78feacc440
Introduce boot media protection settings and use the existing boot_device_wp_region() function to apply settings on all platforms that supports it yet. Also remove the Intel southbridge code, which is now obsolete. Every platform locks the SPIBAR in a different stage. For align up with the common mrc cache driver and lock after it has been written to. Tested on Supermicro X11SSH-TF. The whole address space is write-protected. Change-Id: Iceb3ecf0bde5cec562bc62d1d5c79da35305d183 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32704 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Reviewed-by: Julius Werner <jwerner@chromium.org>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/* This file is part of the coreboot project. */
|
|
|
|
#include <boot_device.h>
|
|
#include <commonlib/region.h>
|
|
#include <console/console.h>
|
|
#include <bootstate.h>
|
|
|
|
/*
|
|
* Enables read- /write protection of the bootmedia.
|
|
*/
|
|
void boot_device_security_lockdown(void)
|
|
{
|
|
const struct region_device *rdev;
|
|
enum bootdev_prot_type lock_type;
|
|
|
|
printk(BIOS_DEBUG, "BM-LOCKDOWN: Enabling boot media protection scheme ");
|
|
|
|
if (CONFIG(BOOTMEDIA_LOCK_CONTROLLER)) {
|
|
if (CONFIG(BOOTMEDIA_LOCK_WHOLE_RO)) {
|
|
printk(BIOS_DEBUG, "'readonly'");
|
|
lock_type = CTRLR_WP;
|
|
} else if (CONFIG(BOOTMEDIA_LOCK_WHOLE_NO_ACCESS)) {
|
|
printk(BIOS_DEBUG, "'no access'");
|
|
lock_type = CTRLR_RWP;
|
|
}
|
|
printk(BIOS_DEBUG, "using CTRL...\n");
|
|
} else {
|
|
if (CONFIG(BOOTMEDIA_LOCK_WHOLE_RO)) {
|
|
printk(BIOS_DEBUG, "'readonly'");
|
|
lock_type = MEDIA_WP;
|
|
}
|
|
printk(BIOS_DEBUG, "using flash chip...\n");
|
|
}
|
|
|
|
rdev = boot_device_ro();
|
|
|
|
if (boot_device_wp_region(rdev, lock_type) >= 0)
|
|
printk(BIOS_INFO, "BM-LOCKDOWN: Enabled bootmedia protection\n");
|
|
else
|
|
printk(BIOS_ERR, "BM-LOCKDOWN: Failed to enable bootmedia protection\n");
|
|
}
|
|
|
|
static void lock(void *unused)
|
|
{
|
|
boot_device_security_lockdown();
|
|
}
|
|
|
|
/*
|
|
* Keep in sync with mrc_cache.c
|
|
*/
|
|
|
|
#if CONFIG(MRC_WRITE_NV_LATE)
|
|
BOOT_STATE_INIT_ENTRY(BS_OS_RESUME_CHECK, BS_ON_EXIT, lock, NULL);
|
|
#else
|
|
BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_ENTRY, lock, NULL);
|
|
#endif
|