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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-09-19 17:44:59 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-09-20 16:09:54 +1000
commitdaea1175a9f0f70eab5b33e2827d57ba8c686816 (patch)
treeaac48bd8bdfb9c7ee8e3e5058aea07e04e105da3 /arch/powerpc/include/asm/opal.h
parent6e35d5dac0c83ebb616ff3b9c2d6155c9a9ccb86 (diff)
downloadvexpress-lsk-daea1175a9f0f70eab5b33e2827d57ba8c686816.tar.gz
powerpc/powernv: Support for OPAL console
This adds a udbg and an hvc console backend for supporting a console using the OPAL console interfaces. On OPAL v1 we have hvc0 mapped to whatever console the system was configured for (network or hvsi serial port) via the service processor. On OPAL v2 we have hvcN mapped to the Nth console provided by OPAL which generally corresponds to: hvc0 : network console (raw protocol) hvc1 : serial port S1 (hvsi) hvc2 : serial port S2 (hvsi) Note: At this point, early debug console only works with OPAL v1 and shouldn't be enabled in a normal kernel. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
-rw-r--r--arch/powerpc/include/asm/opal.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index c7a3202d10a..749de00a02d 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -425,6 +425,11 @@ extern void hvc_opal_init_early(void);
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
int depth, void *data);
+extern int opal_get_chars(uint32_t vtermno, char *buf, int count);
+extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len);
+
+extern void hvc_opal_init_early(void);
+
#endif /* __ASSEMBLY__ */
#endif /* __OPAL_H */