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-rw-r--r--arch/sparc/prom/init_32.c76
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. */
+}