init.S 2.8 KB

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  1. /*
  2. * (C) Copyright 2008
  3. * Feng Kan, Applied Micro Circuits Corp., fkan@amcc.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 <config.h>
  25. #include <asm/mmu.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. /*
  42. * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
  43. * speed up boot process. It is patched after relocation to enable SA_I
  44. */
  45. tlbentry(0xff000000, SZ_16M, 0xff000000, 4, AC_RWX | SA_G)
  46. /*
  47. * TLB entries for SDRAM are not needed on this platform.
  48. * They are dynamically generated in the SPD DDR(2) detection
  49. * routine.
  50. */
  51. /* Although 512 KB, map 256k at a time */
  52. tlbentry(CONFIG_SYS_ISRAM_BASE, SZ_256K, 0x00000000, 4, AC_RWX | SA_I)
  53. tlbentry(CONFIG_SYS_ISRAM_BASE + 0x40000, SZ_256K, 0x00040000, 4, AC_RWX | SA_I)
  54. tlbentry(CONFIG_SYS_OPER_FLASH, SZ_16M, 0xE7000000, 4,AC_RWX | SA_IG)
  55. /*
  56. * Peripheral base
  57. */
  58. tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_16K, 0xEF600000, 4, AC_RW | SA_IG)
  59. tlbentry(CONFIG_SYS_PCIE0_XCFGBASE,SZ_16M, 0x00000000, 0xC, AC_RW | SA_IG)
  60. tlbentry(CONFIG_SYS_PCIE1_XCFGBASE,SZ_16M, 0x10000000, 0xC, AC_RW | SA_IG)
  61. tlbentry(CONFIG_SYS_PCIE2_XCFGBASE,SZ_16M, 0x20000000, 0xC, AC_RW | SA_IG)
  62. tlbentry(CONFIG_SYS_PCIE0_MEMBASE, SZ_256M, 0x00000000, 0xD, AC_RW | SA_IG)
  63. tlbentry(CONFIG_SYS_PCIE1_MEMBASE, SZ_256M, 0x00000000, 0xE, AC_RW | SA_IG)
  64. tlbentry(CONFIG_SYS_PCIE0_REGBASE, SZ_64K, 0x30000000, 0xC, AC_RW | SA_IG)
  65. tlbentry(CONFIG_SYS_PCIE1_REGBASE, SZ_64K, 0x30010000, 0xC, AC_RW | SA_IG)
  66. tlbentry(CONFIG_SYS_PCIE2_REGBASE, SZ_64K, 0x30020000, 0xC, AC_RW | SA_IG)
  67. tlbtab_end