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4d7c48fb80
On CC32xx family of devices, sysrequest is disabled, and vectreset is blocked by the boot loader (stops in a while(1) statement). srst reset can leave the target in a state that prevents debug. This change enables using vectreset on SF variants by moving the PC to the start of the user application in internal flash. This allows for a more reliable reset, but with two caveats: 1) This only works for the SF variant with internal flash. 2) This only resets the CPU and not any peripherals. Tested on CC3220SF rev B Launchpad in both SWD and JTAG modes. Confirmed proper behavior of reset, reset init, reset halt, and reset run commands. Update: reworked per comment in code review. Re-tested with CC3220SF Launchpad as both CC3220SF and as CC32xx board to confirm reset behavior as expected. Update: Added adapter srst delay 1100 line to the CC3200 LaunchXL configuration file. Change-Id: Ibc042d785c846c2223ae55b8f2410b75ed2df354 Signed-off-by: Edward Fewell <efewell@ti.com> Reviewed-on: http://openocd.zylin.com/5489 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
41 lines
1.1 KiB
INI
41 lines
1.1 KiB
INI
#
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# Texas Instruments CC3220SF - ARM Cortex-M4
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#
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# http://www.ti.com/CC3220SF
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#
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source [find target/swj-dp.tcl]
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source [find target/icepick.cfg]
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source [find target/ti_cc32xx.cfg]
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set _FLASHNAME $_CHIPNAME.flash
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flash bank $_FLASHNAME cc3220sf 0 0 0 0 $_TARGETNAME
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#
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# On CC32xx family of devices, sysreqreset is disabled, and vectreset is
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# blocked by the boot loader (stops in a while(1) statement). srst reset can
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# leave the target in a state that prevents debug. The following uses the
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# soft_reset_halt command to reset and halt the target. Then the PC and stack
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# are initialized from internal flash. This allows for a more reliable reset,
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# but with two caveats: it only works for the SF variant that has internal
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# flash, and it only resets the CPU and not any peripherals.
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#
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proc ocd_process_reset_inner { MODE } {
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soft_reset_halt
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# Intialize MSP, PSP, and PC from vector table at flash 0x01000800
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mem2array boot 32 0x01000800 2
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reg msp $boot(0)
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reg psp $boot(0)
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reg pc $boot(1)
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if { 0 == [string compare $MODE run ] } {
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resume
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}
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cc32xx.cpu invoke-event reset-end
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}
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