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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-09-19 17:44:59 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-09-20 16:09:54 +1000 |
| commit | daea1175a9f0f70eab5b33e2827d57ba8c686816 (patch) | |
| tree | aac48bd8bdfb9c7ee8e3e5058aea07e04e105da3 /arch/powerpc/include/asm | |
| parent | powerpc/powernv: Add support for instanciating OPAL v2 from Open Firmware (diff) | |
| download | linux-dev-daea1175a9f0f70eab5b33e2827d57ba8c686816.tar.xz linux-dev-daea1175a9f0f70eab5b33e2827d57ba8c686816.zip | |
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')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 5 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/udbg.h | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index c7a3202d10a0..749de00a02d5 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 */ diff --git a/arch/powerpc/include/asm/udbg.h b/arch/powerpc/include/asm/udbg.h index 7cf796fa03f2..6587ec7bc6ec 100644 --- a/arch/powerpc/include/asm/udbg.h +++ b/arch/powerpc/include/asm/udbg.h @@ -55,6 +55,8 @@ extern void __init udbg_init_cpm(void); extern void __init udbg_init_usbgecko(void); extern void __init udbg_init_wsp(void); extern void __init udbg_init_ps3gelic(void); +extern void __init udbg_init_debug_opal_raw(void); +extern void __init udbg_init_debug_opal_hvsi(void); #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_UDBG_H */ |