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security/vboot: Drop CAR_GLOBAL_MIGRATION support 

Change-Id: I9dee03da028b9111b685e325368815a86e444a47
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37028
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Arthur Heymans 2019-11-20 19:47:10 +01:00 committed by Patrick Georgi
parent 7255610d9f
commit 344e86bb3b
5 changed files with 26 additions and 50 deletions
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17
src/security/vboot/common.c
View File

@ -25,7 +25,7 @@
#include <security/vboot/symbols.h>
#include <security/vboot/vboot_common.h>
static struct vb2_context *vboot_ctx CAR_GLOBAL;
static struct vb2_context *vboot_ctx;
struct vboot_working_data *vboot_get_working_data(void)
{
@ -50,20 +50,19 @@ static inline void *vboot_get_workbuf(struct vboot_working_data *wd)
struct vb2_context *vboot_get_context(void)
{
struct vb2_context **vboot_ctx_ptr = car_get_var_ptr(&vboot_ctx);
struct vboot_working_data *wd;
/* Return if context has already been initialized/restored. */
if (*vboot_ctx_ptr)
return *vboot_ctx_ptr;
if (vboot_ctx)
return vboot_ctx;
wd = vboot_get_working_data();
/* Restore context from a previous stage. */
if (vboot_logic_executed()) {
assert(vb2api_reinit(vboot_get_workbuf(wd),
vboot_ctx_ptr) == VB2_SUCCESS);
return *vboot_ctx_ptr;
&vboot_ctx) == VB2_SUCCESS);
return vboot_ctx;
}
assert(verification_should_run());
@ -79,9 +78,9 @@ struct vb2_context *vboot_get_context(void)
assert(vb2api_init(vboot_get_workbuf(wd),
VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE -
wd->buffer_offset,
vboot_ctx_ptr) == VB2_SUCCESS);
&vboot_ctx) == VB2_SUCCESS);
return *vboot_ctx_ptr;
return vboot_ctx;
}
int vboot_locate_firmware(const struct vb2_context *ctx,
@ -116,7 +115,7 @@ static void vboot_migrate_cbmem(int unused)
vb2api_relocate(vboot_get_workbuf(wd_cbmem),
vboot_get_workbuf(wd_preram),
cbmem_size - wd_cbmem->buffer_offset,
car_get_var_ptr(&vboot_ctx));
&vboot_ctx);
}
ROMSTAGE_CBMEM_INIT_HOOK(vboot_migrate_cbmem)
#else

3
src/security/vboot/misc.h
View File

@ -17,7 +17,6 @@
#define __VBOOT_MISC_H__
#include <assert.h>
#include <arch/early_variables.h>
#include <security/vboot/vboot_common.h>
struct vb2_context;
@ -112,7 +111,7 @@ static inline int vboot_logic_executed(void)
need to check a global to see if verfication has run. */
if (verification_should_run() ||
(verstage_should_load() && CONFIG(VBOOT_RETURN_FROM_VERSTAGE)))
return car_get_var(vboot_executed);
return vboot_executed;
if (CONFIG(VBOOT_STARTS_IN_BOOTBLOCK)) {
/* All other stages are "after the bootblock" */

35
src/security/vboot/vbnv.c
View File

@ -13,32 +13,13 @@
* GNU General Public License for more details.
*/
#include <arch/early_variables.h>
#include <string.h>
#include <types.h>
#include <security/vboot/vbnv.h>
#include <security/vboot/vbnv_layout.h>
static int vbnv_initialized CAR_GLOBAL;
static uint8_t vbnv[VBOOT_VBNV_BLOCK_SIZE] CAR_GLOBAL;
/* Wrappers for accessing the variables marked as CAR_GLOBAL. */
static inline int is_vbnv_initialized(void)
{
return car_get_var(vbnv_initialized);
}
static inline uint8_t *vbnv_data_addr(int index)
{
uint8_t *vbnv_arr = car_get_var_ptr(vbnv);
return &vbnv_arr[index];
}
static inline uint8_t vbnv_data(int index)
{
return *vbnv_data_addr(index);
}
static int vbnv_initialized;
static uint8_t vbnv[VBOOT_VBNV_BLOCK_SIZE];
/* Return CRC-8 of the data, using x^8 + x^2 + x + 1 polynomial. */
static uint8_t crc8_vbnv(const uint8_t *data, int len)
@ -66,9 +47,9 @@ void vbnv_reset(uint8_t *vbnv_copy)
/* Read VBNV data into cache. */
static void vbnv_setup(void)
{
if (!is_vbnv_initialized()) {
read_vbnv(vbnv_data_addr(0));
car_set_var(vbnv_initialized, 1);
if (!vbnv_initialized) {
read_vbnv(vbnv);
vbnv_initialized = 1;
}
}
@ -117,7 +98,7 @@ void save_vbnv(const uint8_t *vbnv_copy)
save_vbnv_flash(vbnv_copy);
/* Clear initialized flag to force cached data to be updated */
car_set_var(vbnv_initialized, 0);
vbnv_initialized = 0;
}
/* Save a recovery reason into VBNV. */
@ -137,14 +118,14 @@ void set_recovery_mode_into_vbnv(int recovery_reason)
int get_recovery_mode_from_vbnv(void)
{
vbnv_setup();
return vbnv_data(RECOVERY_OFFSET);
return vbnv[RECOVERY_OFFSET];
}
/* Read the USB Device Controller(UDC) enable flag from VBNV. */
int vbnv_udc_enable_flag(void)
{
vbnv_setup();
return (vbnv_data(DEV_FLAGS_OFFSET) & DEV_ENABLE_UDC) ? 1 : 0;
return (vbnv[DEV_FLAGS_OFFSET] & DEV_ENABLE_UDC) ? 1 : 0;
}
void vbnv_init(uint8_t *vbnv_copy)

11
src/security/vboot/vbnv_flash.c
View File

@ -13,7 +13,6 @@
* GNU General Public License for more details.
*/
#include <arch/early_variables.h>
#include <commonlib/region.h>
#include <console/console.h>
#include <fmap.h>
@ -41,7 +40,7 @@ struct vbnv_flash_ctx {
/* Cache of the current nvdata */
uint8_t cache[BLOB_SIZE];
};
static struct vbnv_flash_ctx vbnv_flash CAR_GLOBAL;
static struct vbnv_flash_ctx vbnv_flash;
/*
* This code assumes that flash is erased to 1-bits, and write operations can
@ -60,7 +59,7 @@ static inline int can_overwrite(uint8_t current, uint8_t new)
static int init_vbnv(void)
{
struct vbnv_flash_ctx *ctx = car_get_var_ptr(&vbnv_flash);
struct vbnv_flash_ctx *ctx = &vbnv_flash;
struct region_device *rdev = &ctx->vbnv_dev;
uint8_t buf[BLOB_SIZE];
uint8_t empty_blob[BLOB_SIZE];
@ -116,7 +115,7 @@ static int init_vbnv(void)
static int erase_nvram(void)
{
struct vbnv_flash_ctx *ctx = car_get_var_ptr(&vbnv_flash);
struct vbnv_flash_ctx *ctx = &vbnv_flash;
const struct region_device *rdev = &ctx->vbnv_dev;
if (rdev_eraseat(rdev, 0, region_device_sz(rdev)) < 0) {
@ -130,7 +129,7 @@ static int erase_nvram(void)
void read_vbnv_flash(uint8_t *vbnv_copy)
{
struct vbnv_flash_ctx *ctx = car_get_var_ptr(&vbnv_flash);
struct vbnv_flash_ctx *ctx = &vbnv_flash;
if (!ctx->initialized)
if (init_vbnv())
@ -141,7 +140,7 @@ void read_vbnv_flash(uint8_t *vbnv_copy)
void save_vbnv_flash(const uint8_t *vbnv_copy)
{
struct vbnv_flash_ctx *ctx = car_get_var_ptr(&vbnv_flash);
struct vbnv_flash_ctx *ctx = &vbnv_flash;
int new_offset;
int i;
const struct region_device *rdev = &ctx->vbnv_dev;

8
src/security/vboot/vboot_loader.c
View File

@ -13,8 +13,6 @@
* GNU General Public License for more details.
*/
#include <arch/early_variables.h>
#include <boot_device.h>
#include <cbfs.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
@ -34,14 +32,14 @@ _Static_assert(!CONFIG(VBOOT_RETURN_FROM_VERSTAGE) ||
CONFIG(VBOOT_SEPARATE_VERSTAGE),
"return from verstage only makes sense for separate verstages");
int vboot_executed CAR_GLOBAL;
int vboot_executed;
void vboot_run_logic(void)
{
if (verification_should_run()) {
/* Note: this path is not used for VBOOT_RETURN_FROM_VERSTAGE */
verstage_main();
car_set_var(vboot_executed, 1);
vboot_executed = 1;
} else if (verstage_should_load()) {
struct cbfsf file;
struct prog verstage =
@ -68,7 +66,7 @@ void vboot_run_logic(void)
if (!CONFIG(VBOOT_RETURN_FROM_VERSTAGE))
return;
car_set_var(vboot_executed, 1);
vboot_executed = 1;
}
}