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 u32 spl_boot_mode(const u32 boot_device)
  64 {
  65         return MMCSD_MODE_RAW;
  66 }
  67
  68 #define TIMER_CHN10_BASE        0xff8680a0
  69 #define TIMER_END_COUNT_L       0x00
  70 #define TIMER_END_COUNT_H       0x04
  71 #define TIMER_INIT_COUNT_L      0x10
  72 #define TIMER_INIT_COUNT_H      0x14
  73 #define TIMER_CONTROL_REG       0x1c
  74
  75 #define TIMER_EN        0x1
  76 #define TIMER_FMODE     (0 << 1)
  77 #define TIMER_RMODE     (1 << 1)
  78
  79 void secure_timer_init(void)
  80 {
  81         writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_L);
  82         writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_H);
  83         writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_L);
  84         writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_H);
  85         writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG);
  86 }
  87
  88 void board_debug_uart_init(void)
  89 {
  90 #define GRF_BASE        0xff770000
  91         struct rk3399_grf_regs * const grf = (void *)GRF_BASE;
  92
  93 #if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
  94         /* Enable early UART0 on the RK3399 */
  95         rk_clrsetreg(&grf->gpio2c_iomux,
  96                      GRF_GPIO2C0_SEL_MASK,
  97                      GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT);
  98         rk_clrsetreg(&grf->gpio2c_iomux,
  99                      GRF_GPIO2C1_SEL_MASK,
 100                      GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT);
 101 #else
 102         /* Enable early UART2 channel C on the RK3399 */
 103         rk_clrsetreg(&grf->gpio4c_iomux,
 104                      GRF_GPIO4C3_SEL_MASK,
 105                      GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
 106         rk_clrsetreg(&grf->gpio4c_iomux,
 107                      GRF_GPIO4C4_SEL_MASK,
 108                      GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
 109         /* Set channel C as UART2 input */
 110         rk_clrsetreg(&grf->soc_con7,
 111                      GRF_UART_DBG_SEL_MASK,
 112                      GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT);
 113 #endif
 114 }
 115
 116 void board_init_f(ulong dummy)
 117 {
 118         struct udevice *pinctrl;
 119         struct udevice *dev;
 120         struct rk3399_pmusgrf_regs *sgrf;
 121         struct rk3399_grf_regs *grf;
 122         int ret;
 123
 124 #define EARLY_UART
 125 #ifdef EARLY_UART
 126         /*
 127          * Debug UART can be used from here if required:
 128          *
 129          * debug_uart_init();
 130          * printch('a');
 131          * printhex8(0x1234);
 132          * printascii("string");
 133          */
 134         debug_uart_init();
 135         printascii("U-Boot SPL board init");
 136 #endif
 137
 138         ret = spl_early_init();
 139         if (ret) {
 140                 debug("spl_early_init() failed: %d\n", ret);
 141                 hang();
 142         }
 143
 144         /*
 145          * Disable DDR and SRAM security regions.
 146          *
 147          * As we are entered from the BootROM, the region from
 148          * 0x0 through 0xfffff (i.e. the first MB of memory) will
 149          * be protected. This will cause issues with the DW_MMC
 150          * driver, which tries to DMA from/to the stack (likely)
 151          * located in this range.
 152          */
 153         sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
 154         rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0);
 155         rk_clrreg(&sgrf->slv_secure_con4, 0x2000);
 156
 157         /*  eMMC clock generator: disable the clock multipilier */
 158         grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
 159         rk_clrreg(&grf->emmccore_con[11], 0x0ff);
 160
 161         secure_timer_init();
 162
 163         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
 164         if (ret) {
 165                 debug("Pinctrl init failed: %d\n", ret);
 166                 return;
 167         }
 168
 169         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 170         if (ret) {
 171                 debug("DRAM init failed: %d\n", ret);
 172                 return;
 173         }
 174 }
 175
 176 #ifdef CONFIG_SPL_LOAD_FIT
 177 int board_fit_config_name_match(const char *name)
 178 {
 179         /* Just empty function now - can't decide what to choose */
 180         debug("%s: %s\n", __func__, name);
 181
 182         return 0;
 183 }
 184 #endif