arch/arm/mach-meson/board-gx.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com>
   4  * (C) Copyright 2018 Neil Armstrong <narmstrong@baylibre.com>
   5  */
   6
   7 #include <common.h>
   8 #include <asm/arch/boot.h>
   9 #include <asm/arch/eth.h>
  10 #include <asm/arch/gx.h>
  11 #include <asm/arch/mem.h>
  12 #include <asm/arch/meson-vpu.h>
  13 #include <asm/io.h>
  14 #include <asm/armv8/mmu.h>
  15 #include <linux/sizes.h>
  16 #include <phy.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 int meson_get_boot_device(void)
  21 {
  22         return readl(GX_AO_SEC_GP_CFG0) & GX_AO_BOOT_DEVICE;
  23 }
  24
  25 /* Configure the reserved memory zones exported by the secure registers
  26  * into EFI and DTB reserved memory entries.
  27  */
  28 void meson_init_reserved_memory(void *fdt)
  29 {
  30         u64 bl31_size, bl31_start;
  31         u64 bl32_size, bl32_start;
  32         u32 reg;
  33
  34         /*
  35          * Get ARM Trusted Firmware reserved memory zones in :
  36          * - AO_SEC_GP_CFG3: bl32 & bl31 size in KiB, can be 0
  37          * - AO_SEC_GP_CFG5: bl31 physical start address, can be NULL
  38          * - AO_SEC_GP_CFG4: bl32 physical start address, can be NULL
  39          */
  40         reg = readl(GX_AO_SEC_GP_CFG3);
  41
  42         bl31_size = ((reg & GX_AO_BL31_RSVMEM_SIZE_MASK)
  43                         >> GX_AO_BL31_RSVMEM_SIZE_SHIFT) * SZ_1K;
  44         bl32_size = (reg & GX_AO_BL32_RSVMEM_SIZE_MASK) * SZ_1K;
  45
  46         bl31_start = readl(GX_AO_SEC_GP_CFG5);
  47         bl32_start = readl(GX_AO_SEC_GP_CFG4);
  48
  49         /*
  50          * Early Meson GX Firmware revisions did not provide the reserved
  51          * memory zones in the registers, keep fixed memory zone handling.
  52          */
  53         if (IS_ENABLED(CONFIG_MESON_GX) &&
  54             !reg && !bl31_start && !bl32_start) {
  55                 bl31_start = 0x10000000;
  56                 bl31_size = 0x200000;
  57         }
  58
  59         /* Add first 16MiB reserved zone */
  60         meson_board_add_reserved_memory(fdt, 0, GX_FIRMWARE_MEM_SIZE);
  61
  62         /* Add BL31 reserved zone */
  63         if (bl31_start && bl31_size)
  64                 meson_board_add_reserved_memory(fdt, bl31_start, bl31_size);
  65
  66         /* Add BL32 reserved zone */
  67         if (bl32_start && bl32_size)
  68                 meson_board_add_reserved_memory(fdt, bl32_start, bl32_size);
  69
  70 #if defined(CONFIG_VIDEO_MESON)
  71         meson_vpu_rsv_fb(fdt);
  72 #endif
  73 }
  74
  75 phys_size_t get_effective_memsize(void)
  76 {
  77         /* Size is reported in MiB, convert it in bytes */
  78         return ((readl(GX_AO_SEC_GP_CFG0) & GX_AO_MEM_SIZE_MASK)
  79                         >> GX_AO_MEM_SIZE_SHIFT) * SZ_1M;
  80 }
  81
  82 static struct mm_region gx_mem_map[] = {
  83         {
  84                 .virt = 0x0UL,
  85                 .phys = 0x0UL,
  86                 .size = 0xc0000000UL,
  87                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  88                          PTE_BLOCK_INNER_SHARE
  89         }, {
  90                 .virt = 0xc0000000UL,
  91                 .phys = 0xc0000000UL,
  92                 .size = 0x30000000UL,
  93                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  94                          PTE_BLOCK_NON_SHARE |
  95                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  96         }, {
  97                 /* List terminator */
  98                 0,
  99         }
 100 };
 101
 102 struct mm_region *mem_map = gx_mem_map;
 103
 104 /* Configure the Ethernet MAC with the requested interface mode
 105  * with some optional flags.
 106  */
 107 void meson_eth_init(phy_interface_t mode, unsigned int flags)
 108 {
 109         switch (mode) {
 110         case PHY_INTERFACE_MODE_RGMII:
 111         case PHY_INTERFACE_MODE_RGMII_ID:
 112         case PHY_INTERFACE_MODE_RGMII_RXID:
 113         case PHY_INTERFACE_MODE_RGMII_TXID:
 114                 /* Set RGMII mode */
 115                 setbits_le32(GX_ETH_REG_0, GX_ETH_REG_0_PHY_INTF |
 116                              GX_ETH_REG_0_TX_PHASE(1) |
 117                              GX_ETH_REG_0_TX_RATIO(4) |
 118                              GX_ETH_REG_0_PHY_CLK_EN |
 119                              GX_ETH_REG_0_CLK_EN);
 120
 121                 /* Reset to external PHY */
 122                 if(!IS_ENABLED(CONFIG_MESON_GXBB))
 123                         writel(0x2009087f, GX_ETH_REG_3);
 124
 125                 break;
 126
 127         case PHY_INTERFACE_MODE_RMII:
 128                 /* Set RMII mode */
 129                 out_le32(GX_ETH_REG_0, GX_ETH_REG_0_INVERT_RMII_CLK |
 130                                          GX_ETH_REG_0_CLK_EN);
 131
 132                 /* Use GXL RMII Internal PHY (also on GXM) */
 133                 if (!IS_ENABLED(CONFIG_MESON_GXBB)) {
 134                         if ((flags & MESON_USE_INTERNAL_RMII_PHY)) {
 135                                 writel(0x10110181, GX_ETH_REG_2);
 136                                 writel(0xe40908ff, GX_ETH_REG_3);
 137                         } else
 138                                 writel(0x2009087f, GX_ETH_REG_3);
 139                 }
 140
 141                 break;
 142
 143         default:
 144                 printf("Invalid Ethernet interface mode\n");
 145                 return;
 146         }
 147
 148         /* Enable power gate */
 149         clrbits_le32(GX_MEM_PD_REG_0, GX_MEM_PD_REG_0_ETH_MASK);
 150 }