Commit Graph

160 Commits

Author SHA1 Message Date
Antonio Borneo
67cb50e26a target/arm: rename CamelCase symbols
No major cross dependencies, mostly changes internal to each
file/function.

Change-Id: I3f0879f0f33c6badc36a0dc60229323978a7e280
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6338
Tested-by: jenkins
Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
Reviewed-by: Xiang W <wxjstz@126.com>
2021-07-20 14:52:25 +01:00
Rene Kita
6db49eb885 build: remove warnings with gcc 11
This removes some warnings which prevent a successful build with -Werror
which is enabled by default. I'm using gcc 11, so maybe others are not
getting this warnings yet.

In src/flash/nor/numicro.c the debug messages were misleadingly indented.
In src/target/arm920t.c the array size where smaller than expected from
the receiving function.

Change-Id: I66f5c6a63beb9f9416e73b726299297476c884d8
Signed-off-by: Rene Kita <git@rkta.de>
Reviewed-on: http://openocd.zylin.com/6104
Reviewed-by: Jonathan McDowell <noodles-openocd@earth.li>
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
2021-03-19 22:00:34 +00:00
Antonio Borneo
cda7bc9a4c target/arm920t: remove command 'arm920t cp15i' deprecated in v0.4.0
The command 'arm920t cp15i' was marked as deprecated in release
v0.4.0, almost 11 years ago.
We can reasonably expect that in these years any user of OpenOCD
has already migrated to v0.4.0 or to some newer release, thus has
already updated any local/personal script.
There is no run-time warning about the deprecation, but it is
reported in the help and in the documentation.

Drop the command already deprecated in v0.4.0.

Change-Id: I755c4283e13e125558fcd73b15fe20498eae95ca
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6083
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
2021-03-19 21:54:41 +00:00
Antonio Borneo
580b8f5da0 target: fix memory leaks on targets based on arm9tdmi
Similarly to the fix for arm926ejs (also base on arm9tdmi), fix
the other targets based on arm9tdmi.
The fix for arm926ejs is tested on SPEAr320 target.

This fix is proposed separately because is not tested on a correct
target device, but tested on SPEAr320 by hacking the target type
and pretending it is the correct one, e.g.:
	sed -i s/arm926ejs/arm920t/ tcl/target/spear3xx.cfg

The memory leaks detected and fixed are:
- arm register cache;
- EmbeddedICE register cache;
- arm_jtag_reset_callback internal data;
- struct <target_type>_common.

Change-Id: I565f9a5bf144a9df78474434d86a64127ef0fbe5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5699
Tested-by: jenkins
2020-07-26 20:12:21 +01:00
Tomas Vanek
4e981bc27c target/arm920t: fix clang static analyzer warning
Change-Id: I570dfb8b20a3f187f1fe660343cf0b75691e2c30
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/5375
Tested-by: jenkins
Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
2020-03-07 15:29:44 +00:00
Antonio Borneo
6cb5ba6f11 helper/command: change prototype of command_print/command_print_sameline
To prepare for handling TCL return values consistently, all calls
to command_print/command_print_sameline should switch to CMD as
first parameter.

Change prototype of command_print() and command_print_sameline()
to pass CMD instead of CMD_CTX.
Since the first parameter is currently not used, the change can be
done though scripts without manual coding.
This patch is created using the command:
	sed -i PATTERN $(find src/ doc/ -type f)
with all the following patters:
	's/\(command_print(cmd\)->ctx,/\1,/'
	's/\(command_print(CMD\)_CTX,/\1,/'
	's/\(command_print(struct command_\)context \*context,/\1invocation *cmd,/'
	's/\(command_print_sameline(cmd\)->ctx,/\1,/'
	's/\(command_print_sameline(CMD\)_CTX,/\1,/'
	's/\(command_print_sameline(struct command_\)context \*context,/\1invocation *cmd,/'

This change is inspired by http://openocd.zylin.com/1815 from Paul
Fertser but is now done through scripting.

Change-Id: I3386d8f96cdc477e7a2308dd18269de3bed04385
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/5081
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
2019-05-14 19:37:11 +01:00
Paul Fertser
54ecec2e85 target/armv4_5_cache: change prototype of armv4_5_handle_cache_info_command()
To prepare for handling TCL return values consistently, all calls
to command_print/command_print_sameline should be ready to switch
to CMD as first parameter.

Change prototype of armv4_5_handle_cache_info_command() to pass
CMD instead of CMD_CTX.

This change was part of http://openocd.zylin.com/1815 from Paul
Fertser and has been extracted and rebased to simplify the review.

Change-Id: Ib6ab3ec2fc6504c2a0635b654697a4b6e12a3750
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5068
Tested-by: jenkins
2019-05-14 19:35:41 +01:00
Paul Fertser
fce3b698fb target/arm920t: change prototype of arm920t_verify_pointer()
To prepare for handling TCL return values consistently, all calls
to command_print/command_print_sameline should be ready to switch
to CMD as first parameter.

Change prototype of arm920t_verify_pointer() to pass CMD instead
of CMD_CTX.

This change was part of http://openocd.zylin.com/1815 from Paul
Fertser and has been extracted and rebased to simplify the review.

Change-Id: I9a603d7c032df91b3913aadb242de89dbed0358e
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5056
Tested-by: jenkins
2019-05-14 19:34:15 +01:00
Marc Schink
fc8885a9c3 target/arm920t: Use 'bool' data type
Change-Id: I5f2c95d9a4bdb14cc31d72eb026f58710fb07db5
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4959
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
2019-03-06 16:13:55 +00:00
Antonio Borneo
5c941edc7b target/arm: add support for multi-architecture gdb
GDB can be built for multi-architecture through the command
	./configure --enable-targets=all && make
Such multi-architecture GDB requires the target's architecture to
be selected either manually by the user through the GDB command
"set architecture" or automatically by the target description sent
by the remote target (i.e. OpenOCD).

Commit e65acd889c ("gdb_server: add
support for architecture element") already provides the required
infrastructure to support multi-architecture gdb.

arm-none-eabi-gdb 8.2 uses "arm" as default architecture, but also
supports the following values: "arm_any", "armv2", "armv2a",
"armv3", "armv3m", "armv4", "armv4t", "armv5", "armv5t", "armv5te",
"armv5tej", "armv6", "armv6k", "armv6kz", "armv6-m", "armv6s-m",
"armv6t2", "armv7", "armv7e-m", "armv8-a", "armv8-m.base",
"armv8-m.main", "armv8-r", "ep9312", "iwmmxt", "iwmmxt2", "xscale".
These values can be displayed on arm gdb prompt by typing
"set architecture " followed by a TAB for autocompletion.

Set the gdb architecture value for all arm targets to "arm".

Change-Id: I176cb89878606e1febd546ce26543b3e7849500a
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4754
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2019-01-08 09:59:42 +00:00
Dongxue Zhang
47b8cf8420 target: Add 64-bit target address support
Define a target_addr_t type to support 32-bit and 64-bit addresses at
the same time. Also define matching TARGET_PRI*ADDR format macros as
well as a convenient TARGET_ADDR_FMT.

In targets that are 32-bit (avr32, nds32, arm7/9/11, fm4, xmc1000)
be least invasive by leaving the formatting unchanged apart from the
type;
for generic code adopt TARGET_ADDR_FMT as unified address format.

Don't silently change gdb formatting here, leave that to later.

Add COMMAND_PARSE_ADDRESS() macro to abstract the address type.
Implement it using its own parse_target_addr() function, in the hopes
of catching pointer type mismatches better.

Add '--disable-target64' configure option to revert to previous 32-bit
target address behavior.

Change-Id: I2e91d205862ceb14f94b3e72a7e99ee0373a85d5
Signed-off-by: Dongxue Zhang <elta.era@gmail.com>
Signed-off-by: David Ung <david.ung.42@gmail.com>
[AF: Default to enabling (Paul Fertser), rename macros, simplify]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
2017-02-10 13:50:17 +01:00
Andreas Färber
f19ac83152 Fix usage of timeval_ms()
First, fix the timeval_ms() implementation to not have K&R but ANSI
argument semantics by adding a missing void.

timeval_ms() returns an int64_t, not uint64_t or long long. Consistently
use int64_t for variables and PRI*64 as format string.

While at it, change a few related variables to bool for clarity.

Note that timeval_ms() may return a negative error code, but not a
single caller checks for that.

Change-Id: I27cf83e75b3e9a8913f6c43e98a281bea77aac13
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3499
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
2016-07-19 10:45:16 +01:00
Marc Schink
d0e763ac7e Remove FSF address from GPL notices
Also make GPL notices consistent according to:
https://www.gnu.org/licenses/gpl-howto.html

Change-Id: I84c9df40a774958a7ed91460c5d931cfab9f45ba
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/3488
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2016-05-24 22:30:01 +01:00
Andreas Fritiofson
dc574aa1da target/arm: Remove usage of struct arm_jtag in ARMv7 targets
The Cortex-A and Cortex-M keeps an arm_jtag struct around just to be
able to pass a pointer to it to one common JTAG function which anyway
only uses the TAP field.

Refactor the function to take a TAP directly, remove the legacy struct
from cortex instances and store the TAP pointer only in the DAP.

Cortex-M makes a call to arm_jtag_setup_connection() with the struct
but the function does nothing useful for a Cortex-M target so remove
the call.

Change-Id: I3b33709ef55372ef14522ed4337e9f2e817ae3ab
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3142
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
2015-12-29 20:27:01 +00:00
Paul Fertser
1137eaedaf arm920t: fix write memory operations with caches enabled
Commit ff5ec942d8 made this target
always use generic arm7_9 memory write routines for software
breakpoints which resulted in inability to debug and single-step
sources in Gdb when icache is active as generic routine doesn't
invalidate it. This should fix it (and is real-life tested against
Samsung S3C2442). I expect other arm7-9 targets to be affected as
well.

Change-Id: Id7980e370ae4db47ac6b1490321d81ffe85711c0
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1817
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2014-01-24 12:48:43 +00:00
Andreas Fritiofson
ff5ec942d8 arm7_9: Avoid infinite loops in bulk write dispatching
Add a mandatory field in struct arm7_9_common for regular, non-optimized
memory writes. Together with the existing bulk_memory_write field, this
allows variants to select any combination of implementations for regular
and bulk writes, without risking infinite loops from accidentally using
bulk writes for implementing bulk writes.

ARM 7/9 targets may now select arm7_9_memory_write_opt as their
target.write_memory implementation, which will dispatch to
arm7_9_common.bulk_write_memory if possible, or fallback to
arm7_9_common.write_memory otherwise.

To avoid loops, bulk write implementations mustn't call any other
functions than arm7_9_write_memory_no_opt() to write memory; it will
unconditionally call arm7_9_common.write_memory. If they fail, they should
simply return error to allow the caller to fallback to regular writes.

Tested on a regular ARM7TDMI only.

Change-Id: Iae42a6e093e2df68c4823c927d757ae8f42ef388
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1685
Tested-by: jenkins
Reviewed-by: Sergey A. Borshch <sb-sf@users.sourceforge.net>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2013-10-15 20:41:08 +00:00
Andreas Fritiofson
5c2f920cc7 [RFC] target: Move bulk_write_memory to arm7_9
The only remaining user is arm7_9 so remove it from the target API and add
it to struct arm7_9_common to support all its variants with minimal
changes. Many of the variants are likely not correct in the cache/mmu
handling when the bulk write is triggered. This patch does nothing to
change that, except for arm946e, where it was easier to do what might be
the right thing.

Change-Id: Ie73ac07507ff0936fefdb90760046cc8810ed182
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1220
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2013-09-13 19:33:28 +00:00
Spencer Oliver
08d4411b59 update files to correct FSF address
Change-Id: I429f7fd51f77b0e7c86d7a7f110ca31afd76c173
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1426
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
2013-06-05 19:52:42 +00:00
Spencer Oliver
374127301e build: cleanup src/target directory
Change-Id: Ia055b6d2b5f6449a38afd0539a8c66e7d7e0c059
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/430
Tested-by: jenkins
2012-02-06 11:00:36 +00:00
Spencer Oliver
3a550e5b5f cleanup: rename armv4_5 to arm for readability
Nothing more than a name change, just to make reading
the code a bit simpler.

Change-Id: I73a16b7302b48ce07d9688162955aae71d11eb45
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/390
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
2012-01-23 11:38:26 +00:00
Spencer Oliver
0c2f8b6eb8 cmd: add missing usage vars
we should have caught them all - hopefully.

Change-Id: I35435317fccaf5ad0216244d69f76db6857bb582
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/381
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
2012-01-18 21:45:02 +00:00
Mathias K
16b6b5e7a8 Change return value on error.
On wrong parameters a error is signalized to the calling function.

Change-Id: I484443fdb39938e20382edc9246d5ec546a5c960
Signed-off-by: Mathias K <kesmtp@freenet.de>
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Reviewed-on: http://openocd.zylin.com/282
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
2012-01-04 17:56:46 +00:00
Freddie Chopin
f6315d5e5b Fix "unused variable" warnings (errors) detected with GCC 4.7.0 - trivial fixes 2011-06-04 09:35:13 +02:00
Øyvind Harboe
2615bf4398 types: write memory now uses const
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2011-04-01 08:59:07 +02:00
Øyvind Harboe
f941192723 arm: add missing error reporting
when an unknown core mode is read from the target,
report error. Can be communication failure.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-08-11 10:58:49 +02:00
Øyvind Harboe
e0525cd182 arm_jtag_scann error propagation fixes
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-07-20 08:24:53 +02:00
Øyvind Harboe
4333840ee3 arm: error propagation of arm_jtag_set_instr
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-07-19 22:13:49 +02:00
Øyvind Harboe
44ef0327dd debug: debug entry error propagation
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-07-19 22:13:49 +02:00
Øyvind Harboe
6a237c23c1 arm: add error propagation for enable/disable mmu caches
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-07-19 22:13:48 +02:00
Øyvind Harboe
70fee9207b arm: add error propagation to generic get_ttb fn
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-07-19 22:13:48 +02:00
Øyvind Harboe
97197c98eb arm920t: -Wshadow warning fixes
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-06-15 23:18:44 +02:00
Antonio Borneo
bac52fbac8 TARGET: removed unused parameters
Parameters "domain" and "ap" of function armv4_5_mmu_translate_va()
are not used.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-06-12 16:41:46 +02:00
Antonio Borneo
9e62f86f24 TARGET: removed unsed parameter
Parameter "type" of function armv4_5_mmu_translate_va()
is now not used.
Remove the parameter and the "enum" listing its values.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-06-12 12:08:12 +02:00
Antonio Borneo
ce58ab9a4e TARGET: fix handling return code of MMU translation
Function armv4_5_mmu_translate_va() now properly signals
errors in the return value.
Remove former error handling by setting variable "type" to
value "-1".

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-06-12 12:08:06 +02:00
Antonio Borneo
dcc7de4f9b TARGET/ARM920T: fix return value
Function arm920t_write_memory() default return value
should be ERROR_OK.
All cases of local errors are handled immediately and
not further propagated.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-06-12 12:08:00 +02:00
Antonio Borneo
20724e3325 TARGET/ARM920T: fix compile warning
Commit 0538081246
introduces a compile time warning:
arm920t.c: In function ‘arm920t_write_memory’:
arm920t.c:567: warning: ‘retval’ may be used uninitialized in this function

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-06-12 12:07:53 +02:00
Øyvind Harboe
0538081246 arm mmu: error propagation added for address translation
The return value for MMU translation was a mess, either
error or value.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-06-11 15:53:23 +02:00
Antonio Borneo
8ffdefcc59 ARM920T: review scope of functions
Add "static" qualifier to private functions.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-04-10 17:01:06 +08:00
Øyvind Harboe
b7811b7679 arm breakpoints: amended fix comment
the handling of caches, should be moved into the breakpoint
specific callbacks rather than being plonked into generic
memory write fn's.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-03-21 19:21:15 +01:00
Øyvind Harboe
7f6bab0c4c jtag: retire jtag_get/set_end_state()
Voila! This get rids of mysteries about what what
state the TAP is in.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-03-19 08:31:44 +01:00
Øyvind Harboe
ec108ff59e jtag: retire one instance of jtag_get_end_state() usage
Less global variables....

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-03-18 12:08:11 +01:00
Øyvind Harboe
36df240cea jtag: cut down on usage of unintended modification of global end state
jtag_get/set_end_state() is now deprecated.

There were lots of places in the code where the end state was
unintentionally modified.

The big Q is whether there were any places where the intention
was to modify the end state. 0.5 is a long way off, so we'll
get a fair amount of testing.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-03-18 08:43:19 +01:00
Øyvind Harboe
e018c7c1d2 jtag: retire tap field
jtag_add_dr/ir_scan() now takes the tap as the first
argument, rather than for each of the fields passed
in.

The code never exercised the path where there was
more than one tap being scanned, who knows if it even
worked.

This simplifies the implementation and reduces clutter
in the calling code.

use jtag_add_ir/dr_plain_scan() for more fancy situations.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-03-08 08:12:25 +01:00
David Brownell
1aac72d243 ARM: keep a handle to the PC
Keep a handle to the PC in "struct arm", and use it.
This register is used a fair amount, so this is a net
minor code shrink (other than some line length fixes),
but mostly it's to make things more readable.

For XScale, fix a dodgy sequence while stepping.  It
was initializing a variable to a non-NULL value, then
updating it to handle the step-over-active-breakpoint
case, and then later testing for non-NULL to see if
it should reverse that step-over-active logic.  It
should have done like ARM7/ARM9 does: init to NULL.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
2010-02-21 14:34:33 -08:00
David Brownell
bb4cb7935e arm920t line length cleanup
The recent patch to fixbreakpoints and dcache handling added
a bunch of overlong lines (80+ chars) ... shrink them, and do
the same to a few lines which were already overlong.

Also add a few FIXME comments to nudge (a) replacement of some
magic numbers with opcode macros, which will be much better at
showing what's actually going on, and (b) correct return codes.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
2010-02-20 20:47:38 -08:00
Marc Pignat
3f30563c88 atm920t : fix breakpoints and data cache handling
Breakpoints did not work because the data cache was not flushed
properly.

As a bonus add capability to write to memory marked as read only
by the MMU, which allows software breakpoints in such memory
regions.
2010-02-19 08:18:12 +01:00
David Brownell
aa8db989b9 ARM920T scanchain 15 comments/cleanup
For folk who don't know the ARM920 JTAG interface very well, the
two modes of scan chain 15 access to CP15 are confusing.

Make those parts of the ARM920 code less opaque, by:

 - Adding comments referencing the relevant parts of the TRM,
   catching up to similar updates in the User's Guide.

 - Replacing magic numbers in physical access clients with
   symbolic equivalents.

No functional change.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
2010-02-16 18:50:16 -08:00
Marc Pignat
ff404da155 arm920: add virt2phys fn
Copy of the 926ejs function. I have tested it only using
my rtems application (where virtual address mapping == physical).

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-02-12 08:31:06 +01:00
Øyvind Harboe
b8e930e3bf arm7/9: enable check that DCC downloads have been enabled
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
2010-01-13 12:00:02 +01:00
David Brownell
a42bea654c ARM720: help/usage updates
Deprecate the "pass an instruction opcode" flavor of cp15
access in favor of the "arm mcr ..." and "arm mrc ..."
commands, which offer fewer ways to break things.

Use the same EBNF syntax in the code as for the user's guide.

Update User's Guide to say where to find those magic values
(which table in the ARM920 TRM).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
2010-01-07 16:30:09 -08:00