1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2020 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
9 #include <env_internal.h>
13 #include <asm/arch/boot.h>
14 #include <asm/arch/eth.h>
15 #include <asm/arch/sm.h>
16 #include <asm/global_data.h>
18 #include "khadas-mcu.h"
20 int mmc_get_env_dev(void)
22 switch (meson_get_boot_device()) {
23 case BOOT_DEVICE_EMMC:
28 /* boot device is not EMMC|SD */
34 * The VIM3 on-board MCU can mux the PCIe/USB3.0 shared differential
35 * lines using a FUSB340TMX USB 3.1 SuperSpeed Data Switch between
36 * an USB3.0 Type A connector and a M.2 Key M slot.
37 * The PHY driving these differential lines is shared between
38 * the USB3.0 controller and the PCIe Controller, thus only
39 * a single controller can use it.
41 int meson_ft_board_setup(void *blob, struct bd_info *bd)
43 struct udevice *bus, *dev;
44 int node, i2c_node, ret;
45 unsigned int i2c_addr;
49 node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "khadas,mcu");
51 printf("vim3: cannot find khadas,mcu node\n");
56 val = (u32 *)fdt_getprop(gd->fdt_blob, node, "reg", NULL);
58 printf("vim3: cannot find khadas,mcu node i2c addr\n");
61 i2c_addr = fdt32_to_cpu(*val);
64 i2c_node = fdt_parent_offset(gd->fdt_blob, node);
66 printf("vim3: cannot find khadas,mcu i2c node\n");
70 ret = uclass_get_device_by_of_offset(UCLASS_I2C, i2c_node, &bus);
72 printf("vim3: cannot find i2c bus (%d)\n", ret);
76 ret = i2c_get_chip(bus, i2c_addr, 1, &dev);
78 printf("vim3: cannot find i2c chip (%d)\n", ret);
82 /* Read USB_PCIE_SWITCH_REG */
83 ret = dm_i2c_reg_read(dev, KHADAS_MCU_USB_PCIE_SWITCH_REG);
85 printf("vim3: failed to read i2c reg (%d)\n", ret);
88 debug("MCU_USB_PCIE_SWITCH_REG: %d\n", ret);
91 * If in PCIe mode, alter DT
92 * 0:Enable USB3.0,Disable PCIE, 1:Disable USB3.0, Enable PCIE
95 static char data[32] __aligned(4);
100 node = fdt_node_offset_by_compatible(blob, -1, "amlogic,meson-g12a-usb-ctrl");
102 printf("vim3: cannot find amlogic,meson-g12a-usb-ctrl node\n");
106 /* Update PHY names (mandatory to disable USB3.0) */
107 len = strlcpy(data, "usb2-phy0", 32);
108 len += strlcpy(&data[len], "usb2-phy1", 32 - len);
109 ret = fdt_setprop(blob, node, "phy-names", data, len);
111 printf("vim3: failed to update usb phy names property (%d)\n", ret);
115 /* Update PHY list, by keeping the 2 first entries (optional) */
116 ptmp = fdt_getprop(blob, node, "phys", &len);
118 memcpy(data, ptmp, min_t(unsigned int, 2 * sizeof(u32), len));
120 ret = fdt_setprop(blob, node, "phys", data,
121 min_t(unsigned int, 2 * sizeof(u32), len));
123 printf("vim3: failed to update usb phys property (%d)\n", ret);
125 printf("vim3: cannot find usb node phys property\n");
128 node = fdt_node_offset_by_compatible(blob, -1, "amlogic,g12a-pcie");
130 printf("vim3: cannot find amlogic,g12a-pcie node\n");
135 len = strlcpy(data, "okay", 32);
136 ret = fdt_setprop(blob, node, "status", data, len);
138 printf("vim3: failed to enable pcie node (%d)\n", ret);
142 printf("vim3: successfully enabled PCIe\n");
148 #define EFUSE_MAC_OFFSET 0
149 #define EFUSE_MAC_SIZE 12
150 #define MAC_ADDR_LEN 6
152 int misc_init_r(void)
154 u8 mac_addr[MAC_ADDR_LEN];
155 char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
158 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
159 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
160 efuse_mac_addr, EFUSE_MAC_SIZE);
161 if (len != EFUSE_MAC_SIZE)
164 /* MAC is stored in ASCII format, 1bytes = 2characters */
165 for (int i = 0; i < 6; i++) {
166 tmp[0] = efuse_mac_addr[i * 2];
167 tmp[1] = efuse_mac_addr[i * 2 + 1];
169 mac_addr[i] = hextoul(tmp, NULL);
172 if (is_valid_ethaddr(mac_addr))
173 eth_env_set_enetaddr("ethaddr", mac_addr);
175 meson_generate_serial_ethaddr();
177 eth_env_get_enetaddr("ethaddr", mac_addr);