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| author | Matthias Welwarsky <matthias.welwarsky@sysgo.com> | 2018-04-19 09:56:14 +0200 |
|---|---|---|
| committer | Tim Newsome <tim@sifive.com> | 2018-05-08 15:21:49 -0700 |
| commit | ef88d58b7c2bcfe64090a15ba226edf1f3ff0466 (patch) | |
| tree | 178d67c856882dea016cf21fa94cc3c35870a5fb | |
| parent | 3fb65c4384d8960053fd19b87600e4c64f554374 (diff) | |
| download | riscv-openocd-ef88d58b7c2bcfe64090a15ba226edf1f3ff0466.zip riscv-openocd-ef88d58b7c2bcfe64090a15ba226edf1f3ff0466.tar.gz riscv-openocd-ef88d58b7c2bcfe64090a15ba226edf1f3ff0466.tar.bz2 | |
board: add configuration for stm32f103c8 "Blue Pill"
The "Blue Pill" is a popular development board with an STM32F103C8
micro controller. According to sources, it has a 128kB Flash on board
even though the option bytes only report 64kB. This patch therefore also
modifies target/stm32f1x.cfg to take an optional FLASH_SIZE variable into
account which the board file sets to 0x20000.
Change-Id: I8a78ccd2b5faf637c539ee3cf8136789ee15c95d
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/4495
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
| -rw-r--r-- | tcl/board/stm32f103c8_blue_pill.cfg | 14 | ||||
| -rw-r--r-- | tcl/target/stm32f1x.cfg | 10 |
2 files changed, 23 insertions, 1 deletions
diff --git a/tcl/board/stm32f103c8_blue_pill.cfg b/tcl/board/stm32f103c8_blue_pill.cfg new file mode 100644 index 0000000..2487f35 --- /dev/null +++ b/tcl/board/stm32f103c8_blue_pill.cfg @@ -0,0 +1,14 @@ +# STM32F103C8 "Blue Pill" + +# NOTE: +# There is a fair bit of confusion about whether the "Blue Pill" has 128kB or 64kB flash size. +# The most likely cause is that there exist a -C8 and a -CB variant of the STM32F103, where +# the C8 has 64kB, the CB has 128kB as per specification. "Blue Pill" boards are manufactured +# by a lot of different vendors, some may actually use the CB variant but from a cursory look +# it very hard to tell them apart ("C8" and "CB" look very similar). Nevertheless, people have +# tried using the full 128kB of flash on the C8 and found it to be working. Hence this board file +# overrides the internal size detection. Be aware though that you may be using you particular +# board outside of its specification. If in doubt, comment the following line. +set FLASH_SIZE 0x20000 + +source [find target/stm32f1x.cfg] diff --git a/tcl/target/stm32f1x.cfg b/tcl/target/stm32f1x.cfg index e0f6ede..471878d 100644 --- a/tcl/target/stm32f1x.cfg +++ b/tcl/target/stm32f1x.cfg @@ -22,6 +22,14 @@ if { [info exists WORKAREASIZE] } { set _WORKAREASIZE 0x1000 } +# Allow overriding the Flash bank size +if { [info exists FLASH_SIZE] } { + set _FLASH_SIZE $FLASH_SIZE +} else { + # autodetect size + set _FLASH_SIZE 0 +} + #jtag scan chain if { [info exists CPUTAPID] } { set _CPUTAPID $CPUTAPID @@ -49,7 +57,7 @@ $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE # flash size will be probed set _FLASHNAME $_CHIPNAME.flash -flash bank $_FLASHNAME stm32f1x 0x08000000 0 0 0 $_TARGETNAME +flash bank $_FLASHNAME stm32f1x 0x08000000 $_FLASH_SIZE 0 0 $_TARGETNAME # JTAG speed should be <= F_CPU/6. F_CPU after reset is 8MHz, so use F_JTAG = 1MHz adapter_khz 1000 |