arch/arm/mach-rockchip/rk3399-board-spl.c

   1 /*
   2  * (C) Copyright 2016 Rockchip Electronics Co., Ltd
   3  * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/arch/bootrom.h>
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/grf_rk3399.h>
  12 #include <asm/arch/hardware.h>
  13 #include <asm/arch/periph.h>
  14 #include <asm/io.h>
  15 #include <debug_uart.h>
  16 #include <dm.h>
  17 #include <dm/pinctrl.h>
  18 #include <ram.h>
  19 #include <spl.h>
  20 #include <syscon.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 void board_return_to_bootrom(void)
  25 {
  26         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
  27 }
  28
  29 static const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
  30         [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
  31         [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000",
  32         [BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000",
  33 };
  34
  35 const char *board_spl_was_booted_from(void)
  36 {
  37         u32  bootdevice_brom_id = readl(RK3399_BROM_BOOTSOURCE_ID_ADDR);
  38         const char *bootdevice_ofpath = NULL;
  39
  40         if (bootdevice_brom_id < ARRAY_SIZE(boot_devices))
  41                 bootdevice_ofpath = boot_devices[bootdevice_brom_id];
  42
  43         if (bootdevice_ofpath)
  44                 debug("%s: brom_bootdevice_id %x maps to '%s'\n",
  45                       __func__, bootdevice_brom_id, bootdevice_ofpath);
  46         else
  47                 debug("%s: failed to resolve brom_bootdevice_id %x\n",
  48                       __func__, bootdevice_brom_id);
  49
  50         return bootdevice_ofpath;
  51 }
  52
  53 u32 spl_boot_device(void)
  54 {
  55         u32 boot_device = BOOT_DEVICE_MMC1;
  56
  57         if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM))
  58                 return BOOT_DEVICE_BOOTROM;
  59
  60         return boot_device;
  61 }
  62
  63 #define TIMER_CHN10_BASE        0xff8680a0
  64 #define TIMER_END_COUNT_L       0x00
  65 #define TIMER_END_COUNT_H       0x04
  66 #define TIMER_INIT_COUNT_L      0x10
  67 #define TIMER_INIT_COUNT_H      0x14
  68 #define TIMER_CONTROL_REG       0x1c
  69
  70 #define TIMER_EN        0x1
  71 #define TIMER_FMODE     (0 << 1)
  72 #define TIMER_RMODE     (1 << 1)
  73
  74 void secure_timer_init(void)
  75 {
  76         writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_L);
  77         writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_H);
  78         writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_L);
  79         writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_H);
  80         writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG);
  81 }
  82
  83 void board_debug_uart_init(void)
  84 {
  85 #define GRF_BASE        0xff770000
  86         struct rk3399_grf_regs * const grf = (void *)GRF_BASE;
  87
  88 #if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
  89         /* Enable early UART0 on the RK3399 */
  90         rk_clrsetreg(&grf->gpio2c_iomux,
  91                      GRF_GPIO2C0_SEL_MASK,
  92                      GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT);
  93         rk_clrsetreg(&grf->gpio2c_iomux,
  94                      GRF_GPIO2C1_SEL_MASK,
  95                      GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT);
  96 #else
  97         /* Enable early UART2 channel C on the RK3399 */
  98         rk_clrsetreg(&grf->gpio4c_iomux,
  99                      GRF_GPIO4C3_SEL_MASK,
 100                      GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
 101         rk_clrsetreg(&grf->gpio4c_iomux,
 102                      GRF_GPIO4C4_SEL_MASK,
 103                      GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
 104         /* Set channel C as UART2 input */
 105         rk_clrsetreg(&grf->soc_con7,
 106                      GRF_UART_DBG_SEL_MASK,
 107                      GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT);
 108 #endif
 109 }
 110
 111 void board_init_f(ulong dummy)
 112 {
 113         struct udevice *pinctrl;
 114         struct udevice *dev;
 115         struct rk3399_pmusgrf_regs *sgrf;
 116         struct rk3399_grf_regs *grf;
 117         int ret;
 118
 119 #define EARLY_UART
 120 #ifdef EARLY_UART
 121         /*
 122          * Debug UART can be used from here if required:
 123          *
 124          * debug_uart_init();
 125          * printch('a');
 126          * printhex8(0x1234);
 127          * printascii("string");
 128          */
 129         debug_uart_init();
 130         printascii("U-Boot SPL board init");
 131 #endif
 132
 133         ret = spl_early_init();
 134         if (ret) {
 135                 debug("spl_early_init() failed: %d\n", ret);
 136                 hang();
 137         }
 138
 139         /*
 140          * Disable DDR and SRAM security regions.
 141          *
 142          * As we are entered from the BootROM, the region from
 143          * 0x0 through 0xfffff (i.e. the first MB of memory) will
 144          * be protected. This will cause issues with the DW_MMC
 145          * driver, which tries to DMA from/to the stack (likely)
 146          * located in this range.
 147          */
 148         sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
 149         rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0);
 150         rk_clrreg(&sgrf->slv_secure_con4, 0x2000);
 151
 152         /*  eMMC clock generator: disable the clock multipilier */
 153         grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
 154         rk_clrreg(&grf->emmccore_con[11], 0x0ff);
 155
 156         secure_timer_init();
 157
 158         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
 159         if (ret) {
 160                 debug("Pinctrl init failed: %d\n", ret);
 161                 return;
 162         }
 163
 164         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 165         if (ret) {
 166                 debug("DRAM init failed: %d\n", ret);
 167                 return;
 168         }
 169 }
 170
 171 #ifdef CONFIG_SPL_LOAD_FIT
 172 int board_fit_config_name_match(const char *name)
 173 {
 174         /* Just empty function now - can't decide what to choose */
 175         debug("%s: %s\n", __func__, name);
 176
 177         return 0;
 178 }
 179 #endif