/* *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.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 <config.h>/* General */#define TLB_VALID   0x00000200#define _256M       0x10000000/* Supported page sizes */#define SZ_1K	    0x00000000#define SZ_4K	    0x00000010#define SZ_16K	    0x00000020#define SZ_64K	    0x00000030#define SZ_256K	    0x00000040#define SZ_1M	    0x00000050#define SZ_8M       0x00000060#define SZ_16M	    0x00000070#define SZ_256M	    0x00000090/* Storage attributes */#define SA_W	    0x00000800	    /* Write-through */#define SA_I	    0x00000400	    /* Caching inhibited */#define SA_M	    0x00000200	    /* Memory coherence */#define SA_G	    0x00000100	    /* Guarded */#define SA_E	    0x00000080	    /* Endian *//* Access control */#define AC_X	    0x00000024	    /* Execute */#define AC_W	    0x00000012	    /* Write */#define AC_R	    0x00000009	    /* Read *//* Some handy macros */#define EPN(e)		((e) & 0xfffffc00)#define TLB0(epn,sz)	( (EPN((epn)) | (sz) | TLB_VALID ) )#define TLB1(rpn,erpn)	( ((rpn)&0xfffffc00) | (erpn) )#define TLB2(a)		( (a)&0x00000fbf )#define tlbtab_start\	mflr    r1  ;\	bl 0f	    ;#define tlbtab_end\	.long 0, 0, 0	;   \0:	mflr    r0	;   \	mtlr    r1	;   \	blr		;#define tlbentry(epn,sz,rpn,erpn,attr)\	.long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)/************************************************************************** * TLB TABLE * * This table is used by the cpu boot code to setup the initial tlb * entries. Rather than make broad assumptions in the cpu source tree, * this table lets each board set things up however they like. * *  Pointer to the table is returned in r1 * *************************************************************************/    .section .bootpg,"ax"    .globl tlbtabtlbtab:    tlbtab_start    tlbentry( 0xf0000000, SZ_256M, 0xf0000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I )    tlbentry( CFG_PERIPHERAL_BASE, SZ_256M, 0x40000000, 1, AC_R|AC_W|SA_G|SA_I )    tlbentry( CFG_ISRAM_BASE, SZ_4K, 0x80000000, 0, AC_R|AC_W|AC_X )    tlbentry( CFG_ISRAM_BASE + 0x1000, SZ_4K, 0x80001000, 0, AC_R|AC_W|AC_X )    tlbentry( CFG_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )    tlbentry( CFG_SDRAM_BASE + 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )    tlbentry( CFG_SDRAM_BASE + 0x20000000, SZ_256M, 0x20000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )    tlbentry( CFG_SDRAM_BASE + 0x30000000, SZ_256M, 0x30000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )    tlbentry( CFG_PCI_BASE, SZ_256M, 0x00000000, 2, AC_R|AC_W|SA_G|SA_I )    tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_R|AC_W|SA_G|SA_I )    tlbtab_end