[RFC PATCH 0/2] impedance-matcher generic improvements
Jason Cooper
jason at lakedaemon.net
Mon Jul 29 17:23:59 EDT 2013
Daniel,
Here's a patch (plus a cscope target) to attempt to make the impedance-matcher
generic code. Hopefully I'll have time to test tomorrow. All I can say atm is
that it compiles cleanly with and without specifying an appended zImage.
Warning: the code in string.c is little better than psuedo-code, maybe not even
that good. I'm posting this so if anyone else is inclined to work on this,
there's no need to duplicate effort. And, I have a firm belief in the
motivating effects af posting half-assed code. ;-)
Basic idea is to replace a device's stock kernel with this impedance-matcher.
Load the kernel and/or the devicetree blob to desired addresses. Add
'loadaddrs=0xXXXXXXXX,0xYYYYYYYY' to the kernel's command line. Or, if you are
appending, 'loadaddrs=appended,0xYYYYYYYY'. First address is the location of
the kernel, second is the location of the dtb.
Then, for u-boot, 'bootm 0xZZZZZZZZ' where 0xZZZZZZZZ is the address of the
impedance-matcher.
For those interested, a public branch can be found at (prone to rebase!):
git://git.infradead.org/users/jcooper/impedance-matcher.git master
Thomas,
You weren't in the original Cc: of this thread, I added you because this may
help with your shifting register base address issues.
thx,
Jason.
Jason Cooper (2):
add cscope Makefile target
WIP: Get kernel and dtb addresses from command line
.gitignore | 1 +
Makefile | 31 ++++++++++------------
atags.h | 6 +++++
board.c | 88 --------------------------------------------------------------
board.h | 13 ----------
led.c | 54 --------------------------------------
led.h | 6 -----
main.c | 52 +++++++++++++++++++++----------------
string.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
string.h | 8 ++++++
10 files changed, 141 insertions(+), 201 deletions(-)
delete mode 100644 board.c
delete mode 100644 board.h
delete mode 100644 led.c
delete mode 100644 led.h
create mode 100644 string.c
create mode 100644 string.h
--
1.8.3.2
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