A7/S5L8960 swd only working partially
Opened this issue · 3 comments
Not sure if this issue belongs here or the bonobo configs repo, don't have a bonobo cable to test this with.
I'm using an iPhone 5s (N53, iphone6,2) and it seems like jtag/swd debugging only works partially.
If I connect openocd with the unmodified s5l8960x config, the phone instantly shows the apple logo and starts booting up.
I figured out that if I remove the 2nd core from the config, leaving only the first in place, openocd kind of works.
I can read memory, step inside assembly but breakpoints and watchpoints seem to be just broken.
Setting a breakpoint "works" but they never get hit, seems like they are just ignored.
Setting a watchpoint (awatch) makes stepping or continuing not work returning this:
(gdb) si
Warning:
Could not insert hardware watchpoint 1.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.
Command aborted.
Anyone else experiencing these problems on A7?
Would be great if breakpoints/watchpoints worked along with the 2nd core.
Already had that issue with A9 and the bonobo cable.
Make the "dbgwrap"-variable use uint32_t and the write that uses the "dbgwrap"-variable use a sizeof uint32_t instead uint64_t.
That fixed it for me on both cables.
Super interesting, thanks @chris-pcguy - I don't have a device to test with unfrotunately but would love to add a patch for this
Hi @VDavid003, I'm having your same problem. At the end did you have full working openocd on S5L8960? If yes how did you do?
Thanks in advance for you answer!