init.S 3.0 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879
  1. /*
  2. *
  3. * See file CREDITS for list of people who contributed to this
  4. * project.
  5. *
  6. * This program is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU General Public License as
  8. * published by the Free Software Foundation; either version 2 of
  9. * the License, or (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with this program; if not, write to the Free Software
  18. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19. * MA 02111-1307 USA
  20. */
  21. #include <ppc_asm.tmpl>
  22. #include <config.h>
  23. #include <asm/mmu.h>
  24. /**************************************************************************
  25. * TLB TABLE
  26. *
  27. * This table is used by the cpu boot code to setup the initial tlb
  28. * entries. Rather than make broad assumptions in the cpu source tree,
  29. * this table lets each board set things up however they like.
  30. *
  31. * Pointer to the table is returned in r1
  32. *
  33. *************************************************************************/
  34. .section .bootpg,"ax"
  35. .globl tlbtab
  36. tlbtab:
  37. tlbtab_start
  38. /* vxWorks needs this entry for the Machine Check interrupt, */
  39. /* tlbentry( 0x40000000, SZ_256M, 0, 1, AC_R|AC_W|AC_X|SA_G|SA_I ) */
  40. /*
  41. * BOOT_CS (FLASH) must be second. Before relocation SA_I can be off to use the
  42. * speed up boot process. It is patched after relocation to enable SA_I
  43. */
  44. tlbentry( CFG_BOOT_BASE_ADDR, SZ_1M, CFG_BOOT_BASE_ADDR, 1, AC_R|AC_W|AC_X|SA_G )
  45. /* TLB-entry for PCI Memory */
  46. tlbentry( CFG_PCI_MEMBASE, SZ_256M, CFG_PCI_MEMBASE, 1, AC_R|AC_W|SA_G|SA_I )
  47. tlbentry( CFG_PCI_MEMBASE1, SZ_256M, CFG_PCI_MEMBASE1, 1, AC_R|AC_W|SA_G|SA_I )
  48. tlbentry( CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 1, AC_R|AC_W|SA_G|SA_I )
  49. tlbentry( CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 1, AC_R|AC_W|SA_G|SA_I )
  50. /* TLB-entry for EBC (CFG_CPLD) */
  51. /* tlbentry( CFG_CPLD, SZ_1K, CFG_CPLD, 1, AC_R|AC_W|AC_X|SA_G|SA_I ) */
  52. /* CAN */
  53. tlbentry( CFG_CS_1, SZ_16M, CFG_CS_1, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  54. /* IMC + CPLD */
  55. tlbentry( CFG_CS_2, SZ_16M, CFG_CS_2, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  56. tlbentry( CFG_CS_2 + 0x1000000, SZ_16M, CFG_CS_2 + 0x1000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  57. /* IMC-Fast */
  58. tlbentry( CFG_CS_3, SZ_16M, CFG_CS_3, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  59. tlbentry( CFG_CS_3 + 0x1000000, SZ_16M, CFG_CS_3 + 0x1000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  60. /* TLB-entry for Internal Registers & OCM */
  61. tlbentry( CFG_PCI_BASE, SZ_16M, 0xe0000000, 0, AC_R|AC_W|AC_X|SA_I )
  62. /*TLB-entry PCI registers*/
  63. tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
  64. /* TLB-entry for peripherals */
  65. tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I)
  66. /* TLB for SDRAM will be added by initdram (sdram.c) */
  67. tlbtab_end