sb/intel/{bd82x6x,ibexpeak}: Fix out of bounds access in intel_me_status()
On Ibex Peak (and maybe also on other platforms), when the AltMeDisable bit is set (-S or -s option of me_cleaner), the ME PCI device disappears from the bus and its configuration space is all ones. This causes a freeze in intel_me_status(), as coreboot tries to access an out of bounds array element. Change-Id: I957abebe1db15ec2c9a2b439f0103106bfa56b33 Signed-off-by: Nicola Corna <nicola@corna.info> Reviewed-on: https://review.coreboot.org/26601 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
committed by
Patrick Georgi
parent
b433d26ef1
commit
14604dad4e
@@ -18,6 +18,7 @@
|
||||
#include <console/console.h>
|
||||
#include <delay.h>
|
||||
#include <device/pci_ids.h>
|
||||
#include <device/pci_def.h>
|
||||
#include <halt.h>
|
||||
#include <string.h>
|
||||
#include <timestamp.h>
|
||||
@@ -45,11 +46,17 @@ void intel_early_me_status(void)
|
||||
{
|
||||
struct me_hfs hfs;
|
||||
struct me_gmes gmes;
|
||||
u32 id = pci_read_config32(PCH_ME_DEV, PCI_VENDOR_ID);
|
||||
|
||||
pci_read_dword_ptr(&hfs, PCI_ME_HFS);
|
||||
pci_read_dword_ptr(&gmes, PCI_ME_GMES);
|
||||
if ((id == 0xffffffff) || (id == 0x00000000) ||
|
||||
(id == 0x0000ffff) || (id == 0xffff0000)) {
|
||||
printk(BIOS_DEBUG, "Missing Intel ME PCI device.\n");
|
||||
} else {
|
||||
pci_read_dword_ptr(&hfs, PCI_ME_HFS);
|
||||
pci_read_dword_ptr(&gmes, PCI_ME_GMES);
|
||||
|
||||
intel_me_status(&hfs, &gmes);
|
||||
intel_me_status(&hfs, &gmes);
|
||||
}
|
||||
}
|
||||
|
||||
int intel_early_me_init(void)
|
||||
|
@@ -18,6 +18,7 @@
|
||||
#include <console/console.h>
|
||||
#include <delay.h>
|
||||
#include <device/pci_ids.h>
|
||||
#include <device/pci_def.h>
|
||||
#include <halt.h>
|
||||
#include <string.h>
|
||||
#include "me.h"
|
||||
@@ -51,11 +52,17 @@ void intel_early_me_status(void)
|
||||
{
|
||||
struct me_hfs hfs;
|
||||
struct me_gmes gmes;
|
||||
u32 id = pci_read_config32(PCH_ME_DEV, PCI_VENDOR_ID);
|
||||
|
||||
pci_read_dword_ptr(&hfs, PCI_ME_HFS);
|
||||
pci_read_dword_ptr(&gmes, PCI_ME_GMES);
|
||||
if ((id == 0xffffffff) || (id == 0x00000000) ||
|
||||
(id == 0x0000ffff) || (id == 0xffff0000)) {
|
||||
printk(BIOS_DEBUG, "Missing Intel ME PCI device.\n");
|
||||
} else {
|
||||
pci_read_dword_ptr(&hfs, PCI_ME_HFS);
|
||||
pci_read_dword_ptr(&gmes, PCI_ME_GMES);
|
||||
|
||||
intel_me_status(&hfs, &gmes);
|
||||
intel_me_status(&hfs, &gmes);
|
||||
}
|
||||
}
|
||||
|
||||
int intel_early_me_init(void)
|
||||
|
Reference in New Issue
Block a user