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authorMike Travis <travis@sgi.com>2008-12-31 17:34:16 -0800
committerIngo Molnar <mingo@elte.hu>2009-01-03 18:53:31 +0100
commit7eb19553369c46cc1fa64caf120cbcab1b597f7c (patch)
treeef1a3beae706b9497c845d0a2557ceb4d2754998 /arch/sparc/prom/misc_32.c
parent6092848a2a23b660150a38bc06f59d75838d70c8 (diff)
parent8c384cdee3e04d6194a2c2b192b624754f990835 (diff)
downloadlinux-7eb19553369c46cc1fa64caf120cbcab1b597f7c.tar.bz2
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask
Conflicts: arch/x86/kernel/io_apic.c kernel/rcuclassic.c kernel/sched.c kernel/time/tick-sched.c Signed-off-by: Mike Travis <travis@sgi.com> [ mingo@elte.hu: backmerged typo fix for io_apic.c ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sparc/prom/misc_32.c')
-rw-r--r--arch/sparc/prom/misc_32.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/arch/sparc/prom/misc_32.c b/arch/sparc/prom/misc_32.c
new file mode 100644
index 000000000000..cf6c3f6d36c3
--- /dev/null
+++ b/arch/sparc/prom/misc_32.c
@@ -0,0 +1,129 @@
+/*
+ * misc.c: Miscellaneous prom functions that don't belong
+ * anywhere else.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.h>
+#include <asm/system.h>
+
+extern void restore_current(void);
+
+DEFINE_SPINLOCK(prom_lock);
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void
+prom_reboot(char *bcommand)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&prom_lock, flags);
+ (*(romvec->pv_reboot))(bcommand);
+ /* Never get here. */
+ restore_current();
+ spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void
+prom_feval(char *fstring)
+{
+ unsigned long flags;
+ if(!fstring || fstring[0] == 0)
+ return;
+ spin_lock_irqsave(&prom_lock, flags);
+ if(prom_vers == PROM_V0)
+ (*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);
+ else
+ (*(romvec->pv_fortheval.v2_eval))(fstring);
+ restore_current();
+ spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+ extern void install_obp_ticker(void);
+ extern void install_linux_ticker(void);
+ unsigned long flags;
+
+ spin_lock_irqsave(&prom_lock, flags);
+ install_obp_ticker();
+ (*(romvec->pv_abort))();
+ restore_current();
+ install_linux_ticker();
+ spin_unlock_irqrestore(&prom_lock, flags);
+ set_auxio(AUXIO_LED, 0);
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void
+prom_halt(void)
+{
+ unsigned long flags;
+again:
+ spin_lock_irqsave(&prom_lock, flags);
+ (*(romvec->pv_halt))();
+ /* Never get here. */
+ restore_current();
+ spin_unlock_irqrestore(&prom_lock, flags);
+ goto again; /* PROM is out to get me -DaveM */
+}
+
+typedef void (*sfunc_t)(void);
+
+/* Set prom sync handler to call function 'funcp'. */
+void
+prom_setsync(sfunc_t funcp)
+{
+ if(!funcp) return;
+ *romvec->pv_synchook = funcp;
+}
+
+/* Get the idprom and stuff it into buffer 'idbuf'. Returns the
+ * format type. 'num_bytes' is the number of bytes that your idbuf
+ * has space for. Returns 0xff on error.
+ */
+unsigned char
+prom_get_idprom(char *idbuf, int num_bytes)
+{
+ int len;
+
+ len = prom_getproplen(prom_root_node, "idprom");
+ if((len>num_bytes) || (len==-1)) return 0xff;
+ if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
+ return idbuf[0];
+
+ return 0xff;
+}
+
+/* Get the major prom version number. */
+int
+prom_version(void)
+{
+ return romvec->pv_romvers;
+}
+
+/* Get the prom plugin-revision. */
+int
+prom_getrev(void)
+{
+ return prom_rev;
+}
+
+/* Get the prom firmware print revision. */
+int
+prom_getprev(void)
+{
+ return prom_prev;
+}