diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /arch/sparc/prom | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'arch/sparc/prom')
| -rw-r--r-- | arch/sparc/prom/segment.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/sparc/prom/segment.c b/arch/sparc/prom/segment.c new file mode 100644 index 00000000000..86a663f1d3c --- /dev/null +++ b/arch/sparc/prom/segment.c | |||
| @@ -0,0 +1,28 @@ | |||
| 1 | /* | ||
| 2 | * segment.c: Prom routine to map segments in other contexts before | ||
| 3 | * a standalone is completely mapped. This is for sun4 and | ||
| 4 | * sun4c architectures only. | ||
| 5 | * | ||
| 6 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | ||
| 7 | */ | ||
| 8 | |||
| 9 | #include <linux/types.h> | ||
| 10 | #include <linux/kernel.h> | ||
| 11 | #include <linux/sched.h> | ||
| 12 | #include <asm/openprom.h> | ||
| 13 | #include <asm/oplib.h> | ||
| 14 | |||
| 15 | extern void restore_current(void); | ||
| 16 | |||
| 17 | /* Set physical segment 'segment' at virtual address 'vaddr' in | ||
| 18 | * context 'ctx'. | ||
| 19 | */ | ||
| 20 | void | ||
| 21 | prom_putsegment(int ctx, unsigned long vaddr, int segment) | ||
| 22 | { | ||
| 23 | unsigned long flags; | ||
| 24 | spin_lock_irqsave(&prom_lock, flags); | ||
| 25 | (*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment); | ||
| 26 | restore_current(); | ||
| 27 | spin_unlock_irqrestore(&prom_lock, flags); | ||
| 28 | } | ||
