tlb.c

U-BOOT,著名的Bootloader程序

/*
 * Copyright 2008 Freescale Semiconductor, Inc.
 *
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <asm/mmu.h>

struct fsl_e_tlb_entry tlb_table[] = {
	/* TLB 0 - for temp stack in cache */
	SET_TLB_ENTRY (0, CFG_INIT_RAM_ADDR, CFG_INIT_RAM_ADDR,
		       MAS3_SX | MAS3_SW | MAS3_SR, 0,
		       0, 0, BOOKE_PAGESZ_4K, 0),
	SET_TLB_ENTRY (0, CFG_INIT_RAM_ADDR + 4 * 1024,
		       CFG_INIT_RAM_ADDR + 4 * 1024,
		       MAS3_SX | MAS3_SW | MAS3_SR, 0,
		       0, 0, BOOKE_PAGESZ_4K, 0),
	SET_TLB_ENTRY (0, CFG_INIT_RAM_ADDR + 8 * 1024,
		       CFG_INIT_RAM_ADDR + 8 * 1024,
		       MAS3_SX | MAS3_SW | MAS3_SR, 0,
		       0, 0, BOOKE_PAGESZ_4K, 0),
	SET_TLB_ENTRY (0, CFG_INIT_RAM_ADDR + 12 * 1024,
		       CFG_INIT_RAM_ADDR + 12 * 1024,
		       MAS3_SX | MAS3_SW | MAS3_SR, 0,
		       0, 0, BOOKE_PAGESZ_4K, 0),

#ifndef CONFIG_TQM_BIGFLASH
	/*
	 * TLB 0, 1:	128M	Non-cacheable, guarded
	 * 0xf8000000	128M	FLASH
	 * Out of reset this entry is only 4K.
	 */
	SET_TLB_ENTRY (1, CFG_FLASH_BASE, CFG_FLASH_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 1, BOOKE_PAGESZ_64M, 1),
	SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x4000000,
		       CFG_FLASH_BASE + 0x4000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 0, BOOKE_PAGESZ_64M, 1),

	/*
	 * TLB 2:	256M	Non-cacheable, guarded
	 * 0x80000000	256M	PCI1 MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS, CFG_PCI1_MEM_PHYS,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 2, BOOKE_PAGESZ_256M, 1),

	/*
	 * TLB 3:	256M	Non-cacheable, guarded
	 * 0x90000000	256M	PCI1 MEM Second half
	 */
	SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS + 0x10000000,
		       CFG_PCI1_MEM_PHYS + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 3, BOOKE_PAGESZ_256M, 1),

#ifdef CONFIG_PCIE1
	/*
	 * TLB 4:	256M	Non-cacheable, guarded
	 * 0xc0000000	256M	PCI express MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE, CFG_PCIE1_MEM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 4, BOOKE_PAGESZ_256M, 1),

	/*
	 * TLB 5:	256M	Non-cacheable, guarded
	 * 0xd0000000	256M	PCI express MEM Second half
	 */
	SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE + 0x10000000,
		       CFG_PCIE1_MEM_BASE + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 5, BOOKE_PAGESZ_256M, 1),
#else /* !CONFIG_PCIE */
	/*
	 * TLB 4:	256M	Non-cacheable, guarded
	 * 0xc0000000	256M	Rapid IO MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_RIO_MEM_BASE, CFG_RIO_MEM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 4, BOOKE_PAGESZ_256M, 1),

	/*
	 * TLB 5:	256M	Non-cacheable, guarded
	 * 0xd0000000	256M	Rapid IO MEM Second half
	 */
	SET_TLB_ENTRY (1, CFG_RIO_MEM_BASE + 0x10000000,
		       CFG_RIO_MEM_BASE + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 5, BOOKE_PAGESZ_256M, 1),
#endif /* CONFIG_PCIE */

	/*
	 * TLB 6:	 64M	Non-cacheable, guarded
	 * 0xe0000000	  1M	CCSRBAR
	 * 0xe2000000	 16M	PCI1 IO
	 * 0xe3000000	 16M	CAN and NAND Flash
	 */
	SET_TLB_ENTRY (1, CFG_CCSRBAR, CFG_CCSRBAR_PHYS,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 6, BOOKE_PAGESZ_64M, 1),

	/*
	 * TLB 7+8:	512M	 DDR, cache disabled (needed for memory test)
	 * 0x00000000	512M	 DDR System memory
	 * Without SPD EEPROM configured DDR, this must be setup manually.
	 * Make sure the TLB count at the top of this table is correct.
	 * Likely it needs to be increased by two for these entries.
	 */
	SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE, CFG_DDR_SDRAM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 7, BOOKE_PAGESZ_256M, 1),

	SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE + 0x10000000,
		       CFG_DDR_SDRAM_BASE + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 8, BOOKE_PAGESZ_256M, 1),

#ifdef CONFIG_PCIE1
	/*
	 * TLB 9:	 16M	Non-cacheable, guarded
	 * 0xef000000	 16M	PCI express IO
	 */
	SET_TLB_ENTRY (1, CFG_PCIE1_IO_BASE, CFG_PCIE1_IO_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 9, BOOKE_PAGESZ_16M, 1),
#endif /* CONFIG_PCIE */

#else /* CONFIG_TQM_BIGFLASH */

	/*
	 * TLB 0,1,2,3:	  1G	Non-cacheable, guarded
	 * 0xc0000000	  1G	FLASH
	 * Out of reset this entry is only 4K.
	 */
	SET_TLB_ENTRY (1, CFG_FLASH_BASE, CFG_FLASH_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 3, BOOKE_PAGESZ_256M, 1),
	SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x10000000,
		       CFG_FLASH_BASE + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 2, BOOKE_PAGESZ_256M, 1),
	SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x20000000,
		       CFG_FLASH_BASE + 0x20000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 1, BOOKE_PAGESZ_256M, 1),
	SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x30000000,
		       CFG_FLASH_BASE + 0x30000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 0, BOOKE_PAGESZ_256M, 1),

	/*
	 * TLB 4:	256M	Non-cacheable, guarded
	 * 0x80000000	256M	PCI1 MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS, CFG_PCI1_MEM_PHYS,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 4, BOOKE_PAGESZ_256M, 1),

	/*
	 * TLB 5:	256M	Non-cacheable, guarded
	 * 0x90000000	256M	PCI1 MEM Second half
	 */
	SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS + 0x10000000,
		       CFG_PCI1_MEM_PHYS + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 5, BOOKE_PAGESZ_256M, 1),

#ifdef CONFIG_PCIE1
	/*
	 * TLB 6:	256M	Non-cacheable, guarded
	 * 0xc0000000	256M	PCI express MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE, CFG_PCIE1_MEM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 6, BOOKE_PAGESZ_256M, 1),
#else /* !CONFIG_PCIE */
	/*
	 * TLB 6:	256M	Non-cacheable, guarded
	 * 0xb0000000	256M	Rapid IO MEM First half
	 */
	SET_TLB_ENTRY (1, CFG_RIO_MEM_BASE, CFG_RIO_MEM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 6, BOOKE_PAGESZ_256M, 1),

#endif /* CONFIG_PCIE */

	/*
	 * TLB 7:	 64M	Non-cacheable, guarded
	 * 0xa0000000	  1M	CCSRBAR
	 * 0xa2000000	 16M	PCI1 IO
	 * 0xa3000000	 16M	CAN and NAND Flash
	 */
	SET_TLB_ENTRY (1, CFG_CCSRBAR, CFG_CCSRBAR_PHYS,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 7, BOOKE_PAGESZ_64M, 1),

	/*
	 * TLB 8+9:	512M	 DDR, cache disabled (needed for memory test)
	 * 0x00000000	512M	 DDR System memory
	 * Without SPD EEPROM configured DDR, this must be setup manually.
	 * Make sure the TLB count at the top of this table is correct.
	 * Likely it needs to be increased by two for these entries.
	 */
	SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE, CFG_DDR_SDRAM_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 8, BOOKE_PAGESZ_256M, 1),

	SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE + 0x10000000,
		       CFG_DDR_SDRAM_BASE + 0x10000000,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 9, BOOKE_PAGESZ_256M, 1),

#ifdef CONFIG_PCIE1
	/*
	 * TLB 10:	 16M	Non-cacheable, guarded
	 * 0xaf000000	 16M	PCI express IO
	 */
	SET_TLB_ENTRY (1, CFG_PCIE1_IO_BASE, CFG_PCIE1_IO_BASE,
		       MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
		       0, 10, BOOKE_PAGESZ_16M, 1),
#endif /* CONFIG_PCIE */

#endif /* CONFIG_TQM_BIGFLASH */
};

int num_tlb_entries = ARRAY_SIZE (tlb_table);