diff options
Diffstat (limited to 'src/mainboard/scaleway/tagada/bmcinfo.c')
| -rw-r--r-- | src/mainboard/scaleway/tagada/bmcinfo.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/mainboard/scaleway/tagada/bmcinfo.c b/src/mainboard/scaleway/tagada/bmcinfo.c new file mode 100644 index 0000000000..9eb2ef1d0b --- /dev/null +++ b/src/mainboard/scaleway/tagada/bmcinfo.c @@ -0,0 +1,191 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 - 2018 Online SAS. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <arch/early_variables.h> + +#include <console/console.h> + +#include "bmcinfo.h" + +typedef struct { + u32 magic0; // "BMCI" + u32 magic1; // "nfo0" + u16 length; + u16 chksum; + u8 uuid[16]; + u8 bmcSerial[9]; // as null terminated string + u8 slot; + u8 corebootVerbosityLevel; + u8 relaxSecurity; + u32 baudrate; + u8 bootOption; + u8 hwRev; // Note: Initial implementation ended here + u8 disableNic1; + u8 endMarker; // Insert new fields before +} biosBmcInfo_t; + +#define BIOSBMCINFO_MAGIC0 0x49434d42 +#define BIOSBMCINFO_MAGIC1 0x306f666e + + +#define BMC_INFO ((biosBmcInfo_t *)CONFIG_BMC_INFO_LOC) + +enum biosBmcInfoValidFlag_e { + BMCINFO_UNTESTED = 0, + BMCINFO_INVALID, + BMCINFO_INVALID_WARNED, + BMCINFO_VALID_NEED_WARN, + BMCINFO_VALID, +}; + +static enum biosBmcInfoValidFlag_e CAR_GLOBAL biosBmcInfoValidFlag; + +static bool bmcinfo_is_valid(size_t minsize) +{ + const biosBmcInfo_t *bmc_info = BMC_INFO; + int flag = car_get_var(biosBmcInfoValidFlag); + if (flag == BMCINFO_UNTESTED) { + flag = BMCINFO_INVALID; + if ((bmc_info->magic0 == BIOSBMCINFO_MAGIC0) + && (bmc_info->magic1 == BIOSBMCINFO_MAGIC1) + && (bmc_info->length >= offsetof(biosBmcInfo_t, hwRev)) + && (bmc_info->length <= 0x1000)) { + u16 chksum = 0 - (bmc_info->chksum & 0xff) + - (bmc_info->chksum >> 8); + int i; + for (i = 0; i < bmc_info->length ; i++) + chksum += ((u8 *)bmc_info)[i]; + if (bmc_info->chksum == chksum) { + if (bmc_info->length >= offsetof(biosBmcInfo_t, + endMarker)) + flag = BMCINFO_VALID; + else + flag = BMCINFO_VALID_NEED_WARN; + } + } + car_set_var(biosBmcInfoValidFlag, flag); + } +#if !defined(__PRE_RAM__) + if (flag == BMCINFO_INVALID) { + int length = offsetof(biosBmcInfo_t, endMarker); + printk(BIOS_CRIT, "WARNING bmcInfo struct" + "is not available please update your BMC.\n"); + flag = BMCINFO_INVALID_WARNED; + car_set_var(biosBmcInfoValidFlag, flag); + printk(BIOS_CRIT, "bmcInfo magic = \"%x-%x\"\n", + bmc_info->magic0, bmc_info->magic1); + printk(BIOS_CRIT, "bmcInfo length = %d expected = %d\"\n", + bmc_info->length, length); + u16 chksum = 0 - (bmc_info->chksum & 0xff) + - (bmc_info->chksum >> 8); + int i; + for (i = 0; i < bmc_info->length; i++) + chksum += ((u8 *)bmc_info)[i]; + printk(BIOS_CRIT, "bmcInfo chksum = 0x%x expected = 0x%x\"\n", + bmc_info->chksum, chksum); + } + if (flag == BMCINFO_VALID_NEED_WARN) { + printk(BIOS_CRIT, "WARNING bmcInfo struct" + " is incomplete please update your BMC.\n"); + + flag = BMCINFO_VALID; + car_set_var(biosBmcInfoValidFlag, flag); + } +#endif + if (flag < BMCINFO_VALID_NEED_WARN) + return false; + return (bmc_info->length >= minsize); +} + +#define IS_BMC_INFO_FIELD_VALID(field) \ + (bmcinfo_is_valid(offsetof(biosBmcInfo_t, field) \ + + sizeof(((biosBmcInfo_t *)0)->field))) + +char *bmcinfo_serial(void) +{ + if (IS_BMC_INFO_FIELD_VALID(bmcSerial)) + return (char *) BMC_INFO->bmcSerial; + return NULL; +} + +u8 *bmcinfo_uuid(void) +{ + if (IS_BMC_INFO_FIELD_VALID(uuid)) + return BMC_INFO->uuid; + return NULL; +} + + +int bmcinfo_slot(void) +{ + if (IS_BMC_INFO_FIELD_VALID(slot)) + return BMC_INFO->slot; + return -1; +} + +int bmcinfo_hwrev(void) +{ + if (IS_BMC_INFO_FIELD_VALID(hwRev)) + return BMC_INFO->hwRev; + return -1; +} + +u32 bmcinfo_baudrate(void) +{ + if (IS_BMC_INFO_FIELD_VALID(baudrate)) + return BMC_INFO->baudrate; + return 0; +} + +int bmcinfo_coreboot_verbosity_level(void) +{ + if (IS_BMC_INFO_FIELD_VALID(corebootVerbosityLevel)) + return BMC_INFO->corebootVerbosityLevel & 0xf; + return BIOS_CRIT; +} + +int bmcinfo_fsp_verbosity_level(void) +{ + if (IS_BMC_INFO_FIELD_VALID(corebootVerbosityLevel)) + return BMC_INFO->corebootVerbosityLevel >> 4; + return 0; +} + +int bmcinfo_relax_security(void) +{ + if (IS_BMC_INFO_FIELD_VALID(relaxSecurity)) + return BMC_INFO->relaxSecurity; + return 0; +} + +int bmcinfo_boot_option(void) +{ + if (IS_BMC_INFO_FIELD_VALID(bootOption)) + return BMC_INFO->bootOption; + return 0; +} + +int bmcinfo_disable_nic1(void) +{ + if (IS_BMC_INFO_FIELD_VALID(disableNic1)) + return BMC_INFO->disableNic1; + return 0; +} + +/* Add override functions below */ |