1 /* 2 * (C) Copyright 2007-2008 3 * Stelian Pop <stelian@popies.net> 4 * Lead Tech Design <www.leadtechdesign.com> 5 * 6 * (C) Copyright 2009-2011 7 * Daniel Gorsulowski <daniel.gorsulowski@esd.eu> 8 * esd electronic system design gmbh <www.esd.eu> 9 * 10 * See file CREDITS for list of people who contributed to this 11 * project. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation; either version 2 of 16 * the License, or (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 26 * MA 02111-1307 USA 27 */ 28 29 #include <common.h> 30 #include <asm/io.h> 31 #include <asm/arch/at91sam9_smc.h> 32 #include <asm/arch/at91_common.h> 33 #include <asm/arch/at91_pmc.h> 34 #include <asm/arch/at91_rstc.h> 35 #include <asm/arch/at91_matrix.h> 36 #include <asm/arch/at91_pio.h> 37 #include <asm/arch/clk.h> 38 #include <netdev.h> 39 40 DECLARE_GLOBAL_DATA_PTR; 41 42 /* 43 * Miscelaneous platform dependent initialisations 44 */ 45 46 static int hw_rev = -1; /* hardware revision */ 47 48 int get_hw_rev(void) 49 { 50 if (hw_rev >= 0) 51 return hw_rev; 52 53 hw_rev = at91_get_pio_value(AT91_PIO_PORTB, 19); 54 hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 20) << 1; 55 hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 21) << 2; 56 hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 22) << 3; 57 58 if (hw_rev == 15) 59 hw_rev = 0; 60 61 return hw_rev; 62 } 63 64 #ifdef CONFIG_CMD_NAND 65 static void meesc_nand_hw_init(void) 66 { 67 unsigned long csa; 68 at91_smc_t *smc = (at91_smc_t *) ATMEL_BASE_SMC0; 69 at91_matrix_t *matrix = (at91_matrix_t *) ATMEL_BASE_MATRIX; 70 71 /* Enable CS3 */ 72 csa = readl(&matrix->csa[0]) | AT91_MATRIX_CSA_EBI_CS3A; 73 writel(csa, &matrix->csa[0]); 74 75 /* Configure SMC CS3 for NAND/SmartMedia */ 76 writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(1) | 77 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(2), 78 &smc->cs[3].setup); 79 80 writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) | 81 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3), 82 &smc->cs[3].pulse); 83 84 writel(AT91_SMC_CYCLE_NWE(6) | AT91_SMC_CYCLE_NRD(6), 85 &smc->cs[3].cycle); 86 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE | 87 AT91_SMC_MODE_EXNW_DISABLE | 88 AT91_SMC_MODE_DBW_8 | 89 AT91_SMC_MODE_TDF_CYCLE(12), 90 &smc->cs[3].mode); 91 92 /* Configure RDY/BSY */ 93 at91_set_pio_input(CONFIG_SYS_NAND_READY_PIN, 1); 94 95 /* Enable NandFlash */ 96 at91_set_pio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1); 97 } 98 #endif /* CONFIG_CMD_NAND */ 99 100 #ifdef CONFIG_MACB 101 static void meesc_macb_hw_init(void) 102 { 103 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; 104 /* Enable clock */ 105 writel(1 << ATMEL_ID_EMAC, &pmc->pcer); 106 at91_macb_hw_init(); 107 } 108 #endif 109 110 /* 111 * Static memory controller initialization to enable Beckhoff ET1100 EtherCAT 112 * controller debugging 113 * The ET1100 is located at physical address 0x70000000 114 * Its process memory is located at physical address 0x70001000 115 */ 116 static void meesc_ethercat_hw_init(void) 117 { 118 at91_smc_t *smc1 = (at91_smc_t *) ATMEL_BASE_SMC1; 119 120 /* Configure SMC EBI1_CS0 for EtherCAT */ 121 writel(AT91_SMC_SETUP_NWE(0) | AT91_SMC_SETUP_NCS_WR(0) | 122 AT91_SMC_SETUP_NRD(0) | AT91_SMC_SETUP_NCS_RD(0), 123 &smc1->cs[0].setup); 124 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(9) | 125 AT91_SMC_PULSE_NRD(5) | AT91_SMC_PULSE_NCS_RD(9), 126 &smc1->cs[0].pulse); 127 writel(AT91_SMC_CYCLE_NWE(10) | AT91_SMC_CYCLE_NRD(6), 128 &smc1->cs[0].cycle); 129 /* 130 * Configure behavior at external wait signal, byte-select mode, 16 bit 131 * data bus width, none data float wait states and TDF optimization 132 */ 133 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_EXNW_READY | 134 AT91_SMC_MODE_DBW_16 | AT91_SMC_MODE_TDF_CYCLE(0) | 135 AT91_SMC_MODE_TDF, &smc1->cs[0].mode); 136 137 /* Configure RDY/BSY */ 138 at91_set_b_periph(AT91_PIO_PORTE, 20, 0); /* EBI1_NWAIT */ 139 } 140 141 int dram_init(void) 142 { 143 gd->ram_size = get_ram_size( 144 (void *)CONFIG_SYS_SDRAM_BASE, 145 CONFIG_SYS_SDRAM_SIZE); 146 return 0; 147 } 148 149 int board_eth_init(bd_t *bis) 150 { 151 int rc = 0; 152 #ifdef CONFIG_MACB 153 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00); 154 #endif 155 return rc; 156 } 157 158 int checkboard(void) 159 { 160 char str[32]; 161 u_char hw_type; /* hardware type */ 162 163 /* read the "Type" register of the ET1100 controller */ 164 hw_type = readb(CONFIG_ET1100_BASE); 165 166 switch (hw_type) { 167 case 0x11: 168 case 0x3F: 169 /* ET1100 present, arch number of MEESC-Board */ 170 gd->bd->bi_arch_number = MACH_TYPE_MEESC; 171 puts("Board: CAN-EtherCAT Gateway"); 172 break; 173 case 0xFF: 174 /* no ET1100 present, arch number of EtherCAN/2-Board */ 175 gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2; 176 puts("Board: EtherCAN/2 Gateway"); 177 /* switch on LED1D */ 178 at91_set_pio_output(AT91_PIO_PORTB, 12, 1); 179 break; 180 default: 181 /* assume, no ET1100 present, arch number of EtherCAN/2-Board */ 182 gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2; 183 printf("ERROR! Read invalid hw_type: %02X\n", hw_type); 184 puts("Board: EtherCAN/2 Gateway"); 185 break; 186 } 187 if (getenv_f("serial#", str, sizeof(str)) > 0) { 188 puts(", serial# "); 189 puts(str); 190 } 191 printf("\nHardware-revision: 1.%d\n", get_hw_rev()); 192 printf("Mach-type: %lu\n", gd->bd->bi_arch_number); 193 return 0; 194 } 195 196 #ifdef CONFIG_SERIAL_TAG 197 void get_board_serial(struct tag_serialnr *serialnr) 198 { 199 char *str; 200 201 char *serial = getenv("serial#"); 202 if (serial) { 203 str = strchr(serial, '_'); 204 if (str && (strlen(str) >= 4)) { 205 serialnr->high = (*(str + 1) << 8) | *(str + 2); 206 serialnr->low = simple_strtoul(str + 3, NULL, 16); 207 } 208 } else { 209 serialnr->high = 0; 210 serialnr->low = 0; 211 } 212 } 213 #endif 214 215 #ifdef CONFIG_REVISION_TAG 216 u32 get_board_rev(void) 217 { 218 return hw_rev | 0x100; 219 } 220 #endif 221 222 #ifdef CONFIG_MISC_INIT_R 223 int misc_init_r(void) 224 { 225 char *str; 226 char buf[32]; 227 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; 228 229 /* 230 * Normally the processor clock has a divisor of 2. 231 * In some cases this this needs to be set to 4. 232 * Check the user has set environment mdiv to 4 to change the divisor. 233 */ 234 if ((str = getenv("mdiv")) && (strcmp(str, "4") == 0)) { 235 writel((readl(&pmc->mckr) & ~AT91_PMC_MDIV) | 236 AT91SAM9_PMC_MDIV_4, &pmc->mckr); 237 at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); 238 serial_setbrg(); 239 /* Notify the user that the clock is not default */ 240 printf("Setting master clock to %s MHz\n", 241 strmhz(buf, get_mck_clk_rate())); 242 } 243 244 return 0; 245 } 246 #endif /* CONFIG_MISC_INIT_R */ 247 248 int board_early_init_f(void) 249 { 250 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; 251 252 /* enable all clocks */ 253 writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) | 254 (1 << ATMEL_ID_PIOCDE) | (1 << ATMEL_ID_UHP), 255 &pmc->pcer); 256 257 at91_seriald_hw_init(); 258 259 return 0; 260 } 261 262 int board_init(void) 263 { 264 /* initialize ET1100 Controller */ 265 meesc_ethercat_hw_init(); 266 267 /* adress of boot parameters */ 268 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 269 270 #ifdef CONFIG_CMD_NAND 271 meesc_nand_hw_init(); 272 #endif 273 #ifdef CONFIG_HAS_DATAFLASH 274 at91_spi0_hw_init(1 << 0); 275 #endif 276 #ifdef CONFIG_MACB 277 meesc_macb_hw_init(); 278 #endif 279 #ifdef CONFIG_AT91_CAN 280 at91_can_hw_init(); 281 #endif 282 #ifdef CONFIG_USB_OHCI_NEW 283 at91_uhp_hw_init(); 284 #endif 285 return 0; 286 } 287