This commit is based on this linux commit:
commit 2fa36399e63c911134f28b6878aada9b395c4209
Author: Kelvin Cheung <keguang.zhang@gmail.com>
Date: Wed Jun 20 20:05:32 2012 +0100
MIPS: Add CPU support for Loongson1B
Loongson 1B is a 32-bit SoC designed by Institute of Computing Technology
(ICT) and the Chinese Academy of Sciences (CAS), which implements the
MIPS32 release 2 instruction set.
[ralf@linux-mips.org: But which is not strictly a MIPS32 compliant device
which also is why it identifies itself with the Legacy Vendor ID in the
PrID register. When applying the patch I shoveled some code around to
keep things in alphabetical order and avoid forward declarations.]
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Loongson (simplified Chinese: 龙芯; pinyin: Lóngxīn; literally: "Dragon Core")
is a family of general-purpose MIPS CPUs developed at the Institute of Computing
Technology (ICT), Chinese Academy of Sciences (CAS) in the People's Republic of China.
See http://en.wikipedia.org/wiki/Loongson for details.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
without "#ifndef __ASSEMBLY__ #endif", an assembly file
including this file will break compilation.
Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
GXemul is another MIPS emulator with Malta board support.
As opposed to qemu GXemul supports only fixed GT64120
YAMON-compatible PCI mapping.
As now barebox uses YAMON-style mapping we can
use GXemul for barebox run.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There are some reasons for using YAMON-style memory map:
* we can run Linux kernel from barebox;
* we can use GXemul for running barebox.
YAMON-style GT64120 memory map make move UART to the new position.
The files gt64120.h and mach-gt64120.h are imported from Linux.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On MIPS Technologies boards 0x1fc00010 address
is reserved for BoardID. The hardware or emulator
intercepts accesses to this address and we can't use
this address for storing code.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On 8 February 2013 MIPS Technologies was acquired
by Imagination Technologies. Now the http://www.mips.com/ site
is redirected to http://www.imgtec.com/, the Malta development
board page is unreachable.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Fixes:
arch/mips/mach-bcm47xx/include/mach/debug_ll.h: In function 'PUTC_LL':
arch/mips/mach-bcm47xx/include/mach/debug_ll.h:33: warning: passing argument 1 of '__raw_readb' makes pointer from integer without a cast
arch/mips/mach-bcm47xx/include/mach/debug_ll.h:34: warning: passing argument 2 of '__raw_writeb' makes pointer from integer without a cast
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Convert to static inline functions and use lower case letters for function
names. Also, include mach/debug_ll.h when an architecture provides support
for debug_ll, not only when it's actually enabled. This allows architecures
to put some UART initialization code into mach/debug_ll.h which is compiled
out when debug_ll is disabled.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With multiboard support the compiletime generated BOARDINFO string
gets more and more meaningless. This removes it from Kconfig and
replaces it with a variable that can be set at boardlevel.
Also many boards have a standard setting for the hostname in the
environment. This patch also moves the standard to C code by calling
barebox_set_hostname().
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
nmon is a tiny monitor (<1200 bytes) program
for the MIPS processors.
It can operate with NO working RAM at all!
It uses only the processor registers and NS16550-compatible
UART port for operation, so it can be used for a memory
controller setup code debugging.
With no changes nmon should work on different MIPS
processors as it uses only common MIPS-I instructions.
nmon is inspired by mmon, MIPS VR4300 Mini-monitor.
mmon is copyrighted 1996, 2003 by Eric Smith.
Also Alexander Voropay must be noted for his work
on qemu & YAMON mmon adaptations made in 2006 and 2007.
See http://www.brouhaha.com/~eric/software/mmon/
for mmon details.
The mmon's features missed in nmon:
* batch memory dumps;
* byte and 16-bit half-words dumps and stores;
* fill memory;
* load S-records (this function make sense only
if RAM works properly).
nmon has only 4 commands:
q - quit to barebox
d <addr> - read 32-bit word from <addr> address
w <addr> <val> - write 32-bit word <val> to <addr>
g <addr> - jump to <addr>
Addresses and data must be given in hexadecimal.
Everything (including hex digits 'a'..'f') must
be in lower case.
EXAMPLE: change value of word with address 0xa0000000
nmon> d a0000000
00000000
nmon> w a0000000 12345678
nmon> d a0000000
12345678
nmon>
There is no error checking of any kind. If you
give an invalid address you will probably get
an exception which will hang the board and you
will have to press the reset button.
You can interrupt current command (e.g. you have
made error in input <addr> value) by pressing
the <ESC> key.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
if E0 flag is not set, sdram is defenetly not configured.
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The mips_barebox_10h macro inserts at offset 0x10
of the barebox image the string 'barebox ' followed
by compile time version mark.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Remove Shinya Kuribayashi's copyright on the ADR macro
in start-pbl.S as we don't define this macro in
this file or even use it where.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The generated label usage make possible
to use the ADR macro many times.
If we don't use a generated label and we try
to use the ADR macro second time then we get
Error: symbol `_pc' is already defined
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Antony Pavlov
Antony Pavlov
Alexander Shiyan
Du Huanpeng
Dmitry Smagin
Jean-Christophe PLAGNIOL-VILLARD
Oleksij Rempel