//==========================================================================
|
//==========================================================================
|
//
|
//
|
// var_misc.c
|
// var_misc.c
|
//
|
//
|
// HAL implementation miscellaneous functions
|
// HAL implementation miscellaneous functions
|
//
|
//
|
//==========================================================================
|
//==========================================================================
|
//####ECOSGPLCOPYRIGHTBEGIN####
|
//####ECOSGPLCOPYRIGHTBEGIN####
|
// -------------------------------------------
|
// -------------------------------------------
|
// This file is part of eCos, the Embedded Configurable Operating System.
|
// This file is part of eCos, the Embedded Configurable Operating System.
|
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
//
|
//
|
// eCos is free software; you can redistribute it and/or modify it under
|
// eCos is free software; you can redistribute it and/or modify it under
|
// the terms of the GNU General Public License as published by the Free
|
// the terms of the GNU General Public License as published by the Free
|
// Software Foundation; either version 2 or (at your option) any later version.
|
// Software Foundation; either version 2 or (at your option) any later version.
|
//
|
//
|
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// for more details.
|
// for more details.
|
//
|
//
|
// You should have received a copy of the GNU General Public License along
|
// You should have received a copy of the GNU General Public License along
|
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
//
|
//
|
// As a special exception, if other files instantiate templates or use macros
|
// As a special exception, if other files instantiate templates or use macros
|
// or inline functions from this file, or you compile this file and link it
|
// or inline functions from this file, or you compile this file and link it
|
// with other works to produce a work based on this file, this file does not
|
// with other works to produce a work based on this file, this file does not
|
// by itself cause the resulting work to be covered by the GNU General Public
|
// by itself cause the resulting work to be covered by the GNU General Public
|
// License. However the source code for this file must still be made available
|
// License. However the source code for this file must still be made available
|
// in accordance with section (3) of the GNU General Public License.
|
// in accordance with section (3) of the GNU General Public License.
|
//
|
//
|
// This exception does not invalidate any other reasons why a work based on
|
// This exception does not invalidate any other reasons why a work based on
|
// this file might be covered by the GNU General Public License.
|
// this file might be covered by the GNU General Public License.
|
//
|
//
|
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
// at http://sources.redhat.com/ecos/ecos-license/
|
// at http://sources.redhat.com/ecos/ecos-license/
|
// -------------------------------------------
|
// -------------------------------------------
|
//####ECOSGPLCOPYRIGHTEND####
|
//####ECOSGPLCOPYRIGHTEND####
|
//==========================================================================
|
//==========================================================================
|
//#####DESCRIPTIONBEGIN####
|
//#####DESCRIPTIONBEGIN####
|
//
|
//
|
// Author(s): nickg
|
// Author(s): nickg
|
// Contributors: nickg, jlarmour, dmoseley
|
// Contributors: nickg, jlarmour, dmoseley
|
// Date: 2000-07-14
|
// Date: 2000-07-14
|
// Purpose: HAL miscellaneous functions
|
// Purpose: HAL miscellaneous functions
|
// Description: This file contains miscellaneous functions provided by the
|
// Description: This file contains miscellaneous functions provided by the
|
// HAL.
|
// HAL.
|
//
|
//
|
//####DESCRIPTIONEND####
|
//####DESCRIPTIONEND####
|
//
|
//
|
//========================================================================*/
|
//========================================================================*/
|
|
|
#include <pkgconf/hal.h>
|
#include <pkgconf/hal.h>
|
|
|
#include <cyg/infra/cyg_type.h> // Base types
|
#include <cyg/infra/cyg_type.h> // Base types
|
#include <cyg/infra/cyg_trac.h> // tracing macros
|
#include <cyg/infra/cyg_trac.h> // tracing macros
|
#include <cyg/infra/cyg_ass.h> // assertion macros
|
#include <cyg/infra/cyg_ass.h> // assertion macros
|
|
|
#include <cyg/hal/hal_intr.h>
|
#include <cyg/hal/hal_intr.h>
|
|
|
#define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
|
#define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
|
#include <cyg/hal/hal_arch.h>
|
#include <cyg/hal/hal_arch.h>
|
#include <cyg/hal/var_arch.h>
|
#include <cyg/hal/var_arch.h>
|
#include <cyg/hal/plf_io.h>
|
#include <cyg/hal/plf_io.h>
|
#include <cyg/hal/hal_cache.h>
|
#include <cyg/hal/hal_cache.h>
|
|
|
/*------------------------------------------------------------------------*/
|
/*------------------------------------------------------------------------*/
|
// Array which stores the configured priority levels for the configured
|
// Array which stores the configured priority levels for the configured
|
// interrupts.
|
// interrupts.
|
|
|
volatile CYG_BYTE hal_interrupt_level[CYGNUM_HAL_ISR_COUNT];
|
volatile CYG_BYTE hal_interrupt_level[CYGNUM_HAL_ISR_COUNT];
|
|
|
/*------------------------------------------------------------------------*/
|
/*------------------------------------------------------------------------*/
|
|
|
void hal_variant_init(void)
|
void hal_variant_init(void)
|
{
|
{
|
}
|
}
|
|
|
/*
|
/*
|
* Uncomment the following to allow for dynamic cache sizing.
|
* Uncomment the following to allow for dynamic cache sizing.
|
* Currently we are going to assume the exact part specified in the ecosconfig stuff.
|
* Currently we are going to assume the exact part specified in the ecosconfig stuff.
|
* Perhaps in the near future this can all be done dynamically.
|
* Perhaps in the near future this can all be done dynamically.
|
*/
|
*/
|
/* define DYNAMIC_CACHE_SIZING */
|
/* define DYNAMIC_CACHE_SIZING */
|
|
|
#if 0
|
#if 0
|
#ifndef DYNAMIC_CACHE_SIZING
|
#ifndef DYNAMIC_CACHE_SIZING
|
#warning " \n\
|
#warning " \n\
|
STILL NEED TO IMPLEMENT DYNAMIC_CACHE_SIZING. \n\
|
STILL NEED TO IMPLEMENT DYNAMIC_CACHE_SIZING. \n\
|
ALSO, the HAL_PLATFORM_CPU/etc defines need to be dynamic. \n\
|
ALSO, the HAL_PLATFORM_CPU/etc defines need to be dynamic. \n\
|
ALSO, need to do big endian stuff as well. \n\
|
ALSO, need to do big endian stuff as well. \n\
|
Determine if network debug is necessary. \n\
|
Determine if network debug is necessary. \n\
|
Remove MIPS memc_init code"
|
Remove MIPS memc_init code"
|
#endif
|
#endif
|
#endif
|
#endif
|
|
|
/*------------------------------------------------------------------------*/
|
/*------------------------------------------------------------------------*/
|
// Initialize the caches
|
// Initialize the caches
|
|
|
int hal_init_icache(unsigned long config1_val)
|
int hal_init_icache(unsigned long config1_val)
|
{
|
{
|
#ifdef DYNAMIC_CACHE_SIZING
|
#ifdef DYNAMIC_CACHE_SIZING
|
int icache_linesize, icache_assoc, icache_sets, icache_lines, icache_size;
|
int icache_linesize, icache_assoc, icache_sets, icache_lines, icache_size;
|
unsigned long cache_addr;
|
unsigned long cache_addr;
|
|
|
switch (config1_val & CONFIG1_IL)
|
switch (config1_val & CONFIG1_IL)
|
{
|
{
|
case CONFIG1_ICACHE_LINE_SIZE_16_BYTES: icache_linesize = 16; break;
|
case CONFIG1_ICACHE_LINE_SIZE_16_BYTES: icache_linesize = 16; break;
|
case CONFIG1_ICACHE_NOT_PRESET: return -1; break;
|
case CONFIG1_ICACHE_NOT_PRESET: return -1; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
switch (config1_val & CONFIG1_IA)
|
switch (config1_val & CONFIG1_IA)
|
{
|
{
|
case CONFIG1_ICACHE_DIRECT_MAPPED: icache_assoc = 1; break;
|
case CONFIG1_ICACHE_DIRECT_MAPPED: icache_assoc = 1; break;
|
case CONFIG1_ICACHE_2_WAY: icache_assoc = 2; break;
|
case CONFIG1_ICACHE_2_WAY: icache_assoc = 2; break;
|
case CONFIG1_ICACHE_3_WAY: icache_assoc = 3; break;
|
case CONFIG1_ICACHE_3_WAY: icache_assoc = 3; break;
|
case CONFIG1_ICACHE_4_WAY: icache_assoc = 4; break;
|
case CONFIG1_ICACHE_4_WAY: icache_assoc = 4; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
switch (config1_val & CONFIG1_IS)
|
switch (config1_val & CONFIG1_IS)
|
{
|
{
|
case CONFIG1_ICACHE_64_SETS_PER_WAY: icache_sets = 64; break;
|
case CONFIG1_ICACHE_64_SETS_PER_WAY: icache_sets = 64; break;
|
case CONFIG1_ICACHE_128_SETS_PER_WAY: icache_sets = 128; break;
|
case CONFIG1_ICACHE_128_SETS_PER_WAY: icache_sets = 128; break;
|
case CONFIG1_ICACHE_256_SETS_PER_WAY: icache_sets = 256; break;
|
case CONFIG1_ICACHE_256_SETS_PER_WAY: icache_sets = 256; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
icache_lines = icache_sets * icache_assoc;
|
icache_lines = icache_sets * icache_assoc;
|
icache_size = icache_lines * icache_linesize;
|
icache_size = icache_lines * icache_linesize;
|
#endif /* DYNAMIC_CACHE_SIZING */
|
#endif /* DYNAMIC_CACHE_SIZING */
|
|
|
/*
|
/*
|
* Reset does not invalidate the cache so let's do so now.
|
* Reset does not invalidate the cache so let's do so now.
|
*/
|
*/
|
HAL_ICACHE_INVALIDATE_ALL();
|
HAL_ICACHE_INVALIDATE_ALL();
|
|
|
#ifdef DYNAMIC_CACHE_SIZING
|
#ifdef DYNAMIC_CACHE_SIZING
|
return icache_size;
|
return icache_size;
|
#else
|
#else
|
return HAL_ICACHE_SIZE;
|
return HAL_ICACHE_SIZE;
|
#endif
|
#endif
|
}
|
}
|
|
|
int hal_init_dcache(unsigned long config1_val)
|
int hal_init_dcache(unsigned long config1_val)
|
{
|
{
|
#ifdef DYNAMIC_CACHE_SIZING
|
#ifdef DYNAMIC_CACHE_SIZING
|
int dcache_linesize, dcache_assoc, dcache_sets, dcache_lines, dcache_size;
|
int dcache_linesize, dcache_assoc, dcache_sets, dcache_lines, dcache_size;
|
|
|
switch (config1_val & CONFIG1_DL)
|
switch (config1_val & CONFIG1_DL)
|
{
|
{
|
case CONFIG1_DCACHE_LINE_SIZE_16_BYTES: dcache_linesize = 16; break;
|
case CONFIG1_DCACHE_LINE_SIZE_16_BYTES: dcache_linesize = 16; break;
|
case CONFIG1_DCACHE_NOT_PRESET: return -1; break;
|
case CONFIG1_DCACHE_NOT_PRESET: return -1; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
switch (config1_val & CONFIG1_DA)
|
switch (config1_val & CONFIG1_DA)
|
{
|
{
|
case CONFIG1_DCACHE_DIRECT_MAPPED: dcache_assoc = 1; break;
|
case CONFIG1_DCACHE_DIRECT_MAPPED: dcache_assoc = 1; break;
|
case CONFIG1_DCACHE_2_WAY: dcache_assoc = 2; break;
|
case CONFIG1_DCACHE_2_WAY: dcache_assoc = 2; break;
|
case CONFIG1_DCACHE_3_WAY: dcache_assoc = 3; break;
|
case CONFIG1_DCACHE_3_WAY: dcache_assoc = 3; break;
|
case CONFIG1_DCACHE_4_WAY: dcache_assoc = 4; break;
|
case CONFIG1_DCACHE_4_WAY: dcache_assoc = 4; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
switch (config1_val & CONFIG1_DS)
|
switch (config1_val & CONFIG1_DS)
|
{
|
{
|
case CONFIG1_DCACHE_64_SETS_PER_WAY: dcache_sets = 64; break;
|
case CONFIG1_DCACHE_64_SETS_PER_WAY: dcache_sets = 64; break;
|
case CONFIG1_DCACHE_128_SETS_PER_WAY: dcache_sets = 128; break;
|
case CONFIG1_DCACHE_128_SETS_PER_WAY: dcache_sets = 128; break;
|
case CONFIG1_DCACHE_256_SETS_PER_WAY: dcache_sets = 256; break;
|
case CONFIG1_DCACHE_256_SETS_PER_WAY: dcache_sets = 256; break;
|
default: /* Error */ return -1; break;
|
default: /* Error */ return -1; break;
|
}
|
}
|
|
|
dcache_lines = dcache_sets * dcache_assoc;
|
dcache_lines = dcache_sets * dcache_assoc;
|
dcache_size = dcache_lines * dcache_linesize;
|
dcache_size = dcache_lines * dcache_linesize;
|
#endif /* DYNAMIC_CACHE_SIZING */
|
#endif /* DYNAMIC_CACHE_SIZING */
|
|
|
/*
|
/*
|
* Reset does not invalidate the cache so let's do so now.
|
* Reset does not invalidate the cache so let's do so now.
|
*/
|
*/
|
HAL_DCACHE_INVALIDATE_ALL();
|
HAL_DCACHE_INVALIDATE_ALL();
|
|
|
#ifdef DYNAMIC_CACHE_SIZING
|
#ifdef DYNAMIC_CACHE_SIZING
|
return dcache_size;
|
return dcache_size;
|
#else
|
#else
|
return HAL_DCACHE_SIZE;
|
return HAL_DCACHE_SIZE;
|
#endif
|
#endif
|
}
|
}
|
|
|
void hal_c_cache_init(unsigned long config1_val)
|
void hal_c_cache_init(unsigned long config1_val)
|
{
|
{
|
volatile unsigned val;
|
volatile unsigned val;
|
|
|
if (hal_init_icache(config1_val) == -1)
|
if (hal_init_icache(config1_val) == -1)
|
{
|
{
|
/* Error */
|
/* Error */
|
;
|
;
|
}
|
}
|
|
|
if (hal_init_dcache(config1_val) == -1)
|
if (hal_init_dcache(config1_val) == -1)
|
{
|
{
|
/* Error */
|
/* Error */
|
;
|
;
|
}
|
}
|
|
|
// enable cached KSEG0
|
// enable cached KSEG0
|
asm volatile("mfc0 %0,$16;" : "=r"(val));
|
asm volatile("mfc0 %0,$16;" : "=r"(val));
|
val &= ~3;
|
val &= ~3;
|
asm volatile("mtc0 %0,$16;" : : "r"(val));
|
asm volatile("mtc0 %0,$16;" : : "r"(val));
|
}
|
}
|
|
|
void hal_icache_sync(void)
|
void hal_icache_sync(void)
|
{
|
{
|
HAL_ICACHE_INVALIDATE_ALL();
|
HAL_ICACHE_INVALIDATE_ALL();
|
}
|
}
|
|
|
void hal_dcache_sync(void)
|
void hal_dcache_sync(void)
|
{
|
{
|
HAL_DCACHE_INVALIDATE_ALL();
|
HAL_DCACHE_INVALIDATE_ALL();
|
}
|
}
|
|
|
/*------------------------------------------------------------------------*/
|
/*------------------------------------------------------------------------*/
|
/* End of var_misc.c */
|
/* End of var_misc.c */
|
|
|
