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 31typedef struct { 32 unsigned long val; 33 char * name; 34} firmware_feature_t; 35 36static __initdata firmware_feature_t 37firmware_features_table[FIRMWARE_MAX_FEATURES] = { 38 {FW_FEATURE_PFT, "hcall-pft"}, 39 {FW_FEATURE_TCE, "hcall-tce"}, 40 {FW_FEATURE_SPRG0, "hcall-sprg0"}, 41 {FW_FEATURE_DABR, "hcall-dabr"}, 42 {FW_FEATURE_COPY, "hcall-copy"}, 43 {FW_FEATURE_ASR, "hcall-asr"}, 44 {FW_FEATURE_DEBUG, "hcall-debug"}, 45 {FW_FEATURE_PERF, "hcall-perf"}, 46 {FW_FEATURE_DUMP, "hcall-dump"}, 47 {FW_FEATURE_INTERRUPT, "hcall-interrupt"}, 48 {FW_FEATURE_MIGRATE, "hcall-migrate"}, 49 {FW_FEATURE_PERFMON, "hcall-perfmon"}, 50 {FW_FEATURE_CRQ, "hcall-crq"}, 51 {FW_FEATURE_VIO, "hcall-vio"}, 52 {FW_FEATURE_RDMA, "hcall-rdma"}, 53 {FW_FEATURE_LLAN, "hcall-lLAN"}, 54 {FW_FEATURE_BULK_REMOVE, "hcall-bulk"}, 55 {FW_FEATURE_XDABR, "hcall-xdabr"}, 56 {FW_FEATURE_MULTITCE, "hcall-multi-tce"}, 57 {FW_FEATURE_SPLPAR, "hcall-splpar"}, 58}; 59 60/* Build up the firmware features bitmask using the contents of 61 * device-tree/ibm,hypertas-functions. Ultimately this functionality may 62 * be moved into prom.c prom_init(). 63 */ 64void __init fw_feature_init(const char *hypertas, unsigned long len) 65{ 66 const char *s; 67 int i; 68 69 pr_debug(" -> fw_feature_init()\n"); 70 71 for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) { 72 for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) { 73 /* check value against table of strings */ 74 if (!firmware_features_table[i].name || 75 strcmp(firmware_features_table[i].name, s)) 76 continue; 77 78 /* we have a match */ 79 powerpc_firmware_features |= 80 firmware_features_table[i].val; 81 break; 82 } 83 } 84 85 pr_debug(" <- fw_feature_init()\n"); 86} 87