1 files changed, 103 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
new file mode 100644
index 000000000000..c01d8f0cbe6d
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -0,0 +1,103 @@
+/*
+ *  pSeries firmware setup code.
+ *
+ *  Portions from arch/powerpc/platforms/pseries/setup.c:
+ *   Copyright (C) 1995  Linus Torvalds
+ *   Adapted from 'alpha' version by Gary Thomas
+ *   Modified by Cort Dougan (cort@cs.nmt.edu)
+ *   Modified by PPC64 Team, IBM Corp
+ *
+ *  Portions from arch/powerpc/kernel/firmware.c
+ *   Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *   Modifications for ppc64:
+ *    Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
+ *    Copyright (C) 2005 Stephen Rothwell, IBM Corporation
+ *
+ *  Copyright 2006 IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#undef DEBUG
+
+#include <asm/firmware.h>
+#include <asm/prom.h>
+
+#ifdef DEBUG
+#define DBG(fmt...) udbg_printf(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+typedef struct {
+    unsigned long val;
+    char * name;
+} firmware_feature_t;
+
+static __initdata firmware_feature_t
+firmware_features_table[FIRMWARE_MAX_FEATURES] = {
+	{FW_FEATURE_PFT,		"hcall-pft"},
+	{FW_FEATURE_TCE,		"hcall-tce"},
+	{FW_FEATURE_SPRG0,		"hcall-sprg0"},
+	{FW_FEATURE_DABR,		"hcall-dabr"},
+	{FW_FEATURE_COPY,		"hcall-copy"},
+	{FW_FEATURE_ASR,		"hcall-asr"},
+	{FW_FEATURE_DEBUG,		"hcall-debug"},
+	{FW_FEATURE_PERF,		"hcall-perf"},
+	{FW_FEATURE_DUMP,		"hcall-dump"},
+	{FW_FEATURE_INTERRUPT,		"hcall-interrupt"},
+	{FW_FEATURE_MIGRATE,		"hcall-migrate"},
+	{FW_FEATURE_PERFMON,		"hcall-perfmon"},
+	{FW_FEATURE_CRQ,		"hcall-crq"},
+	{FW_FEATURE_VIO,		"hcall-vio"},
+	{FW_FEATURE_RDMA,		"hcall-rdma"},
+	{FW_FEATURE_LLAN,		"hcall-lLAN"},
+	{FW_FEATURE_BULK,		"hcall-bulk"},
+	{FW_FEATURE_XDABR,		"hcall-xdabr"},
+	{FW_FEATURE_MULTITCE,		"hcall-multi-tce"},
+	{FW_FEATURE_SPLPAR,		"hcall-splpar"},
+};
+
+/* Build up the firmware features bitmask using the contents of
+ * device-tree/ibm,hypertas-functions.  Ultimately this functionality may
+ * be moved into prom.c prom_init().
+ */
+void __init fw_feature_init(void)
+{
+	struct device_node *dn;
+	char *hypertas, *s;
+	int len, i;
+
+	DBG(" -> fw_feature_init()\n");
+
+	dn = of_find_node_by_path("/rtas");
+	if (dn == NULL) {
+		printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n");
+		goto out;
+	}
+
+	hypertas = get_property(dn, "ibm,hypertas-functions", &len);
+	if (hypertas == NULL)
+		goto out;
+
+	for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) {
+		for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) {
+			/* check value against table of strings */
+			if (!firmware_features_table[i].name ||
+			    strcmp(firmware_features_table[i].name, s))
+				continue;
+
+			/* we have a match */
+			powerpc_firmware_features |=
+				firmware_features_table[i].val;
+			break;
+		}
+	}
+
+out:
+	of_node_put(dn);
+	DBG(" <- fw_feature_init()\n");
+}