summaryrefslogtreecommitdiff
path: root/board/stxssa/init.S
blob: d7479463fc55e5f831f3c4ad1df950e42d128ef5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
/*
 * Copyright (C) 2005 Embedded Alley Solutions, Inc.
 * Dan Malek <dan@embeddedalley.com>
 * Copied from STx GP3.
 * Updates for Silicon Tx GP3 SSA.  We only support 32-bit flash
 * and DDR with SPD EEPROM configuration.
 *
 * Copyright 2004 Freescale Semiconductor.
 * Copyright (C) 2002,2003, Motorola Inc.
 * Xianghua Xiao <X.Xiao@motorola.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 <ppc_defs.h>
#include <asm/cache.h>
#include <asm/mmu.h>
#include <config.h>
#include <mpc85xx.h>


/*
 * TLB0 and TLB1 Entries
 *
 * Out of reset, TLB1's Entry 0 maps the highest 4K for CCSRBAR.
 * However, CCSRBAR is then relocated to CFG_CCSRBAR right after
 * these TLB entries are established.
 *
 * The TLB entries for DDR are dynamically setup in spd_sdram()
 * and use TLB1 Entries 8 through 15 as needed according to the
 * size of DDR memory.
 *
 * MAS0: tlbsel, esel, nv
 * MAS1: valid, iprot, tid, ts, tsize
 * MAS2: epn, x0, x1, w, i, m, g, e
 * MAS3: rpn, u0-u3, ux, sx, uw, sw, ur, sr
 */

#define	entry_start \
	mflr	r1 	;	\
	bl	0f 	;

#define	entry_end \
0:	mflr	r0	;	\
	mtlr	r1	;	\
	blr		;


	.section	.bootpg, "ax"
	.globl	tlb1_entry
tlb1_entry:
	entry_start

	/*
	 * Number of TLB0 and TLB1 entries in the following table
	 */
	.long 12

#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
	/*
	 * TLB0		4K	Non-cacheable, guarded
	 * 0xff700000	4K	Initial CCSRBAR mapping
	 *
	 * This ends up at a TLB0 Index==0 entry, and must not collide
	 * with other TLB0 Entries.
	 */
	.long FSL_BOOKE_MAS0(0, 0, 0)
	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
	.long FSL_BOOKE_MAS2(CFG_CCSRBAR_DEFAULT, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_CCSRBAR_DEFAULT, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
#else
#error("Update the number of table entries in tlb1_entry")
#endif

	/*
	 * TLB0		16K	Cacheable, non-guarded
	 * 0xd001_0000	16K	Temporary Global data for initialization
	 *
	 * Use four 4K TLB0 entries.  These entries must be cacheable
	 * as they provide the bootstrap memory before the memory
	 * controler and real memory have been configured.
	 *
	 * These entries end up at TLB0 Indicies 0x10, 0x14, 0x18 and 0x1c,
	 * and must not collide with other TLB0 entries.
	 */
	.long FSL_BOOKE_MAS0(0, 0, 0)
	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR, 0)
	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	.long FSL_BOOKE_MAS0(0, 0, 0)
	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 4 * 1024, 0)
	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 4 * 1024, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	.long FSL_BOOKE_MAS0(0, 0, 0)
	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 8 * 1024, 0)
	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 8 * 1024, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	.long FSL_BOOKE_MAS0(0, 0, 0)
	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 12 * 1024, 0)
	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 12 * 1024, 0, (MAS3_SX|MAS3_SW|MAS3_SR))


	/*
	 * TLB 0:	64M	Non-cacheable, guarded
	 * 0xfc000000	6M4	FLASH
	 * Out of reset this entry is only 4K.
	 */
	.long FSL_BOOKE_MAS0(1, 0, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
	.long FSL_BOOKE_MAS2(CFG_FLASH_BASE, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_FLASH_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 1:	256M	Non-cacheable, guarded
	 * 0x80000000	256M	PCI1 MEM First half
	 */
	.long FSL_BOOKE_MAS0(1, 1, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
	.long FSL_BOOKE_MAS2(CFG_PCI1_MEM_PHYS, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_PCI1_MEM_PHYS, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 2:	256M	Non-cacheable, guarded
	 * 0x90000000	256M	PCI1 MEM Second half
	 */
	.long FSL_BOOKE_MAS0(1, 2, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
	.long FSL_BOOKE_MAS2(CFG_PCI1_MEM_PHYS + 0x10000000, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_PCI1_MEM_PHYS + 0x10000000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 3:	256M	Non-cacheable, guarded
	 * 0xa0000000	256M	PCI2 MEM First half
	 */
	.long FSL_BOOKE_MAS0(1, 3, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
	.long FSL_BOOKE_MAS2(CFG_PCI2_MEM_PHYS, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_PCI2_MEM_PHYS, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 4:	256M	Non-cacheable, guarded
	 * 0xb0000000	256M	PCI2 MEM Second half
	 */
	.long FSL_BOOKE_MAS0(1, 4, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
	.long FSL_BOOKE_MAS2(CFG_PCI2_MEM_PHYS + 0x10000000, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_PCI2_MEM_PHYS + 0x10000000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 5:	64M	Non-cacheable, guarded
	 * 0xe000_0000	1M	CCSRBAR
	 * 0xe200_0000	16M	PCI1 IO
	 * 0xe300_0000	16M	PCI2 IO
	 */
	.long FSL_BOOKE_MAS0(1, 5, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
	.long FSL_BOOKE_MAS2(CFG_CCSRBAR, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_CCSRBAR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))

	/*
	 * TLB 6:	256M	Non-cacheable, guarded
	 * 0xf0000000		Local bus expansion option.
	 * 0xfb000000		Configuration Latch register (one word)
	 * 0xfc000000		Up to 64M flash
	 */
	.long FSL_BOOKE_MAS0(1, 7, 0)
	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
	.long FSL_BOOKE_MAS2(CFG_LBC_OPTION_BASE, (MAS2_I|MAS2_G))
	.long FSL_BOOKE_MAS3(CFG_LBC_OPTION_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
	entry_end