| Dirk Eibach | ac44ffb | 2009-07-27 08:49:48 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2009 |
| 3 | * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de |
| 4 | * |
| 5 | * Based on board/amcc/canyonlands/init.S |
| 6 | * (C) Copyright 2008 |
| 7 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 8 | * |
| 9 | * See file CREDITS for list of people who contributed to this |
| 10 | * project. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License as |
| 14 | * published by the Free Software Foundation; either version 2 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 25 | * MA 02111-1307 USA |
| 26 | */ |
| 27 | |
| 28 | #include <ppc_asm.tmpl> |
| 29 | #include <config.h> |
| 30 | #include <asm-ppc/mmu.h> |
| 31 | |
| 32 | /************************************************************************** |
| 33 | * TLB TABLE |
| 34 | * |
| 35 | * This table is used by the cpu boot code to setup the initial tlb |
| 36 | * entries. Rather than make broad assumptions in the cpu source tree, |
| 37 | * this table lets each board set things up however they like. |
| 38 | * |
| 39 | * Pointer to the table is returned in r1 |
| 40 | * |
| 41 | *************************************************************************/ |
| 42 | .section .bootpg,"ax" |
| 43 | .globl tlbtab |
| 44 | |
| 45 | tlbtab: |
| 46 | tlbtab_start |
| 47 | |
| 48 | /* |
| 49 | * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to |
| 50 | * use the speed up boot process. It is patched after relocation to |
| 51 | * enable SA_I |
| 52 | */ |
| 53 | tlbentry(CONFIG_SYS_BOOT_BASE_ADDR, SZ_16M, CONFIG_SYS_BOOT_BASE_ADDR, |
| 54 | 4, AC_R|AC_W|AC_X|SA_G) /* TLB 0 */ |
| 55 | |
| 56 | /* |
| 57 | * TLB entries for SDRAM are not needed on this platform. |
| 58 | * They are dynamically generated in the SPD DDR(2) detection |
| 59 | * routine. |
| 60 | */ |
| 61 | |
| 62 | #ifdef CONFIG_SYS_INIT_RAM_DCACHE |
| 63 | /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */ |
| 64 | tlbentry(CONFIG_SYS_INIT_RAM_ADDR, SZ_4K, CONFIG_SYS_INIT_RAM_ADDR, |
| 65 | 0, AC_R|AC_W|AC_X|SA_G) |
| 66 | #endif |
| 67 | |
| 68 | tlbentry(CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 0xC, |
| 69 | AC_R|AC_W|SA_G|SA_I) |
| 70 | tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x20000000, 0xC, |
| 71 | AC_R|AC_W|SA_G|SA_I) |
| 72 | |
| 73 | /* TLB-entry for NVRAM */ |
| 74 | tlbentry(CONFIG_SYS_NVRAM_BASE, SZ_1M, CONFIG_SYS_NVRAM_BASE, 4, |
| 75 | AC_R|AC_W|SA_G|SA_I) |
| 76 | |
| 77 | /* TLB-entry for UART */ |
| 78 | tlbentry(CONFIG_SYS_UART_BASE, SZ_16K, CONFIG_SYS_UART_BASE, 4, |
| 79 | AC_R|AC_W|SA_G|SA_I) |
| 80 | |
| 81 | /* TLB-entry for IO */ |
| 82 | tlbentry(CONFIG_SYS_IO_BASE, SZ_16K, CONFIG_SYS_IO_BASE, 4, |
| 83 | AC_R|AC_W|SA_G|SA_I) |
| 84 | |
| 85 | /* TLB-entry for OCM */ |
| 86 | tlbentry(CONFIG_SYS_OCM_BASE, SZ_1M, 0x00000000, 4, |
| 87 | AC_R|AC_W|AC_X|SA_I) |
| 88 | |
| 89 | /* TLB-entry for Local Configuration registers => peripherals */ |
| 90 | tlbentry(CONFIG_SYS_LOCAL_CONF_REGS, SZ_16M, CONFIG_SYS_LOCAL_CONF_REGS, |
| 91 | 4, AC_R|AC_W|AC_X|SA_G|SA_I) |
| 92 | |
| 93 | /* AHB: Internal USB Peripherals (USB, SATA) */ |
| 94 | tlbentry(CONFIG_SYS_AHB_BASE, SZ_1M, 0xbff00000, 4, |
| 95 | AC_R|AC_W|AC_X|SA_G|SA_I) |
| 96 | |
| 97 | tlbtab_end |