Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/m68k/sun3/prom/misc.c b/arch/m68k/sun3/prom/misc.c
new file mode 100644
index 000000000..b8c95940d
--- /dev/null
+++ b/arch/m68k/sun3/prom/misc.c
@@ -0,0 +1,95 @@
+// 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 <asm/sun3-head.h>
+#include <asm/idprom.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/movs.h>
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void
+prom_reboot(char *bcommand)
+{
+	unsigned long flags;
+	local_irq_save(flags);
+	(*(romvec->pv_reboot))(bcommand);
+	local_irq_restore(flags);
+}
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void
+prom_halt(void)
+{
+	unsigned long flags;
+again:
+	local_irq_save(flags);
+	(*(romvec->pv_halt))();
+	local_irq_restore(flags);
+	goto again; /* PROM is out to get me -DaveM */
+}
+
+typedef void (*sfunc_t)(void);
+
+/* 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 i, oldsfc;
+	GET_SFC(oldsfc);
+	SET_SFC(FC_CONTROL);
+	for(i=0;i<num_bytes; i++)
+	{
+		/* There is a problem with the GET_CONTROL_BYTE
+		macro; defining the extra variable
+		gets around it.
+		*/
+		int c;
+		GET_CONTROL_BYTE(SUN3_IDPROM_BASE + i, c);
+		idbuf[i] = c;
+	}
+	SET_SFC(oldsfc);
+	return idbuf[0];
+}
+
+/* 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;
+}