3 * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 * Kenati Technologies, Inc.
8 * board/ms7722se/lowlevel_init.S
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.
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.
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,
29 #include <asm/processor.h>
30 #include <asm/macro.h>
33 * Board specific low level init code, called _very_ early in the
34 * startup sequence. Relocation to SDRAM has not happened yet, no
35 * stack is available, bss section has not been initialised, etc.
37 * (Note: As no stack is available, no subroutines can be called...).
48 * Cache Control Register
49 * Instruction Cache Invalidate
54 * Address of MMU Control Register
55 * TI == TLB Invalidate bit
57 write32 MMUCR_A, MMUCR_D
59 /* Address of Power Control Register 0 */
60 write32 MSTPCR0_A, MSTPCR0_D
62 /* Address of Power Control Register 2 */
63 write32 MSTPCR2_A, MSTPCR2_D
65 write16 SBSCR_A, SBSCR_D
67 write16 PSCR_A, PSCR_D
69 /* 0xA4520004 (Watchdog Control / Status Register) */
70 ! write16 RWTCSR_A, RWTCSR_D_1 /* 0xA507 -> timer_STOP/WDT_CLK=max */
72 /* 0xA4520000 (Watchdog Count Register) */
73 write16 RWTCNT_A, RWTCNT_D /*0x5A00 -> Clear */
75 /* 0xA4520004 (Watchdog Control / Status Register) */
76 write16 RWTCSR_A, RWTCSR_D_2 /* 0xA504 -> timer_STOP/CLK=500ms */
78 /* 0xA4150000 Frequency control register */
79 write32 FRQCR_A, FRQCR_D
81 write32 CCR_A, CCR_D_2
85 write16 PSELA_A, PSELA_D
87 write16 DRVCR_A, DRVCR_D
89 write16 PCCR_A, PCCR_D
91 write16 PECR_A, PECR_D
93 write16 PJCR_A, PJCR_D
95 write16 PXCR_A, PXCR_D
97 write32 CMNCR_A, CMNCR_D
99 write32 CS0BCR_A, CS0BCR_D
101 write32 CS2BCR_A, CS2BCR_D
103 write32 CS4BCR_A, CS4BCR_D
105 write32 CS5ABCR_A, CS5ABCR_D
107 write32 CS5BBCR_A, CS5BBCR_D
109 write32 CS6ABCR_A, CS6ABCR_D
111 write32 CS0WCR_A, CS0WCR_D
113 write32 CS2WCR_A, CS2WCR_D
115 write32 CS4WCR_A, CS4WCR_D
117 write32 CS5AWCR_A, CS5AWCR_D
119 write32 CS5BWCR_A, CS5BWCR_D
121 write32 CS6AWCR_A, CS6AWCR_D
123 ! SDRAM initialization
124 write32 SDCR_A, SDCR_D
126 write32 SDWCR_A, SDWCR_D
128 write32 SDPCR_A, SDPCR_D
130 write32 RTCOR_A, RTCOR_D
132 write32 RTCSR_A, RTCSR_D
134 write8 SDMR3_A, SDMR3_D
136 ! BL bit off (init = ON) (?!?)
138 stc sr, r0 ! BL bit off(init=ON)
150 MSTPCR0_A: .long MSTPCR0
151 MSTPCR2_A: .long MSTPCR2
154 RWTCSR_A: .long RWTCSR
155 RWTCNT_A: .long RWTCNT
158 CCR_D: .long 0x00000800
159 CCR_D_2: .long 0x00000103
160 MMUCR_D: .long 0x00000004
161 MSTPCR0_D: .long 0x00001001
162 MSTPCR2_D: .long 0xffffffff
163 FRQCR_D: .long 0x07022538
165 PSELA_A: .long 0xa405014E
166 PSELA_D: .word 0x0A10
169 DRVCR_A: .long 0xa405018A
170 DRVCR_D: .word 0x0554
173 PCCR_A: .long 0xa4050104
177 PECR_A: .long 0xa4050108
181 PJCR_A: .long 0xa4050110
185 PXCR_A: .long 0xa4050148
190 CMNCR_D: .long 0x00000013
191 CS0BCR_A: .long CS0BCR ! Flash bank 1
192 CS0BCR_D: .long 0x24920400
193 CS2BCR_A: .long CS2BCR ! SRAM
194 CS2BCR_D: .long 0x24920400
195 CS4BCR_A: .long CS4BCR ! FPGA, PCMCIA, USB, ext slot
196 CS4BCR_D: .long 0x24920400
197 CS5ABCR_A: .long CS5ABCR ! Ext slot
198 CS5ABCR_D: .long 0x24920400
199 CS5BBCR_A: .long CS5BBCR ! USB controller
200 CS5BBCR_D: .long 0x24920400
201 CS6ABCR_A: .long CS6ABCR ! Ethernet
202 CS6ABCR_D: .long 0x24920400
204 CS0WCR_A: .long CS0WCR
205 CS0WCR_D: .long 0x00000300
206 CS2WCR_A: .long CS2WCR
207 CS2WCR_D: .long 0x00000300
208 CS4WCR_A: .long CS4WCR
209 CS4WCR_D: .long 0x00000300
210 CS5AWCR_A: .long CS5AWCR
211 CS5AWCR_D: .long 0x00000300
212 CS5BWCR_A: .long CS5BWCR
213 CS5BWCR_D: .long 0x00000300
214 CS6AWCR_A: .long CS6AWCR
215 CS6AWCR_D: .long 0x00000300
217 SDCR_A: .long SBSC_SDCR
218 SDCR_D: .long 0x00020809
219 SDWCR_A: .long SBSC_SDWCR
220 SDWCR_D: .long 0x00164d0d
221 SDPCR_A: .long SBSC_SDPCR
222 SDPCR_D: .long 0x00000087
223 RTCOR_A: .long SBSC_RTCOR
224 RTCOR_D: .long 0xA55A0034
225 RTCSR_A: .long SBSC_RTCSR
226 RTCSR_D: .long 0xA55A0010
227 SDMR3_A: .long 0xFE500180
232 SBSCR_D: .word 0x0040
234 RWTCSR_D_1: .word 0xA507
235 RWTCSR_D_2: .word 0xA507
236 RWTCNT_D: .word 0x5A00
239 SR_MASK_D: .long 0xEFFFFF0F