Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 128 insertions, 0 deletions

diff --git a/arch/sparc/prom/misc_32.c b/arch/sparc/prom/misc_32.c
new file mode 100644
index 000000000..625750924
--- /dev/null
+++ b/arch/sparc/prom/misc_32.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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 <linux/module.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.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);
+}
+EXPORT_SYMBOL(prom_feval);
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_abort))();
+	restore_current();
+	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 __noreturn
+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;
+}