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riscv-openocd/contrib/loaders/watchdog/armv7m_kinetis_wdog.s

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contrib: replace the GPLv2-or-later license tag Replace the GPLv2-or-later boilerplate with the SPDX tag. The SPDX tag on files *.c is incorrect, as it should use the C99 single line comment using '//'. But current checkpatch doesn't allow C99 comments, so keep using standard C comments, by now. Change-Id: I380d552940f1c405309a3346454251c0e80b5a45 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7159 Tested-by: jenkins
2022-08-30 15:18:31 -05:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
/***************************************************************************
* Copyright (C) 2015 Tomas Vanek *
* vanekt@fbl.cz *
***************************************************************************/
/*
Disable watchdog for Kinetis Kx and KVx
flash Kinetis: handle all types of watchdog, disable in reset-init Active watchdog forces reset during armv7m_checksum_memory() in verify_image command if run just after reset init. COP watchdog in KL series and WDOG32 in KE1 series have longer timeout however they need to be disabled too. The change extends 'kinetis disable_wdog' command to optionally probe the chip and use appropriate algorithm to disable watchdog. Setting of cache type is also split from flash_support flags. Tcl command 'kinetis disable_wdog' is called in reset-init event. Change-Id: I3191e230f38b679ed74f2a97fe323ef8fb3fe22e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3901 Tested-by: jenkins Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2016-12-26 12:59:10 -06:00
Parameters:
r0 ... WDOG base (in)
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
Used instruction set should work on both Cortex-M4 and M0+
*/
.text
.syntax unified
.cpu cortex-m0
.thumb
/* WDOG registers offsets */
WDOG_STCTRLH = 0
WDOG_UNLOCK = 0x0e
WDOG_KEY1 = 0xc520
WDOG_KEY2 = 0xd928
.thumb_func
start:
/* WDOG_UNLOCK = 0xC520 */
ldr r2, =WDOG_KEY1
flash Kinetis: handle all types of watchdog, disable in reset-init Active watchdog forces reset during armv7m_checksum_memory() in verify_image command if run just after reset init. COP watchdog in KL series and WDOG32 in KE1 series have longer timeout however they need to be disabled too. The change extends 'kinetis disable_wdog' command to optionally probe the chip and use appropriate algorithm to disable watchdog. Setting of cache type is also split from flash_support flags. Tcl command 'kinetis disable_wdog' is called in reset-init event. Change-Id: I3191e230f38b679ed74f2a97fe323ef8fb3fe22e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3901 Tested-by: jenkins Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2016-12-26 12:59:10 -06:00
strh r2, [r0, WDOG_UNLOCK]
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
/* WDOG_UNLOCK = 0xD928 */
ldr r2, =WDOG_KEY2
flash Kinetis: handle all types of watchdog, disable in reset-init Active watchdog forces reset during armv7m_checksum_memory() in verify_image command if run just after reset init. COP watchdog in KL series and WDOG32 in KE1 series have longer timeout however they need to be disabled too. The change extends 'kinetis disable_wdog' command to optionally probe the chip and use appropriate algorithm to disable watchdog. Setting of cache type is also split from flash_support flags. Tcl command 'kinetis disable_wdog' is called in reset-init event. Change-Id: I3191e230f38b679ed74f2a97fe323ef8fb3fe22e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3901 Tested-by: jenkins Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2016-12-26 12:59:10 -06:00
strh r2, [r0, WDOG_UNLOCK]
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
/* WDOG_STCTRLH clear bit 0 */
movs r4, #1
flash Kinetis: handle all types of watchdog, disable in reset-init Active watchdog forces reset during armv7m_checksum_memory() in verify_image command if run just after reset init. COP watchdog in KL series and WDOG32 in KE1 series have longer timeout however they need to be disabled too. The change extends 'kinetis disable_wdog' command to optionally probe the chip and use appropriate algorithm to disable watchdog. Setting of cache type is also split from flash_support flags. Tcl command 'kinetis disable_wdog' is called in reset-init event. Change-Id: I3191e230f38b679ed74f2a97fe323ef8fb3fe22e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3901 Tested-by: jenkins Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2016-12-26 12:59:10 -06:00
ldrh r2, [r0, WDOG_STCTRLH]
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
bics r2, r4
flash Kinetis: handle all types of watchdog, disable in reset-init Active watchdog forces reset during armv7m_checksum_memory() in verify_image command if run just after reset init. COP watchdog in KL series and WDOG32 in KE1 series have longer timeout however they need to be disabled too. The change extends 'kinetis disable_wdog' command to optionally probe the chip and use appropriate algorithm to disable watchdog. Setting of cache type is also split from flash_support flags. Tcl command 'kinetis disable_wdog' is called in reset-init event. Change-Id: I3191e230f38b679ed74f2a97fe323ef8fb3fe22e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3901 Tested-by: jenkins Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2016-12-26 12:59:10 -06:00
strh r2, [r0, WDOG_STCTRLH]
flash Kinetis: new KVx family added Cortex-M0+ and M4 motor control MCUs KV10, KV11, KV30, KV31, KV42, KV44 and KV46 added to SDID identification. Watchdog disable code changed to work on Cortex-M0+ (KV1x) Protection size set to 1K for 16K flash devices (KV10Z16) - cherry picked from Andrey Smirnov's change #2051 Change-Id: Ia6f4868eaf7e2cb6ad6a736210c703a67e0027be Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3235 Tested-by: jenkins Reviewed-by: Kyle Manna <kyle.manna@fuel7.com> Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2015-12-19 05:34:31 -06:00
/* OpenOCD checks exit point address. Jump to the very end. */
b done
.pool
/* Avoid padding at .text segment end. Otherwise exit point check fails. */
.skip ( . - start + 2) & 2, 0
done:
bkpt #0
.end