Magnus Lundin wrote:
> Hi
>
> The following patch is a first step towards support for sevaral AP in
> one dap.
>
> - Adds a apsel variable, corresponding to the corresponding field in the
> DP SELECT register, to the swjdap structure.
> - adds a function swjdp_apselect(swjdp_common_t *swjdp,u8 apsel) to set
> this variable.
> - adds two cortex_m3 interactive commands
> cortex_m3 dap #n Shows the contents of ROM/Debug base register
> and AP ID Register
> cortex_m3 apsel #n Configures to use AP #n in subsequent memory
> accesses.
>
> This should be a possible starting point to explore other debug
> configurations that the Cortex_M3
>
> Tested on STM32 with no problems found. I dont have any A8 hardware.
I tried to use the commands above with OMAP3 Cortex A8. Two questions:
- OMAP3 has (at least) two TAPs
> scan_chain
TapName | Enabled | IdCode Expected IrLen
IrCap IrMask Instr
---|--------------------|---------|------------|------------|------|------|------|---------
0 | omap3.cpu | Y | 0x00000000 | 0x0b6d602f | 0x04 |
0x01 | 0x00 | 0x0f
1 | omap3.jrc | Y | 0x0b7ae02f | 0x0b7ae02f | 0x06 |
0x01 | 0x0f | 0x3f
while 'omap3.cpu' is "Cortex A8" where I think above cortex_m3
commands should work with. How do I tell these commands which TAP to
deal with? I.e. how to select which TAP the DAP and AP commands to
work with?
- OpenOCD revision 1462 with the patch from this mail:
-- cut --
> cortex_m3 dap 0
invalid command name "cortex_m3_dap"
called at file "command.c", line 456
called at file "embedded:startup.tcl", line 89
called at file "embedded:startup.tcl", line 93
> cortex_m3 dap 1
invalid command name "cortex_m3_dap"
called at file "command.c", line 456
called at file "embedded:startup.tcl", line 89
called at file "embedded:startup.tcl", line 93
> cortex_m3 apsel 0
invalid command name "cortex_m3_apsel"
called at file "command.c", line 456
called at file "embedded:startup.tcl", line 89
called at file "embedded:startup.tcl", line 93
> cortex_m3 apsel 1
invalid command name "cortex_m3_apsel"
called at file "command.c", line 456
called at file "embedded:startup.tcl", line 89
called at file "embedded:startup.tcl", line 93
>
-- cut --
Any hint?
Many thanks and best regards
Dirk
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