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armv7m: add generic trace support (TPIU, ITM, etc.)

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This provides support for various trace-related subsystems in a
generic and expandable way.

Change-Id: I3a27fa7b8cfb111753088bb8c3d760dd12d1395f
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2538
Tested-by: jenkins
This commit is contained in:
Paul Fertser
2015-02-09 17:04:52 +03:00
committed by Spencer Oliver
parent 3e1dfdcb85
commit a09a75653d
17 changed files with 584 additions and 12 deletions
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src/jtag/drivers/stlink_usb.c
+4 -4
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@@ -1031,16 +1031,16 @@ static int stlink_configure_target_trace_port(void *handle)
if (res != ERROR_OK)
goto out;
/* set the TPI clock prescaler */
res = stlink_usb_write_debug_reg(handle, TPI_ACPR, h->trace.prescale);
res = stlink_usb_write_debug_reg(handle, TPIU_ACPR, h->trace.prescale);
if (res != ERROR_OK)
goto out;
/* select the pin protocol. The STLinkv2 only supports asynchronous
* UART emulation (NRZ) mode, so that's what we pick. */
res = stlink_usb_write_debug_reg(handle, TPI_SPPR, 0x02);
res = stlink_usb_write_debug_reg(handle, TPIU_SPPR, 0x02);
if (res != ERROR_OK)
goto out;
/* disable continuous formatting */
res = stlink_usb_write_debug_reg(handle, TPI_FFCR, (1<<8));
res = stlink_usb_write_debug_reg(handle, TPIU_FFCR, (1<<8));
if (res != ERROR_OK)
goto out;
@@ -1059,7 +1059,7 @@ static int stlink_configure_target_trace_port(void *handle)
if (res != ERROR_OK)
goto out;
/* trace port enable (port 0) */
res = stlink_usb_write_debug_reg(handle, ITM_TER, (1<<0));
res = stlink_usb_write_debug_reg(handle, ITM_TER0, (1<<0));
if (res != ERROR_OK)
goto out;