xref: /openbmc/u-boot/board/sbc8548/tlb.c (revision 8875833a)
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:	64M	Non-cacheable, guarded
49 	 * 0xfc000000	56M	unused
50 	 * 0xff800000	8M	boot FLASH
51 	 *	.... or ....
52 	 * 0xfc000000	64M	user flash
53 	 *
54 	 * Out of reset this entry is only 4K.
55 	 */
56 	SET_TLB_ENTRY(1, 0xfc000000, 0xfc000000,
57 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
58 		      0, 0, BOOKE_PAGESZ_64M, 1),
59 
60 	/*
61 	 * TLB 1:	1G	Non-cacheable, guarded
62 	 * 0x80000000	512M	PCI1 MEM
63 	 * 0xa0000000	512M	PCIe MEM
64 	 */
65 	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_VIRT, CONFIG_SYS_PCI1_MEM_PHYS,
66 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
67 		      0, 1, BOOKE_PAGESZ_1G, 1),
68 
69 	/*
70 	 * TLB 2:	64M	Non-cacheable, guarded
71 	 * 0xe0000000	1M	CCSRBAR
72 	 * 0xe2000000	8M	PCI1 IO
73 	 * 0xe2800000	8M	PCIe IO
74 	 */
75 	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
76 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
77 		      0, 2, BOOKE_PAGESZ_64M, 1),
78 
79 #ifdef CONFIG_SYS_LBC_SDRAM_BASE
80 	/*
81 	 * TLB 3:	64M	Cacheable, non-guarded
82 	 * 0xf0000000	64M	LBC SDRAM First half
83 	 */
84 	SET_TLB_ENTRY(1, CONFIG_SYS_LBC_SDRAM_BASE, CONFIG_SYS_LBC_SDRAM_BASE,
85 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
86 		      0, 3, BOOKE_PAGESZ_64M, 1),
87 
88 	/*
89 	 * TLB 4:	64M	Cacheable, non-guarded
90 	 * 0xf4000000	64M	LBC SDRAM Second half
91 	 */
92 	SET_TLB_ENTRY(1, CONFIG_SYS_LBC_SDRAM_BASE + 0x4000000,
93 		      CONFIG_SYS_LBC_SDRAM_BASE + 0x4000000,
94 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
95 		      0, 4, BOOKE_PAGESZ_64M, 1),
96 #endif
97 
98 	/*
99 	 * TLB 5:	16M	Cacheable, non-guarded
100 	 * 0xf8000000	1M	7-segment LED display
101 	 * 0xf8100000	1M	User switches
102 	 * 0xf8300000	1M	Board revision
103 	 * 0xf8b00000	1M	EEPROM
104 	 */
105 	SET_TLB_ENTRY(1, CONFIG_SYS_EPLD_BASE, CONFIG_SYS_EPLD_BASE,
106 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
107 		      0, 5, BOOKE_PAGESZ_16M, 1),
108 
109 #ifndef CONFIG_SYS_ALT_BOOT
110 	/*
111 	 * TLB 6:	64M	Non-cacheable, guarded
112 	 * 0xec000000	64M	64MB user FLASH
113 	 */
114 	SET_TLB_ENTRY(1, CONFIG_SYS_ALT_FLASH, CONFIG_SYS_ALT_FLASH,
115 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
116 		      0, 6, BOOKE_PAGESZ_64M, 1),
117 #else
118 	/*
119 	 * TLB 6:	4M	Non-cacheable, guarded
120 	 * 0xef800000	4M	1st 1/2 8MB soldered FLASH
121 	 */
122 	SET_TLB_ENTRY(1, CONFIG_SYS_ALT_FLASH, CONFIG_SYS_ALT_FLASH,
123 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
124 		      0, 6, BOOKE_PAGESZ_4M, 1),
125 
126 	/*
127 	 * TLB 7:	4M	Non-cacheable, guarded
128 	 * 0xefc00000	4M	2nd half 8MB soldered FLASH
129 	 */
130 	SET_TLB_ENTRY(1, CONFIG_SYS_ALT_FLASH + 0x400000,
131 		      CONFIG_SYS_ALT_FLASH + 0x400000,
132 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
133 		      0, 7, BOOKE_PAGESZ_4M, 1),
134 #endif
135 
136 };
137 
138 int num_tlb_entries = ARRAY_SIZE(tlb_table);
139