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// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright (C) 2024 Toradex */
#include <init.h>
#include <asm/global_data.h>
#include <asm-generic/gpio.h>
#include <linux/errno.h>
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
int board_init(void)
{
return 0;
}
int board_phys_sdram_size(phys_size_t *size)
{
if (!size)
return -EINVAL;
*size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE + PHYS_SDRAM_2_SIZE);
return 0;
}
#if IS_ENABLED(CONFIG_OF_LIBFDT) && IS_ENABLED(CONFIG_OF_BOARD_SETUP)
static bool board_has_wifi(void)
{
struct gpio_desc *desc;
if (!gpio_hog_lookup_name("BT_UART_RXD_GPIO", &desc))
return !!dm_gpio_get_value(desc);
return true;
}
/*
* Module variants with a Wi-Fi/Bluetooth module use UART3 for Bluetooth,
* those without use UART3 as the SMARC SER3 UART.
* Test for a Wi-Fi module and if none found reassign UART3 interface to
* the SMARC SER3 pins.
*/
static void ft_board_assign_uart(void *blob)
{
const char *uart_path = "/soc@0/bus@30800000/spba-bus@30800000/serial@30880000";
const char *pinctrl_path = "/soc@0/bus@30000000/pinctrl@30330000/uart3grp";
int pinctrl_offset;
int uart_offset;
int bt_offset;
u32 phandle;
if (board_has_wifi())
return;
uart_offset = fdt_path_offset(blob, uart_path);
if (uart_offset < 0)
return;
fdt_delprop(blob, uart_offset, "uart-has-rtscts");
bt_offset = fdt_subnode_offset(blob, uart_offset, "bluetooth");
if (bt_offset < 0)
return;
fdt_del_node(blob, bt_offset);
pinctrl_offset = fdt_path_offset(blob, pinctrl_path);
if (pinctrl_offset < 0)
return;
phandle = fdt_get_phandle(blob, pinctrl_offset);
if (phandle < 0)
return;
fdt_setprop_u32(blob, uart_offset, "pinctrl-0", phandle);
}
int ft_board_setup(void *blob, struct bd_info *bd)
{
ft_board_assign_uart(blob);
return ft_common_board_setup(blob, bd);
}
#endif
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