c_cache

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

The cache Command
cache

The cache command displays the contents of the caches.

Format

The format for the cache command is:

cache  [-idvl][set [adr]]

where:

-i	is a flag indicating that the Icache should be displayed.

-d	is a flag indicating that the Dcache should be displayed (default).

-v	is a flag indicating that only valid entries should be displayed.

-l	is a flag indicating that only locked entries should be displayed
	(400x cores only).

set	is the set number, eg. 0 or 1 for set0 and set1 respectively 
	(default is set0).

adr	is the address of the first cache entry to be displayed.

By default, the cache command displays the first 8 lines of set0 of the
Dcache.

Functional Description

The cache command displays the contents of the caches. If the user does 
not specify the 
starting address adr or set number, display starts at address zero.
Note that, because PMON generally executes from cache, the values
displayed by this command will change even though no user application
has been executed. With IMON this restriction is avoided.  

If the user specifies the -i option, the contents of the Icache
will be displayed, otherwise the Dcache will be displayed.
If set is specified, the command will display the contents of the
specified cache set.
If adr is specified, the display will start at that address.

Examples illustrating the use of the cache command follow.

PMON cache			Display Dcache set0 starting at 
                                address zero.

PMON cache 1 80020000		Display Dcache set 1 starting at
				address 0x80020000.

PMON cache -i 0 80020000	Display Icache set 0 starting at
				address 0x80020000.

Files
The cache command is located in lib/c400x.c
or lib/c401x.c

See Also
flush command