arch/arm/mach-rockchip/rk3288-board-spl.c

   1 /*
   2  * (C) Copyright 2015 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <debug_uart.h>
   9 #include <dm.h>
  10 #include <fdtdec.h>
  11 #include <i2c.h>
  12 #include <led.h>
  13 #include <malloc.h>
  14 #include <ram.h>
  15 #include <spl.h>
  16 #include <asm/gpio.h>
  17 #include <asm/io.h>
  18 #include <asm/arch/bootrom.h>
  19 #include <asm/arch/clock.h>
  20 #include <asm/arch/hardware.h>
  21 #include <asm/arch/periph.h>
  22 #include <asm/arch/pmu_rk3288.h>
  23 #include <asm/arch/sdram.h>
  24 #include <asm/arch/sdram_common.h>
  25 #include <asm/arch/sys_proto.h>
  26 #include <asm/arch/timer.h>
  27 #include <dm/pinctrl.h>
  28 #include <dm/root.h>
  29 #include <dm/test.h>
  30 #include <dm/util.h>
  31 #include <power/regulator.h>
  32 #include <power/rk8xx_pmic.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 u32 spl_boot_device(void)
  37 {
  38 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
  39         const void *blob = gd->fdt_blob;
  40         struct udevice *dev;
  41         const char *bootdev;
  42         int node;
  43         int ret;
  44
  45         bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
  46         debug("Boot device %s\n", bootdev);
  47         if (!bootdev)
  48                 goto fallback;
  49
  50         node = fdt_path_offset(blob, bootdev);
  51         if (node < 0) {
  52                 debug("node=%d\n", node);
  53                 goto fallback;
  54         }
  55         ret = device_get_global_by_of_offset(node, &dev);
  56         if (ret) {
  57                 debug("device at node %s/%d not found: %d\n", bootdev, node,
  58                       ret);
  59                 goto fallback;
  60         }
  61         debug("Found device %s\n", dev->name);
  62         switch (device_get_uclass_id(dev)) {
  63         case UCLASS_SPI_FLASH:
  64                 return BOOT_DEVICE_SPI;
  65         case UCLASS_MMC:
  66                 return BOOT_DEVICE_MMC1;
  67         default:
  68                 debug("Booting from device uclass '%s' not supported\n",
  69                       dev_get_uclass_name(dev));
  70         }
  71
  72 fallback:
  73 #elif defined(CONFIG_TARGET_CHROMEBOOK_JERRY) || \
  74                 defined(CONFIG_TARGET_CHROMEBIT_MICKEY) || \
  75                 defined(CONFIG_TARGET_CHROMEBOOK_MINNIE)
  76         return BOOT_DEVICE_SPI;
  77 #endif
  78         return BOOT_DEVICE_MMC1;
  79 }
  80
  81 u32 spl_boot_mode(const u32 boot_device)
  82 {
  83         return MMCSD_MODE_RAW;
  84 }
  85
  86 #ifdef CONFIG_SPL_MMC_SUPPORT
  87 static int configure_emmc(struct udevice *pinctrl)
  88 {
  89 #if defined(CONFIG_TARGET_CHROMEBOOK_JERRY)
  90
  91         struct gpio_desc desc;
  92         int ret;
  93
  94         pinctrl_request_noflags(pinctrl, PERIPH_ID_EMMC);
  95
  96         /*
  97          * TODO(sjg@chromium.org): Pick this up from device tree or perhaps
  98          * use the EMMC_PWREN setting.
  99          */
 100         ret = dm_gpio_lookup_name("D9", &desc);
 101         if (ret) {
 102                 debug("gpio ret=%d\n", ret);
 103                 return ret;
 104         }
 105         ret = dm_gpio_request(&desc, "emmc_pwren");
 106         if (ret) {
 107                 debug("gpio_request ret=%d\n", ret);
 108                 return ret;
 109         }
 110         ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
 111         if (ret) {
 112                 debug("gpio dir ret=%d\n", ret);
 113                 return ret;
 114         }
 115         ret = dm_gpio_set_value(&desc, 1);
 116         if (ret) {
 117                 debug("gpio value ret=%d\n", ret);
 118                 return ret;
 119         }
 120 #endif
 121         return 0;
 122 }
 123 #endif
 124
 125 #if !defined(CONFIG_SPL_OF_PLATDATA)
 126 static int phycore_init(void)
 127 {
 128         struct udevice *pmic;
 129         int ret;
 130
 131         ret = uclass_first_device_err(UCLASS_PMIC, &pmic);
 132         if (ret)
 133                 return ret;
 134
 135 #if defined(CONFIG_SPL_POWER_SUPPORT)
 136         /* Increase USB input current to 2A */
 137         ret = rk818_spl_configure_usb_input_current(pmic, 2000);
 138         if (ret)
 139                 return ret;
 140
 141         /* Close charger when USB lower then 3.26V */
 142         ret = rk818_spl_configure_usb_chrg_shutdown(pmic, 3260000);
 143         if (ret)
 144                 return ret;
 145 #endif
 146
 147         return 0;
 148 }
 149 #endif
 150
 151 void board_init_f(ulong dummy)
 152 {
 153         struct udevice *pinctrl;
 154         struct udevice *dev;
 155         int ret;
 156
 157         /* Example code showing how to enable the debug UART on RK3288 */
 158 #include <asm/arch/grf_rk3288.h>
 159         /* Enable early UART on the RK3288 */
 160 #define GRF_BASE        0xff770000
 161         struct rk3288_grf * const grf = (void *)GRF_BASE;
 162
 163         rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT |
 164                      GPIO7C6_MASK << GPIO7C6_SHIFT,
 165                      GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT |
 166                      GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT);
 167         /*
 168          * Debug UART can be used from here if required:
 169          *
 170          * debug_uart_init();
 171          * printch('a');
 172          * printhex8(0x1234);
 173          * printascii("string");
 174          */
 175         debug_uart_init();
 176         debug("\nspl:debug uart enabled in %s\n", __func__);
 177         ret = spl_early_init();
 178         if (ret) {
 179                 debug("spl_early_init() failed: %d\n", ret);
 180                 hang();
 181         }
 182
 183         rockchip_timer_init();
 184         configure_l2ctlr();
 185
 186         ret = rockchip_get_clk(&dev);
 187         if (ret) {
 188                 debug("CLK init failed: %d\n", ret);
 189                 return;
 190         }
 191
 192         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
 193         if (ret) {
 194                 debug("Pinctrl init failed: %d\n", ret);
 195                 return;
 196         }
 197
 198 #if !defined(CONFIG_SPL_OF_PLATDATA)
 199         if (of_machine_is_compatible("phytec,rk3288-phycore-som")) {
 200                 ret = phycore_init();
 201                 if (ret) {
 202                         debug("Failed to set up phycore power settings: %d\n",
 203                               ret);
 204                         return;
 205                 }
 206         }
 207 #endif
 208
 209 #if !defined(CONFIG_SUPPORT_TPL)
 210         debug("\nspl:init dram\n");
 211         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 212         if (ret) {
 213                 debug("DRAM init failed: %d\n", ret);
 214                 return;
 215         }
 216 #endif
 217
 218 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
 219         back_to_bootrom();
 220 #endif
 221 }
 222
 223 static int setup_led(void)
 224 {
 225 #ifdef CONFIG_SPL_LED
 226         struct udevice *dev;
 227         char *led_name;
 228         int ret;
 229
 230         led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
 231         if (!led_name)
 232                 return 0;
 233         ret = led_get_by_label(led_name, &dev);
 234         if (ret) {
 235                 debug("%s: get=%d\n", __func__, ret);
 236                 return ret;
 237         }
 238         ret = led_set_on(dev, 1);
 239         if (ret)
 240                 return ret;
 241 #endif
 242
 243         return 0;
 244 }
 245
 246 void spl_board_init(void)
 247 {
 248         struct udevice *pinctrl;
 249         int ret;
 250
 251         ret = setup_led();
 252
 253         if (ret) {
 254                 debug("LED ret=%d\n", ret);
 255                 hang();
 256         }
 257
 258         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
 259         if (ret) {
 260                 debug("%s: Cannot find pinctrl device\n", __func__);
 261                 goto err;
 262         }
 263
 264 #ifdef CONFIG_SPL_MMC_SUPPORT
 265         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
 266         if (ret) {
 267                 debug("%s: Failed to set up SD card\n", __func__);
 268                 goto err;
 269         }
 270         ret = configure_emmc(pinctrl);
 271         if (ret) {
 272                 debug("%s: Failed to set up eMMC\n", __func__);
 273                 goto err;
 274         }
 275 #endif
 276
 277         /* Enable debug UART */
 278         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
 279         if (ret) {
 280                 debug("%s: Failed to set up console UART\n", __func__);
 281                 goto err;
 282         }
 283
 284         preloader_console_init();
 285 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
 286         back_to_bootrom();
 287 #endif
 288         return;
 289 err:
 290         printf("spl_board_init: Error %d\n", ret);
 291
 292         /* No way to report error here */
 293         hang();
 294 }
 295
 296 #ifdef CONFIG_SPL_OS_BOOT
 297
 298 #define PMU_BASE                0xff730000
 299 int dram_init_banksize(void)
 300 {
 301         struct rk3288_pmu *const pmu = (void *)PMU_BASE;
 302         size_t size = rockchip_sdram_size((phys_addr_t)&pmu->sys_reg[2]);
 303
 304         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 305         gd->bd->bi_dram[0].size = size;
 306
 307         return 0;
 308 }
 309 #endif