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 
31 struct 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  */
41 static __initdata struct hypertas_fw_feature
42 hypertas_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  */
72 void __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 
105 struct vec5_fw_feature {
106 	unsigned long	val;
107 	unsigned int	feature;
108 };
109 
110 static __initdata struct vec5_fw_feature
111 vec5_fw_features_table[] = {
112 	{FW_FEATURE_TYPE1_AFFINITY,	OV5_TYPE1_AFFINITY},
113 	{FW_FEATURE_PRRN,		OV5_PRRN},
114 };
115 
116 void __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