1/*
2 *  pSeries firmware setup code.
3 *
4 *  Portions from arch/powerpc/platforms/pseries/setup.c:
5 *   Copyright (C) 1995  Linus Torvalds
6 *   Adapted from 'alpha' version by Gary Thomas
7 *   Modified by Cort Dougan (cort@cs.nmt.edu)
8 *   Modified by PPC64 Team, IBM Corp
9 *
10 *  Portions from arch/powerpc/kernel/firmware.c
11 *   Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
12 *   Modifications for ppc64:
13 *    Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
14 *    Copyright (C) 2005 Stephen Rothwell, IBM Corporation
15 *
16 *  Copyright 2006 IBM Corporation.
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License
20 * as published by the Free Software Foundation; either version
21 * 2 of the License, or (at your option) any later version.
22 */
23
24
25#include <asm/firmware.h>
26#include <asm/prom.h>
27#include <asm/udbg.h>
28
29#include "pseries.h"
30
31struct hypertas_fw_feature {
32    unsigned long val;
33    char * name;
34};
35
36/*
37 * The names in this table match names in rtas/ibm,hypertas-functions.  If the
38 * entry ends in a '*', only upto the '*' is matched.  Otherwise the entire
39 * string must match.
40 */
41static __initdata struct hypertas_fw_feature
42hypertas_fw_features_table[] = {
43	{FW_FEATURE_PFT,		"hcall-pft"},
44	{FW_FEATURE_TCE,		"hcall-tce"},
45	{FW_FEATURE_SPRG0,		"hcall-sprg0"},
46	{FW_FEATURE_DABR,		"hcall-dabr"},
47	{FW_FEATURE_COPY,		"hcall-copy"},
48	{FW_FEATURE_ASR,		"hcall-asr"},
49	{FW_FEATURE_DEBUG,		"hcall-debug"},
50	{FW_FEATURE_PERF,		"hcall-perf"},
51	{FW_FEATURE_DUMP,		"hcall-dump"},
52	{FW_FEATURE_INTERRUPT,		"hcall-interrupt"},
53	{FW_FEATURE_MIGRATE,		"hcall-migrate"},
54	{FW_FEATURE_PERFMON,		"hcall-perfmon"},
55	{FW_FEATURE_CRQ,		"hcall-crq"},
56	{FW_FEATURE_VIO,		"hcall-vio"},
57	{FW_FEATURE_RDMA,		"hcall-rdma"},
58	{FW_FEATURE_LLAN,		"hcall-lLAN"},
59	{FW_FEATURE_BULK_REMOVE,	"hcall-bulk"},
60	{FW_FEATURE_XDABR,		"hcall-xdabr"},
61	{FW_FEATURE_MULTITCE,		"hcall-multi-tce"},
62	{FW_FEATURE_SPLPAR,		"hcall-splpar"},
63	{FW_FEATURE_VPHN,		"hcall-vphn"},
64	{FW_FEATURE_SET_MODE,		"hcall-set-mode"},
65	{FW_FEATURE_BEST_ENERGY,	"hcall-best-energy-1*"},
66};
67
68/* Build up the firmware features bitmask using the contents of
69 * device-tree/ibm,hypertas-functions.  Ultimately this functionality may
70 * be moved into prom.c prom_init().
71 */
72void __init fw_hypertas_feature_init(const char *hypertas, unsigned long len)
73{
74	const char *s;
75	int i;
76
77	pr_debug(" -> fw_hypertas_feature_init()\n");
78
79	for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) {
80		for (i = 0; i < ARRAY_SIZE(hypertas_fw_features_table); i++) {
81			const char *name = hypertas_fw_features_table[i].name;
82			size_t size;
83
84			/*
85			 * If there is a '*' at the end of name, only check
86			 * upto there
87			 */
88			size = strlen(name);
89			if (size && name[size - 1] == '*') {
90				if (strncmp(name, s, size - 1))
91					continue;
92			} else if (strcmp(name, s))
93				continue;
94
95			/* we have a match */
96			powerpc_firmware_features |=
97				hypertas_fw_features_table[i].val;
98			break;
99		}
100	}
101
102	pr_debug(" <- fw_hypertas_feature_init()\n");
103}
104
105struct vec5_fw_feature {
106	unsigned long	val;
107	unsigned int	feature;
108};
109
110static __initdata struct vec5_fw_feature
111vec5_fw_features_table[] = {
112	{FW_FEATURE_TYPE1_AFFINITY,	OV5_TYPE1_AFFINITY},
113	{FW_FEATURE_PRRN,		OV5_PRRN},
114};
115
116void __init fw_vec5_feature_init(const char *vec5, unsigned long len)
117{
118	unsigned int index, feat;
119	int i;
120
121	pr_debug(" -> fw_vec5_feature_init()\n");
122
123	for (i = 0; i < ARRAY_SIZE(vec5_fw_features_table); i++) {
124		index = OV5_INDX(vec5_fw_features_table[i].feature);
125		feat = OV5_FEAT(vec5_fw_features_table[i].feature);
126
127		if (vec5[index] & feat)
128			powerpc_firmware_features |=
129				vec5_fw_features_table[i].val;
130	}
131
132	pr_debug(" <- fw_vec5_feature_init()\n");
133}
134