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usbdebug: Quirk for board aopen/dxplplusu 

This ancient board with Intel e7505 invalidates cache while it does HW
scrubbing for ECC in romstage. This breaks usbdebug console and prevents
system from booting.

If both EARLY_CONSOLE and USBDEBUG are selected, skip ECC scrubbing under
these rare conditions to boot system.

Change-Id: I6cb43bf69af54119f4a582dcaf498dd941d4c62d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3385
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Kyösti Mälkki 2013-06-06 10:39:48 +03:00 committed by Ronald G. Minnich
parent 5272a5feb7
commit b7d7cfbb30
1 changed files with 2 additions and 0 deletions
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2
src/mainboard/aopen/dxplplusu/romstage.c
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@ -70,8 +70,10 @@ void main(unsigned long bist)
* scrub_ecc() are recovered to stack via xmm0-xmm3.
*/
#if CONFIG_HW_SCRUBBER
#if ! ( CONFIG_USBDEBUG && CONFIG_EARLY_CONSOLE )
unsigned long ret_addr = (unsigned long)((unsigned long*)&bist - 1);
e7505_mch_scrub_ecc(ret_addr);
#endif
#endif
/* Hook for post ECC scrub settings and debug. */