OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
linux/Documentation/cris/README

196 lines
6.2 KiB
Plaintext
Raw Normal View History

CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
Linux on the CRIS architecture
==============================
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
This is a port of Linux to Axis Communications ETRAX 100LX,
ETRAX FS and ARTPEC-3 embedded network CPUs.
For more information about CRIS and ETRAX please see further below.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
In order to compile this you need a version of gcc with support for the
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
ETRAX chip family. Please see this link for more information on how to
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
download the compiler and other tools useful when building and booting
software for the ETRAX platform:
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
http://developer.axis.com/wiki/doku.php?id=axis:install-howto-2_20
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
What is CRIS ?
--------------
CRIS is an acronym for 'Code Reduced Instruction Set'. It is the CPU
architecture in Axis Communication AB's range of embedded network CPU's,
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
called ETRAX.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
The ETRAX 100LX chip
--------------------
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
For reference, please see the following link:
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
http://www.axis.com/products/dev_etrax_100lx/index.htm
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
The ETRAX 100LX is a 100 MIPS processor with 8kB cache, MMU, and a very broad
range of built-in interfaces, all with modern scatter/gather DMA.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
Memory interfaces:
* SRAM
* NOR-flash/ROM
* EDO or page-mode DRAM
* SDRAM
I/O interfaces:
* one 10/100 Mbit/s ethernet controller
* four serial-ports (up to 6 Mbit/s)
* two synchronous serial-ports for multimedia codec's etc.
* USB host controller and USB slave
* ATA
* SCSI
* two parallel-ports
* two generic 8-bit ports
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
(not all interfaces are available at the same time due to chip pin
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
multiplexing)
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
ETRAX 100LX is CRISv10 architecture.
The ETRAX FS and ARTPEC-3 chips
-------------------------------
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
The ETRAX FS is a 200MHz 32-bit RISC processor with on-chip 16kB
I-cache and 16kB D-cache and with a wide range of device interfaces
including multiple high speed serial ports and an integrated USB 1.1 PHY.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
CRIS: Update documentation Change some broken links, remove obsolete information and add information about the CRISv32 architecture. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2011-04-12 12:05:19 +02:00
The ARTPEC-3 is a variant of the ETRAX FS with additional IO-units
used by the Axis Communications network cameras.
See below link for more information:
http://www.axis.com/products/dev_etrax_fs/index.htm
ETRAX FS and ARTPEC-3 are both CRISv32 architectures.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
Bootlog
-------
Just as an example, this is the debug-output from a boot of Linux 2.4 on
a board with ETRAX 100LX. The displayed BogoMIPS value is 5 times too small :)
At the end you see some user-mode programs booting like telnet and ftp daemons.
Linux version 2.4.1 (bjornw@godzilla.axis.se) (gcc version 2.96 20000427 (experimental)) #207 Wed Feb 21 15:48:15 CET 2001
ROM fs in RAM, size 1376256 bytes
Setting up paging and the MMU.
On node 0 totalpages: 2048
zone(0): 2048 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Linux/CRIS port on ETRAX 100LX (c) 2001 Axis Communications AB
Kernel command line:
Calibrating delay loop... 19.91 BogoMIPS
Memory: 13872k/16384k available (587k kernel code, 2512k reserved, 44k data, 24k init)
kmem_create: Forcing size word alignment - vm_area_struct
kmem_create: Forcing size word alignment - filp
Dentry-cache hash table entries: 2048 (order: 1, 16384 bytes)
Buffer-cache hash table entries: 2048 (order: 0, 8192 bytes)
Page-cache hash table entries: 2048 (order: 0, 8192 bytes)
kmem_create: Forcing size word alignment - kiobuf
kmem_create: Forcing size word alignment - bdev_cache
Inode-cache hash table entries: 1024 (order: 0, 8192 bytes)
kmem_create: Forcing size word alignment - inode_cache
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd v1.8
kmem_create: Forcing size word alignment - file lock cache
kmem_create: Forcing size word alignment - blkdev_requests
block: queued sectors max/low 9109kB/3036kB, 64 slots per queue
ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000 Axis Communications AB
eth0 initialized
eth0: changed MAC to 00:40:8C:CD:00:00
ETRAX 100LX serial-driver $Revision: 1.7 $, (c) 2000 Axis Communications AB
ttyS0 at 0xb0000060 is a builtin UART with DMA
ttyS1 at 0xb0000068 is a builtin UART with DMA
ttyS2 at 0xb0000070 is a builtin UART with DMA
ttyS3 at 0xb0000078 is a builtin UART with DMA
Axis flash mapping: 200000 at 50000000
Axis flash: Found 1 x16 CFI device at 0x0 in 16 bit mode
Amd/Fujitsu Extended Query Table v1.0 at 0x0040
Axis flash: JEDEC Device ID is 0xC4. Assuming broken CFI table.
Axis flash: Swapping erase regions for broken CFI table.
number of CFI chips: 1
Using default partition table
I2C driver v2.2, (c) 1999-2001 Axis Communications AB
ETRAX 100LX GPIO driver v2.1, (c) 2001 Axis Communications AB
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
kmem_create: Forcing size word alignment - ip_dst_cache
IP: routing cache hash table of 1024 buckets, 8Kbytes
TCP: Hash tables configured (established 2048 bind 2048)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (cramfs filesystem) readonly.
Init starts up...
Mounted none on /proc ok.
Setting up eth0 with ip 10.13.9.116 and mac 00:40:8c:18:04:60
eth0: changed MAC to 00:40:8C:18:04:60
Setting up lo with ip 127.0.0.1
Default gateway is 10.13.9.1
Hostname is bbox1
Telnetd starting, using port 23.
using /bin/sash as shell.
sftpd[15]: sftpd $Revision: 1.7 $ starting up
And here is how some /proc entries look:
17# cd /proc
17# cat cpuinfo
cpu : CRIS
cpu revision : 10
cpu model : ETRAX 100LX
cache size : 8 kB
fpu : no
mmu : yes
ethernet : 10/100 Mbps
token ring : no
scsi : yes
ata : yes
usb : yes
bogomips : 99.84
17# cat meminfo
total: used: free: shared: buffers: cached:
Mem: 7028736 925696 6103040 114688 0 229376
Swap: 0 0 0
MemTotal: 6864 kB
MemFree: 5960 kB
MemShared: 112 kB
Buffers: 0 kB
Cached: 224 kB
Active: 224 kB
Inact_dirty: 0 kB
Inact_clean: 0 kB
Inact_target: 0 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 6864 kB
LowFree: 5960 kB
SwapTotal: 0 kB
SwapFree: 0 kB
17# ls -l /bin
-rwxr-xr-x 1 342 100 10356 Jan 01 00:00 ifconfig
-rwxr-xr-x 1 342 100 17548 Jan 01 00:00 init
-rwxr-xr-x 1 342 100 9488 Jan 01 00:00 route
-rwxr-xr-x 1 342 100 46036 Jan 01 00:00 sftpd
-rwxr-xr-x 1 342 100 48104 Jan 01 00:00 sh
-rwxr-xr-x 1 342 100 16252 Jan 01 00:00 telnetd