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| 1 | +/*! \page License |
| 2 | + * Copyright (C) 2009, H&D Wireless AB All rights reserved. |
| 3 | + * |
| 4 | + * Redistribution and use in source and binary forms, with or without |
| 5 | + * modification, are permitted provided that the following conditions are met: |
| 6 | + * |
| 7 | + * 1. Redistributions of source code must retain the above copyright notice, |
| 8 | + * this list of conditions and the following disclaimer. |
| 9 | + * |
| 10 | + * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | + * this list of conditions and the following disclaimer in the documentation |
| 12 | + * and/or other materials provided with the distribution. |
| 13 | + * |
| 14 | + * 3. The name of H&D Wireless AB may not be used to endorse or promote products derived |
| 15 | + * from this software without specific prior written permission. |
| 16 | + * |
| 17 | + * THIS SOFTWARE IS PROVIDED BY H&D WIRELESS AB ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 18 | + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND |
| 20 | + * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, |
| 21 | + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 22 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | + */ |
| 28 | + |
| 29 | +#include <pm.h> |
| 30 | +#include <flashc.h> |
| 31 | +#include <intc.h> |
| 32 | +#include <board.h> |
| 33 | +#include <gpio.h> |
| 34 | +#ifdef WITH_SDRAM |
| 35 | + #include <sdramc.h> |
| 36 | +#endif |
| 37 | +#include <board_init.h> |
| 38 | +#include <spi.h> |
| 39 | + |
| 40 | +#ifndef NO_SERIAL /* The bootloader does not want serial port |
| 41 | + * code */ |
| 42 | +#include <usart.h> |
| 43 | + |
| 44 | +int board_putchar(char c) |
| 45 | +{ |
| 46 | + int timeout = USART_DEFAULT_TIMEOUT; |
| 47 | + if (c == '\n') { |
| 48 | + do { |
| 49 | + if (!timeout--) |
| 50 | + return USART_FAILURE; |
| 51 | + } while (usart_write_char(&CONFIG_CONSOLE_PORT, '\r') != |
| 52 | + USART_SUCCESS); |
| 53 | + |
| 54 | + timeout = USART_DEFAULT_TIMEOUT; |
| 55 | + } |
| 56 | + |
| 57 | + do { |
| 58 | + if (!timeout--) |
| 59 | + return USART_FAILURE; |
| 60 | + } while (usart_write_char(&CONFIG_CONSOLE_PORT, c) != USART_SUCCESS); |
| 61 | + |
| 62 | + return USART_SUCCESS; |
| 63 | +} |
| 64 | +#endif /* NO_SERIAL */ |
| 65 | +/** |
| 66 | + * Initializes the MCU system clocks. |
| 67 | + */ |
| 68 | +static void |
| 69 | +init_sys_clocks(void) |
| 70 | +{ |
| 71 | + |
| 72 | + /* if we don't run on OSC0 don't switch to it since we don't know |
| 73 | + * what kind of oscillator we have here |
| 74 | + */ |
| 75 | + |
| 76 | +#if OSC == 0 |
| 77 | + /* switch to OSC0 to speed up the booting */ |
| 78 | + pm_switch_to_osc0(&AVR32_PM, FOSC0, OSC0_STARTUP); |
| 79 | +#endif |
| 80 | + |
| 81 | + |
| 82 | +#ifndef USE_PLL |
| 83 | + return; |
| 84 | +#endif |
| 85 | + |
| 86 | + /* For audio, ee have to use OSC1 on to generate the correct clockrate |
| 87 | + * for the SSC |
| 88 | + */ |
| 89 | +#if OSC == 1 |
| 90 | + /* start oscillator1 */ |
| 91 | + pm_enable_osc1_crystal(&AVR32_PM, FOSC1); |
| 92 | + pm_enable_clk1(&AVR32_PM, OSC1_STARTUP); |
| 93 | +#endif |
| 94 | + |
| 95 | + /* configure pll multipliers */ |
| 96 | + pm_pll_setup(&AVR32_PM, |
| 97 | + 0, /* pll */ |
| 98 | + PLL_MUL, /* mul */ |
| 99 | + 1, /* div */ |
| 100 | + OSC, /* osc */ |
| 101 | + 16); /* lockcount */ |
| 102 | + |
| 103 | + /* set PLL operating range and divider (fpll = fvco/2) |
| 104 | + * this gives PLL output = 66 MHz (62.0928 MHz for EVK1105/OSC1) |
| 105 | + */ |
| 106 | + pm_pll_set_option(&AVR32_PM, |
| 107 | + 0, /* pll */ |
| 108 | + 1, /* pll_freq */ |
| 109 | + 1, /* pll_div2 */ |
| 110 | + 0); /* pll_wbwdisable. */ |
| 111 | + |
| 112 | + |
| 113 | + /* start PLL0 and wait for the lock */ |
| 114 | + pm_pll_enable(&AVR32_PM, 0); |
| 115 | + pm_wait_for_pll0_locked(&AVR32_PM); |
| 116 | + |
| 117 | + /* Set all peripheral clocks torun at master clock rate */ |
| 118 | + pm_cksel(&AVR32_PM, |
| 119 | + 0, /* pbadiv */ |
| 120 | + 0, /* pbasel */ |
| 121 | + 0, /* pbbdiv */ |
| 122 | + 0, /* pbbsel */ |
| 123 | + 0, /* hsbdiv */ |
| 124 | + 0); /* hsbsel */ |
| 125 | + |
| 126 | + /* Set one waitstate for the flash */ |
| 127 | + flashc_set_wait_state(1); |
| 128 | + |
| 129 | + /* Switch to PLL0 as the master clock */ |
| 130 | + pm_switch_to_clock(&AVR32_PM, AVR32_PM_MCCTRL_MCSEL_PLL0); |
| 131 | +} |
| 132 | + |
| 133 | +static void init_exceptions(void) |
| 134 | +{ |
| 135 | + extern void _evba; |
| 136 | + Set_system_register(AVR32_EVBA, (int)&_evba); |
| 137 | + Enable_global_exception(); |
| 138 | +} |
| 139 | + |
| 140 | +static void init_hmatrix(void) |
| 141 | +{ |
| 142 | + union { |
| 143 | + unsigned long scfg; |
| 144 | + avr32_hmatrix_scfg_t SCFG; |
| 145 | + } u_avr32_hmatrix_scfg = { |
| 146 | + AVR32_HMATRIX.scfg[AVR32_HMATRIX_SLAVE_FLASH] |
| 147 | + }; |
| 148 | + u_avr32_hmatrix_scfg.SCFG.defmstr_type = |
| 149 | + AVR32_HMATRIX_DEFMSTR_TYPE_LAST_DEFAULT; |
| 150 | + AVR32_HMATRIX.scfg[AVR32_HMATRIX_SLAVE_FLASH] = |
| 151 | + u_avr32_hmatrix_scfg.scfg; |
| 152 | +} |
| 153 | + |
| 154 | +static void init_interrupts(void) |
| 155 | +{ |
| 156 | + INTC_init_interrupts(); |
| 157 | + Enable_global_interrupt(); |
| 158 | +} |
| 159 | + |
| 160 | +static void init_spi(void) |
| 161 | +{ |
| 162 | +#if defined(WL_SPI) |
| 163 | + int i; |
| 164 | +#endif |
| 165 | + |
| 166 | + |
| 167 | +#if defined(AT45DBX_SPI) |
| 168 | + static const gpio_map_t AT45DBX_SPI_GPIO_MAP = { |
| 169 | + { AT45DBX_SPI_SCK_PIN, AT45DBX_SPI_SCK_FUNCTION }, |
| 170 | + { AT45DBX_SPI_MISO_PIN, AT45DBX_SPI_MISO_FUNCTION }, |
| 171 | + { AT45DBX_SPI_MOSI_PIN, AT45DBX_SPI_MOSI_FUNCTION }, |
| 172 | + { AT45DBX_SPI_NPCS2_PIN, AT45DBX_SPI_NPCS2_FUNCTION }, |
| 173 | + }; |
| 174 | +#endif |
| 175 | + |
| 176 | + |
| 177 | +#if defined(WL_SPI) |
| 178 | + const gpio_map_t WL_SPI_GPIO_MAP = { |
| 179 | +#if defined(WL_SPI_NPCS0) |
| 180 | + WL_SPI_NPCS0, |
| 181 | +#endif |
| 182 | + WL_SPI_NPCS, WL_SPI_MISO, WL_SPI_MOSI, WL_SPI_SCK |
| 183 | + }; |
| 184 | +#endif |
| 185 | + |
| 186 | +#if defined(WL_SPI) || defined(AT45DBX_SPI) |
| 187 | + spi_options_t spiOptions = { |
| 188 | + .modfdis = 1 /* only param used by spi_initMaster() */ |
| 189 | + }; |
| 190 | +#endif |
| 191 | + |
| 192 | +#if defined(AT45DBX_SPI) |
| 193 | + gpio_enable_module(AT45DBX_SPI_GPIO_MAP, |
| 194 | + sizeof(AT45DBX_SPI_GPIO_MAP) / |
| 195 | + sizeof(AT45DBX_SPI_GPIO_MAP[0])); |
| 196 | + spi_initMaster(AT45DBX_SPI, &spiOptions); |
| 197 | + spi_selectionMode(AT45DBX_SPI, 0, 0, 0); |
| 198 | +#endif |
| 199 | + |
| 200 | +#if defined(WL_SPI) |
| 201 | + /* same pins might be initialized twice here */ |
| 202 | + gpio_enable_module(WL_SPI_GPIO_MAP, |
| 203 | + sizeof(WL_SPI_GPIO_MAP) / |
| 204 | + sizeof(WL_SPI_GPIO_MAP[0])); |
| 205 | + for (i = 0; i < sizeof(WL_SPI_GPIO_MAP)/sizeof(WL_SPI_GPIO_MAP[0]); i++) |
| 206 | + gpio_enable_pin_pull_up(WL_SPI_GPIO_MAP[i].pin); |
| 207 | + |
| 208 | + /* same SPI controller might be initialized again */ |
| 209 | + spi_initMaster(&WL_SPI, &spiOptions); |
| 210 | + spi_selectionMode(&WL_SPI, 0, 0, 0); |
| 211 | +#endif |
| 212 | + |
| 213 | +#if defined(AT45DBX_SPI) |
| 214 | + spi_enable(AT45DBX_SPI); |
| 215 | + |
| 216 | + /* put up flash reset pin */ |
| 217 | + gpio_set_gpio_pin(AT45DBX_CHIP_RESET); |
| 218 | +#endif |
| 219 | + |
| 220 | +#if defined(WL_SPI) |
| 221 | + spi_enable(&WL_SPI); |
| 222 | +#endif |
| 223 | +} |
| 224 | + |
| 225 | + |
| 226 | +static void init_rs232(void) |
| 227 | +{ |
| 228 | +#ifndef NO_SERIAL |
| 229 | +#if defined(BOARD_RS232_0) |
| 230 | + const gpio_map_t BOARD_RS232_0_GPIO_MAP = { |
| 231 | + BOARD_RS232_0_TX, |
| 232 | + BOARD_RS232_0_RX, |
| 233 | +#if defined(BOARD_RS232_0_RTS) && defined (BOARD_RS232_0_CTS) |
| 234 | + BOARD_RS232_0_RTS, |
| 235 | + BOARD_RS232_0_CTS |
| 236 | +#endif |
| 237 | + |
| 238 | + }; |
| 239 | +#endif |
| 240 | + |
| 241 | +#if defined(BOARD_RS232_1) |
| 242 | + const gpio_map_t BOARD_RS232_1_GPIO_MAP = { |
| 243 | + BOARD_RS232_1_TX, |
| 244 | + BOARD_RS232_1_RX |
| 245 | +#if defined(BOARD_RS232_1_RTS) && defined (BOARD_RS232_1_CTS) |
| 246 | + BOARD_RS232_1_RTS, |
| 247 | + BOARD_RS232_1_CTS |
| 248 | +#endif |
| 249 | + }; |
| 250 | +#endif |
| 251 | + |
| 252 | +#if defined(BOARD_RS232_0) |
| 253 | + gpio_enable_module(BOARD_RS232_0_GPIO_MAP, |
| 254 | + sizeof(BOARD_RS232_0_GPIO_MAP) / |
| 255 | + sizeof(BOARD_RS232_0_GPIO_MAP[0])); |
| 256 | +#endif |
| 257 | + |
| 258 | +#if defined(BOARD_RS232_1) |
| 259 | + gpio_enable_module(BOARD_RS232_1_GPIO_MAP, |
| 260 | + sizeof(BOARD_RS232_1_GPIO_MAP) / |
| 261 | + sizeof(BOARD_RS232_1_GPIO_MAP[0])); |
| 262 | +#endif |
| 263 | +#endif /* NO_SERIAL */ |
| 264 | +} |
| 265 | + |
| 266 | +static void init_printk(void) |
| 267 | +{ |
| 268 | +#ifndef NO_SERIAL |
| 269 | +#if defined(CONFIG_CONSOLE_PORT) |
| 270 | + const usart_options_t usart_options = { |
| 271 | + .baudrate = 57600, |
| 272 | + .charlength = 8, |
| 273 | + .paritytype = USART_NO_PARITY, |
| 274 | + .stopbits = USART_1_STOPBIT, |
| 275 | + .channelmode = USART_NORMAL_CHMODE |
| 276 | + }; |
| 277 | + usart_init_rs232(&CONFIG_CONSOLE_PORT, &usart_options, FPBA_HZ); |
| 278 | +#endif |
| 279 | +#endif /* NO_SERIAL */ |
| 280 | +} |
| 281 | + |
| 282 | +void board_init(void) |
| 283 | +{ |
| 284 | + |
| 285 | + init_exceptions(); |
| 286 | + init_hmatrix(); |
| 287 | + init_sys_clocks(); |
| 288 | + init_interrupts(); |
| 289 | + |
| 290 | + init_rs232(); |
| 291 | + init_printk(); |
| 292 | + |
| 293 | +#ifdef WITH_SDRAM |
| 294 | + sdramc_init(FHSB_HZ); |
| 295 | +#endif |
| 296 | + init_spi(); |
| 297 | +} |
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