[PATCH u-boot-mvebu 2/4] arm: mvebu: turris_omnia: Implement getting board information from MCU
Marek Behún
kabel at kernel.org
Mon Mar 4 16:21:46 CET 2024
Implement reading board serial number, first MAC address and board
version from MCU. MCU supports board information if the FEAT_BOARD_INFO
feature bit is set in MCU features.
Prefer getting board information from MCU if supported, fallback to
Atmel SHA chip.
Signed-off-by: Marek Behún <kabel at kernel.org>
---
board/CZ.NIC/turris_atsha_otp.c | 27 +------
board/CZ.NIC/turris_common.c | 42 ++++++++++
board/CZ.NIC/turris_common.h | 10 +++
board/CZ.NIC/turris_omnia/Makefile | 2 +-
board/CZ.NIC/turris_omnia/turris_omnia.c | 98 +++++++++++++++++++++++-
5 files changed, 149 insertions(+), 30 deletions(-)
create mode 100644 board/CZ.NIC/turris_common.c
create mode 100644 board/CZ.NIC/turris_common.h
diff --git a/board/CZ.NIC/turris_atsha_otp.c b/board/CZ.NIC/turris_atsha_otp.c
index a29fe362317..85eebcdf18e 100644
--- a/board/CZ.NIC/turris_atsha_otp.c
+++ b/board/CZ.NIC/turris_atsha_otp.c
@@ -11,6 +11,7 @@
#include <atsha204a-i2c.h>
#include "turris_atsha_otp.h"
+#include "turris_common.h"
#define TURRIS_ATSHA_OTP_VERSION 0
#define TURRIS_ATSHA_OTP_SERIAL 1
@@ -32,26 +33,6 @@ static struct udevice *get_atsha204a_dev(void)
return dev;
}
-static void increment_mac(u8 *mac)
-{
- int i;
-
- for (i = 5; i >= 3; i--) {
- mac[i] += 1;
- if (mac[i])
- break;
- }
-}
-
-static void set_mac_if_invalid(int i, u8 *mac)
-{
- u8 oldmac[6];
-
- if (is_valid_ethaddr(mac) &&
- !eth_env_get_enetaddr_by_index("eth", i, oldmac))
- eth_env_set_enetaddr_by_index("eth", i, mac);
-}
-
int turris_atsha_otp_init_mac_addresses(int first_idx)
{
struct udevice *dev = get_atsha204a_dev();
@@ -84,11 +65,7 @@ int turris_atsha_otp_init_mac_addresses(int first_idx)
mac[4] = mac1[2];
mac[5] = mac1[3];
- set_mac_if_invalid((first_idx + 0) % 3, mac);
- increment_mac(mac);
- set_mac_if_invalid((first_idx + 1) % 3, mac);
- increment_mac(mac);
- set_mac_if_invalid((first_idx + 2) % 3, mac);
+ turris_init_mac_addresses(first_idx, mac);
return 0;
}
diff --git a/board/CZ.NIC/turris_common.c b/board/CZ.NIC/turris_common.c
new file mode 100644
index 00000000000..1717dda82eb
--- /dev/null
+++ b/board/CZ.NIC/turris_common.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Marek Behún <kabel at kernel.org>
+ */
+
+#include <env.h>
+#include <net.h>
+
+#include "turris_common.h"
+
+static void increment_mac(u8 *mac)
+{
+ int i;
+
+ for (i = 5; i >= 3; i--) {
+ mac[i] += 1;
+ if (mac[i])
+ break;
+ }
+}
+
+static void set_mac_if_invalid(int i, u8 *mac)
+{
+ u8 oldmac[6];
+
+ if (is_valid_ethaddr(mac) &&
+ !eth_env_get_enetaddr_by_index("eth", i, oldmac))
+ eth_env_set_enetaddr_by_index("eth", i, mac);
+}
+
+void turris_init_mac_addresses(int first_idx, const u8 *first_mac)
+{
+ u8 mac[6];
+
+ memcpy(mac, first_mac, sizeof(mac));
+
+ set_mac_if_invalid((first_idx + 0) % 3, mac);
+ increment_mac(mac);
+ set_mac_if_invalid((first_idx + 1) % 3, mac);
+ increment_mac(mac);
+ set_mac_if_invalid((first_idx + 2) % 3, mac);
+}
diff --git a/board/CZ.NIC/turris_common.h b/board/CZ.NIC/turris_common.h
new file mode 100644
index 00000000000..5565ea9fd2a
--- /dev/null
+++ b/board/CZ.NIC/turris_common.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef TURRIS_COMMON_H
+#define TURRIS_COMMON_H
+
+#include <asm/types.h>
+
+void turris_init_mac_addresses(int first_idx, const u8 *first_mac);
+
+#endif
diff --git a/board/CZ.NIC/turris_omnia/Makefile b/board/CZ.NIC/turris_omnia/Makefile
index dc39b44ae19..341378b4e54 100644
--- a/board/CZ.NIC/turris_omnia/Makefile
+++ b/board/CZ.NIC/turris_omnia/Makefile
@@ -2,4 +2,4 @@
#
# Copyright (C) 2017 Marek Behún <kabel at kernel.org>
-obj-y := turris_omnia.o ../turris_atsha_otp.o
+obj-y := turris_omnia.o ../turris_atsha_otp.o ../turris_common.o
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c
index b285e959d06..7a51ed3ace5 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -18,18 +18,21 @@
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
+#include <asm/unaligned.h>
#include <dm/uclass.h>
#include <dt-bindings/gpio/gpio.h>
#include <fdt_support.h>
#include <hexdump.h>
#include <time.h>
#include <linux/bitops.h>
+#include <linux/bitrev.h>
#include <linux/delay.h>
#include <u-boot/crc.h>
#include "../drivers/ddr/marvell/a38x/ddr3_init.h"
#include <../serdes/a38x/high_speed_env_spec.h>
#include "../turris_atsha_otp.h"
+#include "../turris_common.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -71,6 +74,9 @@ enum mcu_commands {
/* available if EXT_CMD bit set in features */
CMD_EXT_CONTROL = 0x12,
+
+ /* available if BOARD_INFO it set in features */
+ CMD_BOARD_INFO_GET = 0x2c,
};
enum status_word_bits {
@@ -88,6 +94,7 @@ enum status_word_bits {
enum features_e {
FEAT_PERIPH_MCU = BIT(0),
FEAT_EXT_CMDS = BIT(1),
+ FEAT_BOARD_INFO = BIT(15),
};
/* CMD_EXT_CONTROL */
@@ -214,6 +221,70 @@ static bool omnia_mcu_has_feature(u16 feature)
return feature & features;
}
+static u32 omnia_mcu_crc32(const void *p, size_t len)
+{
+ u32 val, crc = 0;
+
+ compiletime_assert(!(len % 4), "length has to be a multiple of 4");
+
+ while (len) {
+ val = bitrev32(get_unaligned_le32(p));
+ crc = crc32(crc, (void *)&val, 4);
+ p += 4;
+ len -= 4;
+ }
+
+ return ~bitrev32(crc);
+}
+
+/* Can only be called after relocation, since it needs cleared BSS */
+static int omnia_mcu_board_info(char *serial, u8 *mac, char *version)
+{
+ static u8 reply[17];
+ static bool cached;
+
+ if (!cached) {
+ u8 csum;
+ int ret;
+
+ ret = omnia_mcu_read(CMD_BOARD_INFO_GET, reply, sizeof(reply));
+ if (ret)
+ return ret;
+
+ if (reply[0] != 16)
+ return -EBADMSG;
+
+ csum = reply[16];
+ reply[16] = 0;
+
+ if ((omnia_mcu_crc32(&reply[1], 16) & 0xff) != csum)
+ return -EBADMSG;
+
+ cached = true;
+ }
+
+ if (serial) {
+ const char *serial_env;
+
+ serial_env = env_get("serial#");
+ if (serial_env && strlen(serial_env) == 16) {
+ strcpy(serial, serial_env);
+ } else {
+ sprintf(serial, "%016llX",
+ get_unaligned_le64(&reply[1]));
+ env_set("serial#", serial);
+ }
+ }
+
+ if (mac)
+ memcpy(mac, &reply[9], ETH_ALEN);
+
+ if (version)
+ sprintf(version, "%u", reply[15]);
+
+ return 0;
+}
+
static void enable_a385_watchdog(unsigned int timeout_minutes)
{
struct sar_freq_modes sar_freq;
@@ -989,14 +1060,24 @@ int board_late_init(void)
int checkboard(void)
{
- char serial[17];
+ char serial[17], version[4];
+ bool has_version;
int err;
- err = turris_atsha_otp_get_serial_number(serial);
printf("Model: Turris Omnia\n");
printf(" MCU type: %s\n", omnia_get_mcu_type());
printf(" MCU version: %s\n", omnia_get_mcu_version());
printf(" RAM size: %i MiB\n", omnia_get_ram_size_gb() * 1024);
+
+ if (omnia_mcu_has_feature(FEAT_BOARD_INFO)) {
+ err = omnia_mcu_board_info(serial, NULL, version);
+ has_version = !err;
+ } else {
+ err = turris_atsha_otp_get_serial_number(serial);
+ has_version = false;
+ }
+
+ printf(" Board version: %s\n", has_version ? version : "unknown");
printf(" Serial Number: %s\n", !err ? serial : "unknown");
return 0;
@@ -1004,8 +1085,17 @@ int checkboard(void)
int misc_init_r(void)
{
- turris_atsha_otp_init_mac_addresses(1);
- turris_atsha_otp_init_serial_number();
+ if (omnia_mcu_has_feature(FEAT_BOARD_INFO)) {
+ char serial[17];
+ u8 first_mac[6];
+
+ if (!omnia_mcu_board_info(serial, first_mac, NULL))
+ turris_init_mac_addresses(1, first_mac);
+ } else {
+ turris_atsha_otp_init_mac_addresses(1);
+ turris_atsha_otp_init_serial_number();
+ }
+
return 0;
}
--
2.43.0
More information about the U-Boot
mailing list