| /* |
| * pSeries firmware setup code. |
| * |
| * Portions from arch/powerpc/platforms/pseries/setup.c: |
| * Copyright (C) 1995 Linus Torvalds |
| * Adapted from 'alpha' version by Gary Thomas |
| * Modified by Cort Dougan (cort@cs.nmt.edu) |
| * Modified by PPC64 Team, IBM Corp |
| * |
| * Portions from arch/powerpc/kernel/firmware.c |
| * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) |
| * Modifications for ppc64: |
| * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> |
| * Copyright (C) 2005 Stephen Rothwell, IBM Corporation |
| * |
| * Copyright 2006 IBM Corporation. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #undef DEBUG |
| |
| #include <asm/firmware.h> |
| #include <asm/prom.h> |
| |
| #ifdef DEBUG |
| #define DBG(fmt...) udbg_printf(fmt) |
| #else |
| #define DBG(fmt...) |
| #endif |
| |
| typedef struct { |
| unsigned long val; |
| char * name; |
| } firmware_feature_t; |
| |
| static __initdata firmware_feature_t |
| firmware_features_table[FIRMWARE_MAX_FEATURES] = { |
| {FW_FEATURE_PFT, "hcall-pft"}, |
| {FW_FEATURE_TCE, "hcall-tce"}, |
| {FW_FEATURE_SPRG0, "hcall-sprg0"}, |
| {FW_FEATURE_DABR, "hcall-dabr"}, |
| {FW_FEATURE_COPY, "hcall-copy"}, |
| {FW_FEATURE_ASR, "hcall-asr"}, |
| {FW_FEATURE_DEBUG, "hcall-debug"}, |
| {FW_FEATURE_PERF, "hcall-perf"}, |
| {FW_FEATURE_DUMP, "hcall-dump"}, |
| {FW_FEATURE_INTERRUPT, "hcall-interrupt"}, |
| {FW_FEATURE_MIGRATE, "hcall-migrate"}, |
| {FW_FEATURE_PERFMON, "hcall-perfmon"}, |
| {FW_FEATURE_CRQ, "hcall-crq"}, |
| {FW_FEATURE_VIO, "hcall-vio"}, |
| {FW_FEATURE_RDMA, "hcall-rdma"}, |
| {FW_FEATURE_LLAN, "hcall-lLAN"}, |
| {FW_FEATURE_BULK, "hcall-bulk"}, |
| {FW_FEATURE_XDABR, "hcall-xdabr"}, |
| {FW_FEATURE_MULTITCE, "hcall-multi-tce"}, |
| {FW_FEATURE_SPLPAR, "hcall-splpar"}, |
| }; |
| |
| /* Build up the firmware features bitmask using the contents of |
| * device-tree/ibm,hypertas-functions. Ultimately this functionality may |
| * be moved into prom.c prom_init(). |
| */ |
| void __init fw_feature_init(void) |
| { |
| struct device_node *dn; |
| char *hypertas, *s; |
| int len, i; |
| |
| DBG(" -> fw_feature_init()\n"); |
| |
| dn = of_find_node_by_path("/rtas"); |
| if (dn == NULL) { |
| printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n"); |
| goto out; |
| } |
| |
| hypertas = get_property(dn, "ibm,hypertas-functions", &len); |
| if (hypertas == NULL) |
| goto out; |
| |
| for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) { |
| for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) { |
| /* check value against table of strings */ |
| if (!firmware_features_table[i].name || |
| strcmp(firmware_features_table[i].name, s)) |
| continue; |
| |
| /* we have a match */ |
| ppc64_firmware_features |= |
| firmware_features_table[i].val; |
| break; |
| } |
| } |
| |
| out: |
| of_node_put(dn); |
| DBG(" <- fw_feature_init()\n"); |
| } |