diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2007-05-07 22:59:31 -0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-08 00:47:33 -0400 |
| commit | d9b55a03611ff2e2e54fb4e1ad2648d5eb870fa3 (patch) | |
| tree | 5704be539afcd6f29b1f5751476c8b4f53673bff /arch/powerpc/platforms/44x/44x.h | |
| parent | f6dfc80554b27da11dbb36ebae166b23ec3aa9ca (diff) | |
[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 'arch/powerpc/platforms/44x/44x.h')
| -rw-r--r-- | arch/powerpc/platforms/44x/44x.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/44x.h b/arch/powerpc/platforms/44x/44x.h index 45f24b166f4d..42eabf87fea3 100644 --- a/arch/powerpc/platforms/44x/44x.h +++ b/arch/powerpc/platforms/44x/44x.h | |||
| @@ -1,6 +1,8 @@ | |||
| 1 | #ifndef __POWERPC_PLATFORMS_44X_44X_H | 1 | #ifndef __POWERPC_PLATFORMS_44X_44X_H |
| 2 | #define __POWERPC_PLATFORMS_44X_44X_H | 2 | #define __POWERPC_PLATFORMS_44X_44X_H |
| 3 | 3 | ||
| 4 | extern u8 as1_readb(volatile u8 __iomem *addr); | ||
| 5 | extern void as1_writeb(u8 data, volatile u8 __iomem *addr); | ||
| 4 | extern void ppc44x_reset_system(char *cmd); | 6 | extern void ppc44x_reset_system(char *cmd); |
| 5 | 7 | ||
| 6 | #endif /* __POWERPC_PLATFORMS_44X_44X_H */ | 8 | #endif /* __POWERPC_PLATFORMS_44X_44X_H */ |