diff options
Diffstat (limited to 'board/pm856/init.S')
| -rw-r--r-- | board/pm856/init.S | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/board/pm856/init.S b/board/pm856/init.S new file mode 100644 index 0000000..ade5d6e --- /dev/null +++ b/board/pm856/init.S @@ -0,0 +1,263 @@ +/* + * Copyright 2004 Freescale Semiconductor. + * Copyright (C) 2002,2003, Motorola Inc. + * Xianghua Xiao <X.Xiao@motorola.com> + * + * 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 13 + +#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_RPN(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 0: 64M Non-cacheable, guarded + * 0xfc000000 64M FLASH (8,16,32 or 64 MB) + * Out of reset this entry is only 4K. + */ + .long TLB1_MAS0(1, 0, 0) + .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M) + .long TLB1_MAS2(E500_TLB_EPN(0xfc000000), 0,0,0,0,1,0,1,0) + .long TLB1_MAS3(E500_TLB_RPN(0xfc000000), 0,0,0,0,0,1,0,1,0,1) + + /* + * TLB 1: 256M Non-cacheable, guarded + * 0x80000000 256M PCI1 MEM First half + */ + .long TLB1_MAS0(1, 1, 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) + + /* + * TLB 2: 256M Non-cacheable, guarded + * 0x90000000 256M PCI1 MEM Second half + */ + .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 + 0x10000000), + 0,0,0,0,1,0,1,0) + .long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE + 0x10000000), + 0,0,0,0,0,1,0,1,0,1) + + /* + * TLB 3: 256M Non-cacheable, guarded + * 0xc0000000 256M Rapid IO MEM First half + */ + .long TLB1_MAS0(1, 3, 0) + .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M) + .long TLB1_MAS2(E500_TLB_EPN(CFG_RIO_MEM_BASE), 0,0,0,0,1,0,1,0) + .long TLB1_MAS3(E500_TLB_RPN(CFG_RIO_MEM_BASE), 0,0,0,0,0,1,0,1,0,1) + + /* + * TLB 4: 256M Non-cacheable, guarded + * 0xd0000000 256M Rapid IO MEM Second half + */ + .long TLB1_MAS0(1, 4, 0) + .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M) + .long TLB1_MAS2(E500_TLB_EPN(CFG_RIO_MEM_BASE + 0x10000000), + 0,0,0,0,1,0,1,0) + .long TLB1_MAS3(E500_TLB_RPN(CFG_RIO_MEM_BASE + 0x10000000), + 0,0,0,0,0,1,0,1,0,1) + + /* + * TLB 5: 64M Non-cacheable, guarded + * 0xe000_0000 1M CCSRBAR + * 0xe200_0000 16M PCI1 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) + + /* + * TLB 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) + +#if !defined(CONFIG_SPD_EEPROM) + /* + * TLB 7: 256M DDR + * 0x00000000 256M 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. + */ + + .long TLB1_MAS0(1, 7, 0) + .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M) + .long TLB1_MAS2(E500_TLB_EPN(CFG_DDR_SDRAM_BASE), 0,0,0,0,0,0,0,0) + .long TLB1_MAS3(E500_TLB_RPN(CFG_DDR_SDRAM_BASE), 0,0,0,0,0,1,0,1,0,1) +#endif + + entry_end + +/* + * LAW(Local Access Window) configuration: + * + * 0x0000_0000 0x7fff_ffff DDR 2G + * 0x8000_0000 0x9fff_ffff PCI1 MEM 512M + * 0xc000_0000 0xdfff_ffff RapidIO 512M + * 0xe000_0000 0xe000_ffff CCSR 1M + * 0xe200_0000 0xe2ff_ffff PCI1 IO 16M + * 0xf000_0000 0xf7ff_ffff SDRAM 128M + * 0xf800_0000 0xf80f_ffff BCSR 1M + * 0xfc00_0000 0xffff_ffff FLASH (boot bank) 64M + * + * 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. + */ + +#if !defined(CONFIG_SPD_EEPROM) +#define LAWBAR0 ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff) +#define LAWAR0 (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_256M)) +#else +#define LAWBAR0 0 +#define LAWAR0 ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN) +#endif + +#define LAWBAR1 ((CFG_PCI1_MEM_BASE>>12) & 0xfffff) +#define LAWAR1 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_512M)) + +/* + * This is not so much the SDRAM map as it is the whole localbus map. + */ +#define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff) +#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M)) + +#define LAWBAR3 ((CFG_PCI1_IO_BASE>>12) & 0xfffff) +#define LAWAR3 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_16M)) + +/* + * Rapid IO at 0xc000_0000 for 512 M + */ +#define LAWBAR4 ((CFG_RIO_MEM_BASE>>12) & 0xfffff) +#define LAWAR4 (LAWAR_EN | LAWAR_TRGT_IF_RIO | (LAWAR_SIZE & LAWAR_SIZE_512M)) + + + .section .bootpg, "ax" + .globl law_entry +law_entry: + entry_start + .long 0x05 + .long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2,LAWBAR3,LAWAR3 + .long LAWBAR4,LAWAR4 + entry_end |