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