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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <dm.h>
#include <env_internal.h>
#include <init.h>
#include <net.h>
#include <asm/io.h>
#include <asm/arch/boot.h>
#include <asm/arch/eth.h>
#include <asm/arch/sm.h>
#include <i2c.h>
#include "khadas-mcu.h"
int mmc_get_env_dev(void)
{
if (meson_get_boot_device() == BOOT_DEVICE_EMMC)
return 2;
return 1;
}
/*
* The VIM3 on-board MCU can mux the PCIe/USB3.0 shared differential
* lines using a FUSB340TMX USB 3.1 SuperSpeed Data Switch between
* an USB3.0 Type A connector and a M.2 Key M slot.
* The PHY driving these differential lines is shared between
* the USB3.0 controller and the PCIe Controller, thus only
* a single controller can use it.
*/
int meson_ft_board_setup(void *blob, struct bd_info *bd)
{
struct udevice *bus, *dev;
int node, i2c_node, ret;
unsigned int i2c_addr;
u32 *val;
/* Find I2C device */
node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "khadas,mcu");
if (node < 0) {
printf("vim3: cannot find khadas,mcu node\n");
return 0;
}
/* Get addr */
val = (u32 *)fdt_getprop(gd->fdt_blob, node, "reg", NULL);
if (!val) {
printf("vim3: cannot find khadas,mcu node i2c addr\n");
return 0;
}
i2c_addr = fdt32_to_cpu(*val);
/* Get i2c device */
i2c_node = fdt_parent_offset(gd->fdt_blob, node);
if (node < 0) {
printf("vim3: cannot find khadas,mcu i2c node\n");
return 0;
}
ret = uclass_get_device_by_of_offset(UCLASS_I2C, i2c_node, &bus);
if (ret < 0) {
printf("vim3: cannot find i2c bus (%d)\n", ret);
return 0;
}
ret = i2c_get_chip(bus, i2c_addr, 1, &dev);
if (ret < 0) {
printf("vim3: cannot find i2c chip (%d)\n", ret);
return 0;
}
/* Read USB_PCIE_SWITCH_REG */
ret = dm_i2c_reg_read(dev, KHADAS_MCU_USB_PCIE_SWITCH_REG);
if (ret < 0) {
printf("vim3: failed to read i2c reg (%d)\n", ret);
return 0;
}
debug("MCU_USB_PCIE_SWITCH_REG: %d\n", ret);
/*
* If in PCIe mode, alter DT
* 0：Enable USB3.0，Disable PCIE, 1：Disable USB3.0, Enable PCIE
*/
if (ret > 0) {
static char data[32] __aligned(4);
const void *ptmp;
int len;
/* Find USB node */
node = fdt_node_offset_by_compatible(blob, -1, "amlogic,meson-g12a-usb-ctrl");
if (node < 0) {
printf("vim3: cannot find amlogic,meson-g12a-usb-ctrl node\n");
return 0;
}
/* Update PHY names (mandatory to disable USB3.0) */
len = strlcpy(data, "usb2-phy0", 32) + 1;
len += strlcpy(&data[len], "usb2-phy1", 32 - len) + 1;
ret = fdt_setprop(blob, node, "phy-names", data, len);
if (ret < 0) {
printf("vim3: failed to update usb phy names property (%d)\n", ret);
return 0;
}
/* Update PHY list, by keeping the 2 first entries (optional) */
ptmp = fdt_getprop(blob, node, "phys", &len);
if (ptmp) {
memcpy(data, ptmp, min_t(unsigned int, 2 * sizeof(u32), len));
ret = fdt_setprop(blob, node, "phys", data,
min_t(unsigned int, 2 * sizeof(u32), len));
if (ret < 0)
printf("vim3: failed to update usb phys property (%d)\n", ret);
} else
printf("vim3: cannot find usb node phys property\n");
/* Find PCIe node */
node = fdt_node_offset_by_compatible(blob, -1, "amlogic,g12a-pcie");
if (node < 0) {
printf("vim3: cannot find amlogic,g12a-pcie node\n");
return 0;
}
/* Enable PCIe */
len = strlcpy(data, "okay", 32);
ret = fdt_setprop(blob, node, "status", data, len);
if (ret < 0) {
printf("vim3: failed to enable pcie node (%d)\n", ret);
return 0;
}
printf("vim3: successfully enabled PCIe\n");
}
return 0;
}
#define EFUSE_MAC_OFFSET 0
#define EFUSE_MAC_SIZE 12
#define MAC_ADDR_LEN 6
int misc_init_r(void)
{
u8 mac_addr[MAC_ADDR_LEN];
char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
ssize_t len;
meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
efuse_mac_addr, EFUSE_MAC_SIZE);
if (len != EFUSE_MAC_SIZE)
return 0;
/* MAC is stored in ASCII format, 1bytes = 2characters */
for (int i = 0; i < 6; i++) {
tmp[0] = efuse_mac_addr[i * 2];
tmp[1] = efuse_mac_addr[i * 2 + 1];
tmp[2] = '\0';
mac_addr[i] = simple_strtoul(tmp, NULL, 16);
}
if (is_valid_ethaddr(mac_addr))
eth_env_set_enetaddr("ethaddr", mac_addr);
else
meson_generate_serial_ethaddr();
eth_env_get_enetaddr("ethaddr", mac_addr);
}
return 0;
}
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