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authorDavid S. Miller <davem@sunset.davemloft.net>2007-07-20 16:59:26 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-20 16:59:26 -0700
commitc73fcc846c91f53fd2c67fd9c6c04888a9e5892e (patch)
tree31faa68b4176636756926535a0f50ff780973275 /include/asm-sparc
parentede13d81b4dda409a6d271b34b8e2ec9383e255d (diff)
downloadop-kernel-dev-c73fcc846c91f53fd2c67fd9c6c04888a9e5892e.zip
op-kernel-dev-c73fcc846c91f53fd2c67fd9c6c04888a9e5892e.tar.gz
[SPARC]: Fix serial console device detection.
The current scheme works on static interpretation of text names, which is wrong. The output-device setting, for example, must be resolved via an alias or similar to a full path name to the console device. Paths also contain an optional set of 'options', which starts with a colon at the end of the path. The option area is used to specify which of two serial ports ('a' or 'b') the path refers to when a device node drives multiple ports. 'a' is assumed if the option specification is missing. This was caught by the UltraSPARC-T1 simulator. The 'output-device' property was set to 'ttya' and we didn't pick upon the fact that this is an OBP alias set to '/virtual-devices/console'. Instead we saw it as the first serial console device, instead of the hypervisor console. The infrastructure is now there to take advantage of this to resolve the console correctly even in multi-head situations in fbcon too. Thanks to Greg Onufer for the bug report. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc')
-rw-r--r--include/asm-sparc/oplib.h26
-rw-r--r--include/asm-sparc/prom.h4
2 files changed, 4 insertions, 26 deletions
diff --git a/include/asm-sparc/oplib.h b/include/asm-sparc/oplib.h
index 91691e5..17ba82ee 100644
--- a/include/asm-sparc/oplib.h
+++ b/include/asm-sparc/oplib.h
@@ -158,32 +158,6 @@ extern void prom_putchar(char character);
extern void prom_printf(char *fmt, ...);
extern void prom_write(const char *buf, unsigned int len);
-/* Query for input device type */
-
-enum prom_input_device {
- PROMDEV_IKBD, /* input from keyboard */
- PROMDEV_ITTYA, /* input from ttya */
- PROMDEV_ITTYB, /* input from ttyb */
- PROMDEV_IRSC, /* input from rsc */
- PROMDEV_IVCONS, /* input from virtual-console */
- PROMDEV_I_UNK,
-};
-
-extern enum prom_input_device prom_query_input_device(void);
-
-/* Query for output device type */
-
-enum prom_output_device {
- PROMDEV_OSCREEN, /* to screen */
- PROMDEV_OTTYA, /* to ttya */
- PROMDEV_OTTYB, /* to ttyb */
- PROMDEV_ORSC, /* to rsc */
- PROMDEV_OVCONS, /* to virtual-console */
- PROMDEV_O_UNK,
-};
-
-extern enum prom_output_device prom_query_output_device(void);
-
/* Multiprocessor operations... */
/* Start the CPU with the given device tree node, context table, and context
diff --git a/include/asm-sparc/prom.h b/include/asm-sparc/prom.h
index db9feb7..350676c 100644
--- a/include/asm-sparc/prom.h
+++ b/include/asm-sparc/prom.h
@@ -85,5 +85,9 @@ static inline void of_node_put(struct device_node *node)
*/
#include <linux/of.h>
+extern struct device_node *of_console_device;
+extern char *of_console_path;
+extern char *of_console_options;
+
#endif /* __KERNEL__ */
#endif /* _SPARC_PROM_H */
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