xref: /openbmc/u-boot/board/sbc8548/tlb.c (revision ded58f41)
1 /*
2  * Copyright 2008 Freescale Semiconductor, Inc.
3  *
4  * (C) Copyright 2000
5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25 
26 #include <common.h>
27 #include <asm/mmu.h>
28 
29 struct fsl_e_tlb_entry tlb_table[] = {
30 	/* TLB 0 - for temp stack in cache */
31 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR, CONFIG_SYS_INIT_RAM_ADDR,
32 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
33 		      0, 0, BOOKE_PAGESZ_4K, 0),
34 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
35 		      CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
36 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
37 		      0, 0, BOOKE_PAGESZ_4K, 0),
38 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
39 		      CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
40 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
41 		      0, 0, BOOKE_PAGESZ_4K, 0),
42 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
43 		      CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
44 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
45 		      0, 0, BOOKE_PAGESZ_4K, 0),
46 
47 	/*
48 	 * TLB 0:	16M	Non-cacheable, guarded
49 	 * 0xff800000	16M	TLB for 8MB FLASH
50 	 * Out of reset this entry is only 4K.
51 	 */
52 	SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE,
53 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
54 		      0, 0, BOOKE_PAGESZ_16M, 1),
55 
56 	/*
57 	 * TLB 1:	256M	Non-cacheable, guarded
58 	 * 0x80000000	256M	PCI1 MEM First half
59 	 */
60 	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS, CONFIG_SYS_PCI1_MEM_PHYS,
61 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
62 		      0, 1, BOOKE_PAGESZ_256M, 1),
63 
64 	/*
65 	 * TLB 2:	256M	Non-cacheable, guarded
66 	 * 0x90000000	256M	PCI1 MEM Second half
67 	 */
68 	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000,
69 		      CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000,
70 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
71 		      0, 2, BOOKE_PAGESZ_256M, 1),
72 
73 	/*
74 	 * TLB 3:	256M Cacheable, non-guarded
75 	 * 0x0		256M DDR SDRAM
76 	 */
77 	#if !defined(CONFIG_SPD_EEPROM)
78 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
79 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
80 		      0, 3, BOOKE_PAGESZ_256M, 1),
81 	#endif
82 
83 	/*
84 	 * TLB 4:	64M	Non-cacheable, guarded
85 	 * 0xe0000000	1M	CCSRBAR
86 	 * 0xe2000000	16M	PCI1 IO
87 	 */
88 	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
89 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
90 		      0, 4, BOOKE_PAGESZ_64M, 1),
91 
92 	/*
93 	 * TLB 5:	64M	Cacheable, non-guarded
94 	 * 0xf0000000	64M	LBC SDRAM
95 	 */
96 	SET_TLB_ENTRY(1, CONFIG_SYS_LBC_SDRAM_BASE, CONFIG_SYS_LBC_SDRAM_BASE,
97 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
98 		      0, 5, BOOKE_PAGESZ_64M, 1),
99 
100 	/*
101 	 * TLB 6:	16M	Cacheable, non-guarded
102 	 * 0xf8000000	1M	7-segment LED display
103 	 * 0xf8100000	1M	User switches
104 	 * 0xf8300000	1M	Board revision
105 	 * 0xf8b00000	1M	EEPROM
106 	 */
107 	SET_TLB_ENTRY(1, CONFIG_SYS_EPLD_BASE, CONFIG_SYS_EPLD_BASE,
108 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
109 		      0, 6, BOOKE_PAGESZ_16M, 1),
110 };
111 
112 int num_tlb_entries = ARRAY_SIZE(tlb_table);
113