1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2020-2021 Toradex
4 */
5
6 #include <common.h>
7 #include <init.h>
8 #include <asm/arch/clock.h>
9 #include <asm/arch/sys_proto.h>
10 #include <asm/global_data.h>
11 #include <asm/io.h>
12 #include <hang.h>
13 #include <i2c.h>
14 #include <micrel.h>
15 #include <miiphy.h>
16 #include <netdev.h>
17
18 #include "../common/tdx-cfg-block.h"
19
20 DECLARE_GLOBAL_DATA_PTR;
21
22 #define I2C_PMIC 0
23
24 enum pcb_rev_t {
25 PCB_VERSION_1_0,
26 PCB_VERSION_1_1
27 };
28
29 #if IS_ENABLED(CONFIG_FEC_MXC)
setup_fec(void)30 static int setup_fec(void)
31 {
32 struct iomuxc_gpr_base_regs *gpr =
33 (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
34
35 /* Use 125M anatop REF_CLK1 for ENET1, not from external */
36 clrsetbits_le32(&gpr->gpr[1], 0x2000, 0);
37
38 return 0;
39 }
40 #endif
41
board_init(void)42 int board_init(void)
43 {
44 if (IS_ENABLED(CONFIG_FEC_MXC))
45 setup_fec();
46
47 return 0;
48 }
49
board_mmc_get_env_dev(int devno)50 int board_mmc_get_env_dev(int devno)
51 {
52 return devno;
53 }
54
get_pcb_revision(void)55 static enum pcb_rev_t get_pcb_revision(void)
56 {
57 struct udevice *bus;
58 struct udevice *i2c_dev = NULL;
59 int ret;
60 u8 is_bd71837 = 0;
61
62 ret = uclass_get_device_by_seq(UCLASS_I2C, I2C_PMIC, &bus);
63 if (!ret)
64 ret = dm_i2c_probe(bus, 0x4b, 0, &i2c_dev);
65 if (!ret)
66 ret = dm_i2c_read(i2c_dev, 0x0, &is_bd71837, 1);
67
68 /* BD71837_REV, High Nibble is major version, fix 1010 */
69 is_bd71837 = !ret && ((is_bd71837 & 0xf0) == 0xa0);
70 return is_bd71837 ? PCB_VERSION_1_0 : PCB_VERSION_1_1;
71 }
72
select_dt_from_module_version(void)73 static void select_dt_from_module_version(void)
74 {
75 char variant[32];
76 char *env_variant = env_get("variant");
77 int is_wifi = 0;
78
79 if (IS_ENABLED(CONFIG_TDX_CFG_BLOCK)) {
80 /*
81 * If we have a valid config block and it says we are a
82 * module with Wi-Fi/Bluetooth make sure we use the -wifi
83 * device tree.
84 */
85 is_wifi = (tdx_hw_tag.prodid == VERDIN_IMX8MMQ_WIFI_BT_IT) ||
86 (tdx_hw_tag.prodid == VERDIN_IMX8MMDL_WIFI_BT_IT);
87 }
88
89 switch (get_pcb_revision()) {
90 case PCB_VERSION_1_0:
91 printf("Detected a V1.0 module which is no longer supported in this BSP version\n");
92 hang();
93 default:
94 if (is_wifi)
95 strlcpy(&variant[0], "wifi", sizeof(variant));
96 else
97 strlcpy(&variant[0], "nonwifi", sizeof(variant));
98 break;
99 }
100
101 if (strcmp(variant, env_variant)) {
102 printf("Setting variant to %s\n", variant);
103 env_set("variant", variant);
104
105 if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE))
106 env_save();
107 }
108 }
109
board_late_init(void)110 int board_late_init(void)
111 {
112 select_dt_from_module_version();
113
114 return 0;
115 }
116
board_phys_sdram_size(phys_size_t * size)117 int board_phys_sdram_size(phys_size_t *size)
118 {
119 if (!size)
120 return -EINVAL;
121
122 *size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
123
124 return 0;
125 }
126
127 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
ft_board_setup(void * blob,struct bd_info * bd)128 int ft_board_setup(void *blob, struct bd_info *bd)
129 {
130 return 0;
131 }
132 #endif
133