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[POWERPC] Setup RTAS values earlier, to enable rtas_call() earlier

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Althought RTAS is instantiated when we enter the kernel, we can't actually
call into it until we know its entry point address. Currently we grab that
in rtas_initialize(), however that's quite late in the boot sequence.

To enable rtas_call() earlier, we can grab the RTAS entry etc. values while
we're scanning the flattened device tree. There's existing code to retrieve
the values from /chosen, however we don't store them there anymore, so remove
that code.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2006-06-23 18:20:13 +10:00 • committed by Paul Mackerras
commit 458148c00b
3 changed files with 30 additions and 18 deletions
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3
include/asm-powerpc/rtas.h
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@ -181,6 +181,9 @@ extern int rtas_set_rtc_time(struct rtc_time *rtc_time);
extern unsigned int rtas_busy_delay_time(int status);
extern unsigned int rtas_busy_delay(int status);
extern int early_init_dt_scan_rtas(unsigned long node,
const char *uname, int depth, void *data);
extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
/* Error types logged. */