board/Barix/ipam390/ipam390.c

   1 /*
   2  * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
   3  * Based on:
   4  * U-Boot:board/davinci/da8xxevm/da850evm.c
   5  *
   6  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   7  *
   8  * Based on da830evm.c. Original Copyrights follow:
   9  *
  10  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
  11  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
  12  *
  13  * SPDX-License-Identifier:     GPL-2.0+
  14  */
  15
  16 #include <common.h>
  17 #include <i2c.h>
  18 #include <net.h>
  19 #include <netdev.h>
  20 #include <spi.h>
  21 #include <spi_flash.h>
  22 #include <asm/arch/hardware.h>
  23 #include <asm/ti-common/davinci_nand.h>
  24 #include <asm/arch/emac_defs.h>
  25 #include <asm/arch/pinmux_defs.h>
  26 #include <asm/io.h>
  27 #include <asm/arch/davinci_misc.h>
  28 #include <linux/errno.h>
  29 #include <asm/gpio.h>
  30 #include <hwconfig.h>
  31 #include <bootstage.h>
  32 #include <asm/mach-types.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 #ifdef CONFIG_DRIVER_TI_EMAC
  37 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
  38 #define HAS_RMII 1
  39 #else
  40 #define HAS_RMII 0
  41 #endif
  42 #endif /* CONFIG_DRIVER_TI_EMAC */
  43
  44 void dsp_lpsc_on(unsigned domain, unsigned int id)
  45 {
  46         dv_reg_p mdstat, mdctl, ptstat, ptcmd;
  47         struct davinci_psc_regs *psc_regs;
  48
  49         psc_regs = davinci_psc0_regs;
  50         mdstat = &psc_regs->psc0.mdstat[id];
  51         mdctl = &psc_regs->psc0.mdctl[id];
  52         ptstat = &psc_regs->ptstat;
  53         ptcmd = &psc_regs->ptcmd;
  54
  55         while (*ptstat & (0x1 << domain))
  56                 ;
  57
  58         if ((*mdstat & 0x1f) == 0x03)
  59                 return;                 /* Already on and enabled */
  60
  61         *mdctl |= 0x03;
  62
  63         *ptcmd = 0x1 << domain;
  64
  65         while (*ptstat & (0x1 << domain))
  66                 ;
  67         while ((*mdstat & 0x1f) != 0x03)
  68                 ;               /* Probably an overkill... */
  69 }
  70
  71 static void dspwake(void)
  72 {
  73         unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
  74         u32 val;
  75
  76         /* if the device is ARM only, return */
  77         if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
  78                 return;
  79
  80         if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
  81                 return;
  82
  83         *resetvect++ = 0x1E000; /* DSP Idle */
  84         /* clear out the next 10 words as NOP */
  85         memset(resetvect, 0, sizeof(unsigned) * 10);
  86
  87         /* setup the DSP reset vector */
  88         writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
  89
  90         dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
  91         val = readl(PSC0_MDCTL + (15 * 4));
  92         val |= 0x100;
  93         writel(val, (PSC0_MDCTL + (15 * 4)));
  94 }
  95
  96 int misc_init_r(void)
  97 {
  98         dspwake();
  99         return 0;
 100 }
 101
 102 static const struct pinmux_config gpio_pins[] = {
 103         /* GP7[14] selects bootmode*/
 104         { pinmux(16), 8, 3 },   /* GP7[14] */
 105 };
 106
 107 const struct pinmux_resource pinmuxes[] = {
 108 #ifdef CONFIG_DRIVER_TI_EMAC
 109         PINMUX_ITEM(emac_pins_mdio),
 110 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
 111         PINMUX_ITEM(emac_pins_rmii),
 112 #else
 113         PINMUX_ITEM(emac_pins_mii),
 114 #endif
 115 #endif
 116         PINMUX_ITEM(uart2_pins_txrx),
 117         PINMUX_ITEM(uart2_pins_rtscts),
 118         PINMUX_ITEM(uart0_pins_txrx),
 119         PINMUX_ITEM(uart0_pins_rtscts),
 120 #ifdef CONFIG_NAND_DAVINCI
 121         PINMUX_ITEM(emifa_pins_cs3),
 122         PINMUX_ITEM(emifa_pins_nand),
 123 #endif
 124         PINMUX_ITEM(gpio_pins),
 125 };
 126
 127 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
 128
 129 const struct lpsc_resource lpsc[] = {
 130         { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
 131         { DAVINCI_LPSC_EMAC },  /* image download */
 132         { DAVINCI_LPSC_UART2 }, /* console */
 133         { DAVINCI_LPSC_UART0 }, /* console */
 134         { DAVINCI_LPSC_GPIO },
 135 };
 136
 137 const int lpsc_size = ARRAY_SIZE(lpsc);
 138
 139 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
 140 #define CONFIG_DA850_EVM_MAX_CPU_CLK    300000000
 141 #endif
 142
 143 #define REV_AM18X_EVM           0x100
 144
 145 /*
 146  * get_board_rev() - setup to pass kernel board revision information
 147  * Returns:
 148  * bit[0-3]     Maximum cpu clock rate supported by onboard SoC
 149  *              0000b - 300 MHz
 150  *              0001b - 372 MHz
 151  *              0010b - 408 MHz
 152  *              0011b - 456 MHz
 153  */
 154 u32 get_board_rev(void)
 155 {
 156         char *s;
 157         u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
 158         u32 rev = 0;
 159
 160         s = env_get("maxcpuclk");
 161         if (s)
 162                 maxcpuclk = simple_strtoul(s, NULL, 10);
 163
 164         if (maxcpuclk >= 456000000)
 165                 rev = 3;
 166         else if (maxcpuclk >= 408000000)
 167                 rev = 2;
 168         else if (maxcpuclk >= 372000000)
 169                 rev = 1;
 170 #ifdef CONFIG_DA850_AM18X_EVM
 171         rev |= REV_AM18X_EVM;
 172 #endif
 173         return rev;
 174 }
 175
 176 int board_early_init_f(void)
 177 {
 178         /*
 179          * Power on required peripherals
 180          * ARM does not have access by default to PSC0 and PSC1
 181          * assuming here that the DSP bootloader has set the IOPU
 182          * such that PSC access is available to ARM
 183          */
 184         if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
 185                 return 1;
 186
 187         return 0;
 188 }
 189
 190 int board_init(void)
 191 {
 192         irq_init();
 193
 194         /* arch number of the board */
 195         gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
 196
 197         /* address of boot parameters */
 198         gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
 199
 200         /* setup the SUSPSRC for ARM to control emulation suspend */
 201         writel(readl(&davinci_syscfg_regs->suspsrc) &
 202                ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
 203                  DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
 204                  DAVINCI_SYSCFG_SUSPSRC_UART0),
 205                &davinci_syscfg_regs->suspsrc);
 206
 207         /* configure pinmux settings */
 208         if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
 209                 return 1;
 210
 211 #ifdef CONFIG_DRIVER_TI_EMAC
 212         davinci_emac_mii_mode_sel(HAS_RMII);
 213 #endif /* CONFIG_DRIVER_TI_EMAC */
 214
 215         /* enable the console UART */
 216         writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
 217                 DAVINCI_UART_PWREMU_MGMT_UTRST),
 218 #if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
 219                &davinci_uart0_ctrl_regs->pwremu_mgmt);
 220 #else
 221                &davinci_uart2_ctrl_regs->pwremu_mgmt);
 222 #endif
 223         return 0;
 224 }
 225
 226 #ifdef CONFIG_DRIVER_TI_EMAC
 227 /*
 228  * Initializes on-board ethernet controllers.
 229  */
 230 int board_eth_init(bd_t *bis)
 231 {
 232         if (!davinci_emac_initialize()) {
 233                 printf("Error: Ethernet init failed!\n");
 234                 return -1;
 235         }
 236
 237         return 0;
 238 }
 239 #endif /* CONFIG_DRIVER_TI_EMAC */
 240
 241 static int init_led(int gpio, char *name, int val)
 242 {
 243         int ret;
 244
 245         ret = gpio_request(gpio, name);
 246         if (ret)
 247                 return -1;
 248         ret = gpio_direction_output(gpio, val);
 249         if (ret)
 250                 return -1;
 251
 252         return gpio;
 253 }
 254
 255 #define LED_ON  0
 256 #define LED_OFF 1
 257
 258 #if !defined(CONFIG_SPL_BUILD)
 259 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 260 void show_boot_progress(int status)
 261 {
 262         static int red;
 263         static int green;
 264
 265         if (red == 0)
 266                 red = init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
 267         if (red != CONFIG_IPAM390_GPIO_LED_RED)
 268                 return;
 269         if (green == 0)
 270                 green = init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green",
 271                                  LED_OFF);
 272         if (green != CONFIG_IPAM390_GPIO_LED_GREEN)
 273                 return;
 274
 275         switch (status) {
 276         case BOOTSTAGE_ID_RUN_OS:
 277                 /*
 278                  * set normal state
 279                  * LED Red  : on
 280                  * LED green: off
 281                  */
 282                 gpio_set_value(red, LED_ON);
 283                 gpio_set_value(green, LED_OFF);
 284                 break;
 285         case BOOTSTAGE_ID_MAIN_LOOP:
 286                 /*
 287                  * U-Boot operation
 288                  * LED Red  : on
 289                  * LED green: on
 290                  */
 291                 gpio_set_value(red, LED_ON);
 292                 gpio_set_value(green, LED_ON);
 293                 break;
 294         }
 295 }
 296 #endif
 297 #endif
 298
 299 #ifdef CONFIG_SPL_OS_BOOT
 300 int spl_start_uboot(void)
 301 {
 302         int ret;
 303         int bootmode = 0;
 304
 305         /*
 306          * GP7[14] selects bootmode:
 307          * 1: boot linux
 308          * 0: boot u-boot
 309          * if error accessing gpio boot U-Boot
 310          *
 311          * SPL bootmode
 312          * 0: boot linux
 313          * 1: boot u-boot
 314          */
 315         ret = gpio_request(CONFIG_IPAM390_GPIO_BOOTMODE , "bootmode");
 316         if (ret)
 317                 bootmode = 1;
 318         if (!bootmode) {
 319                 ret = gpio_direction_input(CONFIG_IPAM390_GPIO_BOOTMODE);
 320                 if (ret)
 321                         bootmode = 1;
 322         }
 323         if (!bootmode)
 324                 ret = gpio_get_value(CONFIG_IPAM390_GPIO_BOOTMODE);
 325         if (!bootmode)
 326                 if (ret == 0)
 327                         bootmode = 1;
 328         /*
 329          * LED red  : on
 330          * LED green: off
 331          */
 332         init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
 333         init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green", LED_OFF);
 334         return bootmode;
 335 }
 336 #endif