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Annotation of prex-old/boot/i386/pc/platform.h, Revision 1.1

1.1     ! nbrk        1: /*-
        !             2:  * Copyright (c) 2005-2006, Kohsuke Ohtani
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. Neither the name of the author nor the names of any co-contributors
        !            14:  *    may be used to endorse or promote products derived from this software
        !            15:  *    without specific prior written permission.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: #ifndef _PC_PLATFORM_H
        !            31: #define _PC_PLATFORM_H
        !            32:
        !            33: #ifdef CONFIG_MMU
        !            34: #define PAGE_OFFSET    0x80000000
        !            35: #else
        !            36: #define PAGE_OFFSET    0x00000000
        !            37: #endif
        !            38:
        !            39: #define BOOT_INFO      0x00002000
        !            40: #define BOOT_INFO_SIZE 0x00000800
        !            41: #define BOOT_STACK     0x00002800
        !            42: #define ARCHIVE_START  0x00100000
        !            43:
        !            44: #ifndef __ASSEMBLY__
        !            45: #include <boot.h>
        !            46:
        !            47: /*
        !            48:  * Page mapping
        !            49:  */
        !            50: #define phys_to_virt(p_addr)   (void *)((u_long)(p_addr) + PAGE_OFFSET)
        !            51: #define virt_to_phys(v_addr)   (void *)((u_long)(v_addr) - PAGE_OFFSET)
        !            52:
        !            53:
        !            54: #if defined(DEBUG) && defined(CONFIG_DIAG_BOCHS)
        !            55: /*
        !            56:  * Output Bochs virtual debug port.
        !            57:  */
        !            58: static __inline void
        !            59: putc(int c)
        !            60: {
        !            61:        __asm__ __volatile__(
        !            62:                "inb $0xe9, %%al\n\t"
        !            63:                "cmpb $0xe9, %%al\n\t"
        !            64:                "jne 1f\n\t"
        !            65:                "movb %%bl, %%al\n\t"
        !            66:                "outb %%al, $0xe9\n\t"
        !            67:                "1:\n\t"
        !            68:                :
        !            69:                : "b" (c));
        !            70: }
        !            71: #endif
        !            72:
        !            73: extern void setup_bootinfo(struct boot_info **);
        !            74:
        !            75: #endif /* !__ASSEMBLY__ */
        !            76: #endif /* !_PC_PLATFORM_H */