release/src-rt-6.x.4708/cfe/cfe/arch/arm/cpu/armv7/src/armv7_arena.c

   1 /*  *********************************************************************
   2     *  Broadcom Common Firmware Environment (CFE)
   3     *
   4     *  Physical Memory (arena) manager          File: armv7_arena.c
   5     *
   6     *  This module describes the physical memory available to the
   7     *  firmware.
   8     *
   9     *  Author:
  10     *
  11     *********************************************************************
  12     *
  13     *  Copyright 2000,2001,2002,2003
  14     *  Broadcom Corporation. All rights reserved.
  15     *
  16     *  This software is furnished under license and may be used and
  17     *  copied only in accordance with the following terms and
  18     *  conditions.  Subject to these conditions, you may download,
  19     *  copy, install, use, modify and distribute modified or unmodified
  20     *  copies of this software in source and/or binary form.  No title
  21     *  or ownership is transferred hereby.
  22     *
  23     *  1) Any source code used, modified or distributed must reproduce
  24     *     and retain this copyright notice and list of conditions
  25     *     as they appear in the source file.
  26     *
  27     *  2) No right is granted to use any trade name, trademark, or
  28     *     logo of Broadcom Corporation.  The "Broadcom Corporation"
  29     *     name may not be used to endorse or promote products derived
  30     *     from this software without the prior written permission of
  31     *     Broadcom Corporation.
  32     *
  33     *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
  34     *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
  35     *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  36     *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
  37     *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
  38     *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
  39     *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  40     *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  41     *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  42     *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  43     *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  44     *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
  45     *     THE POSSIBILITY OF SUCH DAMAGE.
  46     ********************************************************************* */
  47
  48 #include "lib_types.h"
  49 #include "lib_string.h"
  50 #include "lib_queue.h"
  51 #include "lib_malloc.h"
  52 #include "lib_printf.h"
  53 #include "lib_arena.h"
  54
  55 #include "cfe_error.h"
  56
  57 #include "cfe.h"
  58 #include "cfe_mem.h"
  59
  60 #include "initdata.h"
  61
  62 #define _NOPROTOS_
  63 #include "cfe_boot.h"
  64 #undef _NOPROTOS_
  65
  66
  67 /*  *********************************************************************
  68     *  Macros
  69     ********************************************************************* */
  70
  71 #define ARENA_RANGE(bottom,top,type) arena_markrange(&cfe_arena,(uint64_t)(bottom), \
  72                                      (uint64_t)(top)-(uint64_t)bottom+1,(type),NULL)
  73
  74 #define MEG     (1024*1024)
  75 #define KB      1024
  76 #define PAGESIZE 4096
  77 #define CFE_BOOTAREA_SIZE (256*KB)
  78 #define CFE_BOOTAREA_ADDR 0x20000000
  79
  80 /*  *********************************************************************
  81     *  Globals
  82     ********************************************************************* */
  83
  84 extern arena_t cfe_arena;
  85
  86 void armv7_arena_init(void);
  87 void armv7_pagetable_init(uint64_t *ptaddr,unsigned int physaddr);
  88
  89
  90 /*  *********************************************************************
  91     *  armv7_arena_init()
  92     *
  93     *  Create the initial map of physical memory
  94     *
  95     *  Input parameters:
  96     *      nothing
  97     *
  98     *  Return value:
  99     *      nothing
 100     ********************************************************************* */
 101
 102 void armv7_arena_init(void)
 103 {
 104     int64_t memleft;
 105
 106     arena_init(&cfe_arena,0x0,0x100000000LL);   /* 2^32 physical bytes */
 107
 108     /*
 109      * Mark the ranges from the SB1250's memory map
 110      */
 111
 112     ARENA_RANGE(0x0000000000,0x000FFFFFFF,MEMTYPE_DRAM_NOTINSTALLED);
 113
 114     /*
 115      * Now, fix up the map with what is known about *this* system.
 116      *
 117      * Do each 256MB chunk.
 118      */
 119
 120     memleft = ((int64_t)mem_totalsize) << 10;
 121
 122     arena_markrange(&cfe_arena,0x00000000,memleft,MEMTYPE_DRAM_AVAILABLE,NULL);
 123
 124     /*
 125      * Do the boot ROM
 126      */
 127
 128     arena_markrange(&cfe_arena,0xFFFF0000,2*1024*1024,MEMTYPE_BOOTROM,NULL);
 129
 130 }
 131
 132
 133 /*  *********************************************************************
 134     *  ARMV7_PAGETABLE_INIT(ptaddr,physaddr)
 135     *
 136     *  This routine constructs the page table.  256KB is mapped
 137     *  starting at physical address 'physaddr' - the resulting
 138     *  table entries are placed at 'ptaddr'
 139     *
 140     *  Input parameters:
 141     *      ptaddr - base of page table
 142     *      physaddr - starting physical addr of area to map
 143     *
 144     *  Return value:
 145     *      nothing
 146     ********************************************************************* */
 147
 148 void armv7_pagetable_init(uint64_t *ptaddr,unsigned int physaddr)
 149 {
 150         /* We do it in cfe_l1cache_on() */
 151 }