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 */
fw_hypertas_feature_init(const char * hypertas,unsigned long len)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
fw_vec5_feature_init(const char * vec5,unsigned long len)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