Commit Graph

6039 Commits

Author SHA1 Message Date
Spencer Oliver 9060ae7de5 stm32f1x: fix stm32f0/f3 broken unlock
The STM32F0 and F3 devices use a different default RDP to configure a
unlocked device, make sure we use that.

Change-Id: I170779461412c4c202c2cfc8d90baedb7e388150
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/984
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-31 19:08:10 +00:00
Spencer Oliver aebe7596f6 stm32f1x: preserve user option byte data
The user is able to use 2bytes of the options byte data for whatever
purpose they wish. Make sure we preserve this during an option erase/write.

Change-Id: Ibf951b11c59a148e671b1eb47fdc9b4f49ccae15
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/983
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-31 19:08:01 +00:00
Szymon Modzelewski b9dbf569b4 flash: stm32f1x: write option bytes using the loader
Some debuggers (stlink) can't issue 16 bit writes and have to use a
loader to write flash memory.

Currently the loader is not used for option bytes, causing
stm32x_write_options to fail silently on such hardware.

Fix this by using stm32x_write_block to write option bytes as well.

Change-Id: I49c29d53ab5e162463cb349d4c89bef96467e587
Signed-off-by: Szymon Modzelewski <szmodzelewski@gmail.com>
Reviewed-on: http://openocd.zylin.com/480
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-31 19:07:51 +00:00
Andreas Fritiofson cf1418e9a8 doc: Clarify the topic field in the commit comment template
Change-Id: Iea1f3b665b011ca3748800048039d3f6b33d7756
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1101
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
Reviewed-by: Tomasz CEDRO <cederom@tlen.pl>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-30 20:07:39 +00:00
Spencer Oliver 9b045f62f4 flash: stm32lx fallback to slow memory writes when no working area
The current stm32lx driver will fail if no working area is
provided - fallback to using slow writes if this is the case.

Change-Id: I92b1535fec4aebc855c63ce2c54b10f168f3c07e
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1007
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 11:36:40 +00:00
Spencer Oliver 80649fc3d5 cfg: increase stm32l-discovery working area
This part has 16k ram so make it all available.

Change-Id: Ifeb7bc850bfe4f68d0affb8f6a0931b4327e7257
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1006
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 11:35:16 +00:00
Spencer Oliver 84043a95e1 cfg: stm32l use minimum family ram size for working area
The smallest pert in the family has 10k RAM, so use that as a default
for the working area.

Change-Id: I78be0d14a254c109ac15a7163552c6132f810416
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1005
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 11:34:46 +00:00
Spencer Oliver 54a8640df0 cfg: enable stlink stm32l HSI
Switch to using the internal HSI when a reset init is called, this also
matches the std stm32l cfg.

Read (verify) speed is increased from 17 to 120 KiB/s.

Change-Id: Ic94ba85949ffdefa17b7be45eef14e30f941d107
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1004
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 11:34:14 +00:00
Spencer Oliver f82798c814 flash: add new stm32l HD variant
Updated as per latest RM0038 Rev 6.

Change-Id: Ia11309a1cdc3b8986f808b33a5c565bdc0ba58b0
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1003
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 11:33:04 +00:00
Spencer Oliver 977db554c4 flash: format stm32f2x driver defines
Change-Id: Ie903996368a8d4313df87839d5ba3f2a102796a3
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/987
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-12-30 08:47:34 +00:00
Spencer Oliver 928289773c stlink: print target voltage if supported
The stlink/v2 has the ability to check the target voltage if the firmware
is recent enough (>= J13).

As a debugging aid we check the voltage at startup and issue an error if
this is too low to debug reliably.

Change-Id: I98e251f3880e31049c4307051c30bedd3451cf87
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/980
Tested-by: jenkins
2012-12-24 11:19:53 +00:00
Spencer Oliver e0d4d46dbe stlink: add generic open error routine
Change-Id: I1cd18896ab2a37255471a2d160befed8dd8fb544
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/979
Tested-by: jenkins
2012-12-24 11:18:52 +00:00
Spencer Oliver 95025349fa helper: improve windows gdb pipe performance
Reducing the select and MsgWaitForMultipleObjects timeouts to 1ms makes
a 2-300+% increase in the step time of gdb when using pipes under windows OS.

Change-Id: Id7e52cfb2b206347a9caea61672885a3e2b186de
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1050
Tested-by: jenkins
2012-12-24 11:01:03 +00:00
Spencer Oliver 0466ee7e4a gdb: fix correct shutdown when using pipes
50d5441e2a commit added a regression when
using pipes with GDB, OpenOCD would appear to hang when exiting GDB.

This fixes that behaviour so we shutdown correctly.

Change-Id: I9b337c2bdd41b1966de1c7631118257afcbfa6bd
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/993
Tested-by: jenkins
2012-12-24 11:00:52 +00:00
Spencer Oliver c3e537a340 flash: add stm32f2x rev X
Updated as per ST RM0033 rev 5

Change-Id: I627fdab69b440b75b8e4f7c474216538fa5273a4
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1001
Tested-by: jenkins
2012-12-24 10:59:55 +00:00
Spencer Oliver 69359b1c52 doc: replace luminary with TI urls's
Change-Id: Ic8a768f5a498e78b96421c6137238593c159fd72
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/970
Tested-by: jenkins
2012-12-23 21:46:40 +00:00
Spencer Oliver 67801c061f docs: update docs to include info on TI ICDI
Change-Id: I3009920f512f76901d187318ee50284db34ab6f7
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/924
Tested-by: jenkins
2012-12-23 21:46:31 +00:00
Spencer Oliver adb8ec32dc icdi: add TI icdi interface
This is the new proprietary interface replacing the older FTDI based adapters.
It is currently fitted to the ek-lm4f232 and Stellaris LaunchPad.

Change-Id: I794ad79e31ff61ec8e9f49530aca9308025c0b60
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/922
Tested-by: jenkins
2012-12-23 21:46:20 +00:00
Spencer Oliver c7a6f065d2 hla: add ability to configure read/write buffer size
Other adapters (TI ICDI) that use this driver can use a larger
read/write buffer size than the original stlink could.

Change-Id: I9beb7748049097cbe29a2340799c450bd74e199d
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/948
Tested-by: jenkins
2012-12-23 21:46:10 +00:00
Spencer Oliver 561984c8f6 hla: fix watchpoints not being set
Watchpoints were not being enabled when the hl adapter target was resumed.
This effects both stlink and icdi interfaces.

Change-Id: Ia9f8a9415be97a467cd099b63b6bc9f7f37d0c0d
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/931
Tested-by: jenkins
2012-12-23 21:46:02 +00:00
Spencer Oliver bd1502eb0f rtos: rename stm32_stlink target to hla_target
Update rtos detection to use the new target name.

Change-Id: I4e55311bcfbc8af55708b43daf0c73b1c8145934
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/923
Tested-by: jenkins
2012-12-23 21:45:54 +00:00
Spencer Oliver 6c467da586 stlink: rename stlink cmd names
As part of the switch to using the hla for the stlink interface we rename
the cmds to a more generic name.

Update scripts to match new names.

Also add handlers for deprecated names.

Change-Id: I6f00743da746e3aa13ce06acfdc93c8049545e07
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/921
Tested-by: jenkins
2012-12-23 21:45:42 +00:00
Spencer Oliver 549d9bc72c target: add deprecated target name support
This enables us to change the target name without breaking any
target scripts.

Change-Id: I635f961e573264d3dab2560f3a803ef1986ccfde
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/919
Tested-by: jenkins
2012-12-23 21:45:23 +00:00
Spencer Oliver 1bba393e3c stlink: print version info
Print stlink info always rather than just when debug log enabled.

Change-Id: I2a29ef046925200e1c94624280c0b252fab5219a
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/925
Tested-by: jenkins
2012-12-23 21:38:09 +00:00
Spencer Oliver a047d87196 stlink: use common layout
Even though the stlinkv1 and stlinkv2 use different usb classes they share
the same layout scheme.

Merge the two into a common layout, thus enabling us to support other
adapter layouts.

Change-Id: I7d02c44a7f94ebc7f2cb5428b02ee40294fb430d
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/918
Tested-by: jenkins
2012-12-23 21:37:50 +00:00
Muranaka Masaki b7ea4a6162 flash: fm3 mb9bfxx7 mb9bfxx8 support
Patch submitted by Trac #55

Change-Id: I08b0d79d24fe9108ca0bbfbc9b45c60359b6d180
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/981
Tested-by: jenkins
2012-12-14 20:48:40 +00:00
Evan Hunter 26902bb317 rtos: Add Cortex-R4 support for ThreadX
Change-Id: I0b55af690ed917ca783d90d11dcf012f49792ed7
Signed-off-by: Evan Hunter <ehunter@broadcom.com>
Reviewed-on: http://openocd.zylin.com/994
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-14 20:45:22 +00:00
Kamal Dasu db42a373b7 mips_m4k: Fixed mips_m4k_resume code for smp targets
Fix for bug introduced in in mips smp support code
in the  resume logic that is checking for wrong return
value.

Change-Id: Ice3e0069f936b556fecc338ccc12ddba38deeaf6
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Reviewed-on: http://openocd.zylin.com/1048
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-11 13:11:07 +00:00
is2t 1e07f7bb6a LPC1788 target configuration file.
Change-Id: I68bd6b7c19d9d1bee13d0921c32b4490e68ab8f2
Signed-off-by: is2t <devel@is2t.com>
Reviewed-on: http://openocd.zylin.com/1002
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2012-12-11 12:42:32 +00:00
Spencer Oliver 71d43007c6 jtag: fix reset_config copy/paste error
As the other arg checks do not OR, it is assumed this is a copy/paste error
from the original code author.

Change-Id: I7dfc7396254a6f558887def951c57dfd4a0e6c2c
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/997
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2012-12-10 16:18:45 +00:00
Spencer Oliver 2d75ff3151 stlink: enable connect under reset
Currently if the target supports srst_nogate we wait until target assert_reset
until we get a chance to assert the srst.
However sometimes we will not get this far if the target has already failed
the initial scan.

This has been tested on stm32.

Change-Id: I2c4486942a011534d3e2044788563669bf457b60
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/972
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2012-12-10 16:17:25 +00:00
Spencer Oliver 67a848424b jtag: enable connect under reset
Currently if the target supports srst_nogate we wait until target assert_reset
until we get a chance to assert the srst.
However sometimes we will not get this far if the target has already failed
the jtag_examine_chain.

This has been tested on targets that support this behaviour (STM32 and STR9).

Change-Id: Ibcf7584b137b472f31ba6ddd5cd99d848c5508d1
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/971
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2012-12-10 16:16:35 +00:00
Spencer Oliver c91dbd41ba jtag: add connect_type reset_config mode flag
This adds the ability to request to the adapter how we want to connect to
the target, eg. while srst is asserted or not.

This ability can very handy for connecting to unresponsive targets.
A prerequisite is that the target supports srst_nogate.

Change-Id: I0f7c9475160048e8a963e16077754f5403ac8325
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/976
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2012-12-10 16:13:52 +00:00
Evan Hunter 539a9cf208 cortex_a: Fix target entry state route.
If target is disabled at init, then is examined using 'arp_examine', it
can get to cortex_a8_poll with the target state being unknown.

Change-Id: Ifffb345bf971d275d2eb1912648b29f0a75f6ccc
Signed-off-by: Evan Hunter <ehunter@broadcom.com>
Reviewed-on: http://openocd.zylin.com/954
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-09 21:30:18 +00:00
Kamal Dasu 6d76fc1328 mips_m4k: Added SMP debug support for mips architectures
This change adds smp debug support for mips platforms. The change
leverages the exiting gdb smp support as mentioned in the OpenOCD
documentation for using gdb in smp environemnt. Added commands
smp_on, smp_off, smp_gdb to control the smp mode. The implementation
also provides a way to send Jc packet and toggle the gdb display core
context as well.

Change-Id: I0835a5aed1844b6ebf8291582912f20695346003
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Reviewed-on: http://openocd.zylin.com/937
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-09 21:28:21 +00:00
Kamal Dasu 6565988064 mips_ejtag: Adding EJTAG 4.x and 5.x as valid versions
This is a minor change to log EJTAG version 4.x and 5.x
as valid versions when debug log is enabled.

Change-Id: Ie20458d033c6d22842cb4a31b56765d4ba2ff123
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Reviewed-on: http://openocd.zylin.com/936
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-12-09 21:27:47 +00:00
Spencer Oliver 27ad96e0d9 helper: fix code formatting
Change-Id: Ide2d704c9ef4f5563649d5db53bbdd3641868b70
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/995
Tested-by: jenkins
2012-12-03 16:37:03 +00:00
Aymeric Vincent 1a8223f28b Make NetBSD a recognized system
Change-Id: I7fcb540553da7833a8b6a82335a7296539a8f491
Signed-off-by: Aymeric Vincent <vincent.aymeric@gmail.com>
Reviewed-on: http://openocd.zylin.com/998
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: jenkins
2012-11-30 17:16:45 +00:00
Jason Moehlman 3e81c4b6df arm: Mis-aligned data issue fix.
Fixes issue with big endian hosts and mis-aligned data on some hosts.
Fixes unaligned access exception on hosts that do not support unaligned
access when debugging some arm targets.

Signed-off-by: Jason Moehlman <jmoehlma@linux-software.com>
Change-Id: I6bc6fb1b3c3565b256674b9ef43ed2afd14f5178
Reviewed-on: http://openocd.zylin.com/996
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
2012-11-30 11:02:05 +00:00
Spencer Oliver 7155349bd0 stlink: format src defines
Change-Id: I7c3fd6e84681e007f1983ad9b8c85369cf9f3ba1
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/978
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2012-11-23 21:41:34 +00:00
Spencer Oliver 9785f51f19 flash: add stm32f42x/stm32f43x support
Other than a larger memory layout these new devices also have an extra
MER1 bit to perform the mass erase.

Change-Id: I7110a05bac95c1707160d1f5622181664291eb4a
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/985
Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>
2012-11-19 22:16:16 +00:00
Salvador Arroyo 78807eb6ec mips: patch mips32_pracc_exec_write()
No function writes to MIPS32_PRACC_PARAM_IN addresses and probably has no much sense.
Any attempt to write to those addresses should be an error.

Change-Id: Iebea5fa9954e2cd56ad34976dd7d25009c6e6388
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/975
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:42:36 +00:00
Salvador Arroyo 5bb5620c48 mips: optimize mips32_pracc_read_regs() code
Current code needs 101 pracc accesses for this function, this code needs 12 less.
There is a singularity in this code, is the only function that restore
a register from param out instead from  pracc stack. Obviously the register
was previously stored at param out. This save 2 pracc accesses.

Change-Id: Ie95b6f983a3198dafc0eab2dd5acc11f871a8d83
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/958
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:42:25 +00:00
Salvador Arroyo 18077654af mips: optimize mips32_pracc_write_regs() code.
All the the loads are done with lui and ori instructions, there is
no need to save any register, they will be overwritten.
Like in the previous patch, for speed optimization in write code,
same instructions can be saved if the lower half word or the upper
half word is 0.
If the lower half word is 0, it can be loaded with only a lui instruction.
If the higher half word is 0 it can be done with an ori instruction with register 0.
This code saves 10 pracc accesses at a minimum, and 40 at a maximum,
obviously if register 2 to 31 are 0 or a half word is 0
Current code needs 91 pracc accesses.

Change-Id: I892c5b440191d0c7a474c96845d41c373b7fc637
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/957
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: jenkins
2012-11-16 12:42:03 +00:00
Salvador Arroyo f3e01106d9 mips: optimize write code for speed
All the writes are done by the new function mips32_pracc_write_mem_generic().
The code is similar to the read generic code.
The reuse of register 15 as memory base address saves 3 pracc accesses.
The first write takes 13(12) pracc accesses and for additional writes 3(2).
Loading miniprograms should take 25% less time and loading fastdata transfer
handler code should be over 2x faster.

Change-Id: Ia3b24ba084af33be99da19f00a7fd4d1b291f350
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/956
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:41:47 +00:00
Salvador Arroyo 83f3f2c4c7 mips: optimize read code for speed
Really nothing new that not explained in previous patches.
The code is expanded as needed, there are no loops in pracc code.
For the first value pracc accesses are reduced from 39 to 16
and for aditional values from 10 to 3.
dump_image should work around 3x faster.

Change-Id: I37c9b13395c09eb52a91f10cdb6cbaedef8ab98b
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/955
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:41:30 +00:00
Salvador Arroyo c09cd75d9b mips: optimize mips32_pracc_read_u32() function
This function is highly optimized, there is not much to
improve.
Loading the base address for pracc access with the new
defined MIPS32_PRACC_BASE_ADDR saves one instruction.
The memory address is loaded in too steps. First the upper
address is loaded. The lower address is passed as an offset in
the memory load instruction.
The offset is signed, if the lower address is in the range of
0x8000 to 0xffff the offset is a negative value, and the upper
address must be incremented by 1.
Pracc accesses are now 12 instead of 14.

Change-Id: I286945b240ed5c5d5cc540780a41a8a5fa075da3
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/952
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:41:14 +00:00
Salvador Arroyo 6644018337 mips: optimize CP0 read/write code
MIPS32_PRACC_BASE_ADDR is defined as 0xFF200000. Now is
possible to load the base address with a lui instruction and
only one pracc access.
Offsets to the pracc code addresses are defined to simplify the code
and probably make it a bit more readable or self-explained.

Change-Id: I853dd2d7fad52745931cc6e6be68c0ae156d897e
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/951
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: jenkins
2012-11-16 12:40:55 +00:00
Salvador Arroyo 9aad563d15 mips: code clean up in mips_m4k_debug_entry() function
The function mips_ejtag_read_debug() is defined in mips_ejtag.c
and is called only by mips_m4k_debug_entry() for reading the
CP0 debug register. The comment in this function is obviously wrong.
There is a generic function to read CP0 registers with similar code.
A call to mips32_cp0_read() should work in the same way.
The purpose of reading the debug register is to test if the DSS
bit is set and clear the SSt bit.
It is faster and easier if the SSt bit is cleared without any check.
Remark: DSS bit set only means that a debug single-step exception
ocurred, but it is not possible to step over a sdbbp instruction,
in this case DSS will not be set and the SSt bit not cleared by code.
Resume command at another address will step, so really the behavior
is not the same.

Change-Id: Ibd35f80e0f7669976d96f4ed813830cecf587971
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/950
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:40:34 +00:00
Salvador Arroyo 47d5f44fe0 mips: optimize mips_ejtag_step_disable() code
The code is a bit large compared to mips_ejtag_step_enable().
With the mips32 xori instruction the code can be
reused.
The number of pracc accesses are reduced from 18 to 7.

Change-Id: If3974ebd64da4461c22b089796646990e68e1b72
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/944
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
2012-11-16 12:40:14 +00:00