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bootloader/u-boot_2015_04/board/pcs440ep/init.S 1.78 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * (C) Copyright 2006
   * Stefan Roese, DENX Software Engineering, sr@denx.de.
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <asm-offsets.h>
  #include <ppc_asm.tmpl>
  #include <asm/mmu.h>
  #include <config.h>
  
  /**************************************************************************
   * TLB TABLE
   *
   * This table is used by the cpu boot code to setup the initial tlb
   * entries. Rather than make broad assumptions in the cpu source tree,
   * this table lets each board set things up however they like.
   *
   *  Pointer to the table is returned in r1
   *
   *************************************************************************/
  
      .section .bootpg,"ax"
      .globl tlbtab
  
  tlbtab:
  	tlbtab_start
  
  	/*
  	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
  	 * speed up boot process. It is patched after relocation to enable SA_I
  	 */
  	tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 0, AC_RWX | SA_G/*|SA_I*/)
  
  	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
  	tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_RWX | SA_G )
  
  	/*
  	 * TLB entries for SDRAM are not needed on this platform.
  	 * They are dynamically generated in the SPD DDR detection
  	 * routine.
  	 */
  
  	tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE, 0, AC_RW | SA_IG )
  
  	/* PCI */
  	tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 0, AC_RW | SA_IG )
  	tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 0, AC_RW | SA_IG )
  	tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 0, AC_RW | SA_IG )
  	tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 0, AC_RW | SA_IG )
  
  	/* USB 2.0 Device */
  	tlbentry( CONFIG_SYS_USB_DEVICE, SZ_1K, 0x50000000, 0, AC_RW | SA_IG )
  
  	tlbtab_end