1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Microchip
4 * Wenyou Yang <wenyou.yang@microchip.com>
10 #include <dm/device-internal.h>
12 #define AT91_PDA_EEPROM_ID_OFFSET 15
13 #define AT91_PDA_EEPROM_ID_LENGTH 5
14 #define AT91_PDA_EEPROM_DEFAULT_BUS 0
16 char *get_cpu_name(void);
23 void at91_pda_detect(void)
25 struct udevice *bus, *dev;
26 u8 buf[AT91_PDA_EEPROM_ID_LENGTH + 1] = {0};
30 ret = w1_get_bus(AT91_PDA_EEPROM_DEFAULT_BUS, &bus);
34 for (device_find_first_child(bus, &dev);
36 device_find_next_child(&dev)) {
37 ret = device_probe(dev);
41 ret = w1_eeprom_read_buf(dev, AT91_PDA_EEPROM_ID_OFFSET,
42 (u8 *)buf, AT91_PDA_EEPROM_ID_LENGTH);
48 pda = simple_strtoul((const char *)buf, NULL, 10);
53 printf("PDA TM7000B detected\n");
55 printf("PDA TM7000 detected\n");
58 printf("PDA TM4300 detected\n");
61 printf("PDA TM5000 detected\n");
66 env_set("pda", (const char *)buf);
69 void at91_pda_detect(void)
74 void at91_prepare_cpu_var(void)
76 env_set("cpu", get_cpu_name());