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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 52b0f877a271c0e5b43cc0753c25b2b944ea7dcd / . / board / denx / m28evk / mmc_boot.c
blob: 86d3ab5e1cb2565010df73aad2f1720b44712183 [file] [log] [blame]
Marek Vasut04fe4272011-11-08 23:18:21 +0000[diff] [blame]1/*
2 * Freescale i.MX28 Boot setup
3 *
4 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
5 * on behalf of DENX Software Engineering GmbH
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 <config.h>
28#include <asm/io.h>
29#include <asm/arch/iomux-mx28.h>
30
31#include "m28_init.h"
32
33/*
34 * This delay function is intended to be used only in early stage of boot, where
35 * clock are not set up yet. The timer used here is reset on every boot and
36 * takes a few seconds to roll. The boot doesn't take that long, so to keep the
37 * code simple, it doesn't take rolling into consideration.
38 */
39#define HW_DIGCTRL_MICROSECONDS 0x8001c0c0
40void early_delay(int delay)
41{
42 uint32_t st = readl(HW_DIGCTRL_MICROSECONDS);
43 st += delay;
44 while (st > readl(HW_DIGCTRL_MICROSECONDS))
45 ;
46}
47
48#define MUX_CONFIG_LED (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
49#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA)
50#define MUX_CONFIG_TSC (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
51#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP)
52#define MUX_CONFIG_SSP2 (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
53#define MUX_CONFIG_GPMI (MXS_PAD_1V8 | MXS_PAD_4MA | MXS_PAD_NOPULL)
54#define MUX_CONFIG_ENET (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
55#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
56
57const iomux_cfg_t iomux_setup[] = {
58 /* LED */
59 MX28_PAD_ENET0_RXD3__GPIO_4_10 | MUX_CONFIG_LED,
60
61 /* framebuffer */
62 MX28_PAD_LCD_D00__LCD_D0 | MUX_CONFIG_LCD,
63 MX28_PAD_LCD_D01__LCD_D1 | MUX_CONFIG_LCD,
64 MX28_PAD_LCD_D02__LCD_D2 | MUX_CONFIG_LCD,
65 MX28_PAD_LCD_D03__LCD_D3 | MUX_CONFIG_LCD,
66 MX28_PAD_LCD_D04__LCD_D4 | MUX_CONFIG_LCD,
67 MX28_PAD_LCD_D05__LCD_D5 | MUX_CONFIG_LCD,
68 MX28_PAD_LCD_D06__LCD_D6 | MUX_CONFIG_LCD,
69 MX28_PAD_LCD_D07__LCD_D7 | MUX_CONFIG_LCD,
70 MX28_PAD_LCD_D08__LCD_D8 | MUX_CONFIG_LCD,
71 MX28_PAD_LCD_D09__LCD_D9 | MUX_CONFIG_LCD,
72 MX28_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD,
73 MX28_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD,
74 MX28_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD,
75 MX28_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD,
76 MX28_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD,
77 MX28_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD,
78 MX28_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD,
79 MX28_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD,
80 MX28_PAD_LCD_D18__LCD_D18 | MUX_CONFIG_LCD,
81 MX28_PAD_LCD_D19__LCD_D19 | MUX_CONFIG_LCD,
82 MX28_PAD_LCD_D20__LCD_D20 | MUX_CONFIG_LCD,
83 MX28_PAD_LCD_D21__LCD_D21 | MUX_CONFIG_LCD,
84 MX28_PAD_LCD_D22__LCD_D22 | MUX_CONFIG_LCD,
85 MX28_PAD_LCD_D23__LCD_D23 | MUX_CONFIG_LCD,
86 MX28_PAD_LCD_RD_E__LCD_VSYNC | MUX_CONFIG_LCD,
87 MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MUX_CONFIG_LCD,
88 MX28_PAD_LCD_RS__LCD_DOTCLK | MUX_CONFIG_LCD,
89 MX28_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD,
90 MX28_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD,
91 MX28_PAD_LCD_HSYNC__LCD_HSYNC | MUX_CONFIG_LCD,
92 MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MUX_CONFIG_LCD,
93 MX28_PAD_LCD_ENABLE__GPIO_1_31 | MUX_CONFIG_LCD,
94 MX28_PAD_LCD_RESET__GPIO_3_30 | MUX_CONFIG_LCD,
95
96 /* UART1 */
97 MX28_PAD_PWM0__DUART_RX,
98 MX28_PAD_PWM1__DUART_TX,
99 MX28_PAD_AUART0_TX__DUART_RTS,
100 MX28_PAD_AUART0_RX__DUART_CTS,
101
102 /* UART2 */
103 MX28_PAD_AUART1_RX__AUART1_RX,
104 MX28_PAD_AUART1_TX__AUART1_TX,
105 MX28_PAD_AUART1_RTS__AUART1_RTS,
106 MX28_PAD_AUART1_CTS__AUART1_CTS,
107
108 /* CAN */
109 MX28_PAD_GPMI_RDY2__CAN0_TX,
110 MX28_PAD_GPMI_RDY3__CAN0_RX,
111
112 /* I2C */
113 MX28_PAD_I2C0_SCL__I2C0_SCL,
114 MX28_PAD_I2C0_SDA__I2C0_SDA,
115
116 /* TSC2007 */
117 MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MUX_CONFIG_TSC,
118
119 /* MMC0 */
120 MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0,
121 MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0,
122 MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0,
123 MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0,
124 MX28_PAD_SSP0_DATA4__SSP0_D4 | MUX_CONFIG_SSP0,
125 MX28_PAD_SSP0_DATA5__SSP0_D5 | MUX_CONFIG_SSP0,
126 MX28_PAD_SSP0_DATA6__SSP0_D6 | MUX_CONFIG_SSP0,
127 MX28_PAD_SSP0_DATA7__SSP0_D7 | MUX_CONFIG_SSP0,
128 MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0,
129 MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
130 (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL),
131 MX28_PAD_SSP0_SCK__SSP0_SCK |
132 (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL),
133 MX28_PAD_PWM3__GPIO_3_28 | MUX_CONFIG_SSP0, /* Power .. FIXME */
134 MX28_PAD_AUART2_CTS__GPIO_3_10, /* WP ... FIXME */
135
136 /* GPMI NAND */
137 MX28_PAD_GPMI_D00__GPMI_D0 | MUX_CONFIG_GPMI,
138 MX28_PAD_GPMI_D01__GPMI_D1 | MUX_CONFIG_GPMI,
139 MX28_PAD_GPMI_D02__GPMI_D2 | MUX_CONFIG_GPMI,
140 MX28_PAD_GPMI_D03__GPMI_D3 | MUX_CONFIG_GPMI,
141 MX28_PAD_GPMI_D04__GPMI_D4 | MUX_CONFIG_GPMI,
142 MX28_PAD_GPMI_D05__GPMI_D5 | MUX_CONFIG_GPMI,
143 MX28_PAD_GPMI_D06__GPMI_D6 | MUX_CONFIG_GPMI,
144 MX28_PAD_GPMI_D07__GPMI_D7 | MUX_CONFIG_GPMI,
145 MX28_PAD_GPMI_CE0N__GPMI_CE0N | MUX_CONFIG_GPMI,
146 MX28_PAD_GPMI_RDY0__GPMI_READY0 | MUX_CONFIG_GPMI,
147 MX28_PAD_GPMI_RDN__GPMI_RDN |
148 (MXS_PAD_1V8 | MXS_PAD_8MA | MXS_PAD_PULLUP),
149 MX28_PAD_GPMI_WRN__GPMI_WRN | MUX_CONFIG_GPMI,
150 MX28_PAD_GPMI_ALE__GPMI_ALE | MUX_CONFIG_GPMI,
151 MX28_PAD_GPMI_CLE__GPMI_CLE | MUX_CONFIG_GPMI,
152 MX28_PAD_GPMI_RESETN__GPMI_RESETN | MUX_CONFIG_GPMI,
153
154 /* FEC Ethernet */
155 MX28_PAD_ENET0_MDC__ENET0_MDC | MUX_CONFIG_ENET,
156 MX28_PAD_ENET0_MDIO__ENET0_MDIO | MUX_CONFIG_ENET,
157 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MUX_CONFIG_ENET,
158 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MUX_CONFIG_ENET,
159 MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MUX_CONFIG_ENET,
160 MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MUX_CONFIG_ENET,
161 MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MUX_CONFIG_ENET,
162 MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MUX_CONFIG_ENET,
163 MX28_PAD_ENET_CLK__CLKCTRL_ENET | MUX_CONFIG_ENET,
164
165 MX28_PAD_ENET0_COL__ENET1_TX_EN | MUX_CONFIG_ENET,
166 MX28_PAD_ENET0_CRS__ENET1_RX_EN | MUX_CONFIG_ENET,
167 MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MUX_CONFIG_ENET,
168 MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MUX_CONFIG_ENET,
169 MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MUX_CONFIG_ENET,
170 MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MUX_CONFIG_ENET,
171
172 /* I2C */
173 MX28_PAD_I2C0_SCL__I2C0_SCL,
174 MX28_PAD_I2C0_SDA__I2C0_SDA,
175
176 /* EMI */
177 MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI,
178 MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI,
179 MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI,
180 MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI,
181 MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI,
182 MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI,
183 MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI,
184 MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI,
185 MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI,
186 MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI,
187 MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI,
188 MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI,
189 MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI,
190 MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI,
191 MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI,
192 MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI,
193 MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI,
194 MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI,
195 MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI,
196 MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI,
197 MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI,
198 MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI,
199 MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI,
200 MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI,
201 MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI,
202
203 MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI,
204 MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI,
205 MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI,
206 MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI,
207 MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI,
208 MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI,
209 MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI,
210 MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI,
211 MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI,
212 MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI,
213 MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI,
214 MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI,
215 MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI,
216 MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI,
217 MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI,
218 MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI,
219 MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI,
220 MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI,
221 MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI,
222 MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI,
223 MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI,
224 MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
225 MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
226 MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
227
228 /* SPI2 (for flash) */
229 MX28_PAD_SSP2_SCK__SSP2_SCK | MUX_CONFIG_SSP2,
230 MX28_PAD_SSP2_MOSI__SSP2_CMD | MUX_CONFIG_SSP2,
231 MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2,
232 MX28_PAD_SSP2_SS0__SSP2_D3 |
233 (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP),
234};
235
236void board_init_ll(void)
237{
238 mxs_iomux_setup_multiple_pads(iomux_setup, ARRAY_SIZE(iomux_setup));
239 mx28_power_init();
240 mx28_mem_init();
241 mx28_power_wait_pswitch();
242}
243
244/* Support aparatus */
245inline void board_init_f(unsigned long bootflag)
246{
247 for (;;)
248 ;
249}
250
251inline void board_init_r(gd_t *id, ulong dest_addr)
252{
253 for (;;)
254 ;
255}
256
257inline int printf(const char *fmt, ...)
258{
259 return 0;
260}
261
262inline void __coloured_LED_init(void) {}
263inline void __red_LED_on(void) {}
264void coloured_LED_init(void)
265 __attribute__((weak, alias("__coloured_LED_init")));
266void red_LED_on(void)
267 __attribute__((weak, alias("__red_LED_on")));
268void hang(void) __attribute__ ((noreturn));
269void hang(void)
270{
271 for (;;)
272 ;
273}