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Rohan Garg04825382019-08-12 17:04:34 +02001/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * RK3399: Architecture common definitions
4 *
5 * Copyright (C) 2019 Collabora Inc - https://www.collabora.com/
6 * Rohan Garg <rohan.garg@collabora.com>
7 *
8 * Based on puma-rk3399.c:
9 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
10 */
11
12#include <common.h>
13#include <env.h>
14#include <dm.h>
Simon Glass4d72caa2020-05-10 11:40:01 -060015#include <hash.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060016#include <log.h>
Rohan Garg04825382019-08-12 17:04:34 +020017#include <dm/uclass-internal.h>
18#include <misc.h>
Simon Glass3db71102019-11-14 12:57:16 -070019#include <u-boot/crc.h>
Rohan Garg04825382019-08-12 17:04:34 +020020#include <u-boot/sha256.h>
21
22#include <asm/arch-rockchip/misc.h>
23
24int rockchip_setup_macaddr(void)
25{
Jonas Karlman628fb062023-02-22 22:44:40 +000026#if CONFIG_IS_ENABLED(HASH) && CONFIG_IS_ENABLED(SHA256)
Rohan Garg04825382019-08-12 17:04:34 +020027 int ret;
28 const char *cpuid = env_get("cpuid#");
29 u8 hash[SHA256_SUM_LEN];
30 int size = sizeof(hash);
31 u8 mac_addr[6];
32
33 /* Only generate a MAC address, if none is set in the environment */
34 if (env_get("ethaddr"))
Heiko Stuebnerd490fad2019-11-29 16:40:42 +010035 return 0;
Rohan Garg04825382019-08-12 17:04:34 +020036
37 if (!cpuid) {
38 debug("%s: could not retrieve 'cpuid#'\n", __func__);
39 return -1;
40 }
41
42 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
43 if (ret) {
44 debug("%s: failed to calculate SHA256\n", __func__);
45 return -1;
46 }
47
48 /* Copy 6 bytes of the hash to base the MAC address on */
49 memcpy(mac_addr, hash, 6);
50
51 /* Make this a valid MAC address and set it */
52 mac_addr[0] &= 0xfe; /* clear multicast bit */
53 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
54 eth_env_set_enetaddr("ethaddr", mac_addr);
Jonas Karlman628fb062023-02-22 22:44:40 +000055
56 /* Make a valid MAC address for ethernet1 */
57 mac_addr[5] ^= 0x01;
58 eth_env_set_enetaddr("eth1addr", mac_addr);
Rohan Garg04825382019-08-12 17:04:34 +020059#endif
60 return 0;
61}
62
63int rockchip_cpuid_from_efuse(const u32 cpuid_offset,
64 const u32 cpuid_length,
65 u8 *cpuid)
66{
Simon Glassce119a22023-02-05 17:54:59 -070067#if IS_ENABLED(CONFIG_ROCKCHIP_EFUSE) || IS_ENABLED(CONFIG_ROCKCHIP_OTP)
Rohan Garg04825382019-08-12 17:04:34 +020068 struct udevice *dev;
69 int ret;
70
71 /* retrieve the device */
Simon Glass3c9adeb2023-02-05 15:40:40 -070072#if IS_ENABLED(CONFIG_ROCKCHIP_EFUSE)
Rohan Garg04825382019-08-12 17:04:34 +020073 ret = uclass_get_device_by_driver(UCLASS_MISC,
Simon Glass65e25be2020-12-28 20:34:56 -070074 DM_DRIVER_GET(rockchip_efuse), &dev);
Simon Glassce119a22023-02-05 17:54:59 -070075#elif IS_ENABLED(CONFIG_ROCKCHIP_OTP)
Heiko Stuebnere61350a2019-09-25 20:21:21 +020076 ret = uclass_get_device_by_driver(UCLASS_MISC,
Simon Glass65e25be2020-12-28 20:34:56 -070077 DM_DRIVER_GET(rockchip_otp), &dev);
Heiko Stuebnere61350a2019-09-25 20:21:21 +020078#endif
Rohan Garg04825382019-08-12 17:04:34 +020079 if (ret) {
80 debug("%s: could not find efuse device\n", __func__);
81 return -1;
82 }
83
84 /* read the cpu_id range from the efuses */
Heiko Stuebner03f98b72019-09-25 20:40:56 +020085 ret = misc_read(dev, cpuid_offset, cpuid, cpuid_length);
John Keeping999680c2023-03-27 12:01:08 +010086 if (ret < 0) {
Rohan Garg04825382019-08-12 17:04:34 +020087 debug("%s: reading cpuid from the efuses failed\n",
88 __func__);
89 return -1;
90 }
91#endif
92 return 0;
93}
94
95int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length)
96{
97 u8 low[cpuid_length / 2], high[cpuid_length / 2];
98 char cpuid_str[cpuid_length * 2 + 1];
99 u64 serialno;
100 char serialno_str[17];
Heiko Stuebnerfd3a7ae2019-11-29 16:40:43 +0100101 const char *oldid;
Rohan Garg04825382019-08-12 17:04:34 +0200102 int i;
103
104 memset(cpuid_str, 0, sizeof(cpuid_str));
105 for (i = 0; i < 16; i++)
106 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
107
108 debug("cpuid: %s\n", cpuid_str);
109
110 /*
111 * Mix the cpuid bytes using the same rules as in
112 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
113 */
114 for (i = 0; i < 8; i++) {
115 low[i] = cpuid[1 + (i << 1)];
116 high[i] = cpuid[i << 1];
117 }
118
119 serialno = crc32_no_comp(0, low, 8);
120 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
121 snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
122
Heiko Stuebnerfd3a7ae2019-11-29 16:40:43 +0100123 oldid = env_get("cpuid#");
124 if (oldid && strcmp(oldid, cpuid_str) != 0)
125 printf("cpuid: value %s present in env does not match hardware %s\n",
126 oldid, cpuid_str);
127
Rohan Garg04825382019-08-12 17:04:34 +0200128 env_set("cpuid#", cpuid_str);
Heiko Stuebnerfd3a7ae2019-11-29 16:40:43 +0100129
130 /* Only generate serial# when none is set yet */
131 if (!env_get("serial#"))
132 env_set("serial#", serialno_str);
Rohan Garg04825382019-08-12 17:04:34 +0200133
134 return 0;
135}