init.S 1.8 KB

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  1. /*
  2. * SPDX-License-Identifier: GPL-2.0+
  3. */
  4. #include <asm-offsets.h>
  5. #include <ppc_asm.tmpl>
  6. #include <asm/mmu.h>
  7. #include <config.h>
  8. /**************************************************************************
  9. * TLB TABLE
  10. *
  11. * This table is used by the cpu boot code to setup the initial tlb
  12. * entries. Rather than make broad assumptions in the cpu source tree,
  13. * this table lets each board set things up however they like.
  14. *
  15. * Pointer to the table is returned in r1
  16. *
  17. *************************************************************************/
  18. .section .bootpg,"ax"
  19. .globl tlbtab
  20. tlbtab:
  21. tlbtab_start
  22. /*
  23. * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
  24. * speed up boot process. It is patched after relocation to enable SA_I
  25. */
  26. tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 0, AC_RWX | SA_G/*|SA_I*/)
  27. /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
  28. tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_RWX | SA_G )
  29. tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, CONFIG_SYS_SDRAM_BASE, 0, AC_RWX | SA_IG )
  30. tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE, 0, AC_RW | SA_IG )
  31. tlbentry( CONFIG_SYS_NVRAM_BASE_ADDR, SZ_256M, CONFIG_SYS_NVRAM_BASE_ADDR, 0, AC_RWX | SA_W|SA_I )
  32. /* PCI */
  33. tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 0, AC_RW | SA_IG )
  34. tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 0, AC_RW | SA_IG )
  35. tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 0, AC_RW | SA_IG )
  36. tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 0, AC_RW | SA_IG )
  37. /* USB 2.0 Device */
  38. tlbentry( CONFIG_SYS_USB_DEVICE, SZ_1K, 0x50000000, 0, AC_RW | SA_IG )
  39. tlbtab_end