+++ /dev/null
-This is my attempt to port U-Boot to the x86 platform. This
-work was sponsored by my emplyer, Omicron Ceti AB. http://www.omicron.se
-
-It is currently capable of booting a linux bzImage from flash on
-the AMD SC520 CDP platform.
-
-It was originally based on PPCBoot taken from the CVS October 28 2002.
-
-To compile:
-
-1) Unpack the source tree, either from the complete tarball or
- from the virgin snapshot + the patch
-
-2) Configure the source
- $ make sc520_cdp_comfig
- $ make
-
-To use this code on the CDP:
-1) Make a suitable kernel, I used 2.4.19 with the mtd-support updated
- from the MTD CVS and a patch to allow root=/dev/mtdblock1 which I
- included at the end of this file.
- The following options in the MTD section might be useful:
-
- CONFIG_MTD_PHYSMAP=y
- CONFIG_MTD_PHYSMAP_START=38100000
- CONFIG_MTD_PHYSMAP_LEN=7a0000
- CONFIG_MTD_PHYSMAP_BUSWIDTH=2
-
-
-2) Program it in to the CDP flashbank with remon
- u-boot.bin should be programmed att offset 0x7e000 and the kernel at
- offset 0. If you want to use a jffs2 root file system (not included here),
- it should be programmed to offset 0x100000.
-
- remon> z
- remon> yi
- remon> ns u-boot.bin 7e0000
- remon> ns bzImage 0
- remon> ns image.jffs2 100000
-
-3) Connect a terminal to the 25pin serial port at 9600bps, and start the CDP.
-
- remon> z
- remon> g
-
-4) U-Boot should output some message and a prompt on the terminal, to
- start the kernel issue the following command:
-
- BOOT> bootm
-
-5) The kernel should boot, and mount the root filesystem if present.
-
-We hope you find this stuff useful
-Daniel Engström, Omicron Ceti AB, daniel@omicron.se
-
-
---- linux-2.4.19-orig/init/do_mounts.c Sat Aug 3 02:39:46 2002
-+++ linux-2.4.19/init/do_mounts.c Mon Sep 23 16:21:33 2002
-@@ -224,6 +224,14 @@
- { "ftlc", 0x2c10 },
- { "ftld", 0x2c18 },
- { "mtdblock", 0x1f00 },
-+ { "mtdblock0", 0x1f00 },
-+ { "mtdblock1", 0x1f01 },
-+ { "mtdblock2", 0x1f02 },
-+ { "mtdblock3", 0x1f03 },
-+ { "mtdblock4", 0x1f04 },
-+ { "mtdblock5", 0x1f05 },
-+ { "mtdblock6", 0x1f06 },
-+ { "mtdblock7", 0x1f07 },
- { NULL, 0 }
- };
-
--------------------
+++ /dev/null
-i386 port missing features:
-* i386 cleaness (wbinvld is 486+ ... )
-* Pentium TSC timer/udelay
-* setup the BIOS data area and BIOS equipment word to reflect machine config.
-* Make reset work (from Linux and from the boot prompt)
-* DMA, FDC, RTC, KBC initialization
-* split of part of arch/i386/cpu/interrupt.c to cpu/i385/entry.c?
-* re-entry of protected mode from real mode, should be added to realmode_switch.S
- (and used by INT 10h and INT 16h handlers for console I/O during early
- linux boot...)
-* missing functions in arch/i386/lib and arch/i386/cpu
-* speaker beep interface
-
-
-SC520 missing features:
-* Watchdog
-* SC520 timer/udelay
-* SC520 3rd PIC
-* SC520 ICE serial
-* SC520 MMCR reset
-
-SC520 CDP board support missing features:
-* environment in sram
-
-SC520 CDP board support bugs:
-* SPI EEPROM support does not work
-* 0x680 LEDS dos not work for me
-* is it possible to make both the internal serial ports and the
- ports on the sio work at the same time?