ARM: Add system for ARM/Linux and bootstrapping
This commit is contained in:
parent
8ed4f0a02c
commit
bb5377899a
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@ -1,6 +1,15 @@
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# Copyright (c) 2009 ARM Limited
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# Copyright (c) 2009 ARM Limited
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# All rights reserved.
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# All rights reserved.
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#
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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||||||
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# met: redistributions of source code must retain the above copyright
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@ -30,7 +39,16 @@ from m5.params import *
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from System import System
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from System import System
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class ArmMachineType(Enum):
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map = {'RealView_EB' : 827,
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'RealView_PBX' : 1901 }
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class ArmSystem(System):
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class ArmSystem(System):
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type = 'ArmSystem'
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type = 'ArmSystem'
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load_addr_mask = 0xffffffff
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load_addr_mask = 0xffffffff
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class LinuxArmSystem(ArmSystem):
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type = 'LinuxArmSystem'
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load_addr_mask = 0x0fffffff
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machine_type = Param.ArmMachineType('RealView_PBX',
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"Machine id from http://www.arm.linux.org.uk/developer/machines/")
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@ -73,6 +73,7 @@ if env['TARGET_ISA'] == 'arm':
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Source('interrupts.cc')
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Source('interrupts.cc')
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Source('stacktrace.cc')
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Source('stacktrace.cc')
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Source('system.cc')
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Source('system.cc')
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Source('linux/system.cc')
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Source('table_walker.cc')
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Source('table_walker.cc')
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SimObject('ArmInterrupts.py')
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SimObject('ArmInterrupts.py')
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@ -136,9 +136,9 @@ ArmFault::invoke(ThreadContext *tc)
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panic("unknown Mode\n");
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panic("unknown Mode\n");
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}
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}
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Addr pc = tc->readPC();
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Addr pc M5_VAR_USED = tc->readPC();
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Addr newPc = getVector(tc) | (sctlr.te ? (ULL(1) << PcTBitShift) : 0);
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Addr newPc = getVector(tc) | (sctlr.te ? (ULL(1) << PcTBitShift) : 0);
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DPRINTF(Faults, "Invoking Fault: %s cpsr: %#x PC: %#x lr: %#x newVector: %#x\n",
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DPRINTF(Faults, "Invoking Fault:%s cpsr:%#x PC:%#x lr:%#x newVec: %#x\n",
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name(), cpsr, pc, tc->readIntReg(INTREG_LR), newPc);
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name(), cpsr, pc, tc->readIntReg(INTREG_LR), newPc);
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tc->setPC(newPc);
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tc->setPC(newPc);
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tc->setNextPC(newPc + cpsr.t ? 2 : 4 );
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tc->setNextPC(newPc + cpsr.t ? 2 : 4 );
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282
src/arch/arm/linux/atag.hh
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282
src/arch/arm/linux/atag.hh
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@ -0,0 +1,282 @@
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/*
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* Copyright (c) 2010 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Ali Saidi
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*/
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#ifndef __ARCH_ARM_LINUX_ATAG_HH__
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#define __ARCH_ARM_LINUX_ATAG_HH__
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#include <cstring>
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#include <string>
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#include "base/types.hh"
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enum {
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CoreTag = 0x54410001,
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MemTag = 0x54410002,
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RevTag = 0x54410007,
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SerialTag = 0x54410006,
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CmdTag = 0x54410009,
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NoneTag = 0x00000000,
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};
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class AtagHeader
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{
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protected:
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uint32_t *storage;
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uint32_t _size;
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public:
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/** Tag (normally starts with 'T''A' and 16 bits of number */
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virtual uint32_t tag() = 0;
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/** If the header should be 0 size */
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virtual bool null() { return false; }
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uint32_t size() const { return _size; }
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AtagHeader(uint32_t s)
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: _size(s)
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{
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storage = new uint32_t[size()];
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}
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virtual ~AtagHeader()
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{
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delete[] storage;
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}
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uint32_t copyOut(uint8_t *p)
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{
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storage[0] = null() ? 0 : size();
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storage[1] = tag();
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memcpy(p, storage, size() << 2);
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return size() << 2;
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}
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};
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class AtagCore : public AtagHeader
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{
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public:
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static const uint32_t Size = 5;
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uint32_t tag() { return CoreTag; }
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void flags(uint32_t i) { storage[2] = i; }
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void pagesize(uint32_t i) { storage[3] = i; }
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void rootdev(uint32_t i) { storage[4] = i; }
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AtagCore()
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: AtagHeader(Size)
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{}
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};
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class AtagMem : public AtagHeader
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{
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public:
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static const uint32_t Size = 4;
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uint32_t tag() { return MemTag; }
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void memSize(uint32_t i) { storage[2] = i; }
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void memStart(uint32_t i) { storage[3] = i; }
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AtagMem()
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: AtagHeader(Size)
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{}
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};
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class AtagRev : public AtagHeader
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{
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public:
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static const uint32_t Size = 3;
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uint32_t tag() { return RevTag; }
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void rev(uint32_t i) { storage[2] = i; }
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AtagRev()
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: AtagHeader(Size)
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{}
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};
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class AtagSerial : public AtagHeader
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{
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public:
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static const uint32_t Size = 4;
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uint32_t tag() { return SerialTag; }
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void sn(uint64_t i) { storage[2] = (uint32_t)i; storage[3] = i >> 32; }
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AtagSerial()
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: AtagHeader(Size)
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{}
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};
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class AtagCmdline : public AtagHeader
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{
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public:
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static const uint32_t Size = 3;
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uint32_t tag() { return CmdTag; }
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void cmdline(const std::string &s)
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{
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// Add one for null terminator
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int len = s.length() + 1;
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// 2 + ceiling(len/4)
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_size = 2 + ((len + 3) >> 2);
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delete[] storage;
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storage = new uint32_t[size()];
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strcpy((char*)&storage[2] , s.c_str());
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}
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AtagCmdline()
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: AtagHeader(Size)
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{}
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};
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class AtagNone : public AtagHeader
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{
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public:
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static const uint32_t Size = 2;
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virtual bool null() { return true; }
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uint32_t tag() { return NoneTag; }
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AtagNone()
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: AtagHeader(Size)
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{}
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};
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/*
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//
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// example ARM Linux bootloader code
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// this example is distributed under the BSD licence
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// Code taken from http://www.simtec.co.uk/products/SWLINUX/files/booting_article.html
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///
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// list of possible tags
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#define ATAG_NONE 0x00000000
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#define ATAG_CORE 0x54410001
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#define ATAG_MEM 0x54410002
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#define ATAG_VIDEOTEXT 0x54410003
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#define ATAG_RAMDISK 0x54410004
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#define ATAG_INITRD2 0x54420005
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#define ATAG_SERIAL 0x54410006
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#define ATAG_REVISION 0x54410007
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#define ATAG_VIDEOLFB 0x54410008
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#define ATAG_CMDLINE 0x54410009
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// structures for each atag
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struct atag_header {
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u32 size; // length of tag in words including this header
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u32 tag; // tag type
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};
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struct atag_core {
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u32 flags;
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u32 pagesize;
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u32 rootdev;
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};
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struct atag_mem {
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u32 size;
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u32 start;
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};
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struct atag_videotext {
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u8 x;
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u8 y;
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u16 video_page;
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u8 video_mode;
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u8 video_cols;
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u16 video_ega_bx;
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u8 video_lines;
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u8 video_isvga;
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u16 video_points;
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};
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struct atag_ramdisk {
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u32 flags;
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u32 size;
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u32 start;
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};
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struct atag_initrd2 {
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u32 start;
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u32 size;
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};
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struct atag_serialnr {
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u32 low;
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u32 high;
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};
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struct atag_revision {
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u32 rev;
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};
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struct atag_videolfb {
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u16 lfb_width;
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u16 lfb_height;
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u16 lfb_depth;
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u16 lfb_linelength;
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u32 lfb_base;
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u32 lfb_size;
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u8 red_size;
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u8 red_pos;
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u8 green_size;
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u8 green_pos;
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u8 blue_size;
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u8 blue_pos;
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u8 rsvd_size;
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u8 rsvd_pos;
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};
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struct atag_cmdline {
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char cmdline[1];
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};
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struct atag {
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struct atag_header hdr;
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union {
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struct atag_core core;
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struct atag_mem mem;
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struct atag_videotext videotext;
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struct atag_ramdisk ramdisk;
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struct atag_initrd2 initrd2;
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struct atag_serialnr serialnr;
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struct atag_revision revision;
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struct atag_videolfb videolfb;
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struct atag_cmdline cmdline;
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} u;
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};
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*/
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#endif // __ARCH_ARM_LINUX_ATAG_HH__
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124
src/arch/arm/linux/system.cc
Normal file
124
src/arch/arm/linux/system.cc
Normal file
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@ -0,0 +1,124 @@
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|
/*
|
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|
* Copyright (c) 2010 ARM Limited
|
||||||
|
* All rights reserved
|
||||||
|
*
|
||||||
|
* The license below extends only to copyright in the software and shall
|
||||||
|
* not be construed as granting a license to any other intellectual
|
||||||
|
* property including but not limited to intellectual property relating
|
||||||
|
* to a hardware implementation of the functionality of the software
|
||||||
|
* licensed hereunder. You may use the software subject to the license
|
||||||
|
* terms below provided that you ensure that this notice is replicated
|
||||||
|
* unmodified and in its entirety in all distributions of the software,
|
||||||
|
* modified or unmodified, in source code or in binary form.
|
||||||
|
*
|
||||||
|
* Copyright (c) 2002-2006 The Regents of The University of Michigan
|
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|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions are
|
||||||
|
* met: redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer;
|
||||||
|
* redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution;
|
||||||
|
* neither the name of the copyright holders nor the names of its
|
||||||
|
* contributors may be used to endorse or promote products derived from
|
||||||
|
* this software without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||||
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||||
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||||
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||||
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||||
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||||
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*
|
||||||
|
* Authors: Ali Saidi
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "arch/arm/isa_traits.hh"
|
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|
#include "arch/arm/linux/atag.hh"
|
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|
#include "arch/arm/linux/system.hh"
|
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|
#include "base/loader/object_file.hh"
|
||||||
|
#include "base/loader/symtab.hh"
|
||||||
|
#include "mem/physical.hh"
|
||||||
|
|
||||||
|
using namespace ArmISA;
|
||||||
|
|
||||||
|
LinuxArmSystem::LinuxArmSystem(Params *p)
|
||||||
|
: ArmSystem(p)
|
||||||
|
{
|
||||||
|
// Load symbols at physical address, we might not want
|
||||||
|
// to do this perminately, for but early bootup work
|
||||||
|
// it is helpfulp.
|
||||||
|
kernel->loadGlobalSymbols(kernelSymtab, loadAddrMask);
|
||||||
|
kernel->loadGlobalSymbols(debugSymbolTable, loadAddrMask);
|
||||||
|
|
||||||
|
// Setup boot data structure
|
||||||
|
AtagCore *ac = new AtagCore;
|
||||||
|
ac->flags(1); // read-only
|
||||||
|
ac->pagesize(8192);
|
||||||
|
ac->rootdev(0);
|
||||||
|
|
||||||
|
AtagMem *am = new AtagMem;
|
||||||
|
am->memSize(params()->physmem->size());
|
||||||
|
am->memStart(params()->physmem->start());
|
||||||
|
|
||||||
|
AtagCmdline *ad = new AtagCmdline;
|
||||||
|
ad->cmdline(params()->boot_osflags);
|
||||||
|
|
||||||
|
DPRINTF(Loader, "boot command line %d bytes: %s\n", ad->size() <<2, params()->boot_osflags.c_str());
|
||||||
|
|
||||||
|
AtagNone *an = new AtagNone;
|
||||||
|
|
||||||
|
uint32_t size = ac->size() + am->size() + ad->size() + an->size();
|
||||||
|
uint32_t offset = 0;
|
||||||
|
uint8_t *boot_data = new uint8_t[size << 2];
|
||||||
|
|
||||||
|
offset += ac->copyOut(boot_data + offset);
|
||||||
|
offset += am->copyOut(boot_data + offset);
|
||||||
|
offset += ad->copyOut(boot_data + offset);
|
||||||
|
offset += an->copyOut(boot_data + offset);
|
||||||
|
|
||||||
|
DPRINTF(Loader, "Boot atags was %d bytes in total\n", size << 2);
|
||||||
|
DDUMP(Loader, boot_data, size << 2);
|
||||||
|
|
||||||
|
functionalPort.writeBlob(ParamsList, boot_data, size << 2);
|
||||||
|
|
||||||
|
#ifndef NDEBUG
|
||||||
|
kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic");
|
||||||
|
if (!kernelPanicEvent)
|
||||||
|
panic("could not find kernel symbol \'panic\'");
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
LinuxArmSystem::startup()
|
||||||
|
{
|
||||||
|
ArmSystem::startup();
|
||||||
|
ThreadContext *tc = threadContexts[0];
|
||||||
|
|
||||||
|
// Set the initial PC to be at start of the kernel code
|
||||||
|
tc->setPC(tc->getSystemPtr()->kernelEntry & loadAddrMask);
|
||||||
|
tc->setNextPC(tc->readPC() + sizeof(MachInst));
|
||||||
|
|
||||||
|
// Setup the machine type
|
||||||
|
tc->setIntReg(0, 0);
|
||||||
|
tc->setIntReg(1, params()->machine_type);
|
||||||
|
tc->setIntReg(2, ParamsList);
|
||||||
|
}
|
||||||
|
|
||||||
|
LinuxArmSystem::~LinuxArmSystem()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
LinuxArmSystem *
|
||||||
|
LinuxArmSystemParams::create()
|
||||||
|
{
|
||||||
|
return new LinuxArmSystem(this);
|
||||||
|
}
|
80
src/arch/arm/linux/system.hh
Normal file
80
src/arch/arm/linux/system.hh
Normal file
|
@ -0,0 +1,80 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2010 ARM Limited
|
||||||
|
* All rights reserved
|
||||||
|
*
|
||||||
|
* The license below extends only to copyright in the software and shall
|
||||||
|
* not be construed as granting a license to any other intellectual
|
||||||
|
* property including but not limited to intellectual property relating
|
||||||
|
* to a hardware implementation of the functionality of the software
|
||||||
|
* licensed hereunder. You may use the software subject to the license
|
||||||
|
* terms below provided that you ensure that this notice is replicated
|
||||||
|
* unmodified and in its entirety in all distributions of the software,
|
||||||
|
* modified or unmodified, in source code or in binary form.
|
||||||
|
*
|
||||||
|
* Copyright (c) 2002-2005 The Regents of The University of Michigan
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions are
|
||||||
|
* met: redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer;
|
||||||
|
* redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution;
|
||||||
|
* neither the name of the copyright holders nor the names of its
|
||||||
|
* contributors may be used to endorse or promote products derived from
|
||||||
|
* this software without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||||
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||||
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||||
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||||
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||||
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||||
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*
|
||||||
|
* Authors: Ali Saidi
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __ARCH_ARM_LINUX_SYSTEM_HH__
|
||||||
|
#define __ARCH_ARM_LINUX_SYSTEM_HH__
|
||||||
|
|
||||||
|
#include <string>
|
||||||
|
#include <vector>
|
||||||
|
|
||||||
|
#include "arch/arm/system.hh"
|
||||||
|
#include "kern/linux/events.hh"
|
||||||
|
#include "params/LinuxArmSystem.hh"
|
||||||
|
|
||||||
|
class LinuxArmSystem : public ArmSystem
|
||||||
|
{
|
||||||
|
protected:
|
||||||
|
static const int ParamsList = 0x100;
|
||||||
|
|
||||||
|
public:
|
||||||
|
/** Boilerplate params code */
|
||||||
|
typedef LinuxArmSystemParams Params;
|
||||||
|
const Params *
|
||||||
|
params() const
|
||||||
|
{
|
||||||
|
return dynamic_cast<const Params *>(_params);
|
||||||
|
}
|
||||||
|
|
||||||
|
LinuxArmSystem(Params *p);
|
||||||
|
~LinuxArmSystem();
|
||||||
|
|
||||||
|
/** Initialize the CPU for booting */
|
||||||
|
void startup();
|
||||||
|
private:
|
||||||
|
#ifndef NDEBUG
|
||||||
|
/** Event to halt the simulator if the kernel calls panic() */
|
||||||
|
BreakPCEvent *kernelPanicEvent;
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif // __ARCH_ARM_LINUX_SYSTEM_HH__
|
||||||
|
|
|
@ -1,4 +1,16 @@
|
||||||
/*
|
/*
|
||||||
|
* Copyright (c) 2010 ARM Limited
|
||||||
|
* All rights reserved
|
||||||
|
*
|
||||||
|
* The license below extends only to copyright in the software and shall
|
||||||
|
* not be construed as granting a license to any other intellectual
|
||||||
|
* property including but not limited to intellectual property relating
|
||||||
|
* to a hardware implementation of the functionality of the software
|
||||||
|
* licensed hereunder. You may use the software subject to the license
|
||||||
|
* terms below provided that you ensure that this notice is replicated
|
||||||
|
* unmodified and in its entirety in all distributions of the software,
|
||||||
|
* modified or unmodified, in source code or in binary form.
|
||||||
|
*
|
||||||
* Copyright (c) 2002-2006 The Regents of The University of Michigan
|
* Copyright (c) 2002-2006 The Regents of The University of Michigan
|
||||||
* All rights reserved.
|
* All rights reserved.
|
||||||
*
|
*
|
||||||
|
@ -30,8 +42,7 @@
|
||||||
|
|
||||||
#include "arch/arm/system.hh"
|
#include "arch/arm/system.hh"
|
||||||
|
|
||||||
|
using namespace ArmISA;
|
||||||
using namespace LittleEndianGuest;
|
|
||||||
|
|
||||||
ArmSystem::ArmSystem(Params *p)
|
ArmSystem::ArmSystem(Params *p)
|
||||||
: System(p)
|
: System(p)
|
||||||
|
|
Loading…
Reference in a new issue