mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
BrentHoltsclaw
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
//
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// Copyright 2012, 2016 Google Inc. All Rights Reserved.
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// Authors: Thiebaud Weksteen (tweksteen@gmail.com)
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// (pmem) Johannes Stüttgen (johannes.stuettgen@gmail.com)
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//
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// Copyright (c) 2010-2015, Intel Corporation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef _CHIPSEC_H_
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#define _CHIPSEC_H_
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// ioctl commands for this driver
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#include "chipsec_ioctl.h"
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// variable length function arguments for the logging functions
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// sysctl and general kernel tools
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#include <libkern/OSMalloc.h>
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#include <sys/systm.h>
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// Character device dependencies
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#include <miscfs/devfs/devfs.h>
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#include <sys/conf.h>
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// IOKit memory interface
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#include <IOKit/IOMemoryDescriptor.h>
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#include <IOKit/IOLib.h>
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//
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// SoC IOSF Message Bus constants
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//
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#define MSGBUS_BUS 0x0
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#define MSGBUS_DEV 0x0
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#define MSGBUS_FUN 0x0
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#define MCR 0xD0
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#define MDR 0xD4
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#define MCRX 0xD8
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#define MSGBUS_MDR_IN_MASK 0x1
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#define MSGBUS_MDR_OUT_MASK 0x2
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typedef enum{
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CPU_DT_CODE_IDTR = 0x0,
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CPU_DT_CODE_GDTR = 0x1,
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CPU_DT_CODE_LDTR = 0x2,
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} DTR_CODE;
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// Read as many bytes as requested in uio->resid (starting from uio->offset)
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// and copy them to the userspace buffer in the uio.
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static kern_return_t pmem_read(dev_t dev, struct uio *uio, __unused int rw);
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// Read directly from physical memory.
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static kern_return_t pmem_read_memory(struct uio *uio);
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// Will read as many bytes as possible from physical memory,
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// stopping at page boundaries or invalid regions like memory-mapped I/O.
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static uint64_t pmem_partial_read(struct uio *uio, addr64_t addr,
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uint64_t requested_bytes);
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// User-mode interface to obtain the binary memory map
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static kern_return_t pmem_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag,
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struct proc *p);
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// Debug logging, only active in debug build.
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static void pmem_log(const char *fmt, ...);
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// Error logging, always active.
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static void pmem_error(const char *fmt, ...);
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// Try to free all resources.
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static int pmem_cleanup(int error);
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// Declare c calling conventions for the linker to find these symbols
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extern "C" {
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kern_return_t chipsec_start(kmod_info_t * ki, void *d);
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kern_return_t chipsec_stop(kmod_info_t *ki, void *d);
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}
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#endif // _CHIPSEC_H_
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