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arm_adi_v5: make dap_lookup_cs_component() traverse subtables and handle multicore

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When looking for a debug base address of a core, one should search
through all the ROM tables, not just the top-level one.

This code also assumes that the first found entry (in a depth-first
search) will correspond to core 0, the second to core 1 etc.

The patch is supposed to be an alternative implementation of
http://openocd.zylin.com/#/c/1313/.

Change-Id: Ifc88971a02fe3d9c00d9bf72a822ade5804d4e09
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1920
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Paul Fertser
2014-02-03 01:19:00 +04:00
committed by Spencer Oliver
parent 9c47dc9e8e
commit ec9ccaa288
3 changed files with 35 additions and 8 deletions
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7
src/target/cortex_a.c
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@@ -2393,14 +2393,19 @@ static int cortex_a_examine_first(struct target *target)
uint32_t dbgbase;
/* Get ROM Table base */
uint32_t apid;
int32_t coreidx = target->coreid;
LOG_DEBUG("%s's dbgbase is not set, trying to detect using the ROM table",
target->cmd_name);
retval = dap_get_debugbase(swjdp, 1, &dbgbase, &apid);
if (retval != ERROR_OK)
return retval;
/* Lookup 0x15 -- Processor DAP */
retval = dap_lookup_cs_component(swjdp, 1, dbgbase, 0x15,
&armv7a->debug_base);
&armv7a->debug_base, &coreidx);
if (retval != ERROR_OK)
return retval;
LOG_DEBUG("Detected core %" PRId32 " dbgbase: %08" PRIx32,
coreidx, armv7a->debug_base);
} else
armv7a->debug_base = target->dbgbase;