diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2007-05-08 04:59:31 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-08 06:47:33 +0200 |
| commit | d9b55a03611ff2e2e54fb4e1ad2648d5eb870fa3 (patch) | |
| tree | 5704be539afcd6f29b1f5751476c8b4f53673bff /include/asm-powerpc/mmu-44x.h | |
| parent | [POWERPC] Support for the Ebony 440GP reference board in arch/powerpc (diff) | |
| download | linux-d9b55a03611ff2e2e54fb4e1ad2648d5eb870fa3.tar.xz linux-d9b55a03611ff2e2e54fb4e1ad2648d5eb870fa3.zip | |
[POWERPC] Early serial debug support for PPC44x
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>
Diffstat (limited to 'include/asm-powerpc/mmu-44x.h')
| -rw-r--r-- | include/asm-powerpc/mmu-44x.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-powerpc/mmu-44x.h b/include/asm-powerpc/mmu-44x.h index 7bbc37e27d3c..d5ce7a8dfe9f 100644 --- a/include/asm-powerpc/mmu-44x.h +++ b/include/asm-powerpc/mmu-44x.h @@ -64,7 +64,13 @@ typedef struct { #endif /* !__ASSEMBLY__ */ +#ifndef CONFIG_PPC_EARLY_DEBUG_44x #define PPC44x_EARLY_TLBS 1 +#else +#define PPC44x_EARLY_TLBS 2 +#define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \ + | (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff)) +#endif /* Size of the TLBs used for pinning in lowmem */ #define PPC_PIN_SIZE (1 << 28) /* 256M */ |