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1965746b ME |
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 | #undef DEBUG | |
25 | ||
26 | #include <asm/firmware.h> | |
27 | #include <asm/prom.h> | |
28 | ||
29 | #ifdef DEBUG | |
30 | #define DBG(fmt...) udbg_printf(fmt) | |
31 | #else | |
32 | #define DBG(fmt...) | |
33 | #endif | |
34 | ||
35 | typedef struct { | |
36 | unsigned long val; | |
37 | char * name; | |
38 | } firmware_feature_t; | |
39 | ||
40 | static __initdata firmware_feature_t | |
41 | firmware_features_table[FIRMWARE_MAX_FEATURES] = { | |
42 | {FW_FEATURE_PFT, "hcall-pft"}, | |
43 | {FW_FEATURE_TCE, "hcall-tce"}, | |
44 | {FW_FEATURE_SPRG0, "hcall-sprg0"}, | |
45 | {FW_FEATURE_DABR, "hcall-dabr"}, | |
46 | {FW_FEATURE_COPY, "hcall-copy"}, | |
47 | {FW_FEATURE_ASR, "hcall-asr"}, | |
48 | {FW_FEATURE_DEBUG, "hcall-debug"}, | |
49 | {FW_FEATURE_PERF, "hcall-perf"}, | |
50 | {FW_FEATURE_DUMP, "hcall-dump"}, | |
51 | {FW_FEATURE_INTERRUPT, "hcall-interrupt"}, | |
52 | {FW_FEATURE_MIGRATE, "hcall-migrate"}, | |
53 | {FW_FEATURE_PERFMON, "hcall-perfmon"}, | |
54 | {FW_FEATURE_CRQ, "hcall-crq"}, | |
55 | {FW_FEATURE_VIO, "hcall-vio"}, | |
56 | {FW_FEATURE_RDMA, "hcall-rdma"}, | |
57 | {FW_FEATURE_LLAN, "hcall-lLAN"}, | |
58 | {FW_FEATURE_BULK, "hcall-bulk"}, | |
59 | {FW_FEATURE_XDABR, "hcall-xdabr"}, | |
60 | {FW_FEATURE_MULTITCE, "hcall-multi-tce"}, | |
61 | {FW_FEATURE_SPLPAR, "hcall-splpar"}, | |
12e86f92 | 62 | {FW_FEATURE_BULK_REMOVE, "hcall-bulk"}, |
1965746b ME |
63 | }; |
64 | ||
65 | /* Build up the firmware features bitmask using the contents of | |
66 | * device-tree/ibm,hypertas-functions. Ultimately this functionality may | |
67 | * be moved into prom.c prom_init(). | |
68 | */ | |
69 | void __init fw_feature_init(void) | |
70 | { | |
71 | struct device_node *dn; | |
954a46e2 | 72 | const char *hypertas, *s; |
1965746b ME |
73 | int len, i; |
74 | ||
75 | DBG(" -> fw_feature_init()\n"); | |
76 | ||
77 | dn = of_find_node_by_path("/rtas"); | |
78 | if (dn == NULL) { | |
79 | printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n"); | |
80 | goto out; | |
81 | } | |
82 | ||
e2eb6392 | 83 | hypertas = of_get_property(dn, "ibm,hypertas-functions", &len); |
1965746b ME |
84 | if (hypertas == NULL) |
85 | goto out; | |
86 | ||
87 | for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) { | |
88 | for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) { | |
89 | /* check value against table of strings */ | |
90 | if (!firmware_features_table[i].name || | |
91 | strcmp(firmware_features_table[i].name, s)) | |
92 | continue; | |
93 | ||
94 | /* we have a match */ | |
d0160bf0 | 95 | powerpc_firmware_features |= |
1965746b ME |
96 | firmware_features_table[i].val; |
97 | break; | |
98 | } | |
99 | } | |
100 | ||
101 | out: | |
102 | of_node_put(dn); | |
103 | DBG(" <- fw_feature_init()\n"); | |
104 | } |