rms memc br0 00000001
+ rms memc or0 00000d34
+ rms der 2000f
+ go 100
+
+Now U-Boot is running with the MPC8BUG value for SYPCR. Use the
+U-Boot 'reset' command to reset the board.
+ =>reset
+Next, in MPC8BUG:
+ rms der 2000f
+ go
+
+Now U-Boot is running with the U-Boot value for SYPCR.