Gitiles
Code Review Sign In
gerrit.cesnet.cz / github / trini / u-boot / b9233fe5d59cb25d975071616bd1035d6f4c2285 / . / board / voiceblue / setup.S
blob: 78cd2b6bfeeaa35b2da9a4c0c61993c124d757b3 [file] [log] [blame]
wdenk3c2b3d42005-04-05 23:32:21 +0000[diff] [blame]1/*
2 * Board specific setup info
3 *
4 * (C) Copyright 2004 Ales Jindra <jindra@2n.cz>
5 * (C) Copyright 2005 Ladislav Michl <michl@2n.cz>
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
12 * version 2 published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#include <config.h>
26#include <version.h>
27
28_TEXT_BASE:
29 .word TEXT_BASE /* SDRAM load addr from config.mk */
30
31OMAP5910_LPG1_BASE: .word 0xfffbd000
32OMAP5910_TIPB_SWITCHES_BASE: .word 0xfffbc800
33OMAP5910_MPU_TC_BASE: .word 0xfffecc00
34OMAP5910_MPU_CLKM_BASE: .word 0xfffece00
35OMAP5910_ULPD_PWR_MNG_BASE: .word 0xfffe0800
36OMAP5910_DPLL1_BASE: .word 0xfffecf00
37OMAP5910_GPIO_BASE: .word 0xfffce000
38OMAP5910_MPU_WD_TIMER_BASE: .word 0xfffec800
39OMAP5910_MPUI_BASE: .word 0xfffec900
40
41_OMAP5910_ARM_CKCTL: .word OMAP5910_ARM_CKCTL
42_OMAP5910_ARM_EN_CLK: .word OMAP5910_ARM_EN_CLK
43
44OMAP5910_MPUI_CTRL: .word 0x0000ff1b
45
46VAL_EMIFS_CS0_CONFIG: .word 0x00009090
47VAL_EMIFS_CS1_CONFIG: .word 0x00003031
48VAL_EMIFS_CS2_CONFIG: .word 0x00003031
49VAL_EMIFS_CS3_CONFIG: .word 0x0000c0c0
50VAL_EMIFS_DYN_WAIT: .word 0x00000000
51/* autorefresh counter 0x246 ((64000000/13.4)-400)/8192) */
52 /* SLRF SD_RET ARE SDRAM_TYPE ARCV SDRAM_FREQUENCY PWD CLK */
53VAL_EMIFF_SDRAM_CONFIG: .word ((0 << 0) | (0 << 1) | (3 << 2) | (0xd << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27))
54VAL_EMIFF_SDRAM_CONFIG2: .word 0x00000003
55VAL_EMIFF_MRS: .word 0x00000037
56
57/*
58 * GPIO04 - D4 (Onboard LED)
59 * GPIO07 - LAN91C111 reset
60 */
61GPIO_DIRECTION:
62 .word 0x0000ff6f
63/*
64 * Disable everything, but D4 LED (connected through invertor)
65 */
66GPIO_OUTPUT:
67 .word 0x00000010
68
69MUX_CONFIG_BASE:
70 .word 0xfffe1000
71
72MUX_CONFIG_VALUES:
73 .align 4
74 .word 0x00000000 @ FUNC_MUX_CTRL_0
75 .word 0x00000000 @ FUNC_MUX_CTRL_1
76 .word 0x00000000 @ FUNC_MUX_CTRL_2
77 .word 0x00000000 @ FUNC_MUX_CTRL_3
78 .word 0x00000000 @ FUNC_MUX_CTRL_4
79 .word 0x12082480 @ FUNC_MUX_CTRL_5
Ladislav Michl4fedfdd2007-12-07 00:42:32 +0100[diff] [blame]80 .word 0x0000001c @ FUNC_MUX_CTRL_6
wdenk3c2b3d42005-04-05 23:32:21 +0000[diff] [blame]81 .word 0x00000003 @ FUNC_MUX_CTRL_7
82 .word 0x10001200 @ FUNC_MUX_CTRL_8
83 .word 0x01201012 @ FUNC_MUX_CTRL_9
84 .word 0x02081248 @ FUNC_MUX_CTRL_A
85 .word 0x00001248 @ FUNC_MUX_CTRL_B
86 .word 0x12240000 @ FUNC_MUX_CTRL_C
87 .word 0x00002000 @ FUNC_MUX_CTRL_D
88 .word 0x00000000 @ PULL_DWN_CTRL_0
89 .word 0x0000085f @ PULL_DWN_CTRL_1
90 .word 0x01001000 @ PULL_DWN_CTRL_2
91 .word 0x00000000 @ PULL_DWN_CTRL_3
92 .word 0x00000000 @ GATE_INH_CTRL_0
93 .word 0x00000000 @ VOLTAGE_CTRL_0
94 .word 0x00000000 @ TEST_DBG_CTRL_0
95 .word 0x00000006 @ MOD_CONF_CTRL_0
96 .word 0x0000eaef @ COMP_MODE_CTRL_0
97
98MUX_CONFIG_OFFSETS:
99 .align 1
100 .byte 0x00 @ FUNC_MUX_CTRL_0
101 .byte 0x04 @ FUNC_MUX_CTRL_1
102 .byte 0x08 @ FUNC_MUX_CTRL_2
103 .byte 0x10 @ FUNC_MUX_CTRL_3
104 .byte 0x14 @ FUNC_MUX_CTRL_4
105 .byte 0x18 @ FUNC_MUX_CTRL_5
106 .byte 0x1c @ FUNC_MUX_CTRL_6
107 .byte 0x20 @ FUNC_MUX_CTRL_7
108 .byte 0x24 @ FUNC_MUX_CTRL_8
109 .byte 0x28 @ FUNC_MUX_CTRL_9
110 .byte 0x2c @ FUNC_MUX_CTRL_A
111 .byte 0x30 @ FUNC_MUX_CTRL_B
112 .byte 0x34 @ FUNC_MUX_CTRL_C
113 .byte 0x38 @ FUNC_MUX_CTRL_D
114 .byte 0x40 @ PULL_DWN_CTRL_0
115 .byte 0x44 @ PULL_DWN_CTRL_1
116 .byte 0x48 @ PULL_DWN_CTRL_2
117 .byte 0x4c @ PULL_DWN_CTRL_3
118 .byte 0x50 @ GATE_INH_CTRL_0
119 .byte 0x60 @ VOLTAGE_CTRL_0
120 .byte 0x70 @ TEST_DBG_CTRL_0
121 .byte 0x80 @ MOD_CONF_CTRL_0
122 .byte 0x0c @ COMP_MODE_CTRL_0
123 .byte 0xff
124
Wolfgang Denk87cb6862005-10-06 17:08:18 +0200[diff] [blame]125.globl lowlevel_init
126lowlevel_init:
wdenk3c2b3d42005-04-05 23:32:21 +0000[diff] [blame]127 /* Improve performance a bit... */
128 mrc p15, 0, r1, c0, c0, 0 @ read C15 ID register
129 mrc p15, 0, r1, c0, c0, 1 @ read C15 Cache information register
130 mrc p15, 0, r1, c1, c0, 0 @ read C15 Control register
131 orr r1, r1, #0x1000 @ enable I-cache, map interrupt vector 0xffff0000
132 mcr p15, 0, r1, c1, c0, 0 @ write C15 Control register
133 mov r1, #0x00
134 mcr p15, 0, r1, c7, c5, 0 @ Flush I-cache
135 nop
136 nop
137 nop
138 nop
139
140 /* Setup clocking mode */
141 ldr r0, OMAP5910_MPU_CLKM_BASE @ prepare base of CLOCK unit
142 ldrh r1, [r0, #0x18] @ get reset status
143 bic r1, r1, #(7 << 11) @ clear clock select
144 orr r1, r1, #(2 << 11) @ set synchronous scalable
145 mov r2, #0 @ set wait counter to 100 clock cycles
146
147icache_loop:
148 cmp r2, #0x01
149 streqh r1, [r0, #0x18]
150 add r2, r2, #0x01
151 cmp r2, #0x10
152 bne icache_loop
153 nop
154
155 /* Setup clock divisors */
156 ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit
157 ldr r1, _OMAP5910_ARM_CKCTL
158 orr r1, r1, #0x2000 @ enable DSP clock
159 strh r1, [r0, #0x00] @ setup clock divisors
160
161 /* Setup DPLL to generate requested freq */
162 ldr r0, OMAP5910_DPLL1_BASE @ base of DPLL1 register
163 mov r1, #0x0010 @ set PLL_ENABLE
164 orr r1, r1, #0x2000 @ set IOB to new locking
165 orr r1, r1, #(OMAP5910_DPLL_MUL << 7) @ setup multiplier CLKREF
166 orr r1, r1, #(OMAP5910_DPLL_DIV << 5) @ setup divider CLKREF
167 strh r1, [r0] @ write
168
169locking:
170 ldrh r1, [r0] @ get DPLL value
171 tst r1, #0x01
172 beq locking @ while LOCK not set
173
174 /* Enable clock */
175 ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit
176 mov r1, #(1 << 10) @ disable idle mode do not check
177 @ nWAKEUP pin, other remain active
178 strh r1, [r0, #0x04]
179 ldr r1, _OMAP5910_ARM_EN_CLK
180 strh r1, [r0, #0x08]
181 mov r1, #0x003f @ FLASH.RP not enabled in idle and
182 @ max delayed ( 32 x CLKIN )
183 strh r1, [r0, #0x0c]
184
185 /* Configure 5910 pins functions to match our board. */
186 ldr r0, MUX_CONFIG_BASE
187 adr r1, MUX_CONFIG_VALUES
188 adr r2, MUX_CONFIG_OFFSETS
189next_mux_cfg:
190 ldrb r3, [r2], #1
191 ldr r4, [r1], #4
192 cmp r3, #0xff
193 strne r4, [r0, r3]
194 bne next_mux_cfg
195
196 /* Configure GPIO pins (also enables onboard LED) */
197 ldr r0, OMAP5910_GPIO_BASE
198 ldr r1, GPIO_OUTPUT
199 strh r1, [r0, #0x04]
200 ldr r1, GPIO_DIRECTION
201 strh r1, [r0, #0x08]
202
203 /* EnablePeripherals */
204 ldr r0, OMAP5910_MPU_CLKM_BASE @ CLOCK unit
205 mov r1, #0x0001 @ Peripheral enable
206 strh r1, [r0, #0x14]
207
208 /* Program LED Pulse Generator */
209 ldr r0, OMAP5910_LPG1_BASE @ 1st LED Pulse Generator
210 mov r1, #0x7F @ Set obscure frequency in
211 strb r1, [r0, #0x00] @ LCR
212 mov r1, #0x01 @ Enable clock (CLK_EN) in
213 strb r1, [r0, #0x04] @ PMR
214
215 /* TIPB Lock UART1 */
216 ldr r0, OMAP5910_TIPB_SWITCHES_BASE @ prepare base of TIPB switches
217 mov r1, #1 @ ARM allocated
218 strh r1, [r0,#0x04] @ clear IRQ line and status bits
219 strh r1, [r0,#0x00]
220 ldrh r1, [r0,#0x04]
221
222 /* Disable watchdog */
223 ldr r0, OMAP5910_MPU_WD_TIMER_BASE
224 mov r1, #0xf5
225 strh r1, [r0, #0x8]
226 mov r1, #0xa0
227 strh r1, [r0, #0x8]
228
229 /* Enable MCLK */
230 ldr r0, OMAP5910_ULPD_PWR_MNG_BASE
231 mov r1, #0x6
232 strh r1, [r0, #0x34]
233 strh r1, [r0, #0x34]
234
235 /* Setup clock divisors */
236 ldr r0, OMAP5910_ULPD_PWR_MNG_BASE @ base of ULDPL DPLL1 register
237
238 mov r1, #0x0010 @ set PLL_ENABLE
239 orr r1, r1, #0x2000 @ set IOB to new locking
240 strh r1, [r0] @ write
241
242ulocking:
243 ldrh r1, [r0] @ get DPLL value
244 tst r1, #1
245 beq ulocking @ while LOCK not set
246
247 /* EMIF init */
248 ldr r0, OMAP5910_MPU_TC_BASE
249 ldrh r1, [r0, #0x0c] @ EMIFS_CONFIG_REG
250 bic r1, r1, #0x0c @ pwr down disabled, flash WP
251 orr r1, r1, #0x01
252 str r1, [r0, #0x0c]
253
254 ldr r1, VAL_EMIFS_CS0_CONFIG
255 str r1, [r0, #0x10] @ EMIFS_CS0_CONFIG
256 ldr r1, VAL_EMIFS_CS1_CONFIG
257 str r1, [r0, #0x14] @ EMIFS_CS1_CONFIG
258 ldr r1, VAL_EMIFS_CS2_CONFIG
259 str r1, [r0, #0x18] @ EMIFS_CS2_CONFIG
260 ldr r1, VAL_EMIFS_CS3_CONFIG
261 str r1, [r0, #0x1c] @ EMIFS_CS3_CONFIG
262 ldr r1, VAL_EMIFS_DYN_WAIT
263 str r1, [r0, #0x40] @ EMIFS_CFG_DYN_WAIT
264
265 /* Setup SDRAM */
266 ldr r1, VAL_EMIFF_SDRAM_CONFIG
267 str r1, [r0, #0x20] @ EMIFF_SDRAM_CONFIG
268 ldr r1, VAL_EMIFF_SDRAM_CONFIG2
269 str r1, [r0, #0x3c] @ EMIFF_SDRAM_CONFIG2
270 ldr r1, VAL_EMIFF_MRS
271 str r1, [r0, #0x24] @ EMIFF_MRS
272 /* SDRAM needs 100us to stabilize */
273 mov r0, #0x4000
274sdelay:
275 subs r0, r0, #0x1
276 bne sdelay
277
278 /* back to arch calling code */
279 mov pc, lr
280.end