From: Rob Swindell Date: Mon, 19 Sep 2016 07:58:03 +0000 (-0400) Subject: bnxt_en: Added support for Secure Firmware Update X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5ac67d8bc753b122175e682274599338b3ee7d42;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git bnxt_en: Added support for Secure Firmware Update Using Ethtool flashdev command, entire NVM package (*.pkg) files may now be staged into the "update" area of the NVM and subsequently verified and installed by the firmware using the newly introduced command: NVM_INSTALL_UPDATE. We also introduce use of the new firmware command FW_SET_TIME so that the NVM-resident package installation log contains valid time-stamps. Signed-off-by: Rob Swindell Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index f6b4f342d7b4..f0a9d23fda15 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -4314,6 +4315,27 @@ hwrm_ver_get_exit: return rc; } +int bnxt_hwrm_fw_set_time(struct bnxt *bp) +{ + struct hwrm_fw_set_time_input req = {0}; + struct rtc_time tm; + struct timeval tv; + + if (bp->hwrm_spec_code < 0x10400) + return -EOPNOTSUPP; + + do_gettimeofday(&tv); + rtc_time_to_tm(tv.tv_sec, &tm); + bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_SET_TIME, -1, -1); + req.year = cpu_to_le16(1900 + tm.tm_year); + req.month = 1 + tm.tm_mon; + req.day = tm.tm_mday; + req.hour = tm.tm_hour; + req.minute = tm.tm_min; + req.second = tm.tm_sec; + return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT); +} + static int bnxt_hwrm_port_qstats(struct bnxt *bp) { int rc; @@ -6811,6 +6833,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (rc) goto init_err; + bnxt_hwrm_fw_set_time(bp); + dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE | diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 012cc51440b7..41033d01fe8d 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1220,6 +1220,7 @@ int bnxt_hwrm_set_coal(struct bnxt *); int bnxt_hwrm_func_qcaps(struct bnxt *); int bnxt_hwrm_set_pause(struct bnxt *); int bnxt_hwrm_set_link_setting(struct bnxt *, bool, bool); +int bnxt_hwrm_fw_set_time(struct bnxt *); int bnxt_open_nic(struct bnxt *, bool, bool); int bnxt_close_nic(struct bnxt *, bool, bool); int bnxt_get_max_rings(struct bnxt *, int *, int *, bool); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index b83e17403d6c..4a430b623489 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -21,6 +21,8 @@ #include "bnxt_nvm_defs.h" /* NVRAM content constant and structure defs */ #include "bnxt_fw_hdr.h" /* Firmware hdr constant and structure defs */ #define FLASH_NVRAM_TIMEOUT ((HWRM_CMD_TIMEOUT) * 100) +#define FLASH_PACKAGE_TIMEOUT ((HWRM_CMD_TIMEOUT) * 200) +#define INSTALL_PACKAGE_TIMEOUT ((HWRM_CMD_TIMEOUT) * 200) static char *bnxt_get_pkgver(struct net_device *dev, char *buf, size_t buflen); @@ -1028,6 +1030,10 @@ static u32 bnxt_get_link(struct net_device *dev) return bp->link_info.link_up; } +static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal, + u16 ext, u16 *index, u32 *item_length, + u32 *data_length); + static int bnxt_flash_nvram(struct net_device *dev, u16 dir_type, u16 dir_ordinal, @@ -1179,7 +1185,6 @@ static int bnxt_flash_firmware(struct net_device *dev, (unsigned long)calculated_crc); return -EINVAL; } - /* TODO: Validate digital signature (RSA-encrypted SHA-256 hash) here */ rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST, 0, 0, fw_data, fw_size); if (rc == 0) /* Firmware update successful */ @@ -1188,6 +1193,57 @@ static int bnxt_flash_firmware(struct net_device *dev, return rc; } +static int bnxt_flash_microcode(struct net_device *dev, + u16 dir_type, + const u8 *fw_data, + size_t fw_size) +{ + struct bnxt_ucode_trailer *trailer; + u32 calculated_crc; + u32 stored_crc; + int rc = 0; + + if (fw_size < sizeof(struct bnxt_ucode_trailer)) { + netdev_err(dev, "Invalid microcode file size: %u\n", + (unsigned int)fw_size); + return -EINVAL; + } + trailer = (struct bnxt_ucode_trailer *)(fw_data + (fw_size - + sizeof(*trailer))); + if (trailer->sig != cpu_to_le32(BNXT_UCODE_TRAILER_SIGNATURE)) { + netdev_err(dev, "Invalid microcode trailer signature: %08X\n", + le32_to_cpu(trailer->sig)); + return -EINVAL; + } + if (le16_to_cpu(trailer->dir_type) != dir_type) { + netdev_err(dev, "Expected microcode type: %d, read: %d\n", + dir_type, le16_to_cpu(trailer->dir_type)); + return -EINVAL; + } + if (le16_to_cpu(trailer->trailer_length) < + sizeof(struct bnxt_ucode_trailer)) { + netdev_err(dev, "Invalid microcode trailer length: %d\n", + le16_to_cpu(trailer->trailer_length)); + return -EINVAL; + } + + /* Confirm the CRC32 checksum of the file: */ + stored_crc = le32_to_cpu(*(__le32 *)(fw_data + fw_size - + sizeof(stored_crc))); + calculated_crc = ~crc32(~0, fw_data, fw_size - sizeof(stored_crc)); + if (calculated_crc != stored_crc) { + netdev_err(dev, + "CRC32 (%08lX) does not match calculated: %08lX\n", + (unsigned long)stored_crc, + (unsigned long)calculated_crc); + return -EINVAL; + } + rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST, + 0, 0, fw_data, fw_size); + + return rc; +} + static bool bnxt_dir_type_is_ape_bin_format(u16 dir_type) { switch (dir_type) { @@ -1206,7 +1262,7 @@ static bool bnxt_dir_type_is_ape_bin_format(u16 dir_type) return false; } -static bool bnxt_dir_type_is_unprotected_exec_format(u16 dir_type) +static bool bnxt_dir_type_is_other_exec_format(u16 dir_type) { switch (dir_type) { case BNX_DIR_TYPE_AVS: @@ -1227,7 +1283,7 @@ static bool bnxt_dir_type_is_unprotected_exec_format(u16 dir_type) static bool bnxt_dir_type_is_executable(u16 dir_type) { return bnxt_dir_type_is_ape_bin_format(dir_type) || - bnxt_dir_type_is_unprotected_exec_format(dir_type); + bnxt_dir_type_is_other_exec_format(dir_type); } static int bnxt_flash_firmware_from_file(struct net_device *dev, @@ -1237,10 +1293,6 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev, const struct firmware *fw; int rc; - if (dir_type != BNX_DIR_TYPE_UPDATE && - bnxt_dir_type_is_executable(dir_type) == false) - return -EINVAL; - rc = request_firmware(&fw, filename, &dev->dev); if (rc != 0) { netdev_err(dev, "Error %d requesting firmware file: %s\n", @@ -1249,6 +1301,8 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev, } if (bnxt_dir_type_is_ape_bin_format(dir_type) == true) rc = bnxt_flash_firmware(dev, dir_type, fw->data, fw->size); + else if (bnxt_dir_type_is_other_exec_format(dir_type) == true) + rc = bnxt_flash_microcode(dev, dir_type, fw->data, fw->size); else rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST, 0, 0, fw->data, fw->size); @@ -1257,10 +1311,83 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev, } static int bnxt_flash_package_from_file(struct net_device *dev, - char *filename) + char *filename, u32 install_type) { - netdev_err(dev, "packages are not yet supported\n"); - return -EINVAL; + struct bnxt *bp = netdev_priv(dev); + struct hwrm_nvm_install_update_output *resp = bp->hwrm_cmd_resp_addr; + struct hwrm_nvm_install_update_input install = {0}; + const struct firmware *fw; + u32 item_len; + u16 index; + int rc; + + bnxt_hwrm_fw_set_time(bp); + + if (bnxt_find_nvram_item(dev, BNX_DIR_TYPE_UPDATE, + BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE, + &index, &item_len, NULL) != 0) { + netdev_err(dev, "PKG update area not created in nvram\n"); + return -ENOBUFS; + } + + rc = request_firmware(&fw, filename, &dev->dev); + if (rc != 0) { + netdev_err(dev, "PKG error %d requesting file: %s\n", + rc, filename); + return rc; + } + + if (fw->size > item_len) { + netdev_err(dev, "PKG insufficient update area in nvram: %lu", + (unsigned long)fw->size); + rc = -EFBIG; + } else { + dma_addr_t dma_handle; + u8 *kmem; + struct hwrm_nvm_modify_input modify = {0}; + + bnxt_hwrm_cmd_hdr_init(bp, &modify, HWRM_NVM_MODIFY, -1, -1); + + modify.dir_idx = cpu_to_le16(index); + modify.len = cpu_to_le32(fw->size); + + kmem = dma_alloc_coherent(&bp->pdev->dev, fw->size, + &dma_handle, GFP_KERNEL); + if (!kmem) { + netdev_err(dev, + "dma_alloc_coherent failure, length = %u\n", + (unsigned int)fw->size); + rc = -ENOMEM; + } else { + memcpy(kmem, fw->data, fw->size); + modify.host_src_addr = cpu_to_le64(dma_handle); + + rc = hwrm_send_message(bp, &modify, sizeof(modify), + FLASH_PACKAGE_TIMEOUT); + dma_free_coherent(&bp->pdev->dev, fw->size, kmem, + dma_handle); + } + } + release_firmware(fw); + if (rc) + return rc; + + if ((install_type & 0xffff) == 0) + install_type >>= 16; + bnxt_hwrm_cmd_hdr_init(bp, &install, HWRM_NVM_INSTALL_UPDATE, -1, -1); + install.install_type = cpu_to_le32(install_type); + + rc = hwrm_send_message(bp, &install, sizeof(install), + INSTALL_PACKAGE_TIMEOUT); + if (rc) + return -EOPNOTSUPP; + + if (resp->result) { + netdev_err(dev, "PKG install error = %d, problem_item = %d\n", + (s8)resp->result, (int)resp->problem_item); + return -ENOPKG; + } + return 0; } static int bnxt_flash_device(struct net_device *dev, @@ -1271,8 +1398,10 @@ static int bnxt_flash_device(struct net_device *dev, return -EINVAL; } - if (flash->region == ETHTOOL_FLASH_ALL_REGIONS) - return bnxt_flash_package_from_file(dev, flash->data); + if (flash->region == ETHTOOL_FLASH_ALL_REGIONS || + flash->region > 0xffff) + return bnxt_flash_package_from_file(dev, flash->data, + flash->region); return bnxt_flash_firmware_from_file(dev, flash->region, flash->data); } @@ -1516,7 +1645,7 @@ static int bnxt_set_eeprom(struct net_device *dev, /* Create or re-write an NVM item: */ if (bnxt_dir_type_is_executable(type) == true) - return -EINVAL; + return -EOPNOTSUPP; ext = eeprom->magic & 0xffff; ordinal = eeprom->offset >> 16; attr = eeprom->offset & 0xffff; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_fw_hdr.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_fw_hdr.h index 82bf44ab811b..cad30ddc6936 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_fw_hdr.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_fw_hdr.h @@ -11,6 +11,7 @@ #define __BNXT_FW_HDR_H__ #define BNXT_FIRMWARE_BIN_SIGNATURE 0x1a4d4342 /* "BCM"+0x1a */ +#define BNXT_UCODE_TRAILER_SIGNATURE 0x726c7254 /* "Trlr" */ enum SUPPORTED_FAMILY { DEVICE_5702_3_4_FAMILY, /* 0 - Denali, Vinson, K2 */ @@ -85,7 +86,7 @@ enum SUPPORTED_MEDIA { struct bnxt_fw_header { __le32 signature; /* constains the constant value of - * BNXT_Firmware_Bin_Signatures + * BNXT_FIRMWARE_BIN_SIGNATURE */ u8 flags; /* reserved for ChiMP use */ u8 code_type; /* enum SUPPORTED_CODE */ @@ -102,4 +103,17 @@ struct bnxt_fw_header { u8 major_ver; }; +/* Microcode and pre-boot software/firmware trailer: */ +struct bnxt_ucode_trailer { + u8 rsa_sig[256]; + __le16 flags; + u8 version_format; + u8 version_length; + u8 version[16]; + __le16 dir_type; + __le16 trailer_length; + __le32 sig; /* BNXT_UCODE_TRAILER_SIGNATURE */ + __le32 chksum; /* CRC-32 */ +}; + #endif