init.S 2.1 KB

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  1. /*
  2. * Copyright (C) 2005
  3. * Travis B. Sawyer, Sandburst Corporation, tsawyer@sandburst.com
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #include <ppc_asm.tmpl>
  24. #include <asm/mmu.h>
  25. #include <config.h>
  26. #include <asm/ppc4xx.h>
  27. /**************************************************************************
  28. * TLB TABLE
  29. *
  30. * This table is used by the cpu boot code to setup the initial tlb
  31. * entries. Rather than make broad assumptions in the cpu source tree,
  32. * this table lets each board set things up however they like.
  33. *
  34. * Pointer to the table is returned in r1
  35. *
  36. *************************************************************************/
  37. .section .bootpg,"ax"
  38. .globl tlbtab
  39. tlbtab:
  40. tlbtab_start
  41. tlbentry( 0xf0000000, SZ_256M, 0xf0000000, 1, AC_RWX | SA_IG)
  42. tlbentry( CONFIG_SYS_PERIPHERAL_BASE, SZ_256M, 0x40000000, 1, AC_RW | SA_IG)
  43. tlbentry( CONFIG_SYS_ISRAM_BASE, SZ_256K, 0x80000000, 0, AC_RWX | SA_IG)
  44. tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_RWX | SA_IG )
  45. tlbentry( CONFIG_SYS_SDRAM_BASE+0x10000000, SZ_256M, 0x10000000, 0, AC_RWX | SA_IG )
  46. tlbentry( CONFIG_SYS_SDRAM_BASE+0x20000000, SZ_256M, 0x20000000, 0, AC_RWX | SA_IG )
  47. tlbentry( CONFIG_SYS_SDRAM_BASE+0x30000000, SZ_256M, 0x30000000, 0, AC_RWX | SA_IG )
  48. tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 2, AC_RW | SA_IG )
  49. tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_RW | SA_IG )
  50. tlbtab_end