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Larry Johnsonc591dff2007-12-27 11:28:51 -05001/*
2 *
3 * See file CREDITS for list of people who contributed to this
4 * project.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19 * MA 02111-1307 USA
20 */
21
22#include <ppc_asm.tmpl>
23#include <asm-ppc/mmu.h>
24#include <config.h>
25
26/**************************************************************************
27 * TLB TABLE
28 *
29 * This table is used by the cpu boot code to setup the initial tlb
30 * entries. Rather than make broad assumptions in the cpu source tree,
31 * this table lets each board set things up however they like.
32 *
33 * Pointer to the table is returned in r1
34 *
35 *************************************************************************/
36 .section .bootpg,"ax"
37 .globl tlbtab
38
39tlbtab:
40 tlbtab_start
41
42 /*
43 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
44 * speed up boot process. It is patched after relocation to enable SA_I
45 */
Larry Johnson6433fa22008-03-17 11:10:35 -050046 tlbentry( 0xF0000000, SZ_256M, 0xF0000000, 1, AC_R|AC_W|AC_X|SA_G )
Larry Johnsonc591dff2007-12-27 11:28:51 -050047
48 /*
49 * TLB entries for SDRAM are not needed on this platform. They are
50 * generated dynamically in the SPD DDR2 detection routine.
51 */
52
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020053#ifdef CONFIG_SYS_INIT_RAM_DCACHE
Larry Johnsonc591dff2007-12-27 11:28:51 -050054 /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020055 tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0,
Larry Johnson6433fa22008-03-17 11:10:35 -050056 AC_R|AC_W|AC_X|SA_G )
Larry Johnsonc591dff2007-12-27 11:28:51 -050057#endif
58
59 /* TLB-entry for PCI Memory */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020060 tlbentry( CONFIG_SYS_PCI_MEMBASE + 0x00000000, SZ_256M,
61 CONFIG_SYS_PCI_MEMBASE + 0x00000000, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnson6433fa22008-03-17 11:10:35 -050062
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020063 tlbentry( CONFIG_SYS_PCI_MEMBASE + 0x10000000, SZ_256M,
64 CONFIG_SYS_PCI_MEMBASE + 0x10000000, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnson6433fa22008-03-17 11:10:35 -050065
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020066 tlbentry( CONFIG_SYS_PCI_MEMBASE + 0x20000000, SZ_256M,
67 CONFIG_SYS_PCI_MEMBASE + 0x20000000, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnson6433fa22008-03-17 11:10:35 -050068
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020069 tlbentry( CONFIG_SYS_PCI_MEMBASE + 0x30000000, SZ_256M,
70 CONFIG_SYS_PCI_MEMBASE + 0x30000000, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnsonc591dff2007-12-27 11:28:51 -050071
72 /* TLB-entry for EBC */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020073 tlbentry( CONFIG_SYS_CPLD_BASE, SZ_1K, CONFIG_SYS_CPLD_BASE, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnsonc591dff2007-12-27 11:28:51 -050074
75 /* TLB-entry for Internal Registers & OCM */
76 /* I wonder why this must be executable -- lrj@acm.org 2007-10-08 */
Larry Johnson6433fa22008-03-17 11:10:35 -050077 tlbentry( 0xE0000000, SZ_16M, 0xE0000000, 0, AC_R|AC_W|AC_X|SA_I )
Larry Johnsonc591dff2007-12-27 11:28:51 -050078
79 /*TLB-entry PCI registers*/
Larry Johnson6433fa22008-03-17 11:10:35 -050080 tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_R|AC_W|SA_G|SA_I )
Larry Johnsonc591dff2007-12-27 11:28:51 -050081
82 /* TLB-entry for peripherals */
83 tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_R|AC_W|SA_G|SA_I)
84
85 /* TLB-entry PCI IO Space - from sr@denx.de */
86 tlbentry(0xE8000000, SZ_64K, 0xE8000000, 1, AC_R|AC_W|SA_G|SA_I)
87
88 tlbtab_end
Larry Johnson6433fa22008-03-17 11:10:35 -050089
90#if defined(CONFIG_KORAT_PERMANENT)
91 .globl korat_branch_absolute
92korat_branch_absolute:
93 mtlr r3
94 blr
95#endif