upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.1 KiB
74 lines
2.1 KiB
This is my attempt to port PPCBoot to the i386 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
|
|
ppcboot.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 ppcboot.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) PPCboot 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 }
|
|
};
|
|
|
|
|