2022-06-12 21:42:27 +00:00
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# SPDX-License-Identifier: GPL-2.0-or-later
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2013-09-28 10:23:15 +00:00
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#
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2017-10-17 09:38:16 +00:00
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# Silicon Labs (formerly Energy Micro) EFM32 target
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#
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# Note: All EFM32 chips have SWD support, but only newer series 1
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# chips have JTAG support.
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2013-09-28 10:23:15 +00:00
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#
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source [find target/swj-dp.tcl]
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME efm32
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}
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# Work-area is a space in RAM used for flash programming
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# By default use 2kB
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if { [info exists WORKAREASIZE] } {
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set _WORKAREASIZE $WORKAREASIZE
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} else {
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set _WORKAREASIZE 0x800
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}
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if { [info exists CPUTAPID] } {
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set _CPUTAPID $CPUTAPID
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} else {
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2017-10-17 09:38:16 +00:00
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if { [using_jtag] } {
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set _CPUTAPID 0x4ba00477
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} {
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set _CPUTAPID 0x2ba01477
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}
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2013-09-28 10:23:15 +00:00
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}
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2017-10-17 09:38:16 +00:00
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swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
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2018-03-23 20:17:29 +00:00
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dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
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2013-09-28 10:23:15 +00:00
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2019-08-23 13:51:00 +00:00
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adapter speed 1000
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2013-09-28 10:23:15 +00:00
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set _TARGETNAME $_CHIPNAME.cpu
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2018-03-23 20:17:29 +00:00
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target create $_TARGETNAME cortex_m -dap $_CHIPNAME.dap
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2013-09-28 10:23:15 +00:00
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$_TARGETNAME configure -work-area-phys 0x10000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
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set _FLASHNAME $_CHIPNAME.flash
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flash bank $_FLASHNAME efm32 0 0 0 0 $_TARGETNAME
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flash/nor/efr32: fixed lockbits and user data
Changed flash driver to support writing to the user data page, as well as to any portion of the lockbits page above 512 bytes (the amount used for the actual page lock words). The top part of the lockbits page is used on at least the EFR32xG1 chips for the SiLabs bootloader encryption keys.
As presented to the user, the lockbits page is the same size as the other pages, but any attempt to write to its low 512 bytes is an error. To enforce this, efr32x_write is renamed to efm32x_priv_write and a wrapper function is provided in its place. If the user erases the lockbits page, the driver rewrites the cached lock words after the erase. When the driver erases the lockbits page in order to update the lock words, it first takes a copy of anything stored in the top part of the page, and re-programs it after the erase operation.
There are now multiple instances of flash_bank for each target, and the flash_bank instances must share their cached lock words to operate as intended. Therefore, when a bank is created, the global flash bank list is used to find any other banks that share the same target. Since some banks in the global list are invalid at the time free_driver_priv is called, reference counting is used to decide when to free driver_priv.
To avoid the need to find the lockbits flash_bank from another flash_bank, efm32x_priv_write and efm32x_erase_page now take an absolute address.
There didn't seem to be any reason to prohibit unprotecting individual flash pages, so that limitation is removed from efm32x_protect().
This addresses ticket #185.
Valgrind-clean, except for 2x 4kiB not freed/still reachable blocks that were allocated by libudev.
No new Clang analyzer warnings, no new sanitizer warnings.
Signed-off-by: Doug Brunner <doug.a.brunner@gmail.com>
Change-Id: Ifb22e6149939d893f386706e99b928691ec1d41b
Reviewed-on: https://review.openocd.org/c/openocd/+/6665
Tested-by: jenkins
Reviewed-by: Fredrik Hederstierna <fredrik.hederstierna@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
2021-10-25 17:15:07 +00:00
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flash bank userdata.flash efm32 0x0FE00000 0 0 0 $_TARGETNAME
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flash bank lockbits.flash efm32 0x0FE04000 0 0 0 $_TARGETNAME
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2013-09-28 10:23:15 +00:00
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if {![using_hla]} {
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# if srst is not fitted use SYSRESETREQ to
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# perform a soft reset
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cortex_m reset_config sysresetreq
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}
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