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authorWolfgang Denk <wd@denx.de>2012-07-30 20:39:52 +0200
committerWolfgang Denk <wd@denx.de>2012-07-30 20:39:52 +0200
commitb98b611502f5e0a85a1f8e15cf46c470cb105614 (patch)
treecafae797ef1f031088e7a988d8e1eaa36ea016a3 /board/xes/xpedite1000/README
parent190649fb4309d1bc0fe7732fd0f951cb6440f935 (diff)
parent15ae8a31ca5d3860b0957edec4fca373daff6bb5 (diff)
Merge branch 'next' of git://git.denx.de/u-boot
* 'next' of git://git.denx.de/u-boot: MPC8xx: Fixup warning in arch/powerpc/cpu/mpc8xx/cpu.c doc: cleanup - move board READMEs into respective board directories net: sh_eth: add support for SH7757's GETHER net: sh_eth: modify the definitions of regsiter net: sh_eth: add SH_ETH_TYPE_ condition net: sh_eth: clean up for the SH7757's code net: fec_mxc: Fix MDC for xMII net: fec_mxc: Fix setting of RCR for xMII net: nfs: make NFS_TIMEOUT configurable net: Inline the new eth_setenv_enetaddr_by_index function net: allow setting env enetaddr from net device setting net/designware: Consecutive writes to the same register to be avoided CACHE: net: asix: Fix asix driver to work with data cache on net: phy: micrel: make ksz9021 phy accessible net: abort network initialization if the PHY driver fails phylib: phy_startup() should return an error code on failure net: tftp: fix type of block arg to store_block Signed-off-by: Wolfgang Denk <wd@denx.de>
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+ XES XPedite1000 Board
+
+ Last Update: December 29, 2003
+=======================================================================
+
+This file contains some handy info regarding U-Boot and the XES
+XPedite1000 PPC440GX PrPMC board. See the README.ppc440 for additional
+information.
+
+
+SWITCH SETTINGS & JUMPERS
+==========================
+
+Jumpers selected for AMD29LV040B flash part as the boot flash.
+
+
+I2C Strap EEPROM & Environment Settings
+=======================================
+
+The XPedite1000 uses a single I2C eeprom for the 440 strappings and for
+the environment variables. The first page (256 bytes) contains the
+strappings and the 2 EMAC HW Ethernet addresses. Be careful not to
+change the 1st page of the EEPROM! Unpopulated jumper J560 can get you
+out of trouble as it disables the strapping read from EEPROM.
+
+I2C probe
+=====================
+
+The i2c utilities work and have been tested on Rev B. of the 440GX. See
+README.ebony for more information about i2c probing with the 440.
+
+
+GETTING OUT OF I2C TROUBLE
+===========================
+
+(Direct quote from README.ebony)
+If you're like me ... you may have screwed up your bootstrap serial
+eeprom ... or worse, your SPD eeprom when experimenting with the
+i2c commands. If so, here are some ideas on how to get out of
+trouble:
+
+Serial bootstrap eeprom corruption:
+-----------------------------------
+Power down the board and set the following straps:
+
+J560 - closed
+
+This will select the default sys0 and sys1 settings (the serial
+eeproms are not used). Then power up the board and fix the serial
+eeprom using the 'i2c mm' command. Here are the values I currently
+use:
+
+=> i2c md 50 0 10
+
+0000: 85 7d 42 06 07 80 11 00 00 00 00 00 00 00 00 00 .}B.............
+
+Once you have the eeproms set correctly change the
+J560 straps as you desire.
+
+
+PPC440GX Ethernet EMACs
+=======================
+
+The XES XPedite1000 uses emac 2 & 3 and ignores emac 0 & 1. PHYs are connected
+only to emac 2 & 3. The HW Ethernet addresses are read from the i2c eeprom and
+placed in the bd info structure for enet2addr and enet3addr. The ethernet driver
+senses that enetaddr and enet1addr are 0's and does not use them.
+
+As of this writing gigabit ethernet and the TCPIP acceleration hardware is not
+supported.
+
+
+Flash Support
+=============
+
+As of this writing, there is support for the 1/2mb boot flash only. User flash
+is not yet supported.
+
+
+Regards,
+--Travis
+<travis.sawyer@sandburst.com>