This function does two separate things, powering up the DP and setting
up a MEM-AP. But the DP needs to be powered before even searching for a
MEM-AP to initialize and targets may have multiple MEM-APs that need
initializing.
Split the function into dap_dp_init() and mem_ap_init() and change all
call sites to use the appropriate one.
Change-Id: I92f55e09754a93f3f01dd8e5aa1ffdf60c856126
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3151
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reduce use of magic numbers and add AXI type MEM-AP detection. Don't try
to call dap_rom_display on a non-existent AP.
AP identification is unique per designer, so make sure the JEDEC code
matches ARM when interpreting the AP type.
Change-Id: I8e86b7de61811382afe99bf15094ab71b43f5fdf
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3150
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Change the debug_ap and memory_ap fields of the cortex_a target and
the debug_ap field of the cortex_m target to be pointers to the
struct adiv5_ap instead of AP numbers in some known DAP.
This reduces the dependency on the DAP struct in the targets and
enables MEM-AP accesses to take the relevant AP as parameter.
Change-Id: I39d7b134d78000564b7eec5bff464adf0ef89147
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3147
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This required fixing the AP ID parsing in dap_find_ap() to
match IHI0031C. The AXI type was added too.
Change-Id: I44577a7848df37586e650dce0fb57ac26f5f858c
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3146
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This will make it possible to reference directly the AP used for debug
in the target instance and remove the DAP reference. This will in turn
enable getting rid of the need to select an "active" AP in the DAP (using
dap apsel).
Change-Id: I265846a427c714204f4fd3df3cdb75843686c2d0
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3144
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Not clear what it was supposed to be used for. It probably shouldn't.
Change-Id: Ife1d833e59ba80f93876447d752a0ca7e7b57b0f
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3143
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
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>
Making the SWD driver aware of the DAP that controls it is a layering
violation.
The only usage for the DAP pointer is to store the number of idle cycles
the AP may need to avoid WAITs. Replace the DAP pointer with a cycle
count hint instead to avoid future misuse.
Change-Id: I3e64e11a43ba2396bd646a4cf8f9bc331805d802
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3141
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Separate out the values from adiv5_dap that are associated with a specific AP into a new struct, so we can properly support multiple APs. Remove the DAP struct from the armv7* structs, because we can have multiple CPUs per DAP, and we shouldn't have multiple DAP structs. Tidy up a few places where ap_current is used incorrectly.
Change-Id: I0c6ef4b49cc86b140366347aaf9b76c07cbab0a8
Signed-off-by: Patrick Stewart <patstew@gmail.com>
Reviewed-on: http://openocd.zylin.com/2984
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Prepare to support multiple cortex-m cores on one DAP. Uses mem_ap_sel_*
functions and removes mem_ap_* functions. Adds a new debug_ap
parameter to the cortex_m (currently set to zero as in existing code).
Change-Id: I6926029d1e7bf44a42d453d1aff349bda824ba72
Signed-off-by: Patrick Stewart <patstew@gmail.com>
Reviewed-on: http://openocd.zylin.com/2983
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
ERROR_WAIT is better than ERROR_FAIL in timeout condition.
Change-Id: Iefe837f276a9091ce6c18db5947212c449f49d89
Signed-off-by: Alamy Liu <alamy.liu@gmail.com>
Reviewed-on: http://openocd.zylin.com/2934
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This is a TODO in the src/target/arm_adi_v5.h for MEM-AP registers.
Some new registers are introduced in ADIv5.2 specification.
MEM_AP_REG_MGT (0x20) // Memory Barrier Transfer register
MEM_AP_REG_TAR64 (0x08) // Bits[63:32] of Transfer Address
MEM_AP_REG_BASE64 (0xF0) // Bits[63:32] of Debug Base Address
Refer to
7.5 MEM-AP register summary in
IHI0031C: ARM Debug Interface Architecture Specification ADIv5.0 to ADIv5.2
Change-Id: I3bc4296a04c35f5c64f851e5865d3099922613fa
Signed-off-by: Alamy Liu <alamy.liu@gmail.com>
Reviewed-on: http://openocd.zylin.com/2904
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Problem
No matter what target->coreid is, it always shows
Detected core 0 dbgbase: ...
In dap_lookup_cs_component(), it decreases the core index value to zero
in order to find the desired core.
The reference to coreidx is necessary considering "a device which has nested
ROM tables, with each core described in its own table." (by Paul Fertser).
Change-Id: I9b56d45d6edf6639e748a625ab27787f8e5a5776
Signed-off-by: Alamy Liu <alamy.liu@gmail.com>
Reviewed-on: http://openocd.zylin.com/2902
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
They are only used to initialize the flash bank sectors and never modified.
Explicitly specify the array length while at it.
Cleanup before adding XMC4800 support.
Change-Id: I2985b9a9946b67798dbfd47d8b219d93a7ffc3da
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3131
Tested-by: jenkins
Reviewed-by: Jeff Ciesielski <jeffciesielski@gmail.com>
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
cortex_a_read_apb_ab_memory_fast() uses the wrong order of ITR and DSCR
writes when setting up the transfer. ARM DDI0406C says in C8.2 regarding
"Fast mode" operation to first switch to fast mode and then latch the
instruction in ITR. Current implementation first wrote ITR, causing
the instruction to be executed immediately, then switched to fast mode
without an instruction latched. Repeated reading of DTRTX didn't
execute LDC and thus replicated its current content into the whole buffer.
This patch uses the following, revised algorithm:
1) switch to non-blocking mode and issue the LDC for the first word
2) if more than one word is to be read:
- switch to fast mode
- latch the LDC instruction into ITR (it is _not_ executed)
- issue (count-1) reads of DTRTX register, each read returns the current
content of DTRTX and re-issues the latched instruction
-> now the second-to-last word is in the buffer and the LDC for the last
word has been issued.
3) wait for the last instruction to complete
4) switch back to non-blocking mode
5) Read DTRTX for the last (or: only) word and put it into the buffer
Change-Id: I44f5c585962ffa5af257c3d5a2a802c122b6b1e4
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3122
Tested-by: jenkins
Reviewed-by: Christopher Head <chead@zaber.com>
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
When accessing memory through the ARM core, privilege levels and mmu
access permissions observed. Thus it depends on the current mode of the
ARM core whether an access is possible or not. the ARM in USR mode can
not access memory mapped to a higher privilege level. This means, if the
ARM core is halted while executing at PL0, the debugger would be
prevented from setting a breakpoint at an address with a higher privilege
level, e.g. in the OS kernel. This is not desirable.
cortex_a_check_address() tried to work around this by predicting if an
access would fail and switched the ARM core to SVC mode. However, the
prediction was based on hardcoded address ranges and only worked for
Linux and a 3G/1G user/kernel space split.
This patch changes the policy to always switch to SVC mode for memory
accesses. It introduces two functions cortex_a_prep_memaccess() and
cortex_a_post_memaccess() which bracket memory reads and writes. These
function encapsulate all actions necessary for preparation and cleanup.
Change-Id: I4ccdb5fd17eadeb2b66ae28caaf0ccd2d014eaa9
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3119
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
when disabling the mmu to access physical addresses, normally the d-cache
must be disabled as well. Disabling the d-cache also requires a full
clean&invalidate. However, since all memory writes are treated as write-
through no-allocate and memory reads do not allocate cache lines,
effectively the d-cache state does not change at all. We can therefore
save the the d-cache disabling and flushing.
This patch also simplifies the function a bit.
Change-Id: Ia17c56a28f432156429cd4596107e3652b788e63
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3114
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
for minimal impact on the hardware state, force all memory accesses to
bypass the caches and tlbs. This may actually be the default, but ARM
recommends in DDI0406C to set proper default values on debug init.
Change-Id: If5ac097b6ee725c047b1e86c2f90eabe16b98c7b
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3079
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
Other cache functions use an updated pattern for the address range loop.
Bring dcache clean and flush functions in line.
Change-Id: Iccb4a05c49054471033a3403363110cb08245d5b
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3035
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Call armv7a_l1_d_cache_flush_virt() before writing the breakpoint,
to make sure the d-cache is clean and invalid at the breakpoint
location down to PoC.
Call armv7a_l1_d_cache_inval_virt() after writing the breakpoint
again, so that d-cache will pick up the modified code.
Call armv7a_l1_i_cache_inval_virt() after writing the breakpoint
to memory to make the change visible to the CPU.
Change-Id: I24fc27058d99cb00d7f6002ccb623cab66b0d234
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3033
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
D-Cache invalidate is a dangerous operation. It will only work correctly
if full cache lines are invalidated. When partial cache lines are
invalidated, i.e. the target address range does not start and end
at a cache line boundary, cpu data writes outside of the target range
will be dropped. This patch adds special treatment for partial cache
lines by doing a clean & invalidate on the partial lines before
invalidating the rest of the range.
Change-Id: I64099ddb058638e990a7eb0ee911b9cc8f6f8901
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3034
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
The following changes are implemented:
- Clean&Invalidate the VA range to PoC *before* the write takes place
- Remove SMP handling since DCCIMVA instruction already maintains SMP
coherence.
- Remove separate Invalidate step
Change-Id: I19fd3cc226d8ecf2937276fc63258b6a26e369a7
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3027
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
This patch adds a function for cleaning & invalidating a virtual
address range from the architecture caches down to the point of
coherence.
Change-Id: I4061ab023a3797fabc967f3a34498034841d52c6
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3026
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
There's only one function left that handles cache info display,
no need any more for a function pointer and runtime initialization.
Change-Id: I90b09577f81607917b11f0ab5600a0e2dce223e2
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3025
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
ARMv7 architecture allows up to 7 cache levels that are architecturally
visible, as opposed to "system caches", which are outside of the domain
defined by ARMv7 and require separate management. This patch enables
detection and identification of caches at all levels. It also implements
a new "flush-all" function that cleans & invalidates all cache levels to
the "Point of Coherence".
Change-Id: Ib77115d6044d39845907941c6f031e208f6e0aa5
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3024
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
This patch is on the path to unified handlers for both inner and
outer caches. It removes the special overrides installed when
an outer cache is configured.
Change-Id: I747f2762c6c8c76c700341cbf6cf500ff2a51476
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3022
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
The outer cache is not necessarily at L2 in a system. Rename functions
to make that clear.
Change-Id: Ia636a4844f50634f2bdf5cdce285febc1a47c11f
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3020
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
This patch introduces, new command set and handlers for l1 and l2x caches.
Patch set 10 folded the following changes into this one:
Ib1a2a1fc1b929dc49532ac13a78e8eb796ab4415
If8d87a03281d0f4ad402909998e7834eb4837e79
I0749f129fa74e04f4e9c20d143a744f09ef750d8
Change-Id: I849f4d1f20610087885eeddefa81d976f77cf199
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/2800
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
This was needed for ahb access
Change-Id: I638f45a276a593c08140b5d9d7480617aa85f096
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Reviewed-on: http://openocd.zylin.com/2796
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
Problem
dap->ap_current is register value, not field value.
it restores invalid ap when it calls dap_ap_select(dap, ap_old) later.
* assume the current ap is 1, dap->ap_current value would be (1 << 24).
ap_old = dap->ap_current; <-- ap_old = 1<<24 = 0x1000000.
...
dap_ap_select(dap, ap_old); <-- select 0x1000000, not 1.
* All AP registers accessing fail afterwards.
One of the reproducible case(s): CORE residents in AP >= 1
dap_lookup_cs_component() being used to find PE(*).
In most cases, PE would be found in AP==0, hence the problem is hidden.
When AP number is 1, dap->ap_current would have the value of 1<<24.
Anyone get the AP value with dap->ap_current and resotre it later would
select the wrong AP and all accessing later would fail.
The ARM Versatile and/or FPGA would have better chance to provide this
kind of environment that PE residents in AP>=1. As they have an 'umbrella'
system at AP0, and main system at AP>=1.
* PE: Processing Element. AKA Core. See ARM Glossary at
http://infocenter.arm.com/help/topic/com.arm.doc.aeg0014g/ABCDEFGH.html
Fix
Use dap_ap_get_select() to get ap value.
a. Retrieve current ap value by calling dap_ap_get_select();
src/flash/nor/kinetis.c
src/target/arm_adi_v5.c
b. The code is correct (dap->ap_current >> 24), but it's better to use
dap_ap_get_select() so everything could be synchronized.
src/flash/nor/sim3x.c
Change-Id: I97b5a13a3fc5506cf287e299c6c35699374de74f
Signed-off-by: Alamy Liu <alamy.liu@gmail.com>
Reviewed-on: http://openocd.zylin.com/2935
Reviewed-by: Andreas Färber <afaerber@suse.de>
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
If supported, the maximum transport speed is now retrieved from the
device.
Change-Id: I614f405ec91cf199c851781785fd26cbd10c37a6
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/2955
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This patch uses libjaylink which is a library to access J-Link
devices. As other tools which are not in the scope of OpenOCD also
need to access J-Link devices a library is used. A firmware upgrade
tool and an advanced configuration tool for J-Link devices are under
development.
Further versions of libjaylink will support additional features
OpenOCD could benefit from. This includes TCP/IP as additional
possibility to connect to J-Link devices as well as power tracing and
device internal communication. The latter is used to access
peripherals on some development boards (e.g EFM32 STK and DVK).
Integration of libjaylink is realized with a git submodule like
jimtcl. As libjaylink depends on libusb-1.0 only, no additional
dependency is introduced for OpenOCD.
All low-level JTAG and SWD implementations of the current driver are
left untouched and therefore no incompabilities are to be expected.
Improvements of this patch:
* Support for more USB Product IDs, including those with the new
scheme (0x10xx). The corresponding udev rules are also updated.
* Device selection with serial number and USB address.
* Adaptive clocking is now correctly implemented and only usable for
devices with the corresponding capability.
* The target power supply can now be switched without the need for
changing configuration and power cycling the device.
* Device configuration is more restrictive and only allowed if the
required capabilities are available.
* Device configuration now shows the changes between the current
configuration of the device and the values that will be applied.
* Device configuration is verified after it is written to the device
exactly as the vendor software does.
* Connection registration is now handled properly and checks if the
maximum number of connections on a device is reached. This is also
necessary for devices which are attached via USB to OpenOCD as
some device models also support connections on TCP/IP.
* Serial Wire Output (SWO) can now be captured. This feature is not
documented by SEGGER however it is completely supported by
libjaylink.
This patch and libjaylink were tested on Ubuntu 14.04 (i386),
Debian 7 (amd64), FreeBSD 10.0 (amd64) and Windows XP SP3 (32-bit)
with the following device and target configurations:
* JTAG: J-Link v8.0, v9.0 and v9.3 with AT91SAM7S256
* SWD: SiLabs EFM32 STK 3700 (EFM32GG990F1024)
* SWD: J-Link v8.0, v9.0 and v9.3 with EFM32GG990F1024
* SWD: XMC 2Go (XMC1100)
* SWD: XMC1100 Boot Kit (XMC1100)
* SWD: IAR Systems / Olimex Eval Board (LPC1343F)
* SWD: Nordic Semiconductor nRF51 Dongle (nRF51422)
* SWD: SiLabs EZR32 WSTK 6220A (EZR32WG330FG60G)
Except for Windows XP all builds are tested with Clang in addition to
GCC. This patch and libjaylink are not tested on OSX yet.
Change-Id: I8476c57d37c6091c4b892b183da682c548ca1786
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/2598
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
http://support.code-red-tech.com/CodeRedWiki/DebugAccessChip
> Note that once you have recovered debug access to your MCU, then in most cases you should then modify your Debug Configuration to turn vector catch off again. If this is not done, then this can cause problems in some circumstances with some versions of the Code Red IDE. For example with NXP LPC13xx parts, connecting more than once to the MCU with vector catch enabled can lead to the part ID being incorrectly read - which can again cause debug connections to fail
This patch adds an alternative part ID for LPC1343. With this patch "program" command works fine for flashing.
Change-Id: I8632e898a4c33102455925d25715b4f4edfa1d97
Signed-off-by: Jakub Kubiak <jakub@kubiak.es>
Reviewed-on: http://openocd.zylin.com/2782
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This adds docs, example config, flash driver.
Driver is only supports K1921VK01T model for now.
Change-Id: I135259bb055dd2df1a17de99f066e2b24eae1b0f
Signed-off-by: Bogdan Kolbov <kolbov@niiet.ru>
Reviewed-on: http://openocd.zylin.com/3011
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
The probe and info methods had duplicate sections decoding family names
to generate a human friendly part name. Extract this to a common
helper.
Change-Id: I4c6309d83c601e154b7c14ad9c15c53854ee1e98
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Reviewed-on: http://openocd.zylin.com/2932
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Basic basic support to get running, magic numbers taken from revision
0.90 of the reference manual.
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Change-Id: Iff6ab94d30698f056ef09f7a856b7285fed8f441
Reviewed-on: http://openocd.zylin.com/2931
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
By saving a pointer to the tail of the list,
we don't need to traverse the entire command
queue before we're able to append an item to
it.
With this patch, I see a 10% improvement when
using the embedded XDS100v2 on AM437x IDK board
to load a 4MiB binary (linux zImage) to DDR
with load_image.
IOW, we went from ~305kB/sec to ~336kb/sec.
Change-Id: Idb55d49f0d0106043374ab520b2f3b6b32f2c50f
Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-on: http://openocd.zylin.com/2709
Tested-by: jenkins
Reviewed-by: Stian Skjelstad <stian@nixia.no>
Reviewed-by: Daniele Emancipato <daniele12457@hotmail.com>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Andreas Fritiofson
Patrick Stewart
Alamy Liu
Paul Fertser
Andreas Färber
Matthias Welwarsky
Oleksij Rempel
Marc Schink
Jakub Kubiak
Bogdan Kolbov
Karl Palsson
Felipe Balbi