132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* RK3399: Architecture common definitions
|
|
*
|
|
* Copyright (C) 2019 Collabora Inc - https://www.collabora.com/
|
|
* Rohan Garg <rohan.garg@collabora.com>
|
|
*
|
|
* Based on puma-rk3399.c:
|
|
* (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <env.h>
|
|
#include <dm.h>
|
|
#include <hash.h>
|
|
#include <log.h>
|
|
#include <dm/uclass-internal.h>
|
|
#include <misc.h>
|
|
#include <u-boot/crc.h>
|
|
#include <u-boot/sha256.h>
|
|
|
|
#include <asm/arch-rockchip/misc.h>
|
|
|
|
int rockchip_setup_macaddr(void)
|
|
{
|
|
#if CONFIG_IS_ENABLED(CMD_NET)
|
|
int ret;
|
|
const char *cpuid = env_get("cpuid#");
|
|
u8 hash[SHA256_SUM_LEN];
|
|
int size = sizeof(hash);
|
|
u8 mac_addr[6];
|
|
|
|
/* Only generate a MAC address, if none is set in the environment */
|
|
if (env_get("ethaddr"))
|
|
return 0;
|
|
|
|
if (!cpuid) {
|
|
debug("%s: could not retrieve 'cpuid#'\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
|
|
if (ret) {
|
|
debug("%s: failed to calculate SHA256\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* Copy 6 bytes of the hash to base the MAC address on */
|
|
memcpy(mac_addr, hash, 6);
|
|
|
|
/* Make this a valid MAC address and set it */
|
|
mac_addr[0] &= 0xfe; /* clear multicast bit */
|
|
mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
|
|
eth_env_set_enetaddr("ethaddr", mac_addr);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int rockchip_cpuid_from_efuse(const u32 cpuid_offset,
|
|
const u32 cpuid_length,
|
|
u8 *cpuid)
|
|
{
|
|
#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) || CONFIG_IS_ENABLED(ROCKCHIP_OTP)
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
/* retrieve the device */
|
|
#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(rockchip_efuse), &dev);
|
|
#elif CONFIG_IS_ENABLED(ROCKCHIP_OTP)
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(rockchip_otp), &dev);
|
|
#endif
|
|
if (ret) {
|
|
debug("%s: could not find efuse device\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* read the cpu_id range from the efuses */
|
|
ret = misc_read(dev, cpuid_offset, cpuid, cpuid_length);
|
|
if (ret) {
|
|
debug("%s: reading cpuid from the efuses failed\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length)
|
|
{
|
|
u8 low[cpuid_length / 2], high[cpuid_length / 2];
|
|
char cpuid_str[cpuid_length * 2 + 1];
|
|
u64 serialno;
|
|
char serialno_str[17];
|
|
const char *oldid;
|
|
int i;
|
|
|
|
memset(cpuid_str, 0, sizeof(cpuid_str));
|
|
for (i = 0; i < 16; i++)
|
|
sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
|
|
|
|
debug("cpuid: %s\n", cpuid_str);
|
|
|
|
/*
|
|
* Mix the cpuid bytes using the same rules as in
|
|
* ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
|
|
*/
|
|
for (i = 0; i < 8; i++) {
|
|
low[i] = cpuid[1 + (i << 1)];
|
|
high[i] = cpuid[i << 1];
|
|
}
|
|
|
|
serialno = crc32_no_comp(0, low, 8);
|
|
serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
|
|
snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
|
|
|
|
oldid = env_get("cpuid#");
|
|
if (oldid && strcmp(oldid, cpuid_str) != 0)
|
|
printf("cpuid: value %s present in env does not match hardware %s\n",
|
|
oldid, cpuid_str);
|
|
|
|
env_set("cpuid#", cpuid_str);
|
|
|
|
/* Only generate serial# when none is set yet */
|
|
if (!env_get("serial#"))
|
|
env_set("serial#", serialno_str);
|
|
|
|
return 0;
|
|
}
|