netdev - [PATCH net-next] sfc: add missing NVRAM partition types for EF10

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Date:   Wed, 7 Nov 2018 18:12:42 +0000
From:   Edward Cree <ecree@...arflare.com>
To:     <davem@...emloft.net>
CC:     <linux-net-drivers@...arflare.com>, <netdev@...r.kernel.org>
Subject: [PATCH net-next] sfc: add missing NVRAM partition types for EF10

Expose the MUM/SUC Firmware, UEFI Expansion ROM and MC Status partitions
 of the NIC's NVRAM as MTDs if found on the NIC.  The first two are needed
 in order to properly update them when performing firmware updates; the MC
 Status partition is used to determine whether a signed firmware image was
 accepted or rejected by a Secure NIC.

Signed-off-by: Edward Cree <ecree@...arflare.com>
---
 drivers/net/ethernet/sfc/ef10.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 7eeac3d6cfe8..b6a50058bb8d 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -6041,6 +6041,10 @@ static const struct efx_ef10_nvram_type_info efx_ef10_nvram_types[] = {
 	{ NVRAM_PARTITION_TYPE_EXPROM_CONFIG_PORT3, 0,   3, "sfc_exp_rom_cfg" },
 	{ NVRAM_PARTITION_TYPE_LICENSE,		   0,    0, "sfc_license" },
 	{ NVRAM_PARTITION_TYPE_PHY_MIN,		   0xff, 0, "sfc_phy_fw" },
+	/* MUM and SUC firmware share the same partition type */
+	{ NVRAM_PARTITION_TYPE_MUM_FIRMWARE,	   0,    0, "sfc_mumfw" },
+	{ NVRAM_PARTITION_TYPE_EXPANSION_UEFI,	   0,    0, "sfc_uefi" },
+	{ NVRAM_PARTITION_TYPE_STATUS,		   0,    0, "sfc_status" }
 };
 
 static int efx_ef10_mtd_probe_partition(struct efx_nic *efx,
@@ -6091,6 +6095,9 @@ static int efx_ef10_mtd_probe_partition(struct efx_nic *efx,
 	part->common.mtd.flags = MTD_CAP_NORFLASH;
 	part->common.mtd.size = size;
 	part->common.mtd.erasesize = erase_size;
+	/* sfc_status is read-only */
+	if (!erase_size)
+		part->common.mtd.flags |= MTD_NO_ERASE;
 
 	return 0;
 }