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/*
* Copyright 2004-2007 Freescale Semiconductor.
* Copyright 2002,2003, Motorola Inc.
*
* 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 <ppc_asm.tmpl>
#include <ppc_defs.h>
#include <asm/cache.h>
#include <asm/mmu.h>
#include <config.h>
#include <mpc85xx.h>
/*
* TLB0 and TLB1 Entries
*
* Out of reset, TLB1's Entry 0 maps the highest 4K for CCSRBAR.
* However, CCSRBAR is then relocated to CFG_CCSRBAR right after
* these TLB entries are established.
*
* The TLB entries for DDR are dynamically setup in spd_sdram()
* and use TLB1 Entries 8 through 15 as needed according to the
* size of DDR memory.
*
* MAS0: tlbsel, esel, nv
* MAS1: valid, iprot, tid, ts, tsize
* MAS2: epn, sharen, x0, x1, w, i, m, g, e
* MAS3: rpn, u0-u3, ux, sx, uw, sw, ur, sr
*/
#define entry_start \
mflr r1 ; \
bl 0f ;
#define entry_end \
0: mflr r0 ; \
mtlr r1 ; \
blr ;
.section .bootpg, "ax"
.globl tlb1_entry
tlb1_entry:
entry_start
/*
* Number of TLB0 and TLB1 entries in the following table
*/
.long (2f-1f)/16
1:
#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
/*
* TLB0 4K Non-cacheable, guarded
* 0xff700000 4K Initial CCSRBAR mapping
*
* This ends up at a TLB0 Index==0 entry, and must not collide
* with other TLB0 Entries.
*/
.long TLB1_MAS0(0, 0, 0)
.long TLB1_MAS1(1, 0, 0, 0, 0)
.long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,0,1,0,1,0,1)
#else
#error("Update the number of table entries in tlb1_entry")
#endif
/*
* TLB0 16K Cacheable, non-guarded
* 0xd001_0000 16K Temporary Global data for initialization
*
* Use four 4K TLB0 entries. These entries must be cacheable
* as they provide the bootstrap memory before the memory
* controler and real memory have been configured.
*
* These entries end up at TLB0 Indicies 0x10, 0x14, 0x18 and 0x1c,
* and must not collide with other TLB0 entries.
*/
.long TLB1_MAS0(0, 0, 0)
.long TLB1_MAS1(1, 0, 0, 0, 0)
.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR), 0,0,0,0,0,0,0,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR), 0,0,0,0,0,1,0,1,0,1)
.long TLB1_MAS0(0, 0, 0)
.long TLB1_MAS1(1, 0, 0, 0, 0)
.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 4 * 1024),
0,0,0,0,0,0,0,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 4 * 1024),
0,0,0,0,0,1,0,1,0,1)
.long TLB1_MAS0(0, 0, 0)
.long TLB1_MAS1(1, 0, 0, 0, 0)
.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 8 * 1024),
0,0,0,0,0,0,0,0)
.long TLB1_MAS3(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 8 * 1024),
0,0,0,0,0,1,0,1,0,1)
.long TLB1_MAS0(0, 0, 0)
.long TLB1_MAS1(1, 0, 0, 0, 0)
.long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 12 * 1024),
0,0,0,0,0,0,0,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 12 * 1024),
0,0,0,0,0,1,0,1,0,1)
/* TLB 1 Initializations */
/*
* TLBe 0: 16M Non-cacheable, guarded
* 0xff000000 16M FLASH (upper half)
* Out of reset this entry is only 4K.
*/
.long TLB1_MAS0(1, 0, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_FLASH_BASE + 0x1000000),
0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_FLASH_BASE + 0x1000000),
0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 1: 16M Non-cacheable, guarded
* 0xfe000000 16M FLASH (lower half)
*/
.long TLB1_MAS0(1, 1, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_FLASH_BASE), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_FLASH_BASE), 0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 2: 256M Non-cacheable, guarded
* 0x80000000 256M PCI1 MEM
*/
.long TLB1_MAS0(1, 2, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_PCI1_MEM_BASE), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 3: 256M Non-cacheable, guarded
* 0xa0000000 256M PCIe Mem
*/
.long TLB1_MAS0(1, 3, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_PEX_MEM_BASE), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_PEX_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 4: Reserved for future usage
*/
/*
* TLBe 5: 64M Non-cacheable, guarded
* 0xe000_0000 1M CCSRBAR
* 0xe200_0000 8M PCI1 IO
* 0xe280_0000 8M PCIe IO
*/
.long TLB1_MAS0(1, 5, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR), 0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 6: 64M Cacheable, non-guarded
* 0xf000_0000 64M LBC SDRAM
*/
.long TLB1_MAS0(1, 6, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
.long TLB1_MAS2(E500_TLB_EPN(CFG_LBC_SDRAM_BASE), 0,0,0,0,0,0,0,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_LBC_SDRAM_BASE), 0,0,0,0,0,1,0,1,0,1)
/*
* TLBe 7: 256K Non-cacheable, guarded
* 0xf8000000 32K BCSR
* 0xf8008000 32K PIB (CS4)
* 0xf8010000 32K PIB (CS5)
*/
.long TLB1_MAS0(1, 7, 0)
.long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256K)
.long TLB1_MAS2(E500_TLB_EPN(CFG_BCSR_BASE), 0,0,0,0,1,0,1,0)
.long TLB1_MAS3(E500_TLB_RPN(CFG_BCSR_BASE), 0,0,0,0,0,1,0,1,0,1)
2:
entry_end
/*
* LAW(Local Access Window) configuration:
*
*0) 0x0000_0000 0x7fff_ffff DDR 2G
*1) 0x8000_0000 0x9fff_ffff PCI1 MEM 256MB
*2) 0xa000_0000 0xbfff_ffff PCIe MEM 256MB
*5) 0xc000_0000 0xdfff_ffff SRIO 256MB
*-) 0xe000_0000 0xe00f_ffff CCSR 1M
*3) 0xe200_0000 0xe27f_ffff PCI1 I/O 8M
*4) 0xe280_0000 0xe2ff_ffff PCIe I/0 8M
*6.a) 0xf000_0000 0xf3ff_ffff SDRAM 64MB
*6.b) 0xf800_0000 0xf800_7fff BCSR 32KB
*6.c) 0xf800_8000 0xf800_ffff PIB (CS4) 32KB
*6.d) 0xf801_0000 0xf801_7fff PIB (CS5) 32KB
*6.e) 0xfe00_0000 0xffff_ffff Flash 32MB
*
*Notes:
* CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
* If flash is 8M at default position (last 8M), no LAW needed.
*
* The defines below are 1-off of the actual LAWAR0 usage.
* So LAWAR3 define uses the LAWAR4 register in the ECM.
*/
#define LAWBAR0 0
#define LAWAR0 ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN)
#define LAWBAR1 ((CFG_PCI1_MEM_BASE>>12) & 0xfffff)
#define LAWAR1 (LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_256M))
#define LAWBAR2 ((CFG_PEX_MEM_BASE>>12) & 0xfffff)
#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_PEX | (LAWAR_SIZE & LAWAR_SIZE_256M))
#define LAWBAR3 ((CFG_PCI1_IO_PHYS>>12) & 0xfffff)
#define LAWAR3 (LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_8M))
#define LAWBAR4 ((CFG_PEX_IO_PHYS>>12) & 0xfffff)
#define LAWAR4 (LAWAR_EN | LAWAR_TRGT_IF_PEX | (LAWAR_SIZE & LAWAR_SIZE_16M))
#define LAWBAR5 ((CFG_SRIO_MEM_BASE>>12) & 0xfffff)
#define LAWAR5 (LAWAR_EN | LAWAR_TRGT_IF_RIO | (LAWAR_SIZE & LAWAR_SIZE_256M))
/* LBC window - maps 256M. That's SDRAM, BCSR, PIBs, and Flash */
#define LAWBAR6 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
#define LAWAR6 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
.section .bootpg, "ax"
.globl law_entry
law_entry:
entry_start
.long (4f-3f)/8
3:
.long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2,LAWBAR3,LAWAR3
.long LAWBAR4,LAWAR4,LAWBAR5,LAWAR5,LAWBAR6,LAWAR6
4:
entry_end
|
