[people/ms/u-boot.git] / doc / README-i386

This is my attempt to port U-Boot 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
   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
Commit	Line	Data
3bac3513	1	This is my attempt to port U-Boot to the i386 platform. This
2262cfee WD	2	work was sponsored by my emplyer, Omicron Ceti AB. http://www.omicron.se
	3
	4	It is currently capable of booting a linux bzImage from flash on
	5	the AMD SC520 CDP platform.
	6
8bde7f77	7	It was originally based on PPCBoot taken from the CVS October 28 2002.
2262cfee WD	8
	9	To compile:
	10
	11	1) Unpack the source tree, either from the complete tarball or
	12	from the virgin snapshot + the patch
8bde7f77	13
2262cfee WD	14	2) Configure the source
	15	$ make sc520_cdp_comfig
	16	$ make
8bde7f77	17
2262cfee WD	18	To use this code on the CDP:
	19	1) Make a suitable kernel, I used 2.4.19 with the mtd-support updated
	20	from the MTD CVS and a patch to allow root=/dev/mtdblock1 which I
8bde7f77	21	included at the end of this file.
2262cfee	22	The following options in the MTD section might be useful:
8bde7f77	23
2262cfee WD	24	CONFIG_MTD_PHYSMAP=y
	25	CONFIG_MTD_PHYSMAP_START=38100000
	26	CONFIG_MTD_PHYSMAP_LEN=7a0000
	27	CONFIG_MTD_PHYSMAP_BUSWIDTH=2
	28
	29
	30	2) Program it in to the CDP flashbank with remon
3bac3513	31	u-boot.bin should be programmed att offset 0x7e000 and the kernel at
8bde7f77	32	offset 0. If you want to use a jffs2 root file system (not included here),
2262cfee	33	it should be programmed to offset 0x100000.
8bde7f77	34
2262cfee WD	35	remon> z
2262cfee WD	36	remon> yi
3bac3513	37	remon> ns u-boot.bin 7e0000
2262cfee WD	38	remon> ns bzImage 0
	39	remon> ns image.jffs2 100000
	40
	41	3) Connect a terminal to the 25pin serial port at 9600bps, and start the CDP.
8bde7f77	42
2262cfee WD	43	remon> z
	44	remon> g
	45
3bac3513	46	4) U-Boot should output some message and a prompt on the terminal, to
2262cfee	47	start the kernel issue the following command:
8bde7f77	48
2262cfee	49	BOOT> bootm
8bde7f77	50
2262cfee WD	51	5) The kernel should boot, and mount the root filesystem if present.
	52
	53	We hope you find this stuff useful
	54