104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/*
|
|
* 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");
|
|
}
|