ed4e46bdce
result of a joined effort with parts contributed by Doug Rabson, Warner Losh and Stefan Esser (hope I did not forget anybody). Part of the sources is obtained from NetBSD with modifications. This code is work in progress: As of the time of the initial import, a loader.exe executable is built, which can be loaded on an Alpha with NT only firmware, but no attempt is made to switch to OSF PAL code as required to start an actual kernel.
200 lines
6.8 KiB
C
200 lines
6.8 KiB
C
/*
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* Copyright (c) 1999, Stefan Esser <se@freebsd.org>
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* All rights reserved.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT 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 OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*
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*/
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#ifdef __GNUC__
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#define INLINE inline
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#else
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#define INLINE /**/
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#endif
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/* System Parameter Block holding ARC and VENDOR function vector addresses */
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#define SPBlock ((SPB *)0xffffffff806fe000ul)
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/*
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* Convert between 32bit (ARC) and 64bit (Alpha) pointers
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*/
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static INLINE void*
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ptr(arcptr p)
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{
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return (void*)(int64_t)p.adr;
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}
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static INLINE arcptr
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toarcptr(void *p)
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{
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arcptr p32;
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p32.adr = (int32_t)(int64_t) p;
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return (p32);
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}
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/*
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* Return entry point for ARC BIOS function "funcno"
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*/
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static INLINE void *
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get_arc_vector(int funcno)
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{
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arcptr (*arc_vector)[] = ptr(SPBlock->FirmwareVectorP);
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return ptr((*arc_vector)[funcno -1]);
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}
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/*
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* Return entry point for VENDOR function "funcno"
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*/
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static INLINE void *
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get_vendor_vector(int funcno)
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{
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arcptr (*arc_vector)[] = ptr(SPBlock->PrivateVectorP);
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return ptr((*arc_vector)[funcno -1]);
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}
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static INLINE int
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get_vendor_vector_length(void)
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{
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return SPBlock->PrivateVectorLength;
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}
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/*
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* Macros to create inline wrappers for ARCS BIOS functions
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*
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* Parameter:
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* num function number (starting at 1)
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* result result type
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* fn function name
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* param parameter list (types and formal args)
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* args parameter list (formal args only)
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*/
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#define ARC_FN(num,result,fn,param,args) \
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static inline result fn param { \
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typedef result _fn_t param; \
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_fn_t *p_ ## fn = get_arc_vector(num); \
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return p_ ## fn args; \
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}
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#define VND_FN(num,result,fn,param,args) \
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static INLINE result fn param { \
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typedef result _fn_t param; \
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_fn_t *p_ ## fn = get_vendor_vector(num); \
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return p_ ## fn args; \
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}
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/* function codes as defined in ARC Specification Version 1.2 */
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ARC_FN(1, int32_t, Load,
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(char *Path, u_int32_t TopAddr, u_int32_t *ExecAddr, u_int32_t *LowAddr),
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(Path, TopAddr, ExecAddr, LowAddr))
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ARC_FN(2, int32_t, Invoke,
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(u_int32_t ExecAddr, u_int32_t StackAddr, u_int32_t Argc, char *Argv[], char *Envp[]),
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(ExecAddr, StackAddr, Argc, Argv, Envp))
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ARC_FN(3, int32_t, Execute,
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(char *Path, u_int32_t Argc, char *Argv[], char *Envp[]),
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(Path, Argc, Argv, Envp))
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ARC_FN(4, void, Halt, (void), ())
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ARC_FN(5, void, PowerDown, (void), ())
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ARC_FN(6, void, Restart, (void), ())
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ARC_FN(7, void, FwReboot, (void), ())
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ARC_FN(8, void, EnterInteractiveMode, (void), ())
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ARC_FN(10, CONFIGURATION_COMPONENT *, GetPeer,
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(CONFIGURATION_COMPONENT *Current),
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(Current))
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ARC_FN(11, CONFIGURATION_COMPONENT *, GetChild,
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(CONFIGURATION_COMPONENT *Current),
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(Current))
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ARC_FN(12, CONFIGURATION_COMPONENT *, GetParent,
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(CONFIGURATION_COMPONENT *Current),
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(Current))
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ARC_FN(13, CONFIGURATION_COMPONENT *, AddChild,
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(CONFIGURATION_COMPONENT *Current, CONFIGURATION_COMPONENT *Template,
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void *ConfigurationData),
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(Current, Template, ConfigurationData))
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ARC_FN(14, int32_t, DeleteComponent,
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(CONFIGURATION_COMPONENT *ComponentToDelete),
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(ComponentToDelete))
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ARC_FN(15, CONFIGURATION_COMPONENT *, GetComponent, (char *Path), (Path))
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ARC_FN(16, int32_t, GetConfigurationData,
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(void *ConfigurationData, CONFIGURATION_COMPONENT *Component),
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(ConfigurationData, Component))
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ARC_FN(17, int32_t, SaveConfiguration, (void), ())
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ARC_FN(18, SYSTEM_ID *, GetSystemId, (void), ())
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ARC_FN(19, MEMORY_DESCRIPTOR *, GetMemoryDescriptor,
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(MEMORY_DESCRIPTOR *Current),
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(Current))
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ARC_FN(21, TIME_FIELDS *, GetTime, (void), ())
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ARC_FN(22, u_int32_t, GetRelativeTime, (void), ())
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ARC_FN(23, int32_t, GetDirectoryEntry,
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(u_int32_t FileId, DIRECTORY_ENTRY *Buffer, u_int32_t Length, u_int32_t *Count),
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(FileId, Buffer, Length, Count))
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ARC_FN(24, int32_t, Open,
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(const char *Path, OPEN_MODE OpenMode, u_int32_t *FileId),
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(Path, OpenMode, FileId))
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ARC_FN(25, int32_t, Close, (u_int32_t FileId), (FileId))
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ARC_FN(26, int32_t, Read,
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(u_int32_t FileId, void *Buffer, u_int32_t N, u_int32_t *Count),
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(FileId, Buffer, N, Count))
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ARC_FN(27, int32_t, GetReadStatus, (u_int32_t FileId), (FileId))
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ARC_FN(28, int32_t, Write,
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(u_int32_t FileId, void const *Buffer, u_int32_t N, u_int32_t *Count),
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(FileId, Buffer, N, Count))
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ARC_FN(29, int32_t, Seek,
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(u_int32_t FileId, fpos_t *Position, SEEK_MODE SeekMode),
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(FileId, Position, SeekMode))
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ARC_FN(30, int32_t, Mount,
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(char *Path, MOUNT_OPERATION Operation),
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(Path, Operation))
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ARC_FN(31, char *, GetEnvironmentVariable, (char *Name), (Name))
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ARC_FN(32, int32_t, SetEnvironmentVariable,
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(char *Name, char *Value),
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(Name, Value))
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ARC_FN(33, int32_t, GetFileInformation,
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(u_int32_t FileId, FILE_INFORMATION *Information),
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(FileId, Information))
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ARC_FN(34, int32_t, SetFileInformation,
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(u_int32_t FileId, u_int32_t AttributeFlags, u_int32_t AttributeMask),
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(FileId, AttributeFlags, AttributeMask))
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ARC_FN(35, void, FlushAllCaches, (void), ())
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ARC_FN(36, int32_t, TestUnicodeCharacter,
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(u_int32_t FileId, WCHAR UnicodeCharacter),
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(FileId, UnicodeCharacter))
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ARC_FN(37, ARC_DISPLAY_STATUS *, GetDisplayStatus, (u_int32_t FileId), (FileId))
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/* Vendor specific function codes have not been verified beyond function 4 */
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VND_FN(1, void *, AllocatePool, (u_int32_t NumberOfBytes), (NumberOfBytes))
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VND_FN(2, void, StallExecution, (u_int32_t Microseconds), (Microseconds))
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VND_FN(3, u_int32_t, Print,
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(char *Format, int32_t Arg1, int32_t Arg2, int32_t Arg3),
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(Format, Arg1, Arg2, Arg3))
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VND_FN(4, void, ReturnExtendedSystemInformation,
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(EXTENDED_SYSTEM_INFORMATION *SystemInfo),
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(SystemInfo))
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