129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/****************************************************************************
|
|
* arch/or1k/include/arch.h
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/* This file should never be included directly but, rather,
|
|
* only indirectly through nuttx/arch.h
|
|
*/
|
|
|
|
#ifndef __ARCH_OR1K_INCLUDE_ARCH_H
|
|
#define __ARCH_OR1K_INCLUDE_ARCH_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#ifndef __ASSEMBLY__
|
|
# include <stdint.h>
|
|
# include <nuttx/pgalloc.h>
|
|
# include <nuttx/addrenv.h>
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
#if CONFIG_MM_PGSIZE != 4096
|
|
# error Only pages sizes of 4096 are currently supported (CONFIG_ARCH_ADDRENV)
|
|
#endif
|
|
|
|
/* Convert 4KiB pages to 1MiB sections */
|
|
|
|
# define __PG2SECT_SHIFT (20 - MM_PGSHIFT)
|
|
# define __PG2SECT_MASK ((1 << __PG2SECT_SHIFT) - 1)
|
|
|
|
# define ARCH_PG2SECT(p) (((p) + __PG2SECT_MASK) >> __PG2SECT_SHIFT)
|
|
# define ARCH_SECT2PG(s) ((s) << __PG2SECT_SHIFT)
|
|
|
|
# define ARCH_TEXT_NSECTS ARCH_PG2SECT(CONFIG_ARCH_TEXT_NPAGES)
|
|
# define ARCH_DATA_NSECTS ARCH_PG2SECT(CONFIG_ARCH_DATA_NPAGES)
|
|
# define ARCH_HEAP_NSECTS ARCH_PG2SECT(CONFIG_ARCH_HEAP_NPAGES)
|
|
|
|
# ifdef CONFIG_ARCH_VMA_MAPPING
|
|
# define ARCH_SHM_NSECTS ARCH_PG2SECT(ARCH_SHM_MAXPAGES)
|
|
# endif
|
|
|
|
# ifdef CONFIG_ARCH_STACK_DYNAMIC
|
|
# define ARCH_STACK_NSECTS ARCH_PG2SECT(CONFIG_ARCH_STACK_NPAGES)
|
|
# endif
|
|
#endif /* CONFIG_ARCH_ADDRENV */
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
/* The task group resources are retained in a single structure, task_group_s
|
|
* that is defined in the header file nuttx/include/nuttx/sched.h. The type
|
|
* arch_addrenv_t must be defined by platform specific logic in
|
|
* nuttx/arch/<architecture>/include/arch.h.
|
|
*
|
|
* These tables would hold the physical address of the level 2 page tables.
|
|
* All would be initially NULL and would not be backed up with physical
|
|
* memory until mappings in the level 2 page table are required.
|
|
*/
|
|
|
|
struct arch_addrenv_s
|
|
{
|
|
/* Level 1 page table entries for each group section */
|
|
|
|
uintptr_t *text[ARCH_TEXT_NSECTS];
|
|
uintptr_t *data[ARCH_DATA_NSECTS];
|
|
#ifdef CONFIG_BUILD_KERNEL
|
|
uintptr_t *heap[ARCH_HEAP_NSECTS];
|
|
#ifdef CONFIG_ARCH_VMA_MAPPING
|
|
uintptr_t *shm[ARCH_SHM_NSECTS];
|
|
#endif
|
|
|
|
/* Initial heap allocation (in bytes). This exists only provide an
|
|
* indirect path for passing the size of the initial heap to the heap
|
|
* initialization logic. These operations are separated in time and
|
|
* architecture. REVISIT: I would like a better way to do this.
|
|
*/
|
|
|
|
size_t heapsize;
|
|
#endif
|
|
};
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ARCH_OR1K_INCLUDE_ARCH_H */
|