arch/arm/mach-rockchip/rk322x-board.c

   1 /*
   2  * (C) Copyright 2017 Rockchip Electronics Co., Ltd.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <clk.h>
   8 #include <dm.h>
   9 #include <ram.h>
  10 #include <syscon.h>
  11 #include <asm/io.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/periph.h>
  14 #include <asm/arch/grf_rk322x.h>
  15 #include <asm/arch/boot_mode.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 #define GRF_BASE        0x11000000
  20
  21 static void setup_boot_mode(void)
  22 {
  23         struct rk322x_grf *const grf = (void *)GRF_BASE;
  24         int boot_mode = readl(&grf->os_reg[4]);
  25
  26         debug("boot mode %x.\n", boot_mode);
  27
  28         /* Clear boot mode */
  29         writel(BOOT_NORMAL, &grf->os_reg[4]);
  30
  31         switch (boot_mode) {
  32         case BOOT_FASTBOOT:
  33                 printf("enter fastboot!\n");
  34                 env_set("preboot", "setenv preboot; fastboot usb0");
  35                 break;
  36         case BOOT_UMS:
  37                 printf("enter UMS!\n");
  38                 env_set("preboot", "setenv preboot; ums mmc 0");
  39                 break;
  40         }
  41 }
  42
  43 __weak int rk_board_late_init(void)
  44 {
  45         return 0;
  46 }
  47
  48 int board_late_init(void)
  49 {
  50         setup_boot_mode();
  51
  52         return rk_board_late_init();
  53 }
  54
  55 int board_init(void)
  56 {
  57 #include <asm/arch/grf_rk322x.h>
  58         /* Enable early UART2 channel 1 on the RK322x */
  59 #define GRF_BASE        0x11000000
  60         struct rk322x_grf * const grf = (void *)GRF_BASE;
  61
  62         rk_clrsetreg(&grf->gpio1b_iomux,
  63                      GPIO1B1_MASK | GPIO1B2_MASK,
  64                      GPIO1B2_UART21_SIN << GPIO1B2_SHIFT |
  65                      GPIO1B1_UART21_SOUT << GPIO1B1_SHIFT);
  66         /* Set channel C as UART2 input */
  67         rk_clrsetreg(&grf->con_iomux,
  68                      CON_IOMUX_UART2SEL_MASK,
  69                      CON_IOMUX_UART2SEL_21 << CON_IOMUX_UART2SEL_SHIFT);
  70
  71         return 0;
  72 }
  73
  74 int dram_init_banksize(void)
  75 {
  76         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
  77         gd->bd->bi_dram[0].size = 0x8400000;
  78         /* Reserve 0x200000 for OPTEE */
  79         gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE
  80                                 + gd->bd->bi_dram[0].size + 0x200000;
  81         gd->bd->bi_dram[1].size = gd->bd->bi_dram[0].start
  82                                 + gd->ram_size - gd->bd->bi_dram[1].start;
  83
  84         return 0;
  85 }
  86
  87 #ifndef CONFIG_SYS_DCACHE_OFF
  88 void enable_caches(void)
  89 {
  90         /* Enable D-cache. I-cache is already enabled in start.S */
  91         dcache_enable();
  92 }
  93 #endif
  94
  95 #if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
  96 #include <usb.h>
  97 #include <usb/dwc2_udc.h>
  98
  99 static struct dwc2_plat_otg_data rk322x_otg_data = {
 100         .rx_fifo_sz     = 512,
 101         .np_tx_fifo_sz  = 16,
 102         .tx_fifo_sz     = 128,
 103 };
 104
 105 int board_usb_init(int index, enum usb_init_type init)
 106 {
 107         int node;
 108         const char *mode;
 109         bool matched = false;
 110         const void *blob = gd->fdt_blob;
 111
 112         /* find the usb_otg node */
 113         node = fdt_node_offset_by_compatible(blob, -1,
 114                                         "rockchip,rk3288-usb");
 115
 116         while (node > 0) {
 117                 mode = fdt_getprop(blob, node, "dr_mode", NULL);
 118                 if (mode && strcmp(mode, "otg") == 0) {
 119                         matched = true;
 120                         break;
 121                 }
 122
 123                 node = fdt_node_offset_by_compatible(blob, node,
 124                                         "rockchip,rk3288-usb");
 125         }
 126         if (!matched) {
 127                 debug("Not found usb_otg device\n");
 128                 return -ENODEV;
 129         }
 130         rk322x_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
 131
 132         return dwc2_udc_probe(&rk322x_otg_data);
 133 }
 134
 135 int board_usb_cleanup(int index, enum usb_init_type init)
 136 {
 137         return 0;
 138 }
 139 #endif
 140
 141 #if defined(CONFIG_USB_FUNCTION_FASTBOOT)
 142 int fb_set_reboot_flag(void)
 143 {
 144         struct rk322x_grf *grf;
 145
 146         printf("Setting reboot to fastboot flag ...\n");
 147         grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
 148         /* Set boot mode to fastboot */
 149         writel(BOOT_FASTBOOT, &grf->os_reg[0]);
 150
 151         return 0;
 152 }
 153 #endif