board/socrates/tlb.c

   1 /*
   2  * (C) Copyright 2008
   3  * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
   4  *
   5  * Copyright 2008 Freescale Semiconductor, Inc.
   6  *
   7  * (C) Copyright 2000
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #include <common.h>
  30 #include <asm/mmu.h>
  31
  32 struct fsl_e_tlb_entry tlb_table[] = {
  33         /* TLB 0 - for temp stack in cache */
  34         SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR, CONFIG_SYS_INIT_RAM_ADDR,
  35                       MAS3_SX|MAS3_SW|MAS3_SR, 0,
  36                       0, 0, BOOKE_PAGESZ_4K, 0),
  37         SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
  38                       MAS3_SX|MAS3_SW|MAS3_SR, 0,
  39                       0, 0, BOOKE_PAGESZ_4K, 0),
  40         SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
  41                       MAS3_SX|MAS3_SW|MAS3_SR, 0,
  42                       0, 0, BOOKE_PAGESZ_4K, 0),
  43         SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
  44                       MAS3_SX|MAS3_SW|MAS3_SR, 0,
  45                       0, 0, BOOKE_PAGESZ_4K, 0),
  46
  47
  48         /*
  49          * TLB 1:       64M     Non-cacheable, guarded
  50          * 0xfc000000   64M     FLASH
  51          * Out of reset this entry is only 4K.
  52          */
  53         SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE,
  54                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  55                       0, 1, BOOKE_PAGESZ_64M, 1),
  56
  57         /*
  58          * TLB 2:       256M    Non-cacheable, guarded
  59          * 0x80000000   256M    PCI1 MEM First half
  60          */
  61         SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS, CONFIG_SYS_PCI1_MEM_PHYS,
  62                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  63                       0, 2, BOOKE_PAGESZ_256M, 1),
  64
  65         /*
  66          * TLB 3:       256M    Non-cacheable, guarded
  67          * 0x90000000   256M    PCI1 MEM Second half
  68          */
  69         SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000, CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000,
  70                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  71                       0, 3, BOOKE_PAGESZ_256M, 1),
  72
  73 #if defined(CONFIG_SYS_FPGA_BASE)
  74         /*
  75          * TLB 4:       1M      Non-cacheable, guarded
  76          * 0xc0000000   1M      FPGA and NAND
  77          */
  78         SET_TLB_ENTRY(1, CONFIG_SYS_FPGA_BASE, CONFIG_SYS_FPGA_BASE,
  79                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  80                       0, 4, BOOKE_PAGESZ_1M, 1),
  81 #endif
  82
  83         /*
  84          * TLB 5:       64M     Non-cacheable, guarded
  85          * 0xc8000000   16M     LIME GDC framebuffer
  86          * 0xc9fc0000   256K    LIME GDC MMIO
  87          * (0xcbfc0000  256K    LIME GDC MMIO)
  88          * MMIO is relocatable and could be at 0xcbfc0000
  89          */
  90         SET_TLB_ENTRY(1, CONFIG_SYS_LIME_BASE, CONFIG_SYS_LIME_BASE,
  91                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  92                       0, 5, BOOKE_PAGESZ_64M, 1),
  93
  94         /*
  95          * TLB 6:       64M     Non-cacheable, guarded
  96          * 0xe000_0000  1M      CCSRBAR
  97          * 0xe200_0000  16M     PCI1 IO
  98          */
  99         SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
 100                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 101                       0, 6, BOOKE_PAGESZ_64M, 1),
 102
 103 #if !defined(CONFIG_SPD_EEPROM)
 104         /*
 105          * TLB 7+8:     512M    DDR, cache disabled (needed for memory test)
 106          * 0x00000000  512M     DDR System memory
 107          * Without SPD EEPROM configured DDR, this must be setup manually.
 108          * Make sure the TLB count at the top of this table is correct.
 109          * Likely it needs to be increased by two for these entries.
 110          */
 111         SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
 112                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 113                       0, 7, BOOKE_PAGESZ_256M, 1),
 114
 115         SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE + 0x10000000, CONFIG_SYS_DDR_SDRAM_BASE + 0x10000000,
 116                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 117                       0, 8, BOOKE_PAGESZ_256M, 1),
 118 #endif
 119 };
 120
 121 int num_tlb_entries = ARRAY_SIZE(tlb_table);