source: mainline/kernel/generic/include/config.h@ 5a77550

/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup generic
 * @{
 */
/** @file
 */

#ifndef KERN_CONFIG_H_
#define KERN_CONFIG_H_

#include <arch/mm/page.h>

#define ONE_FRAME    0
#define TWO_FRAMES   1
#define FOUR_FRAMES  2

#define STACK_FRAMES  TWO_FRAMES
#define STACK_SIZE    ((1 << STACK_FRAMES) << PAGE_WIDTH)

#define CONFIG_INIT_TASKS        32
#define CONFIG_TASK_NAME_BUFLEN  32

/**
 * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ
 * requests.
 */
#define DATA_XFER_LIMIT  (64 * 1024)

#ifndef __ASM__

#include <typedefs.h>

typedef struct {
        uintptr_t paddr;
        size_t size;
        char name[CONFIG_TASK_NAME_BUFLEN];
} init_task_t;

typedef struct {
        size_t cnt;
        init_task_t tasks[CONFIG_INIT_TASKS];
} init_t;

/** Boot allocations.
 *
 * Allocatations made by the boot that are meant to be used by the kernel
 * are all recorded in the ballocs_t type.
 */
typedef struct {
        uintptr_t base;
        size_t size;
} ballocs_t;

typedef struct {
        /** Number of processors detected. */
        unsigned int cpu_count;
        /** Number of processors that are up and running. */
        volatile size_t cpu_active;
        
        uintptr_t base;
        /** Size of memory in bytes taken by kernel and stack. */
        size_t kernel_size;
        
        /** Base adddress of initial stack. */
        uintptr_t stack_base;
        /** Size of initial stack. */
        size_t stack_size;

        bool identity_configured;
        /** Base address of the kernel identity mapped memory. */
        uintptr_t identity_base;
        /** Size of the kernel identity mapped memory. */
        size_t identity_size;

        bool non_identity_configured;   

        /** End of physical memory. */
        uint64_t physmem_end;
} config_t;

extern config_t config;
extern init_t init;
extern ballocs_t ballocs;

#endif /* __ASM__ */

#endif

/** @}
 */