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score: Add MicroBlaze port

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This commit is contained in:
Joel Sherrill
2021-09-29 12:39:36 -05:00
parent 822ebb4cae
commit edf8b49ee5
5 changed files with 1664 additions and 0 deletions
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38
c/src/lib/libbsp/microblaze/gdbmbsim/startup/_hw_exception_handler.S Normal file
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/* Copyright (c) 2001, 2009 Xilinx, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of Xilinx 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 HOLDER 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
HOLDER 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.
*/
.text
.globl _hw_exception_handler # HW Exception Handler Label
.align 2
_hw_exception_handler:
rted r17, 0
nop

168
cpukit/score/cpu/microblaze/cpu.c Normal file
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/*
* MicroBlaze CPU Dependent Source
*
* COPYRIGHT (c) 1989-2011.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id: cpu.c,v 1.24 2010/03/27 15:02:26 joel Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/score/isr.h>
#include <rtems/score/wkspace.h>
/* _CPU_Initialize
*
* This routine performs processor dependent initialization.
*
* INPUT PARAMETERS: NONE
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
void _CPU_Initialize(void)
{
/*
* If there is not an easy way to initialize the FP context
* during Context_Initialize, then it is usually easier to
* save an "uninitialized" FP context here and copy it to
* the task's during Context_Initialize.
*/
/* FP context initialization support goes here */
}
/*PAGE
*
* _CPU_ISR_Get_level
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
uint32_t _CPU_ISR_Get_level( void )
{
/*
* This routine returns the current interrupt level.
*/
return 0;
}
/*PAGE
*
* _CPU_ISR_install_raw_handler
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
void _CPU_ISR_install_raw_handler(
uint32_t vector,
proc_ptr new_handler,
proc_ptr *old_handler
)
{
/*
* This is where we install the interrupt handler into the "raw" interrupt
* table used by the CPU to dispatch interrupt handlers.
*/
}
/*PAGE
*
* _CPU_ISR_install_vector
*
* This kernel routine installs the RTEMS handler for the
* specified vector.
*
* Input parameters:
* vector - interrupt vector number
* old_handler - former ISR for this vector number
* new_handler - replacement ISR for this vector number
*
* Output parameters: NONE
*
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
void _CPU_ISR_install_vector(
uint32_t vector,
proc_ptr new_handler,
proc_ptr *old_handler
)
{
*old_handler = _ISR_Vector_table[ vector ];
/*
* If the interrupt vector table is a table of pointer to isr entry
* points, then we need to install the appropriate RTEMS interrupt
* handler for this vector number.
*/
_CPU_ISR_install_raw_handler( vector, new_handler, old_handler );
/*
* We put the actual user ISR address in '_ISR_vector_table'. This will
* be used by the _ISR_Handler so the user gets control.
*/
_ISR_Vector_table[ vector ] = new_handler;
}
/*PAGE
*
* _CPU_Install_interrupt_stack
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
void _CPU_Install_interrupt_stack( void )
{
}
/*PAGE
*
* _CPU_Thread_Idle_body
*
* NOTES:
*
* 1. This is the same as the regular CPU independent algorithm.
*
* 2. If you implement this using a "halt", "idle", or "shutdown"
* instruction, then don't forget to put it in an infinite loop.
*
* 3. Be warned. Some processors with onboard DMA have been known
* to stop the DMA if the CPU were put in IDLE mode. This might
* also be a problem with other on-chip peripherals. So use this
* hook with caution.
*
* NO_CPU Specific Information:
*
* XXX document implementation including references if appropriate
*/
void *_CPU_Thread_Idle_body( uintptr_t ignored )
{
for( ; ; )
/* insert your "halt" instruction here */ ;
return NULL;
}

125
cpukit/score/cpu/microblaze/rtems/asm.h Normal file
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/**
* @file rtems/asm.h
*
* This include file attempts to address the problems
* caused by incompatible flavors of assemblers and
* toolsets. It primarily addresses variations in the
* use of leading underscores on symbols and the requirement
* that register names be preceded by a %.
*/
/*
* NOTE: The spacing in the use of these macros
* is critical to them working as advertised.
*
* COPYRIGHT:
*
* This file is based on similar code found in newlib available
* from ftp.cygnus.com. The file which was used had no copyright
* notice. This file is freely distributable as long as the source
* of the file is noted. This file is:
*
* COPYRIGHT (c) 1994-2006.
* On-Line Applications Research Corporation (OAR).
*
* $Id: asm.h,v 1.16 2006/01/16 15:12:12 joel Exp $
*/
#ifndef _RTEMS_ASM_H
#define _RTEMS_ASM_H
/*
* Indicate we are in an assembly file and get the basic CPU definitions.
*/
#ifndef ASM
#define ASM
#endif
#include <rtems/score/cpuopts.h>
#include <rtems/score/no_cpu.h>
#ifndef __USER_LABEL_PREFIX__
/**
* Recent versions of GNU cpp define variables which indicate the
* need for underscores and percents. If not using GNU cpp or
* the version does not support this, then you will obviously
* have to define these as appropriate.
*
* This symbol is prefixed to all C program symbols.
*/
#define __USER_LABEL_PREFIX__ _
#endif
#ifndef __REGISTER_PREFIX__
/**
* Recent versions of GNU cpp define variables which indicate the
* need for underscores and percents. If not using GNU cpp or
* the version does not support this, then you will obviously
* have to define these as appropriate.
*
* This symbol is prefixed to all register names.
*/
#define __REGISTER_PREFIX__
#endif
#include <rtems/concat.h>
/** Use the right prefix for global labels. */
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
/** Use the right prefix for registers. */
#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
/*
* define macros for all of the registers on this CPU
*
* EXAMPLE: #define d0 REG (d0)
*/
/*
* Define macros to handle section beginning and ends.
*/
/** This macro is used to denote the beginning of a code declaration. */
#define BEGIN_CODE_DCL .text
/** This macro is used to denote the end of a code declaration. */
#define END_CODE_DCL
/** This macro is used to denote the beginning of a data declaration section. */
#define BEGIN_DATA_DCL .data
/** This macro is used to denote the end of a data declaration section. */
#define END_DATA_DCL
/** This macro is used to denote the beginning of a code section. */
#define BEGIN_CODE .text
/** This macro is used to denote the end of a code section. */
#define END_CODE
/** This macro is used to denote the beginning of a data section. */
#define BEGIN_DATA
/** This macro is used to denote the end of a data section. */
#define END_DATA
/** This macro is used to denote the beginning of the
* unitialized data section.
*/
#define BEGIN_BSS
/** This macro is used to denote the end of the unitialized data section. */
#define END_BSS
/** This macro is used to denote the end of the assembly file. */
#define END
/**
* This macro is used to declare a public global symbol.
*
* @note This must be tailored for a particular flavor of the C compiler.
* They may need to put underscores in front of the symbols.
*/
#define PUBLIC(sym) .globl SYM (sym)
/**
* This macro is used to prototype a public global symbol.
*
* @note This must be tailored for a particular flavor of the C compiler.
* They may need to put underscores in front of the symbols.
*/
#define EXTERN(sym) .globl SYM (sym)
#endif

1263
cpukit/score/cpu/microblaze/rtems/score/cpu.h Normal file
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70
cpukit/score/cpu/microblaze/rtems/score/microblaze.h Normal file
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/*
* This file sets up basic CPU dependency settings based on
* compiler settings. For example, it can determine if
* floating point is available. This particular implementation
* is specified to the NO CPU port.
*
* COPYRIGHT (c) 1989-2011.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id: no_cpu.h,v 1.9 2009/12/02 09:48:25 ralf Exp $
*
*/
#ifndef _RTEMS_SCORE_NO_CPU_H
#define _RTEMS_SCORE_NO_CPU_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* This file contains the information required to build
* RTEMS for a particular member of the NO CPU family.
* It does this by setting variables to indicate which
* implementation dependent features are present in a particular
* member of the family.
*
* This is a good place to list all the known CPU models
* that this port supports and which RTEMS CPU model they correspond
* to.
*/
#if defined(rtems_multilib)
/*
* Figure out all CPU Model Feature Flags based upon compiler
* predefines.
*/
#define CPU_MODEL_NAME "rtems_multilib"
#define NOCPU_HAS_FPU 1
#else
/* if defined(__MICROBLAZE__) */
#define CPU_MODEL_NAME "MicroBlaze"
#define NOCPU_HAS_FPU 1
/*
#else
#error "Unsupported CPU Model"
*/
#endif
/*
* Define the name of the CPU family.
*/
#define CPU_NAME "MicroBlaze CPU"
#ifdef __cplusplus
}
#endif
#endif /* _RTEMS_SCORE_NO_CPU_H */