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e1000e: write protect ICHx NVM to prevent malicious write/erase

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Set the hardware to ignore all write/erase cycles to the GbE region in
the ICHx NVM.  This feature can be disabled by the WriteProtectNVM module
parameter (enabled by default) only after a hardware reset, but
the machine must be power cycled before trying to enable writes.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: arjan@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bruce Allan
2008-10-01 17:18:35 -07:00
committed by Linus Torvalds
parent 20b918dc77
commit 4a77035828
5 changed files with 100 additions and 3 deletions
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10
drivers/net/e1000e/netdev.c
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@@ -47,7 +47,7 @@
#include "e1000.h"
#define DRV_VERSION "0.3.3.3-k2"
#define DRV_VERSION "0.3.3.3-k4"
char e1000e_driver_name[] = "e1000e";
const char e1000e_driver_version[] = DRV_VERSION;
@@ -4467,6 +4467,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
adapter->bd_number = cards_found++;
e1000e_check_options(adapter);
/* setup adapter struct */
err = e1000_sw_init(adapter);
if (err)
@@ -4482,6 +4484,10 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
if (err)
goto err_hw_init;
if ((adapter->flags & FLAG_IS_ICH) &&
(adapter->flags & FLAG_READ_ONLY_NVM))
e1000e_write_protect_nvm_ich8lan(&adapter->hw);
hw->mac.ops.get_bus_info(&adapter->hw);
adapter->hw.phy.autoneg_wait_to_complete = 0;
@@ -4573,8 +4579,6 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
INIT_WORK(&adapter->reset_task, e1000_reset_task);
INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
e1000e_check_options(adapter);
/* Initialize link parameters. User can change them with ethtool */
adapter->hw.mac.autoneg = 1;
adapter->fc_autoneg = 1;