[POWERPC] Early serial debug support for PPC44x

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This adds support for early serial debugging via the built in
port on IBM/AMCC PowerPC 44x CPUs.  It uses a bolted TLB entry in
address space 1 for the UART's mapping, allowing robust debugging both
before and after the initialization of the MMU.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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David Gibson 2007-05-08 12:59:31 +10:00 • committed by Paul Mackerras

parent f6dfc80554

commit d9b55a0361

9 changed files with 97 additions and 26 deletions

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6

include/asm-powerpc/mmu-44x.h

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1

include/asm-powerpc/udbg.h

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