257 lines
8.0 KiB
ArmAsm
257 lines
8.0 KiB
ArmAsm
/*
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* Copyright (C) 2005 Embedded Alley Solutions, Inc.
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* Dan Malek <dan@embeddedalley.com>
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* Copied from STx GP3.
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* Updates for Silicon Tx GP3 SSA. We only support 32-bit flash
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* and DDR with SPD EEPROM configuration.
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*
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* Copyright 2004 Freescale Semiconductor.
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* Copyright (C) 2002,2003, Motorola Inc.
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* Xianghua Xiao <X.Xiao@motorola.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <ppc_asm.tmpl>
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#include <ppc_defs.h>
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#include <asm/cache.h>
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#include <asm/mmu.h>
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#include <config.h>
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#include <mpc85xx.h>
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/*
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* TLB0 and TLB1 Entries
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*
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* Out of reset, TLB1's Entry 0 maps the highest 4K for CCSRBAR.
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* However, CCSRBAR is then relocated to CFG_CCSRBAR right after
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* these TLB entries are established.
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*
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* The TLB entries for DDR are dynamically setup in spd_sdram()
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* and use TLB1 Entries 8 through 15 as needed according to the
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* size of DDR memory.
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*
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* MAS0: tlbsel, esel, nv
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* MAS1: valid, iprot, tid, ts, tsize
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* MAS2: epn, sharen, x0, x1, w, i, m, g, e
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* MAS3: rpn, u0-u3, ux, sx, uw, sw, ur, sr
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*/
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#define entry_start \
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mflr r1 ; \
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bl 0f ;
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#define entry_end \
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0: mflr r0 ; \
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mtlr r1 ; \
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blr ;
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.section .bootpg, "ax"
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.globl tlb1_entry
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tlb1_entry:
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entry_start
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/*
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* Number of TLB0 and TLB1 entries in the following table
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*/
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.long 12
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#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
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/*
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* TLB0 4K Non-cacheable, guarded
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* 0xff700000 4K Initial CCSRBAR mapping
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*
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* This ends up at a TLB0 Index==0 entry, and must not collide
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* with other TLB0 Entries.
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*/
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.long TLB1_MAS0(0, 0, 0)
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.long TLB1_MAS1(1, 0, 0, 0, 0)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,0,1,0,1,0,1)
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#else
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#error("Update the number of table entries in tlb1_entry")
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#endif
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/*
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* TLB0 16K Cacheable, non-guarded
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* 0xd001_0000 16K Temporary Global data for initialization
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*
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* Use four 4K TLB0 entries. These entries must be cacheable
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* as they provide the bootstrap memory before the memory
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* controler and real memory have been configured.
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*
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* These entries end up at TLB0 Indicies 0x10, 0x14, 0x18 and 0x1c,
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* and must not collide with other TLB0 entries.
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*/
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.long TLB1_MAS0(0, 0, 0)
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.long TLB1_MAS1(1, 0, 0, 0, 0)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR), \
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0,0,0,0,0,0,0,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR), \
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0,0,0,0,0,1,0,1,0,1)
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.long TLB1_MAS0(0, 0, 0)
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.long TLB1_MAS1(1, 0, 0, 0, 0)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 4 * 1024), \
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0,0,0,0,0,0,0,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 4 * 1024), \
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0,0,0,0,0,1,0,1,0,1)
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.long TLB1_MAS0(0, 0, 0)
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.long TLB1_MAS1(1, 0, 0, 0, 0)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 8 * 1024), \
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0,0,0,0,0,0,0,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 8 * 1024), \
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0,0,0,0,0,1,0,1,0,1)
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.long TLB1_MAS0(0, 0, 0)
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.long TLB1_MAS1(1, 0, 0, 0, 0)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 12 * 1024), \
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0,0,0,0,0,0,0,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 12 * 1024), \
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0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 0: 64M Non-cacheable, guarded
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* 0xfc000000 6M4 FLASH
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* Out of reset this entry is only 4K.
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*/
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.long TLB1_MAS0(1, 0, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_FLASH_BASE), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_FLASH_BASE), 0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 1: 256M Non-cacheable, guarded
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* 0x80000000 256M PCI1 MEM First half
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*/
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.long TLB1_MAS0(1, 1, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_PCI1_MEM_BASE), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 2: 256M Non-cacheable, guarded
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* 0x90000000 256M PCI1 MEM Second half
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*/
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.long TLB1_MAS0(1, 2, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_PCI1_MEM_BASE + 0x10000000), \
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0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE + 0x10000000), \
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0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 3: 256M Non-cacheable, guarded
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* 0xa0000000 256M PCI2 MEM First half
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*/
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.long TLB1_MAS0(1, 3, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_PCI2_MEM_BASE), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_PCI2_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 4: 256M Non-cacheable, guarded
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* 0xb0000000 256M PCI2 MEM Second half
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*/
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.long TLB1_MAS0(1, 4, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_PCI2_MEM_BASE + 0x10000000), \
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0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_PCI2_MEM_BASE + 0x10000000), \
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0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 5: 64M Non-cacheable, guarded
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* 0xe000_0000 1M CCSRBAR
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* 0xe200_0000 16M PCI1 IO
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* 0xe300_0000 16M PCI2 IO
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*/
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.long TLB1_MAS0(1, 5, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR), 0,0,0,0,0,1,0,1,0,1)
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/*
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* TLB 6: 256M Non-cacheable, guarded
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* 0xf0000000 Local bus expansion option.
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* 0xfb000000 Configuration Latch register (one word)
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* 0xfc000000 Up to 64M flash
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*/
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.long TLB1_MAS0(1, 7, 0)
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.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
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.long TLB1_MAS2(E500_TLB_EPN(CFG_LBC_OPTION_BASE), 0,0,0,0,1,0,1,0)
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.long TLB1_MAS3(E500_TLB_RPN(CFG_LBC_OPTION_BASE), 0,0,0,0,0,1,0,1,0,1)
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entry_end
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/*
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* LAW(Local Access Window) configuration:
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*
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* 0x0000_0000 0x7fff_ffff DDR 2G
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* 0x8000_0000 0x9fff_ffff PCI1 MEM 512M
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* 0xa000_0000 0xbfff_ffff PCI2 MEM 512M
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* 0xe000_0000 0xe000_ffff CCSR 1M
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* 0xe200_0000 0xe2ff_ffff PCI1 IO 16M
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* 0xe300_0000 0xe3ff_ffff PCI2 IO 16M
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* 0xf000_0000 0xfaff_ffff Local bus 128M
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* 0xfb00_0000 0xfb00_ffff Config Latch 64K
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* 0xfc00_0000 0xffff_ffff FLASH (boot bank) 64M
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*
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* Notes:
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* CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
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* If flash is 8M at default position (last 8M), no LAW needed.
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*/
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#if !defined(CONFIG_SPD_EEPROM)
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#define LAWBAR0 ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff)
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#define LAWAR0 (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M))
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#else
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#define LAWBAR0 0
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#define LAWAR0 ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN)
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#endif
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#define LAWBAR1 ((CFG_PCI1_MEM_BASE>>12) & 0xfffff)
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#define LAWAR1 (LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_512M))
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#define LAWBAR2 ((CFG_PCI2_MEM_BASE>>12) & 0xfffff)
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#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_512M))
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#define LAWBAR3 ((CFG_PCI1_IO_PHYS>>12) & 0xfffff)
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#define LAWAR3 (LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_16M))
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#define LAWBAR4 ((CFG_PCI2_IO_PHYS>>12) & 0xfffff)
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#define LAWAR4 (LAWAR_EN | LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_16M))
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/* Map the whole localbus, including flash and reset latch.
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*/
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#define LAWBAR5 ((CFG_LBC_OPTION_BASE>>12) & 0xfffff)
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#define LAWAR5 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
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.section .bootpg, "ax"
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.globl law_entry
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law_entry:
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entry_start
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.long 6
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.long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2,LAWBAR3,LAWAR3
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.long LAWBAR4,LAWAR4,LAWBAR5,LAWAR5
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entry_end
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