Matt DeVillier (matt.devillier@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6003
-gerrit
commit 8cec9d375df89831c6351bd80f40447af88940f3 Author: Luigi Semenzato semenzato@chromium.org Date: Mon Jan 13 17:45:54 2014 -0800
libpayload: find source of input characters
This change makes it possible for vboot to avoid an exploit that could cause involuntary switch to dev mode. It gives depthcharge/vboot some information on the type of input device that generated a key.
BUG=chrome-os-partner:21729 TEST=manually tested for panther BRANCH=none CQ-DEPEND=CL:182420,CL:182241,CL:182946
Change-Id: I87bdac34bfc50f3adb0b35a2c57a8f95f4fbc35b Signed-off-by: Matt DeVillier matt.devillier@gmail.com Reviewed-on: https://chromium-review.googlesource.com/182357 Reviewed-by: Luigi Semenzato semenzato@chromium.org Tested-by: Luigi Semenzato semenzato@chromium.org Commit-Queue: Luigi Semenzato semenzato@chromium.org --- payloads/libpayload/drivers/usb/usbhid.c | 3 ++- payloads/libpayload/include/libpayload.h | 7 +++++++ payloads/libpayload/libc/console.c | 10 +++++++++- src/mainboard/google/panther/devicetree.cb | 3 ++- src/southbridge/intel/lynxpoint/lpc.c | 1 + 5 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/payloads/libpayload/drivers/usb/usbhid.c b/payloads/libpayload/drivers/usb/usbhid.c index f14bda0..b8c04f1 100644 --- a/payloads/libpayload/drivers/usb/usbhid.c +++ b/payloads/libpayload/drivers/usb/usbhid.c @@ -391,7 +391,8 @@ usb_hid_set_protocol (usbdev_t *dev, interface_descriptor_t *interface, hid_prot
static struct console_input_driver cons = { .havekey = usbhid_havechar, - .getchar = usbhid_getchar + .getchar = usbhid_getchar, + .input_type = CONSOLE_INPUT_TYPE_USB, };
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h index 10a4505..14f8a38 100644 --- a/payloads/libpayload/include/libpayload.h +++ b/payloads/libpayload/include/libpayload.h @@ -247,12 +247,18 @@ int set_option_from_string(const struct nvram_accessor *nvram, struct cb_cmos_op * @defgroup console Console functions * @{ */ +typedef enum { + CONSOLE_INPUT_TYPE_UNKNOWN = 0, + CONSOLE_INPUT_TYPE_USB, +} console_input_type; + void console_init(void); int putchar(unsigned int c); int puts(const char *s); int havekey(void); int getchar(void); int getchar_timeout(int *ms); +console_input_type last_key_input_type(void);
extern int last_putchar;
@@ -261,6 +267,7 @@ struct console_input_driver { struct console_input_driver *next; int (*havekey) (void); int (*getchar) (void); + console_input_type input_type; };
struct console_output_driver; diff --git a/payloads/libpayload/libc/console.c b/payloads/libpayload/libc/console.c index fce6de4..54844db 100644 --- a/payloads/libpayload/libc/console.c +++ b/payloads/libpayload/libc/console.c @@ -33,6 +33,7 @@
struct console_output_driver *console_out; struct console_input_driver *console_in; +static console_input_type last_getchar_input_type;
void console_add_output_driver(struct console_output_driver *out) { @@ -115,8 +116,10 @@ int getchar(void) #endif struct console_input_driver *in; for (in = console_in; in != 0; in = in->next) - if (in->havechar()) + if (in->havechar()) { + last_getchar_input_type = in->input_type; return in->getchar(); + } } }
@@ -135,3 +138,8 @@ int getchar_timeout(int *ms)
return 0; } + +console_input_type last_key_input_type(void) +{ + return last_getchar_input_type; +} diff --git a/src/mainboard/google/panther/devicetree.cb b/src/mainboard/google/panther/devicetree.cb index 9fbe8e6..aa196a1 100644 --- a/src/mainboard/google/panther/devicetree.cb +++ b/src/mainboard/google/panther/devicetree.cb @@ -112,7 +112,8 @@ chip northbridge/intel/haswell io 0x60 = 0x700 io 0x62 = 0x710 irq 0x70 = 0x09 - irq 0xf4 = 0x20 + irq 0xf2 = 0x20 + irq 0xf4 = 0x0 irq 0xfa = 0x12 end device pnp 2e.7 on # GPIO diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c index 5d1bcdd..9df3750 100644 --- a/src/southbridge/intel/lynxpoint/lpc.c +++ b/src/southbridge/intel/lynxpoint/lpc.c @@ -195,6 +195,7 @@ static void pch_power_options(device_t dev) * If the option is not existent (Laptops), use Kconfig setting. */ get_option(&pwr_on, "power_on_after_fail"); + pwr_on = MAINBOARD_POWER_KEEP;
reg16 = pci_read_config16(dev, GEN_PMCON_3); reg16 &= 0xfffe;