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@kernel.org --- board/CZ.NIC/turris_atsha_otp.c | 27 +------ board/CZ.NIC/turris_omnia/Makefile | 2 +- board/CZ.NIC/turris_omnia/turris_omnia.c | 94 +++++++++++++++++++++++- 3 files changed, 93 insertions(+), 30 deletions(-)
diff --git a/board/CZ.NIC/turris_atsha_otp.c b/board/CZ.NIC/turris_atsha_otp.c index a29fe36231..85eebcdf18 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_omnia/Makefile b/board/CZ.NIC/turris_omnia/Makefile index dc39b44ae1..341378b4e5 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@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 6dfde5ee7a..f63640ad64 100644 --- a/board/CZ.NIC/turris_omnia/turris_omnia.c +++ b/board/CZ.NIC/turris_omnia/turris_omnia.c @@ -18,6 +18,7 @@ #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> @@ -25,12 +26,14 @@ #include <time.h> #include <turris-omnia-mcu-interface.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;
@@ -186,6 +189,70 @@ static bool omnia_mcu_has_feature(u32 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; @@ -965,13 +1032,23 @@ 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(" 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; @@ -979,8 +1056,17 @@ 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; }