Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 76 insertions, 0 deletions

diff --git a/arch/sparc/prom/init_32.c b/arch/sparc/prom/init_32.c
new file mode 100644
index 0000000000..d20470166c
--- /dev/null
+++ b/arch/sparc/prom/init_32.c
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * init.c:  Initialize internal variables used by the PROM
+ *          library functions.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+struct linux_romvec *romvec;
+EXPORT_SYMBOL(romvec);
+
+enum prom_major_version prom_vers;
+unsigned int prom_rev, prom_prev;
+
+/* The root node of the prom device tree. */
+phandle prom_root_node;
+EXPORT_SYMBOL(prom_root_node);
+
+/* Pointer to the device tree operations structure. */
+struct linux_nodeops *prom_nodeops;
+
+/* You must call prom_init() before you attempt to use any of the
+ * routines in the prom library.
+ * It gets passed the pointer to the PROM vector.
+ */
+
+void __init prom_init(struct linux_romvec *rp)
+{
+	romvec = rp;
+
+	switch(romvec->pv_romvers) {
+	case 0:
+		prom_vers = PROM_V0;
+		break;
+	case 2:
+		prom_vers = PROM_V2;
+		break;
+	case 3:
+		prom_vers = PROM_V3;
+		break;
+	default:
+		prom_printf("PROMLIB: Bad PROM version %d\n",
+			    romvec->pv_romvers);
+		prom_halt();
+		break;
+	}
+
+	prom_rev = romvec->pv_plugin_revision;
+	prom_prev = romvec->pv_printrev;
+	prom_nodeops = romvec->pv_nodeops;
+
+	prom_root_node = prom_getsibling(0);
+	if ((prom_root_node == 0) || ((s32)prom_root_node == -1))
+		prom_halt();
+
+	if((((unsigned long) prom_nodeops) == 0) || 
+	   (((unsigned long) prom_nodeops) == -1))
+		prom_halt();
+
+	prom_meminit();
+
+	prom_ranges_init();
+
+	printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
+	       romvec->pv_romvers, prom_rev);
+
+	/* Initialization successful. */
+}