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6c0bbdcc NI |
1 | /* |
2 | * Copyright (C) 2007 | |
3 | * Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | |
61fb15c5 | 4 | * |
6c0bbdcc NI |
5 | * Copyright (C) 2007 |
6 | * Kenati Technologies, Inc. | |
7 | * | |
8 | * board/ms7722se/lowlevel_init.S | |
9 | * | |
1a459660 | 10 | * SPDX-License-Identifier: GPL-2.0+ |
6c0bbdcc NI |
11 | */ |
12 | ||
13 | #include <config.h> | |
14 | #include <version.h> | |
15 | ||
16 | #include <asm/processor.h> | |
f7e78f3b | 17 | #include <asm/macro.h> |
6c0bbdcc NI |
18 | |
19 | /* | |
e4430779 JCPV |
20 | * Board specific low level init code, called _very_ early in the |
21 | * startup sequence. Relocation to SDRAM has not happened yet, no | |
22 | * stack is available, bss section has not been initialised, etc. | |
6c0bbdcc | 23 | * |
e4430779 | 24 | * (Note: As no stack is available, no subroutines can be called...). |
6c0bbdcc NI |
25 | */ |
26 | ||
27 | .global lowlevel_init | |
28 | ||
29 | .text | |
30 | .align 2 | |
31 | ||
32 | lowlevel_init: | |
33 | ||
f7e78f3b JCPV |
34 | /* |
35 | * Cache Control Register | |
36 | * Instruction Cache Invalidate | |
37 | */ | |
38 | write32 CCR_A, CCR_D | |
6c0bbdcc | 39 | |
f7e78f3b JCPV |
40 | /* |
41 | * Address of MMU Control Register | |
42 | * TI == TLB Invalidate bit | |
43 | */ | |
44 | write32 MMUCR_A, MMUCR_D | |
6c0bbdcc | 45 | |
b5d10a13 | 46 | /* Address of Power Control Register 0 */ |
f7e78f3b | 47 | write32 MSTPCR0_A, MSTPCR0_D |
6c0bbdcc | 48 | |
b5d10a13 | 49 | /* Address of Power Control Register 2 */ |
f7e78f3b | 50 | write32 MSTPCR2_A, MSTPCR2_D |
6c0bbdcc | 51 | |
f7e78f3b | 52 | write16 SBSCR_A, SBSCR_D |
6c0bbdcc | 53 | |
f7e78f3b | 54 | write16 PSCR_A, PSCR_D |
6c0bbdcc | 55 | |
b5d10a13 | 56 | /* 0xA4520004 (Watchdog Control / Status Register) */ |
f7e78f3b | 57 | ! write16 RWTCSR_A, RWTCSR_D_1 /* 0xA507 -> timer_STOP/WDT_CLK=max */ |
6c0bbdcc | 58 | |
b5d10a13 | 59 | /* 0xA4520000 (Watchdog Count Register) */ |
f7e78f3b | 60 | write16 RWTCNT_A, RWTCNT_D /*0x5A00 -> Clear */ |
6c0bbdcc | 61 | |
b5d10a13 | 62 | /* 0xA4520004 (Watchdog Control / Status Register) */ |
f7e78f3b | 63 | write16 RWTCSR_A, RWTCSR_D_2 /* 0xA504 -> timer_STOP/CLK=500ms */ |
6c0bbdcc | 64 | |
b5d10a13 | 65 | /* 0xA4150000 Frequency control register */ |
f7e78f3b | 66 | write32 FRQCR_A, FRQCR_D |
6c0bbdcc | 67 | |
f7e78f3b | 68 | write32 CCR_A, CCR_D_2 |
6c0bbdcc NI |
69 | |
70 | bsc_init: | |
71 | ||
f7e78f3b | 72 | write16 PSELA_A, PSELA_D |
6c0bbdcc | 73 | |
f7e78f3b | 74 | write16 DRVCR_A, DRVCR_D |
6c0bbdcc | 75 | |
f7e78f3b | 76 | write16 PCCR_A, PCCR_D |
6c0bbdcc | 77 | |
f7e78f3b | 78 | write16 PECR_A, PECR_D |
6c0bbdcc | 79 | |
f7e78f3b | 80 | write16 PJCR_A, PJCR_D |
6c0bbdcc | 81 | |
f7e78f3b | 82 | write16 PXCR_A, PXCR_D |
6c0bbdcc | 83 | |
f7e78f3b | 84 | write32 CMNCR_A, CMNCR_D |
6c0bbdcc | 85 | |
f7e78f3b | 86 | write32 CS0BCR_A, CS0BCR_D |
6c0bbdcc | 87 | |
f7e78f3b | 88 | write32 CS2BCR_A, CS2BCR_D |
6c0bbdcc | 89 | |
f7e78f3b | 90 | write32 CS4BCR_A, CS4BCR_D |
6c0bbdcc | 91 | |
f7e78f3b | 92 | write32 CS5ABCR_A, CS5ABCR_D |
6c0bbdcc | 93 | |
f7e78f3b | 94 | write32 CS5BBCR_A, CS5BBCR_D |
6c0bbdcc | 95 | |
f7e78f3b | 96 | write32 CS6ABCR_A, CS6ABCR_D |
6c0bbdcc | 97 | |
f7e78f3b | 98 | write32 CS0WCR_A, CS0WCR_D |
6c0bbdcc | 99 | |
f7e78f3b | 100 | write32 CS2WCR_A, CS2WCR_D |
6c0bbdcc | 101 | |
f7e78f3b | 102 | write32 CS4WCR_A, CS4WCR_D |
6c0bbdcc | 103 | |
f7e78f3b | 104 | write32 CS5AWCR_A, CS5AWCR_D |
6c0bbdcc | 105 | |
f7e78f3b | 106 | write32 CS5BWCR_A, CS5BWCR_D |
6c0bbdcc | 107 | |
f7e78f3b | 108 | write32 CS6AWCR_A, CS6AWCR_D |
6c0bbdcc NI |
109 | |
110 | ! SDRAM initialization | |
f7e78f3b | 111 | write32 SDCR_A, SDCR_D |
6c0bbdcc | 112 | |
f7e78f3b | 113 | write32 SDWCR_A, SDWCR_D |
6c0bbdcc | 114 | |
f7e78f3b | 115 | write32 SDPCR_A, SDPCR_D |
6c0bbdcc | 116 | |
f7e78f3b | 117 | write32 RTCOR_A, RTCOR_D |
6c0bbdcc | 118 | |
f7e78f3b | 119 | write32 RTCSR_A, RTCSR_D |
6c0bbdcc | 120 | |
c9935c99 | 121 | write8 SDMR3_A, SDMR3_D |
6c0bbdcc | 122 | |
e4430779 | 123 | ! BL bit off (init = ON) (?!?) |
6c0bbdcc NI |
124 | |
125 | stc sr, r0 ! BL bit off(init=ON) | |
126 | mov.l SR_MASK_D, r1 | |
127 | and r1, r0 | |
128 | ldc r0, sr | |
129 | ||
130 | rts | |
131 | mov #0, r0 | |
132 | ||
6c0bbdcc NI |
133 | .align 2 |
134 | ||
61fb15c5 | 135 | CCR_A: .long CCR |
6c0bbdcc NI |
136 | MMUCR_A: .long MMUCR |
137 | MSTPCR0_A: .long MSTPCR0 | |
138 | MSTPCR2_A: .long MSTPCR2 | |
139 | SBSCR_A: .long SBSCR | |
140 | PSCR_A: .long PSCR | |
141 | RWTCSR_A: .long RWTCSR | |
142 | RWTCNT_A: .long RWTCNT | |
143 | FRQCR_A: .long FRQCR | |
144 | ||
145 | CCR_D: .long 0x00000800 | |
146 | CCR_D_2: .long 0x00000103 | |
147 | MMUCR_D: .long 0x00000004 | |
148 | MSTPCR0_D: .long 0x00001001 | |
149 | MSTPCR2_D: .long 0xffffffff | |
150 | FRQCR_D: .long 0x07022538 | |
151 | ||
e4430779 JCPV |
152 | PSELA_A: .long 0xa405014E |
153 | PSELA_D: .word 0x0A10 | |
61fb15c5 | 154 | .align 2 |
6c0bbdcc | 155 | |
e4430779 JCPV |
156 | DRVCR_A: .long 0xa405018A |
157 | DRVCR_D: .word 0x0554 | |
6c0bbdcc NI |
158 | .align 2 |
159 | ||
e4430779 JCPV |
160 | PCCR_A: .long 0xa4050104 |
161 | PCCR_D: .word 0x8800 | |
6c0bbdcc NI |
162 | .align 2 |
163 | ||
e4430779 JCPV |
164 | PECR_A: .long 0xa4050108 |
165 | PECR_D: .word 0x0000 | |
6c0bbdcc NI |
166 | .align 2 |
167 | ||
e4430779 JCPV |
168 | PJCR_A: .long 0xa4050110 |
169 | PJCR_D: .word 0x1000 | |
6c0bbdcc NI |
170 | .align 2 |
171 | ||
e4430779 JCPV |
172 | PXCR_A: .long 0xa4050148 |
173 | PXCR_D: .word 0x0AAA | |
6c0bbdcc NI |
174 | .align 2 |
175 | ||
176 | CMNCR_A: .long CMNCR | |
177 | CMNCR_D: .long 0x00000013 | |
178 | CS0BCR_A: .long CS0BCR ! Flash bank 1 | |
179 | CS0BCR_D: .long 0x24920400 | |
180 | CS2BCR_A: .long CS2BCR ! SRAM | |
181 | CS2BCR_D: .long 0x24920400 | |
182 | CS4BCR_A: .long CS4BCR ! FPGA, PCMCIA, USB, ext slot | |
183 | CS4BCR_D: .long 0x24920400 | |
184 | CS5ABCR_A: .long CS5ABCR ! Ext slot | |
185 | CS5ABCR_D: .long 0x24920400 | |
186 | CS5BBCR_A: .long CS5BBCR ! USB controller | |
187 | CS5BBCR_D: .long 0x24920400 | |
188 | CS6ABCR_A: .long CS6ABCR ! Ethernet | |
189 | CS6ABCR_D: .long 0x24920400 | |
190 | ||
191 | CS0WCR_A: .long CS0WCR | |
192 | CS0WCR_D: .long 0x00000300 | |
193 | CS2WCR_A: .long CS2WCR | |
194 | CS2WCR_D: .long 0x00000300 | |
195 | CS4WCR_A: .long CS4WCR | |
196 | CS4WCR_D: .long 0x00000300 | |
197 | CS5AWCR_A: .long CS5AWCR | |
198 | CS5AWCR_D: .long 0x00000300 | |
199 | CS5BWCR_A: .long CS5BWCR | |
200 | CS5BWCR_D: .long 0x00000300 | |
201 | CS6AWCR_A: .long CS6AWCR | |
202 | CS6AWCR_D: .long 0x00000300 | |
203 | ||
204 | SDCR_A: .long SBSC_SDCR | |
205 | SDCR_D: .long 0x00020809 | |
206 | SDWCR_A: .long SBSC_SDWCR | |
207 | SDWCR_D: .long 0x00164d0d | |
208 | SDPCR_A: .long SBSC_SDPCR | |
209 | SDPCR_D: .long 0x00000087 | |
210 | RTCOR_A: .long SBSC_RTCOR | |
211 | RTCOR_D: .long 0xA55A0034 | |
212 | RTCSR_A: .long SBSC_RTCSR | |
213 | RTCSR_D: .long 0xA55A0010 | |
214 | SDMR3_A: .long 0xFE500180 | |
c9935c99 | 215 | SDMR3_D: .long 0x0 |
6c0bbdcc NI |
216 | |
217 | .align 1 | |
218 | ||
219 | SBSCR_D: .word 0x0040 | |
220 | PSCR_D: .word 0x0000 | |
221 | RWTCSR_D_1: .word 0xA507 | |
222 | RWTCSR_D_2: .word 0xA507 | |
223 | RWTCNT_D: .word 0x5A00 | |
b5d10a13 | 224 | .align 2 |
6c0bbdcc NI |
225 | |
226 | SR_MASK_D: .long 0xEFFFFF0F |