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