1/* ********************************************************************* 2 * Broadcom Common Firmware Environment (CFE) 3 * 4 * Physical Memory (arena) manager File: rm7000_arena.c 5 * 6 * This module describes the physical memory available to the 7 * firmware. 8 * 9 * Author: Mitch Lichtenberg (mpl@broadcom.com) 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 "sbmips.h" 49 50#include "lib_types.h" 51#include "lib_string.h" 52#include "lib_queue.h" 53#include "lib_malloc.h" 54#include "lib_printf.h" 55#include "lib_arena.h" 56 57#include "cfe_error.h" 58 59#include "cfe.h" 60#include "cfe_mem.h" 61 62#include "initdata.h" 63 64#define _NOPROTOS_ 65#include "cfe_boot.h" 66#undef _NOPROTOS_ 67 68 69/* ********************************************************************* 70 * Macros 71 ********************************************************************* */ 72 73#define ARENA_RANGE(bottom,top,type) arena_markrange(&cfe_arena,(uint64_t)(bottom), \ 74 (uint64_t)(top)-(uint64_t)bottom+1,(type),NULL) 75 76#define MEG (1024*1024) 77#define KB 1024 78#define PAGESIZE 4096 79#define CFE_BOOTAREA_SIZE (256*KB) 80#define CFE_BOOTAREA_ADDR 0x20000000 81 82/* ********************************************************************* 83 * Globals 84 ********************************************************************* */ 85 86extern arena_t cfe_arena; 87 88unsigned int mem_bootarea_start; 89unsigned int mem_bootarea_size; 90 91void rm7000_arena_init(void); 92void rm7000_pagetable_init(uint64_t *ptaddr,unsigned int physaddr); 93 94 95/* ********************************************************************* 96 * rm7000_arena_init() 97 * 98 * Create the initial map of physical memory 99 * 100 * Input parameters: 101 * nothing 102 * 103 * Return value: 104 * nothing 105 ********************************************************************* */ 106 107void rm7000_arena_init(void) 108{ 109 int64_t memleft; 110 int64_t mem256 = (256*1024*1024); /* 256 MBytes */ 111 int64_t memamt; 112 113 arena_init(&cfe_arena,0x0,0x100000000); 114 115 /* 116 * Mark the ranges from the RM7000's memory map 117 */ 118 119 ARENA_RANGE(0x0000000000,0x000FFFFFFF,MEMTYPE_DRAM_NOTINSTALLED); 120 121 /* 122 * Mark LDT and PCI regions 123 */ 124 125 126 /* 127 * Now, fix up the map with what is known about *this* system. 128 * 129 * Do each 256MB chunk. 130 */ 131 132 memleft = ((int64_t) mem_totalsize) << 20; 133 134 memamt = (memleft > mem256) ? mem256 : memleft; 135 136 arena_markrange(&cfe_arena,0x00000000,memamt,MEMTYPE_DRAM_AVAILABLE,NULL); 137 138 /* 139 * Note: we don't deal with RM7000 boards with >256MB memory. Big deal. 140 */ 141 142 /* 143 * Do the boot ROM 144 */ 145 146 arena_markrange(&cfe_arena,0x1FC00000,2*1024*1024,MEMTYPE_BOOTROM,NULL); 147 148} 149 150 151/* ********************************************************************* 152 * RM7000_PAGETABLE_INIT(ptaddr,physaddr) 153 * 154 * This routine constructs the page table. 256KB is mapped 155 * starting at physical address 'physaddr' - the resulting 156 * table entries are placed at 'ptaddr' 157 * 158 * Input parameters: 159 * ptaddr - base of page table 160 * physaddr - starting physical addr of area to map 161 * 162 * Return value: 163 * nothing 164 ********************************************************************* */ 165 166void rm7000_pagetable_init(uint64_t *ptaddr,unsigned int physaddr) 167{ 168 int idx; 169 170 for (idx = 0; idx < (CFE_BOOTAREA_SIZE/PAGESIZE); idx++) { 171 ptaddr[idx] = (physaddr >> 6) | 172 V_TLBLO_CALG(K_CALG_NONCOHERENT) | 173 M_TLBLO_V | 174 M_TLBLO_D; 175 physaddr += PAGESIZE; 176 } 177 178} 179 180