mirror of
git://git.code.sf.net/p/openocd/code
synced 2025-07-21 21:49:15 +10:00
a867e36f78
Tested on PSoC6 (Cortex-M0+ core), onboard KitProg2 in CMSIS-DAP mode, adapter_khz=1000. Plain read: flash read_bank 0 /dev/null takes 48 seconds. erase_check without this change: flash erase_check 0 takes horrible 149 seconds!! And the same command with the change applied takes 1.8 seconds. Quite a difference. Remove the erase-value=0 version of algorithm as the new one can check for any value. If the target is an insane slow clocked CPU (under 1MHz) algo timeouts. Blocks checked so far are returned and the next call uses increased timeout. Change-Id: Ic0899011256d2114112e67c0b51fab4f6230d9cd Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/4298 Tested-by: jenkins Reviewed-by: Jonas Norling <jonas.norling@cyanconnode.com> Reviewed-by: Andreas Bolsch <hyphen0break@gmail.com>
74 lines
2.2 KiB
ArmAsm
74 lines
2.2 KiB
ArmAsm
/***************************************************************************
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* Copyright (C) 2010 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/*
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parameters:
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r0 - pointer to struct { uint32_t size_in_result_out, uint32_t addr }
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r1 - value to check
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*/
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.text
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.syntax unified
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.cpu cortex-m0
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.thumb
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.thumb_func
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.align 2
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BLOCK_SIZE_RESULT = 0
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BLOCK_ADDRESS = 4
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SIZEOF_STRUCT_BLOCK = 8
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start:
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block_loop:
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ldr r2, [r0, #BLOCK_SIZE_RESULT] /* get size */
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tst r2, r2
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beq done
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ldr r3, [r0, #BLOCK_ADDRESS] /* get address */
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word_loop:
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ldr r4, [r3] /* read word */
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adds r3, #4
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cmp r4, r1
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bne not_erased
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subs r2, #1
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bne word_loop
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movs r4, #1 /* block is erased */
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save_result:
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str r4, [r0, #BLOCK_SIZE_RESULT]
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adds r0, #SIZEOF_STRUCT_BLOCK
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b block_loop
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not_erased:
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movs r4, #0
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b save_result
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/* Avoid padding at .text segment end. Otherwise exit point check fails. */
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.skip ( . - start + 2) & 2, 0
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done:
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bkpt #0
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.end
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