board/hisilicon/poplar/poplar.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2017 Linaro
   4  * Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
   5  */
   6
   7 #include <cpu_func.h>
   8 #include <dm.h>
   9 #include <common.h>
  10 #include <init.h>
  11 #include <asm/io.h>
  12 #include <dm/platform_data/serial_pl01x.h>
  13 #include <asm/arch/hi3798cv200.h>
  14 #include <asm/armv8/mmu.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 static struct mm_region poplar_mem_map[] = {
  19         {
  20                 .virt = 0x0UL,
  21                 .phys = 0x0UL,
  22                 .size = 0x80000000UL,
  23                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  24                          PTE_BLOCK_INNER_SHARE
  25         }, {
  26                 .virt = 0x80000000UL,
  27                 .phys = 0x80000000UL,
  28                 .size = 0x80000000UL,
  29                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  30                          PTE_BLOCK_NON_SHARE |
  31                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  32         }, {
  33                 0,
  34         }
  35 };
  36
  37 struct mm_region *mem_map = poplar_mem_map;
  38
  39 #if !CONFIG_IS_ENABLED(OF_CONTROL)
  40 static const struct pl01x_serial_platdata serial_platdata = {
  41         .base = REG_BASE_UART0,
  42         .type = TYPE_PL010,
  43         .clock = 75000000,
  44 };
  45
  46 U_BOOT_DEVICE(poplar_serial) = {
  47         .name = "serial_pl01x",
  48         .platdata = &serial_platdata,
  49 };
  50 #endif
  51
  52 int checkboard(void)
  53 {
  54         puts("BOARD: Hisilicon HI3798cv200 Poplar\n");
  55
  56         return 0;
  57 }
  58
  59 void reset_cpu(ulong addr)
  60 {
  61         psci_system_reset();
  62 }
  63
  64 int dram_init(void)
  65 {
  66         gd->ram_size = get_ram_size(NULL, 0x80000000);
  67
  68         return 0;
  69 }
  70
  71 /*
  72  * Some linux kernel versions don't use memory before its load address, so to
  73  * be generic we just pretend it isn't there.  In previous uboot versions we
  74  * carved the space used by BL31 (runs in DDR on this platfomr) so the PSCI code
  75  * could persist in memory and be left alone by the kernel.
  76  *
  77  * That led to a problem when mapping memory in older kernels.  That PSCI code
  78  * now lies in memory below the kernel load offset; it therefore won't be
  79  * touched by the kernel, and by not specially reserving it we avoid the mapping
  80  * problem as well.
  81  *
  82  */
  83 #define KERNEL_TEXT_OFFSET      0x00080000
  84
  85 int dram_init_banksize(void)
  86 {
  87         gd->bd->bi_dram[0].start = KERNEL_TEXT_OFFSET;
  88         gd->bd->bi_dram[0].size = gd->ram_size - gd->bd->bi_dram[0].start;
  89
  90         return 0;
  91 }
  92
  93 static void usb2_phy_config(void)
  94 {
  95         const u32 config[] = {
  96                 /* close EOP pre-emphasis. open data pre-emphasis */
  97                 0xa1001c,
  98                 /* Rcomp = 150mW, increase DC level */
  99                 0xa00607,
 100                 /* keep Rcomp working */
 101                 0xa10700,
 102                 /* Icomp = 212mW, increase current drive */
 103                 0xa00aab,
 104                 /* EMI fix: rx_active not stay 1 when error packets received */
 105                 0xa11140,
 106                 /* Comp mode select */
 107                 0xa11041,
 108                 /* adjust eye diagram */
 109                 0xa0098c,
 110                 /* adjust eye diagram */
 111                 0xa10a0a,
 112         };
 113         int i;
 114
 115         for (i = 0; i < ARRAY_SIZE(config); i++) {
 116                 writel(config[i], PERI_CTRL_USB0);
 117                 clrsetbits_le32(PERI_CTRL_USB0, BIT(21), BIT(20) | BIT(22));
 118                 udelay(20);
 119         }
 120 }
 121
 122 static void usb2_phy_init(void)
 123 {
 124         /* reset usb2 controller bus/utmi/roothub */
 125         setbits_le32(PERI_CRG46, USB2_BUS_SRST_REQ | USB2_UTMI0_SRST_REQ |
 126                         USB2_HST_PHY_SYST_REQ | USB2_OTG_PHY_SYST_REQ);
 127         udelay(200);
 128
 129         /* reset usb2 phy por/utmi */
 130         setbits_le32(PERI_CRG47, USB2_PHY01_SRST_REQ | USB2_PHY01_SRST_TREQ1);
 131         udelay(200);
 132
 133         /* open usb2 ref clk */
 134         setbits_le32(PERI_CRG47, USB2_PHY01_REF_CKEN);
 135         udelay(300);
 136
 137         /* cancel usb2 power on reset */
 138         clrbits_le32(PERI_CRG47, USB2_PHY01_SRST_REQ);
 139         udelay(500);
 140
 141         usb2_phy_config();
 142
 143         /* cancel usb2 port reset, wait comp circuit stable */
 144         clrbits_le32(PERI_CRG47, USB2_PHY01_SRST_TREQ1);
 145         mdelay(10);
 146
 147         /* open usb2 controller clk */
 148         setbits_le32(PERI_CRG46, USB2_BUS_CKEN | USB2_OHCI48M_CKEN |
 149                         USB2_OHCI12M_CKEN | USB2_OTG_UTMI_CKEN |
 150                         USB2_HST_PHY_CKEN | USB2_UTMI0_CKEN);
 151         udelay(200);
 152
 153         /* cancel usb2 control reset */
 154         clrbits_le32(PERI_CRG46, USB2_BUS_SRST_REQ | USB2_UTMI0_SRST_REQ |
 155                         USB2_HST_PHY_SYST_REQ | USB2_OTG_PHY_SYST_REQ);
 156         udelay(200);
 157 }
 158
 159 #if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
 160 #include <env.h>
 161 #include <usb.h>
 162 #include <usb/dwc2_udc.h>
 163 #include <g_dnl.h>
 164
 165 static struct dwc2_plat_otg_data poplar_otg_data = {
 166         .regs_otg = HIOTG_BASE_ADDR
 167 };
 168
 169 static void set_usb_to_device(void)
 170 {
 171         setbits_le32(PERI_CTRL_USB3, USB2_2P_CHIPID);
 172 }
 173
 174 int board_usb_init(int index, enum usb_init_type init)
 175 {
 176         set_usb_to_device();
 177         return dwc2_udc_probe(&poplar_otg_data);
 178 }
 179
 180 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 181 {
 182         if (!env_get("serial#"))
 183                 g_dnl_set_serialnumber("0123456789POPLAR");
 184         return 0;
 185 }
 186 #endif
 187
 188 int board_init(void)
 189 {
 190         usb2_phy_init();
 191
 192         return 0;
 193 }
 194