Add support for the MPC8349E-mITX-GP, a stripped-down version of the
MPC8349E-mITX. Bonus features include support for low-boot (BMS bit in
HRCW is 0) for the ITX and a README for the ITX and the ITX-GP.
Signed-off-by: Timur Tabi <timur@freescale.com>
I've redone the SBC8349 support to match git-current, which
incorporates all the MPC834x updates from Freescale since the 1.1.6
release, including the DDR changes.
I've kept all the SBC8349 files as parallel as possible to the
MPC8349EMDS ones for ease of maintenance and to allow for easy
inspection of what was changed to support this board. Hence the SBC8349
U-Boot has FDT support and everything else that the MPC8349EMDS has.
Fortunately the Freescale updates added support for boards using CS0,
but I had to change spd_sdram.c to allow for board specific settings for
the sdram_clk_cntl (it is/was hard coded to zero, and that remains the
default if the board doesn't specify a value.)
Hopefully this should be mergeable as-is and require no whitespace
cleanups or similar, but if something doesn't measure up then let me
know and I'll fix it.
Thanks,
Paul.
The conflicts due to a new mpc7448 p3m7448 board is in the main tree.
Merge branch 'master' into hpc2
Conflicts:
MAKEALL
cpu/74xx_7xx/cpu.c
cpu/74xx_7xx/cpu_init.c
cpu/74xx_7xx/speed.c
(1) remove some C++ comments.
(2) remove trailing white space.
(3) remove trailing empty line.
(4) Indentation by table.
(5) remove {} in one line condition.
(6) add space before '(' in function call.
Remove some weird printf () output.
Add necessary comments.
Modified Makefile to support building in a separate directory.
chpart, nboot and NAND subsystem related commands now accept also partition
name to specify offset.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Stefan Roese <sr@denx.de>
Patch by Haavard Skinnemoen, 6 Sep 2006 16:23:02 +0200
This patch adds common infrastructure code for the Atmel AVR32
architecture. See doc/README.AVR32 for details.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
- JFFS2 related commands implemented in mtd-utils style
- Support for bad blocks
- Bad block testing commands
- NAND lock commands
Please take a look at doc/README.nand for more details
Patch by Guido Classen, 10 Oct 2006
- Add support for PPC440EPx & PPC440GRx
- Add support for PPC440EP(x)/GR(x) NAND controller
in cpu/ppc4xx directory
- Add NAND boot functionality for Sequoia board,
please see doc/README.nand-boot-ppc440 for details
- This Sequoia NAND image doesn't support environment
in NAND for now. This will be added in a short while.
Patch by Stefan Roese, 07 Sep 2006
* Added comments and a printf to warn that PCI-X won't
work at 33MHz
Patch by Andy Fleming 17-Mar-2006
Signed-off-by: Andy Fleming <afleming@freescale.com>
AMCC suggested to set the PMU bit to 0 for best performace on
the PPC440 DDR controller.
Please see doc/README.440-DDR-performance for details.
Patch by Stefan Roese, 28 Jul 2006
Patch by Martin Krause, 8 Jun 2006
This patch supports two serial consoles on boards with
a MPC5xxx CPU. The console can be switched at runtime
by setting stdin, stdout and stderr to the desired serial
interface (serial0 or serial1). The PSCs to be used as
console port are definded by CONFIG_PSC_CONSOLE
and CONFIG_PSC_CONSOLE2.
See README.serial_multi for details.
relocate ichache_State to ram
u-boot can run from internal flash
Add EB+MCF-EV123 board support.
Add m68k Boards to MAKEALL
Patch from Jens Scharsig, 08 Aug 2005
Correct addessing errors in platform files.
Split off common core module data from Integrator header files to
include/armcoremodule.h.
Patch by Peter Pearse, 04 Oct 2005
Implemented support for MPC8548CDS board.
Added DDR II support based on SPD values for MPC85xx boards.
This roll-up patch also includes bugfies for the previously
published patches:
DDRII CPO, pre eTSEC, 8548 LBIU, Andy's TSEC, eTSEC 3&4 I/O
- Convert the CPM2 based functionality to use new CONFIG_CPM2
option rather than a myriad of CONFIG_MPC8560-like variants.
Applies to MPC85xx and MPC8260 boards, includes stxgp3 and sbc8560.
Eliminates the CONFIG_MPC8560 option entirely. Distributes the
new CONFIG_CPM2 option to each 8260 board.
Updates for OCOTEA board:
- Changed U-Boot size from 512kByte to 256kByte
- Fixed flash driver to support boot from soldered user flash
- Added README for switch from PIBS firmware to U-Boot
Add call to eth_halt() in net/net.c when called functions fail
after eth_init() has been called.
* Patch by Sam Song, 3 April 2005:
- Update README.Netconsole
- Update README
add SNTP support and expand time server and time offset fields of
DHCP support. See doc/README.SNTP
* Patch by Steven Scholz, 13 Dec 2004:
Fix bug in at91rm920 ethernet driver
add support for the TI OMAP2420 processor and its H4 reference
board
* Patch by Christian Pellegrin, 24 Sep 2004:
Added support for NE2000 compatible (DP8390, DP83902) NICs.
- Add support to revA version of PQ27 and PQ27E.
- Reverted MPC8260ADS baudrate back to original 115200
* Patch by Hojin, 17 Sep 2004:
Fix typo in cfi_flash.c
* Patch by Mark Jonas, 09 September 2004:
mtest's data line test (with CFG_ALT_MEMTEST set) returned a wrong
error message
* Patch by Mark Jonas, 31 August 2004:
Added option CFG_XLB_PIPELINING to enable XLB pipelining. This
improves FTP performance for MPC5200 systems. Enabled for IceCube
by default.
- Improve platform.S code for omap1510inn that detects whether code
is running from SDRAM or not. Patch allows SDRAM to be configured
if code is running out of SRAM at 0x20000000.
* Patch by Frederick Klatt, 30 Aug 2004:
Add support for the Wind River SBC8540/SBC8560 boards
- Introducing the concept of SoCs "./cpu/$(CPU)/$(SOC)"
- creating subdirs for SoCs ./cpu/arm920t/imx and ./cpu/arm920t/s3c24x0
- moving SoC specific code out of cpu/arm920t/ into cpu/arm920t/$(SOC)/
- moving drivers/s3c24x0_i2c.c and drivers/serial_imx.c out of drivers/
into cpu/arm920t/$(SOC)/
Allow clock setting on MPC866/MPC885 series chips according to
environment variable `cpuclk'
* Patch by Yuli Barcohen, 20 Apr 2004:
Remove unnecessary redefine of CPM_DATAONLY_SIZE for MPC826x
Update etags build target
* Improve NetConsole support: add support for broadcast destination
address and buffered input.
* Cleanup compiler warnings for GCC 3.3.x and later
* Fix problem in cmd_jffs2.c introduced by CFG_JFFS_SINGLE_PART patch
- support larger DDR memories up to 2G on the PC8540/8560ADS and
STXGP3 boards
- Made MPC8540/8560ADS be 33Mhz PCI by default.
- Removed moldy CONFIG_RAM_AS_FLASH, CFG_FLASH_PORT_WIDTH_16
and CONFIG_L2_INIT_RAM options.
- Refactor Local Bus initialization out of SDRAM setup.
- Re-implement new version of LBC11/DDR11 errata workarounds.
- Moved board specific PCI init parts out of CPU directory.
- Added TLB entry for PCI-1 IO Memory
- Updated README.mpc85xxads
* Patch by Sascha Hauer, 28 Jun:
- add generic support for Motorola i.MX architecture
- add support for mx1ads, mx1fs2 and scb9328 boards
* Patches by Marc Leeman, 23 Jul 2004:
- Add define for the PCI/Memory Buffer Configuration Register
- corrected comments in cpu/mpc824x/cpu_init.c
* Add support for multiple serial interfaces
(for example to allow modem dial-in / dial-out)
Add support for WindRiver's SBC8560 board
* Patch by Nicolas Lacressonniere, 24 Jun 2004
Small Bugs fixes for "at91rm9200dk" board:
- Timing modifications for SPI DataFlash access
- Fix NAND flash detection bug
* Patch by Nicolas Lacressonniere, 24 Jun 2004:
Add Support for Flash AT49BV6416 for AT91RM9200DK board
Completion of the 8540ADS/8560ADS updates:
Fix some PCI and Rapid I/O memory maps,
Initialize both TSEC 1 and 2,
Initialize SDRAM
Update MAINTAINER for 85xx boards and README.mpc85xxads
- Add support for the Logic Zoom LH7A40x based SDK board(s),
specifically the LPD7A400.
* Patches by Robert Schwebel, 15 May 2004:
- call MAC address reading code also for SMSC91C111;
- make SMSC91C111 timeout configurable, remove duplicate code
- fix get_timer() for PXA
- update doc/README.JFFS2
- use "bootfile" env variable also for jffs2
Add support for OMAP730 Perseus2 Development board
* Patch by Alan J. Luse, 29 Apr 2004:
Fix flash chip-select (OR0) option register setting on FADS boards.
* Patch by Alan J. Luse, 29 Apr 2004:
Report MII network speed and duplex setting properly when
auto-negotiate is not enabled.
* Patch by Jarrett Redd, 29 Apr 2004:
Fix hang on reset on Ocotea board due to flash in wrong mode.
- Add support for the SSV ADNP/ESC1 (Nios Softcore)
* Patch by George G. Davis, 9 Mar 2004:
fix recent build failure for SA1100 target
* Patch by Travis Sawyer, 09 Mar 2004:
Support native interrupt mode for the IBM440GX.
Previously it was running in 440GP compatibility mode.
Fix problems with GCC 3.3.x which changed handling of global
variables explicitly initialized to zero (now in .bss instead of
.data as before).
* Patch by Leon Kukovec, 02 Mar 2004:
add strswab() to fix IDE LBA capacity, firmware and model numbers
on little endian machines
* Patch by Masami Komiya, 02 Mar 2004:
- Remove get_ticks() from NFS code
- Add verification of RPC transaction ID
* Patch by Pierre Aubert, 02 Mar 2004:
cleanup for IDE and USB drivers for MPC5200
NS9750 DevBoard added
* Patch by Pierre AUBERT, 24 Feb 2004
add USB support for MPC5200
* Patch by Steven Scholz, 24 Feb 2004:
- fix MII commands to use values from last command
* Patch by Torsten Demke, 24 Feb 2004:
Add support for the eXalion platform (SPSW-8240, F-30, F-300)
Add support for the Xilinx ML300 platform
* Patch by Stephan Linz, 17 Feb 2004:
Fix watchdog support for NIOS
* Patch by Josh Fryman, 16 Feb 2004:
Fix byte-swapping for cfi_flash.c for different bus widths
* Patch by Jon Diekema, 14 Jeb 2004:
Remove duplicate "FPGA Support" notes from the README file
- update board/emk tree; use common flash driver
- Corrected tested bits in machine check exception in cpu/mpc5xxx/traps.c
[adapted for other PPC CPUs -- wd]
- Added support for the M48T08 on the EVAL5200 board in rtc/mk48t59.c
* Patch by Jon Diekema, 13 Feb 2004:
Call show_boot_progress() whenever POST "FAILED" is printed.
* Patch by Nishant Kamat, 13 Feb 2004:
Add support for TI OMAP1610 H2 Board
Fixes for cpu/arm926ejs/interrupt.c
(based on Richard Woodruff's patch for arm925, 16 Oct 03)
Fix for a timer bug in OMAP1610 Innovator
Add support for CS0 (ROM)/CS3 (Flash) boot in OMAP1610 Innovator and H2
* Patches by Stephan Linz, 12 Feb 2004:
- add support for NIOS timer with variable period preload counter value
- prepare POST framework support for NIOS targets
* Patch by Denis Peter, 11 Feb 2004:
add POST support for the MIP405 board
Add support for NET+50 CPU and ModNET50 board
* Patch by Sam Song, 10 Feb 2004:
Fix typos in cfi_flash.c
* Patch by Leon Kukovec, 10 Feb 2004
Fixed long dir entry slot id calculation in get_vfatname
* Patch by Robin Gilks, 10 Feb 2004:
add "itest" command (operators: -eq, -ne, -lt, -gt, -le, -ge, ==,
!=, <>, <, >, <=, >=)
1: - board/altera/common/flash.c:flash_erase():
o allow interrupts befor get_timer() call
o check-up each erased sector and avoid unexpected timeouts
- board/altera/dk1c20/dk1s10.c:board_early_init_f():
o enclose sevenseg_set() in cpp condition
- remove the ASMI configuration for DK1S10_standard_32 (never present)
- fix some typed in mistakes in the NIOS documentation
2: - split DK1C20 configuration into several header files:
o two new files for each NIOS CPU description
o U-Boot related part is remaining in DK1C20.h
3: - split DK1S10 configuration into several header files:
o two new files for each NIOS CPU description
o U-Boot related part is remaining in DK1S10.h
4: - Add support for the Microtronix Linux Development Kit
NIOS CPU configuration at the Altera Nios Development Kit,
Stratix Edition (DK-1S10)
5: - Add documentation for the Altera Nios Development Kit,
Stratix Edition (DK-1S10)
6: - Add support for the Nios Serial Peripharel Interface (SPI)
(master only)
7: - Add support for the common U-Boot SPI framework at
RTC driver DS1306
ARM memory layout fixes: the abort-stack is now set up in the
correct RAM area, and the BSS is zeroed out as it should be.
Furthermore, the magic variables 'armboot_end' and 'armboot_end_data'
of the linker scripts are replaced by '__bss_start' and '_end',
resp., which is a further step to eliminate unnecessary differences
between the implementation of the CPU architectures.
Add support for IBM PPC440GX. Multiple EMAC Ethernet devices,
select MDI port based on enabled EMAC device.
Add support for XES Inc <http://www.xes-inc.com> XPedite1000 440GX
base PrPMC board.
* Patch by Scott McNutt, 02 Jan 2004:
Add support for the Nios Active Serial Memory Interface (ASMI)
on Cyclone devices
* Patch by Andrea Marson, 16 Dec 2003:
Add support for the PPChameleon ME and HI modules
* Patch by Yuli Barcohen, 22 Dec 2003:
Add support for Motorola DUET ADS board (MPC87x/88x)
- more documentation for NIOS port
- new struct nios_pio_t, struct nios_spi_t
- Reconfiguration for NIOS Development Kit DK1C20:
o move board related code from board/dk1c20
to board/altera/dk1c20
o create a new common source path board/altera/common
and move generic flash access stuff into it
o change/expand configuration file DK1C20.h
- Add support for NIOS Development Kit DK1S10
- Add status LED support for NIOS systems
- Add dual 7-segment LED support for Altera NIOS DevKits
Move most of the timer interrupt related PPC code to ppc_lib/interrupts.c
* Patch by Anders Larsen, 17 Sep 2003:
Bring ARM memory layout in sync with the documentation:
stack and malloc-heap are now located _below_ the U-Boot code
Fix AT91RM9200 ethernet driver
* Patch by Nye Liu, 17 Oct 2003:
Fix typo in include/mpc8xx.h
* Patch by Richard Woodruff, 16 Oct 03:
Fixes for cpu/arm925/interrupt.c
- Initialize timestamp & lastdec vars.
- fix timestamp overflows.
- fix lastdec overflow.
- smarter normalization to allow udelay() below 1ms to work.
* Patch by Scott McNutt, 16 Oct
add networking support for the Altera Nios Development Kit,
Cyclone Edition (DK-1C20)
* Patch by Jon Diekema, 14 Oct 2003:
add hint about doc/README.silent to README file
- Added Motorola CPU 8540/8560 support (cpu/85xx)
- Added Motorola MPC8540ADS board support (board/mpc8540ads)
- Added Motorola MPC8560ADS board support (board/mpc8560ads)
* Minor code cleanup
- add support for Altera Nios-32 CPU
- add support for Nios Cyclone Development Kit (DK-1C20)
* Patch by Steven Scholz, 29 Sep 2003:
- A second parameter for bootm overwrites the load address for
"Standalone Application" images.
- bootm sets environment variable "filesize" to the resulting
(uncompressed) data length for "Standalone Application" images
when autostart is set to "no". Now you can do something like
if bootm $fpgadata $some_free_ram ; then
fpga load 0 $some_free_ram $filesize
fi
* Patch by Denis Peter, 25 Sept 2003:
add support for the MIP405 Rev. C board
* Add PCI support for SL8245 board
* Support IceCube board configurations with 1 x AMD AM29LV065 (8 MB)
or 1 x AM29LV652 (two LV065 in one chip = 16 MB);
Run IPB at 133 Mhz; adjust the MII clock frequency accordingly
* Set BRG_CLK on PM825/826 to 64MHz (VCO_OUT / 4, instead of 16 MHz)
to allow for more accurate baudrate settings
(error now 0.7% at 115 kbps, instead of 3.5% before)
* Patch by Andreas Mohr, 4 Sep 2003:
Fix a lot of spelling errors
allow selection of clock frequency as "make" target
* Implement memory autosizing code for IceCube boards
* Configure network port on INCA-IP for autonegotiation
* Fix overflow problem in network timeout code
* Patch by Richard Woodruff, 8 Aug 2003:
Allow crc32 to be used at address 0x000 (crc32_no_comp, too).
Add support for LynuxWorks Kernel Downloadable Images (KDIs).
Both LynxOS and BlueCat linux KDIs are supported.
* Patch by Richard Woodruff, 25 Jul 2003:
use more reliable reset for OMAP/925T
* Patch by Nye Liu, 25 Jul 2003:
fix typo in mpc8xx.h
* Patch by Richard Woodruff, 24 Jul 2003:
Fixes for cmd_nand.c:
- Fixed null dereferece which could result in incorrect ECC values.
- Added support for devices with no Ready/Busy signal hooked up.
- Added OMAP1510 read/write protect handling.
- Fixed nand.h's ECCPOS. A conflict existed with POS5 and badblock
for non-JFFS2.
- Switched default ECC to be JFFS2.
* Provide consistent interface to standalone applications to access
the 'global_data' structure
Provide a doc/README.standalone more useful to users/developers.
* Make IceCube MGT5100 FEC driver work
applications: instead of using (PPC-specific) system calls we now
use a jump table; please see doc/README.standalone for details
* Patch by Dave Westwood, 24 Jul 2003:
added support for Unity OS (a proprietary OS)
- Correct flash and JFFS2 support for MPC8260ADS
- fix PVR values and clock generation for PowerQUICC II family
(8270/8275/8280)
* Patch by Bernhard Kuhn, 08 Jul 2003:
- add support for M68K targets
* Patch by Ken Chou, 3 Jul:
- Fix PCI config table for A3000
- Fix iobase for natsemi.c
(PCI_BASE_ADDRESS_0 is the IO base register for DP83815)
* Allow to enable "slow" POST routines by key press on power-on
* Fix temperature dependend switching of LCD backlight on LWMON
* Tweak output format for LWMON
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
Fixed rarp boot method for IA32 and other little-endian CPUs.
* Patch by Marc Singer, 28 May 2003:
Added port I/O commands.
* Patch by Matthew McClintock, 28 May 2003
- cpu/mpc824x/start.S: fix relocation code when booting from RAM
- minor patches for utx8245
* Patch by Daniel Engström, 28 May 2003:
x86 update
* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
add nand flash support to SXNI855T configuration
fix/extend nand flash support:
- fix 'nand erase' command so does not erase bad blocks
- fix 'nand write' command so does not write to bad blocks
- fix nand_probe() so handles no flash detected properly
- add doc/README.nand
- add .jffs2 and .oob options to nand read/write
- add 'nand bad' command to list bad blocks
- add 'clean' option to 'nand erase' to write JFFS2 clean markers
- make NAND read/write faster
* Patch by Rune Torgersen, 23 May 2003:
Update for MPC8266ADS board
update for CrayL1 board
* Patch by Pantelis Antoniou, 21 Apr 2003:
add boot support for ARTOS (a proprietary OS)
* Patch by Steven Scholz, 11 Apr 2003:
Add support for RTC DS1338
* Patch by Rod Boyce, 24 Jan 2003:
Fix counting of extended partitions in diskboot command
* MPC823 LCD driver: Fill color map backwards, to allow for steady
display when Linux takes over
* Patch by Erwin Rol, 27 Feb 2003:
Add support for RTEMS (this time for real).
* Add support for "bmp info" and "bmp display" commands to load
bitmap images; this can be used (for example in a "preboot"
command) to display a splash screen very quickly after poweron.
* Add support for 133 MHz clock on INCA-IP board
Add IDMA example code (tested on 8260 only)
* Add support for Purple Board (MIPS64 5Kc)
* Add support for MIPS64 5Kc CPUs
* Fix missing setting of "loadaddr" and "bootfile" on ARM and MIPS
* Patch by Denis Peter, 04 Apr 2003:
- update MIP405-4 board
* Patches by Denis Peter, 03 April 2003:
- fix PCI IRQs on MPL boards
- fix two more un-relocated pointer problems
* Fix behaviour of "run" command:
- print error message iv variable does not exist
- terminate processing of arguments in case of error
* Patches by Peter Figuli, 10 Mar 2003
- Add support for BTUART on PXA platform
- Add support for WEP EP250 (PXA) board
* Fix flash problems on INCA-IP; add tool to allow bruning images to
flash using a BDI2000
* Implement fix for I2C Edge Conditions problem for all boards that
use the bit-banging driver (common/soft_i2c.c)
* Add patches by Robert Schwebel, 31 Mar 2003:
- csb226 board: bring in sync with innokom/memsetup.S
- csb226 board: fix MDREFR handling
- misc doc fixes / extensions
- innokom board: cleanup, MDREFR fix in memsetup.S, config update
- add BOOT_PROGRESS to armlinux.c
- Add port to MPC555/556 microcontrollers
- Add support for cmi customer board with
Intel 28F128J3A, 28F320J3A or 28F640J3A flash.
* Patch by Rick Bronson, 28 Mar 2003:
- fix common/cmd_nand.c
the HSYNC/VSYNC. Requires new CPLD code (Version 101 for Rev. 100
boards, version 153 for Rev. 200 boards).
* Patch by Vladimir Gurevich, 12 Mar 2003:
Fix relocation problem of statically initialized string pointers
in common/cmd_pci.c
* Patch by Kai-Uwe Blöm, 12 Mar 2003:
Cleanup & bug fixes for JFFS2 code:
- the memory mangement was broken. It caused havoc on malloc by
writing beyond the block boundaries.
- the length calculation for files was wrong, sometimes resulting
in short file reads.
- data copying now optionally takes fragment version numbers into
account, to avoid copying from older data.
See doc/README.JFFS2 for details.
- 16/32 MB and 50/80 MHz support with auto-detection for IP860
- ETH05 and BEDBUG support for CU824
- added support for MicroSys CPC45
- new BOOTROM/FLASH0 and DOC base for PM826
* Patch by Robert Schwebel, 12 Mar 2003:
Fix the chpart command on innokom board
* Name cleanup:
mv include/asm-i386/ppcboot-i386.h include/asm-i386/u-boot-i386.h
s/PPCBoot/U-Boot/ in some files
s/pImage/uImage/ in some files
* Patch by Detlev Zundel, 15 Jan 2003:
Fix '' command line quoting
* Patch by The LEOX team, 19 Jan 2003:
- add support for the ELPT860 board
- add support for Dallas ds164x RTC
- Add support for Innokom board
- Don't complain if "install" fails
- README cleanup (remove duplicated lines)
- Update PXA header files
* Add documentation for existing POST code (doc/README.POST)
* Patch by Laudney Ren, 15 Jan 2003:
Fix handling of redundand environment in "tools/envcrc.c"
* Patch by Detlev Zundel, 28 Feb 2003:
Add bedbug support for 824x systems
* Add support for 16 MB flash configuration of TRAB board
* Patch by Erwin Rol, 27 Feb 2003:
Add support for RTEMS
* Add image information to README
* Fix dual PCMCIA slot support (when running with just one
slot populated)
* Add VFD type detection to trab board
* extend drivers/cs8900.c driver to synchronize ethaddr environment
variable with value in the EEPROM
Add code for AmigaOne board
(preliminary merge to U-Boot, still WIP)
* Patch by Jon Diekema, 12 Nov 2002:
- Adding URL for IEEE OUI lookup
- Making the autoboot #defines dependent on CONFIG_AUTOBOOT_KEYED
being defined.
- In the CONFIG_EXTRA_ENV_SETTINGS #define, the root-on-initrd and
root-on-nfs macros are designed to switch how the default boot
method gets defined.
Add support for i386 architecture and AMD SC520 board
* Patch by Pierre Aubert, 12 Nov 2002:
Add support for DOS filesystem and booting from DOS floppy disk
Increase number of network RX buffers (PKTBUFSRX in
"include/net.h") for EEPRO100 based boards (especially SP8240)
which showed "Receiver is not ready" errors when U-Boot was
processing the receive buffers slower than the network controller
was filling them.
* Get rid of obsolete include/mpc74xx.h
