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Diffstat (limited to 'arch/alpha/freebsd/system.cc')
| -rw-r--r-- | arch/alpha/freebsd/system.cc | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/arch/alpha/freebsd/system.cc b/arch/alpha/freebsd/system.cc new file mode 100644 index 000000000..681d4ad46 --- /dev/null +++ b/arch/alpha/freebsd/system.cc @@ -0,0 +1,167 @@ +/* + * Copyright (c) 2004-2005 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. + */ + +/** + * @file + * Modifications for the FreeBSD kernel. + * Based on kern/linux/linux_system.cc. + * + */ + +#include "arch/alpha/system.hh" +#include "arch/alpha/freebsd/system.hh" +#include "base/loader/symtab.hh" +#include "cpu/exec_context.hh" +#include "mem/functional/memory_control.hh" +#include "mem/functional/physical.hh" +#include "sim/builder.hh" +#include "arch/isa_traits.hh" +#include "sim/byteswap.hh" +#include "arch/vtophys.hh" + +#define TIMER_FREQUENCY 1193180 + +using namespace std; +using namespace AlphaISA; + +FreebsdAlphaSystem::FreebsdAlphaSystem(Params *p) + : AlphaSystem(p) +{ + /** + * Any time DELAY is called just skip the function. + * Shouldn't we actually emulate the delay? + */ + skipDelayEvent = addKernelFuncEvent<SkipFuncEvent>("DELAY"); + skipCalibrateClocks = + addKernelFuncEvent<SkipCalibrateClocksEvent>("calibrate_clocks"); +} + + +FreebsdAlphaSystem::~FreebsdAlphaSystem() +{ + delete skipDelayEvent; + delete skipCalibrateClocks; +} + + +void +FreebsdAlphaSystem::doCalibrateClocks(ExecContext *xc) +{ + Addr ppc_vaddr = 0; + Addr timer_vaddr = 0; + Addr ppc_paddr = 0; + Addr timer_paddr = 0; + + ppc_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg1]; + timer_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg2]; + + ppc_paddr = vtophys(physmem, ppc_vaddr); + timer_paddr = vtophys(physmem, timer_vaddr); + + uint8_t *ppc = physmem->dma_addr(ppc_paddr, sizeof(uint32_t)); + uint8_t *timer = physmem->dma_addr(timer_paddr, sizeof(uint32_t)); + + *(uint32_t *)ppc = htog((uint32_t)Clock::Frequency); + *(uint32_t *)timer = htog((uint32_t)TIMER_FREQUENCY); +} + + +void +FreebsdAlphaSystem::SkipCalibrateClocksEvent::process(ExecContext *xc) +{ + SkipFuncEvent::process(xc); + ((FreebsdAlphaSystem *)xc->system)->doCalibrateClocks(xc); +} + + +BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) + + Param<Tick> boot_cpu_frequency; + SimObjectParam<MemoryController *> memctrl; + SimObjectParam<PhysicalMemory *> physmem; + + Param<string> kernel; + Param<string> console; + Param<string> pal; + + Param<string> boot_osflags; + Param<string> readfile; + Param<unsigned int> init_param; + + Param<uint64_t> system_type; + Param<uint64_t> system_rev; + + Param<bool> bin; + VectorParam<string> binned_fns; + Param<bool> bin_int; + +END_DECLARE_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) + +BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) + + INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), + INIT_PARAM(memctrl, "memory controller"), + INIT_PARAM(physmem, "phsyical memory"), + INIT_PARAM(kernel, "file that contains the kernel code"), + INIT_PARAM(console, "file that contains the console code"), + INIT_PARAM(pal, "file that contains palcode"), + INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", + "a"), + INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), + INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), + INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), + INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10), + INIT_PARAM_DFLT(bin, "is this system to be binned", false), + INIT_PARAM(binned_fns, "functions to be broken down and binned"), + INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true) + +END_INIT_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) + +CREATE_SIM_OBJECT(FreebsdAlphaSystem) +{ + AlphaSystem::Params *p = new AlphaSystem::Params; + p->name = getInstanceName(); + p->boot_cpu_frequency = boot_cpu_frequency; + p->memctrl = memctrl; + p->physmem = physmem; + p->kernel_path = kernel; + p->console_path = console; + p->palcode = pal; + p->boot_osflags = boot_osflags; + p->init_param = init_param; + p->readfile = readfile; + p->system_type = system_type; + p->system_rev = system_rev; + p->bin = bin; + p->binned_fns = binned_fns; + p->bin_int = bin_int; + return new FreebsdAlphaSystem(p); +} + +REGISTER_SIM_OBJECT("FreebsdAlphaSystem", FreebsdAlphaSystem) + |