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 typedef struct { 32 unsigned long val; 33 char * name; 34 } firmware_feature_t; 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 firmware_feature_t 42 firmware_features_table[FIRMWARE_MAX_FEATURES] = { 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_feature_init(const char *hypertas, unsigned long len) 73 { 74 const char *s; 75 int i; 76 77 pr_debug(" -> fw_feature_init()\n"); 78 79 for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) { 80 for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) { 81 const char *name = firmware_features_table[i].name; 82 size_t size; 83 /* check value against table of strings */ 84 if (!name) 85 continue; 86 /* 87 * If there is a '*' at the end of name, only check 88 * upto there 89 */ 90 size = strlen(name); 91 if (size && name[size - 1] == '*') { 92 if (strncmp(name, s, size - 1)) 93 continue; 94 } else if (strcmp(name, s)) 95 continue; 96 97 /* we have a match */ 98 powerpc_firmware_features |= 99 firmware_features_table[i].val; 100 break; 101 } 102 } 103 104 pr_debug(" <- fw_feature_init()\n"); 105 } 106