mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-21 20:34:38 +00:00
8eb535e3b0
Add a function setup_mac_address() to update the MAC address from the default location in OTP for stm32mp2 platform. The max number of OTP for MAC address is increased to 8 for STM32MP25, defined with get_eth_nb() and checked in setup_mac_address. The MAC address FF:FF:FF:FF:FF:FF, the broadcast ethaddr, is a invalid value used for unused MAC address slot in OTP, for example for board with STM32MP25x part number allows up to 5 ethernet ports but it is not supported by the hardware, without switch; the associated variable "enetaddr%d" is not created. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2024, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <env.h>
|
|
#include <misc.h>
|
|
#include <net.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <dm/device.h>
|
|
#include <dm/uclass.h>
|
|
|
|
/* max: 8 OTP for 5 mac address on stm32mp2*/
|
|
#define MAX_NB_OTP 8
|
|
|
|
/* used when CONFIG_DISPLAY_CPUINFO is activated */
|
|
int print_cpuinfo(void)
|
|
{
|
|
char name[SOC_NAME_SIZE];
|
|
|
|
get_soc_name(name);
|
|
printf("CPU: %s\n", name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int setup_serial_number(void)
|
|
{
|
|
char serial_string[25];
|
|
u32 otp[3] = {0, 0, 0 };
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
if (env_get("serial#"))
|
|
return 0;
|
|
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_DRIVER_GET(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_SERIAL),
|
|
otp, sizeof(otp));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
sprintf(serial_string, "%08X%08X%08X", otp[0], otp[1], otp[2]);
|
|
env_set("serial#", serial_string);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If there is no MAC address in the environment, then it will be initialized
|
|
* (silently) from the value in the OTP.
|
|
*/
|
|
__weak int setup_mac_address(void)
|
|
{
|
|
int ret;
|
|
int i;
|
|
u32 otp[MAX_NB_OTP];
|
|
uchar enetaddr[ARP_HLEN];
|
|
struct udevice *dev;
|
|
int nb_eth, nb_otp, index;
|
|
|
|
if (!IS_ENABLED(CONFIG_NET))
|
|
return 0;
|
|
|
|
nb_eth = get_eth_nb();
|
|
if (!nb_eth)
|
|
return 0;
|
|
|
|
/* 6 bytes for each MAC addr and 4 bytes for each OTP */
|
|
nb_otp = DIV_ROUND_UP(ARP_HLEN * nb_eth, 4);
|
|
if (nb_otp > MAX_NB_OTP) {
|
|
log_err("invalid number of OTP = %d, max = %d\n", nb_otp, MAX_NB_OTP);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_DRIVER_GET(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_MAC), otp, 4 * nb_otp);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (index = 0; index < nb_eth; index++) {
|
|
/* MAC already in environment */
|
|
if (eth_env_get_enetaddr_by_index("eth", index, enetaddr))
|
|
continue;
|
|
|
|
for (i = 0; i < ARP_HLEN; i++)
|
|
enetaddr[i] = ((uint8_t *)&otp)[i + ARP_HLEN * index];
|
|
|
|
/* skip FF:FF:FF:FF:FF:FF */
|
|
if (is_broadcast_ethaddr(enetaddr))
|
|
continue;
|
|
|
|
if (!is_valid_ethaddr(enetaddr)) {
|
|
log_err("invalid MAC address %d in OTP %pM\n",
|
|
index, enetaddr);
|
|
return -EINVAL;
|
|
}
|
|
log_debug("OTP MAC address %d = %pM\n", index, enetaddr);
|
|
ret = eth_env_set_enetaddr_by_index("eth", index, enetaddr);
|
|
if (ret) {
|
|
log_err("Failed to set mac address %pM from OTP: %d\n",
|
|
enetaddr, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|