From 4412a188a58114060b8620fa4c66dc9057a566f6 Mon Sep 17 00:00:00 2001 From: Philippe Schenker Date: Mon, 20 Jun 2022 16:57:45 +0200 Subject: [PATCH] toradex: tdx-cfg-block: add new toradex oui range Add new Toradex MAC OUI (8c:06:cb), to the config block. With this change we extend the possible serial-numbers as follows: For serial-numbers 00000000-16777215 OUI 00:14:2d is taken For serial-numbers 16777216-33554431 OUI 8c:06:cb is taken Lower 24-bit of the serial number are used in the NIC part of the MAC address, the complete serial number can be calculated using the OUI. Signed-off-by: Philippe Schenker Reviewed-by: Francesco Dolcini Reviewed-by: Fabio Estevam Acked-by: Marcel Ziswiler --- board/toradex/common/tdx-cfg-block.c | 42 +++++++++++++++++++++++++--- board/toradex/common/tdx-cfg-block.h | 2 ++ board/toradex/common/tdx-common.c | 5 +--- 3 files changed, 41 insertions(+), 8 deletions(-) diff --git a/board/toradex/common/tdx-cfg-block.c b/board/toradex/common/tdx-cfg-block.c index 678d4e07c2..9305709a3c 100644 --- a/board/toradex/common/tdx-cfg-block.c +++ b/board/toradex/common/tdx-cfg-block.c @@ -159,6 +159,42 @@ const char * const toradex_display_adapters[] = { [159] = "Verdin DSI to LVDS Adapter", }; +const u32 toradex_ouis[] = { + [0] = 0x00142dUL, + [1] = 0x8c06cbUL, +}; + +static u32 get_serial_from_mac(struct toradex_eth_addr *eth_addr) +{ + int i; + u32 oui = ntohl(eth_addr->oui) >> 8; + u32 nic = ntohl(eth_addr->nic) >> 8; + + for (i = 0; i < ARRAY_SIZE(toradex_ouis); i++) { + if (toradex_ouis[i] == oui) + break; + } + + return (u32)((i << 24) + nic); +} + +void get_mac_from_serial(u32 tdx_serial, struct toradex_eth_addr *eth_addr) +{ + u8 oui_index = tdx_serial >> 24; + u32 nic = tdx_serial & GENMASK(23, 0); + u32 oui; + + if (oui_index >= ARRAY_SIZE(toradex_ouis)) { + puts("Can't find OUI for this serial#\n"); + oui_index = 0; + } + + oui = toradex_ouis[oui_index]; + + eth_addr->oui = htonl(oui << 8); + eth_addr->nic = htonl(nic << 8); +} + #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_MMC static int tdx_cfg_block_mmc_storage(u8 *config_block, int write) { @@ -331,8 +367,7 @@ int read_tdx_cfg_block(void) memcpy(&tdx_eth_addr, config_block + offset, 6); - /* NIC part of MAC address is serial number */ - tdx_serial = ntohl(tdx_eth_addr.nic) >> 8; + tdx_serial = get_serial_from_mac(&tdx_eth_addr); break; case TAG_HW: memcpy(&tdx_hw_tag, config_block + offset, 8); @@ -974,8 +1009,7 @@ static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, } /* Convert serial number to MAC address (the storage format) */ - tdx_eth_addr.oui = htonl(0x00142dUL << 8); - tdx_eth_addr.nic = htonl(tdx_serial << 8); + get_mac_from_serial(tdx_serial, &tdx_eth_addr); /* Valid Tag */ write_tag(config_block, &offset, TAG_VALID, NULL, 0); diff --git a/board/toradex/common/tdx-cfg-block.h b/board/toradex/common/tdx-cfg-block.h index 43e662e41d..1790698486 100644 --- a/board/toradex/common/tdx-cfg-block.h +++ b/board/toradex/common/tdx-cfg-block.h @@ -114,4 +114,6 @@ int read_tdx_cfg_block_carrier(void); int try_migrate_tdx_cfg_block_carrier(void); +void get_mac_from_serial(u32 tdx_serial, struct toradex_eth_addr *eth_addr); + #endif /* _TDX_CFG_BLOCK_H */ diff --git a/board/toradex/common/tdx-common.c b/board/toradex/common/tdx-common.c index 5ad5d00a0d..3798bf9537 100644 --- a/board/toradex/common/tdx-common.c +++ b/board/toradex/common/tdx-common.c @@ -20,8 +20,6 @@ #include #include "tdx-common.h" -#define TORADEX_OUI 0x00142dUL - #define SERIAL_STR_LEN 8 #define MODULE_VER_STR_LEN 4 // V1.1 #define MODULE_REV_STR_LEN 3 // [A-Z] or #[26-99] @@ -104,8 +102,7 @@ int show_board_info(void) if (read_tdx_cfg_block()) { printf("MISSING TORADEX CONFIG BLOCK\n"); - tdx_eth_addr.oui = htonl(TORADEX_OUI << 8); - tdx_eth_addr.nic = htonl(tdx_serial << 8); + get_mac_from_serial(tdx_serial, &tdx_eth_addr); checkboard(); } else { snprintf(tdx_serial_str, sizeof(tdx_serial_str), -- 2.39.5