board/atmel/at91cap9adk/at91cap9adk.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop@leadtechdesign.com>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  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 <common.h>
  26 #include <asm/arch/at91cap9.h>
  27 #include <asm/arch/at91cap9_matrix.h>
  28 #include <asm/arch/at91sam9_smc.h>
  29 #include <asm/arch/at91_common.h>
  30 #include <asm/arch/at91_pmc.h>
  31 #include <asm/arch/at91_rstc.h>
  32 #include <asm/arch/clk.h>
  33 #include <asm/arch/gpio.h>
  34 #include <asm/arch/io.h>
  35 #include <asm/arch/hardware.h>
  36 #include <lcd.h>
  37 #include <atmel_lcdc.h>
  38 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  39 #include <net.h>
  40 #endif
  41 #include <netdev.h>
  42
  43 #define MP_BLOCK_3_BASE 0xFDF00000
  44
  45 DECLARE_GLOBAL_DATA_PTR;
  46
  47 /* ------------------------------------------------------------------------- */
  48 /*
  49  * Miscelaneous platform dependent initialisations
  50  */
  51
  52 static void at91cap9_slowclock_hw_init(void)
  53 {
  54         /*
  55          * On AT91CAP9 revC CPUs, the slow clock can be based on an
  56          * internal impreciseRC oscillator or an external 32kHz oscillator.
  57          * Switch to the latter.
  58          */
  59 #define ARCH_ID_AT91CAP9_REVB   0x399
  60 #define ARCH_ID_AT91CAP9_REVC   0x601
  61         if (at91_sys_read(AT91_PMC_VER) == ARCH_ID_AT91CAP9_REVC) {
  62                 unsigned i, tmp = at91_sys_read(AT91_SCKCR);
  63                 if ((tmp & AT91CAP9_SCKCR_OSCSEL) == AT91CAP9_SCKCR_OSCSEL_RC) {
  64                         timer_init();
  65                         tmp |= AT91CAP9_SCKCR_OSC32EN;
  66                         at91_sys_write(AT91_SCKCR, tmp);
  67                         for (i = 0; i < 1200; i++)
  68                                 udelay(1000);
  69                         tmp |= AT91CAP9_SCKCR_OSCSEL_32;
  70                         at91_sys_write(AT91_SCKCR, tmp);
  71                         udelay(200);
  72                         tmp &= ~AT91CAP9_SCKCR_RCEN;
  73                         at91_sys_write(AT91_SCKCR, tmp);
  74                 }
  75         }
  76 }
  77
  78 static void at91cap9_nor_hw_init(void)
  79 {
  80         unsigned long csa;
  81
  82         /* Ensure EBI supply is 3.3V */
  83         csa = at91_sys_read(AT91_MATRIX_EBICSA);
  84         at91_sys_write(AT91_MATRIX_EBICSA,
  85                        csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
  86         /* Configure SMC CS0 for parallel flash */
  87         at91_sys_write(AT91_SMC_SETUP(0),
  88                        AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2) |
  89                        AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));
  90         at91_sys_write(AT91_SMC_PULSE(0),
  91                        AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10) |
  92                        AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));
  93         at91_sys_write(AT91_SMC_CYCLE(0),
  94                        AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
  95         at91_sys_write(AT91_SMC_MODE(0),
  96                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  97                        AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE |
  98                        AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
  99 }
 100
 101 #ifdef CONFIG_CMD_NAND
 102 static void at91cap9_nand_hw_init(void)
 103 {
 104         unsigned long csa;
 105
 106         /* Enable CS3 */
 107         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 108         at91_sys_write(AT91_MATRIX_EBICSA,
 109                        csa | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA |
 110                        AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 111
 112         /* Configure SMC CS3 for NAND/SmartMedia */
 113         at91_sys_write(AT91_SMC_SETUP(3),
 114                        AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(1) |
 115                        AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(1));
 116         at91_sys_write(AT91_SMC_PULSE(3),
 117                        AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(6) |
 118                        AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(6));
 119         at91_sys_write(AT91_SMC_CYCLE(3),
 120                        AT91_SMC_NWECYCLE_(8) | AT91_SMC_NRDCYCLE_(8));
 121         at91_sys_write(AT91_SMC_MODE(3),
 122                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
 123                        AT91_SMC_EXNWMODE_DISABLE |
 124 #ifdef CONFIG_SYS_NAND_DBW_16
 125                        AT91_SMC_DBW_16 |
 126 #else /* CONFIG_SYS_NAND_DBW_8 */
 127                        AT91_SMC_DBW_8 |
 128 #endif
 129                        AT91_SMC_TDF_(1));
 130
 131         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_PIOABCD);
 132
 133         /* RDY/BSY is not connected */
 134
 135         /* Enable NandFlash */
 136         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
 137 }
 138 #endif
 139
 140 #ifdef CONFIG_MACB
 141 static void at91cap9_macb_hw_init(void)
 142 {
 143         /* Enable clock */
 144         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_EMAC);
 145
 146         /*
 147          * Disable pull-up on:
 148          *      RXDV (PB22) => PHY normal mode (not Test mode)
 149          *      ERX0 (PB25) => PHY ADDR0
 150          *      ERX1 (PB26) => PHY ADDR1 => PHYADDR = 0x0
 151          *
 152          * PHY has internal pull-down
 153          */
 154         writel(pin_to_mask(AT91_PIN_PB22) |
 155                pin_to_mask(AT91_PIN_PB25) |
 156                pin_to_mask(AT91_PIN_PB26),
 157                pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
 158
 159         /* Need to reset PHY -> 500ms reset */
 160         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 161                                      (AT91_RSTC_ERSTL & (0x0D << 8)) |
 162                                      AT91_RSTC_URSTEN);
 163
 164         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
 165
 166         /* Wait for end hardware reset */
 167         while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
 168
 169         /* Restore NRST value */
 170         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 171                                      (AT91_RSTC_ERSTL & (0x0 << 8)) |
 172                                      AT91_RSTC_URSTEN);
 173
 174         /* Re-enable pull-up */
 175         writel(pin_to_mask(AT91_PIN_PB22) |
 176                pin_to_mask(AT91_PIN_PB25) |
 177                pin_to_mask(AT91_PIN_PB26),
 178                pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
 179
 180         at91_macb_hw_init();
 181
 182         /* Unlock EMAC, 3 0 2 1 sequence */
 183 #define MP_MAC_KEY0     0x5969cb2a
 184 #define MP_MAC_KEY1     0xb4a1872e
 185 #define MP_MAC_KEY2     0x05683fbc
 186 #define MP_MAC_KEY3     0x3634fba4
 187 #define UNLOCK_MAC      0x00000008
 188         writel(MP_MAC_KEY3, MP_BLOCK_3_BASE + 0x3c);
 189         writel(MP_MAC_KEY0, MP_BLOCK_3_BASE + 0x30);
 190         writel(MP_MAC_KEY2, MP_BLOCK_3_BASE + 0x38);
 191         writel(MP_MAC_KEY1, MP_BLOCK_3_BASE + 0x34);
 192         writel(UNLOCK_MAC, MP_BLOCK_3_BASE + 0x40);
 193 }
 194 #endif
 195
 196 #ifdef CONFIG_USB_OHCI_NEW
 197 static void at91cap9_uhp_hw_init(void)
 198 {
 199         /* Unlock USB OHCI, 3 2 0 1 sequence */
 200 #define MP_OHCI_KEY0    0x896c11ca
 201 #define MP_OHCI_KEY1    0x68ebca21
 202 #define MP_OHCI_KEY2    0x4823efbc
 203 #define MP_OHCI_KEY3    0x8651aae4
 204 #define UNLOCK_OHCI     0x00000010
 205         writel(MP_OHCI_KEY3, MP_BLOCK_3_BASE + 0x3c);
 206         writel(MP_OHCI_KEY2, MP_BLOCK_3_BASE + 0x38);
 207         writel(MP_OHCI_KEY0, MP_BLOCK_3_BASE + 0x30);
 208         writel(MP_OHCI_KEY1, MP_BLOCK_3_BASE + 0x34);
 209         writel(UNLOCK_OHCI, MP_BLOCK_3_BASE + 0x40);
 210 }
 211 #endif
 212
 213 #ifdef CONFIG_LCD
 214 vidinfo_t panel_info = {
 215         vl_col:         240,
 216         vl_row:         320,
 217         vl_clk:         4965000,
 218         vl_sync:        ATMEL_LCDC_INVLINE_INVERTED |
 219                         ATMEL_LCDC_INVFRAME_INVERTED,
 220         vl_bpix:        3,
 221         vl_tft:         1,
 222         vl_hsync_len:   5,
 223         vl_left_margin: 1,
 224         vl_right_margin:33,
 225         vl_vsync_len:   1,
 226         vl_upper_margin:1,
 227         vl_lower_margin:0,
 228         mmio:           AT91CAP9_LCDC_BASE,
 229 };
 230
 231 void lcd_enable(void)
 232 {
 233         at91_set_gpio_value(AT91_PIN_PC0, 0);  /* power up */
 234 }
 235
 236 void lcd_disable(void)
 237 {
 238         at91_set_gpio_value(AT91_PIN_PC0, 1);  /* power down */
 239 }
 240
 241 static void at91cap9_lcd_hw_init(void)
 242 {
 243         at91_set_A_periph(AT91_PIN_PC1, 0);     /* LCDHSYNC */
 244         at91_set_A_periph(AT91_PIN_PC2, 0);     /* LCDDOTCK */
 245         at91_set_A_periph(AT91_PIN_PC3, 0);     /* LCDDEN */
 246         at91_set_B_periph(AT91_PIN_PB9, 0);     /* LCDCC */
 247         at91_set_A_periph(AT91_PIN_PC6, 0);     /* LCDD2 */
 248         at91_set_A_periph(AT91_PIN_PC7, 0);     /* LCDD3 */
 249         at91_set_A_periph(AT91_PIN_PC8, 0);     /* LCDD4 */
 250         at91_set_A_periph(AT91_PIN_PC9, 0);     /* LCDD5 */
 251         at91_set_A_periph(AT91_PIN_PC10, 0);    /* LCDD6 */
 252         at91_set_A_periph(AT91_PIN_PC11, 0);    /* LCDD7 */
 253         at91_set_A_periph(AT91_PIN_PC14, 0);    /* LCDD10 */
 254         at91_set_A_periph(AT91_PIN_PC15, 0);    /* LCDD11 */
 255         at91_set_A_periph(AT91_PIN_PC16, 0);    /* LCDD12 */
 256         at91_set_A_periph(AT91_PIN_PC17, 0);    /* LCDD13 */
 257         at91_set_A_periph(AT91_PIN_PC18, 0);    /* LCDD14 */
 258         at91_set_A_periph(AT91_PIN_PC19, 0);    /* LCDD15 */
 259         at91_set_A_periph(AT91_PIN_PC22, 0);    /* LCDD18 */
 260         at91_set_A_periph(AT91_PIN_PC23, 0);    /* LCDD19 */
 261         at91_set_A_periph(AT91_PIN_PC24, 0);    /* LCDD20 */
 262         at91_set_A_periph(AT91_PIN_PC25, 0);    /* LCDD21 */
 263         at91_set_A_periph(AT91_PIN_PC26, 0);    /* LCDD22 */
 264         at91_set_A_periph(AT91_PIN_PC27, 0);    /* LCDD23 */
 265
 266         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_LCDC);
 267
 268         gd->fb_base = 0;
 269 }
 270
 271 #ifdef CONFIG_LCD_INFO
 272 #include <nand.h>
 273 #include <version.h>
 274
 275 void lcd_show_board_info(void)
 276 {
 277         ulong dram_size, nand_size;
 278         int i;
 279         char temp[32];
 280
 281         lcd_printf ("%s\n", U_BOOT_VERSION);
 282         lcd_printf ("(C) 2008 ATMEL Corp\n");
 283         lcd_printf ("at91support@atmel.com\n");
 284         lcd_printf ("%s CPU at %s MHz\n",
 285                 AT91_CPU_NAME,
 286                 strmhz(temp, get_cpu_clk_rate()));
 287
 288         dram_size = 0;
 289         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
 290                 dram_size += gd->bd->bi_dram[i].size;
 291         nand_size = 0;
 292         for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
 293                 nand_size += nand_info[i].size;
 294         lcd_printf ("  %ld MB SDRAM, %ld MB NAND\n",
 295                 dram_size >> 20,
 296                 nand_size >> 20 );
 297 }
 298 #endif /* CONFIG_LCD_INFO */
 299 #endif
 300
 301 int board_init(void)
 302 {
 303         /* Enable Ctrlc */
 304         console_init_f();
 305
 306         /* arch number of AT91CAP9ADK-Board */
 307         gd->bd->bi_arch_number = MACH_TYPE_AT91CAP9ADK;
 308         /* adress of boot parameters */
 309         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 310
 311         at91_serial_hw_init();
 312         at91cap9_slowclock_hw_init();
 313         at91cap9_nor_hw_init();
 314 #ifdef CONFIG_CMD_NAND
 315         at91cap9_nand_hw_init();
 316 #endif
 317 #ifdef CONFIG_HAS_DATAFLASH
 318         at91_spi0_hw_init(1 << 0);
 319 #endif
 320 #ifdef CONFIG_MACB
 321         at91cap9_macb_hw_init();
 322 #endif
 323 #ifdef CONFIG_USB_OHCI_NEW
 324         at91cap9_uhp_hw_init();
 325 #endif
 326 #ifdef CONFIG_LCD
 327         at91cap9_lcd_hw_init();
 328 #endif
 329         return 0;
 330 }
 331
 332 int dram_init(void)
 333 {
 334         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 335         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 336         return 0;
 337 }
 338
 339 #ifdef CONFIG_RESET_PHY_R
 340 void reset_phy(void)
 341 {
 342 #ifdef CONFIG_MACB
 343         /*
 344          * Initialize ethernet HW addr prior to starting Linux,
 345          * needed for nfsroot
 346          */
 347         eth_init(gd->bd);
 348 #endif
 349 }
 350 #endif
 351
 352 int board_eth_init(bd_t *bis)
 353 {
 354         int rc = 0;
 355 #ifdef CONFIG_MACB
 356         rc = macb_eth_initialize(0, (void *)AT91CAP9_BASE_EMAC, 0x00);
 357 #endif
 358         return rc;
 359 }