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Diffstat (limited to 'board/stxgp3/init.S')
| -rw-r--r-- | board/stxgp3/init.S | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/board/stxgp3/init.S b/board/stxgp3/init.S new file mode 100644 index 000000000..4953c0ba3 --- /dev/null +++ b/board/stxgp3/init.S @@ -0,0 +1,153 @@ +/* + * Copyright (C) 2003 Embedded Edge, LLC + * Dan Malek <dan@embeddededge.com> + * Copied from ADS85xx. + * Updates for Silicon Tx GP3 8560. We only support 32-bit flash + * and DDR with SPD EEPROM configuration. + * + * 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> + +#define entry_start \ + mflr r1 ; \ + bl 0f ; + +#define entry_end \ +0: mflr r0 ; \ + mtlr r1 ; \ + blr ; + +/* TLB1 entries configuration: */ + + .section .bootpg, "ax" + .globl tlb1_entry +tlb1_entry: + entry_start + + /* If RAMBOOT, we are testing and the BDI has set up + * much of the MMU already. + * TLB 4,5 SDRAM + * TLB 15 is default CCSRBAR. + */ + .long 0x09 /* the following data table uses a few of 16 TLB entries */ + + .long TLB1_MAS0(1,1,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(((CFG_CCSRBAR>>12) & 0xfffff),0,0,0,0,1,0,1,0) + .long TLB1_MAS3(((CFG_CCSRBAR>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,2,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_16M) + .long TLB1_MAS2(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0) + .long TLB1_MAS3(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,3,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(((CFG_LBC_LCLDEVS_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0) + .long TLB1_MAS3(((CFG_LBC_LCLDEVS_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + .long TLB1_MAS0(1,4,0) + .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(0,0,0,0,0,0,0,0,0) + .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,5,0) + .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(0,0,0,0,0,0,0,0,0) + .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,6,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_64M) +#if defined(CONFIG_RAM_AS_FLASH) + .long TLB1_MAS2(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0) +#else + .long TLB1_MAS2(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,0,0,0) +#endif + .long TLB1_MAS3(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,7,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_16K) +#ifdef CONFIG_L2_INIT_RAM + .long TLB1_MAS2(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,1,0,0,0,0) +#else + .long TLB1_MAS2(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,0,0,0,0,0) +#endif + .long TLB1_MAS3(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + + .long TLB1_MAS0(1,8,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_256M) + .long TLB1_MAS2(((CFG_PCI_MEM_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0) + .long TLB1_MAS3(((CFG_PCI_MEM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) + +#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR) + .long TLB1_MAS0(1,15,0) + .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(((CFG_CCSRBAR_DEFAULT>>12) & 0xfffff),0,0,0,0,1,0,1,0) + .long TLB1_MAS3(((CFG_CCSRBAR_DEFAULT>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1) +#else + .long TLB1_MAS0(1,15,0) + .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M) + .long TLB1_MAS2(0,0,0,0,0,0,0,0,0) + .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1) +#endif + entry_end + +/* LAW(Local Access Window) configuration: + * 0000_0000-8000_0000: Up to 2G DDR + * f000_0000-f3ff_ffff: PCI(256M) + * f400_0000-f7ff_ffff: RapidIO(128M) + * f800_0000-ffff_ffff: localbus(128M) + * f800_0000-fbff_ffff: LBC SDRAM(64M) + * fc00_0000-fcff_ffff: LBC BCSR (1M, Chip select 1) + * fdf0_0000-fdff_ffff: CCSRBAR(1M) + * ff00_0000-ffff_ffff: Flash(16M) + * We don't need a local window for CCSRBAR and flash because they + * reside in their default mapped spaces. + */ + +#define LAWBAR0 0 +#define LAWAR0 ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_2G)) & ~LAWAR_EN) + +#define LAWBAR1 ((CFG_PCI_MEM_BASE>>12) & 0xfffff) +#define LAWAR1 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_256M)) + +#if !defined(CONFIG_RAM_AS_FLASH) +#define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff) +#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_128M)) +#else +#define LAWBAR2 0 +#define LAWAR2 ((LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN) +#endif + + .section .bootpg, "ax" + .globl law_entry +law_entry: + entry_start + .long 0x03 + .long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2 + entry_end |