board/amcc/bluestone/init.S

   1 /*
   2  * Copyright (c) 2010, Applied Micro Circuits Corporation
   3  * Author: Tirumala R Marri <tmarri@apm.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <asm-offsets.h>
   9 #include <ppc_asm.tmpl>
  10 #include <config.h>
  11 #include <asm/mmu.h>
  12 #include <asm/ppc4xx.h>
  13
  14 /**************************************************************************
  15  * TLB TABLE
  16  *
  17  * This table is used by the cpu boot code to setup the initial tlb
  18  * entries. Rather than make broad assumptions in the cpu source tree,
  19  * this table lets each board set things up however they like.
  20  *
  21  *  Pointer to the table is returned in r1
  22  *
  23  *************************************************************************/
  24         .section .bootpg,"ax"
  25         .globl tlbtab
  26
  27 tlbtab:
  28         tlbtab_start
  29
  30         /* TLB 0 */
  31         tlbentry(CONFIG_SYS_BOOT_BASE_ADDR, SZ_16M, CONFIG_SYS_BOOT_BASE_ADDR,
  32         4, AC_RWX | SA_G)
  33
  34         /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
  35         tlbentry(CONFIG_SYS_INIT_RAM_ADDR, SZ_4K, CONFIG_SYS_INIT_RAM_ADDR,
  36                         0, AC_RWX | SA_G)
  37
  38         /* TLB-entry for OCM */
  39         tlbentry(CONFIG_SYS_OCM_BASE, SZ_64K, 0x00040000, 4,
  40                         AC_RWX | SA_I)
  41
  42         /* TLB-entry for Local Configuration registers => peripherals */
  43         tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_16K,
  44                         CONFIG_SYS_PERIPHERAL_BASE, 4, AC_RWX | SA_IG)
  45         tlbtab_end