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-rw-r--r--src/include/cbmem.h2
-rw-r--r--src/vendorcode/google/chromeos/vboot2/Kconfig10
-rw-r--r--src/vendorcode/google/chromeos/vboot2/common.c14
3 files changed, 24 insertions, 2 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h
index c5cd52a80b..07e5645397 100644
--- a/src/include/cbmem.h
+++ b/src/include/cbmem.h
@@ -84,6 +84,7 @@
#define CBMEM_ID_STAGEx_CACHE 0x57a9e100
#define CBMEM_ID_TIMESTAMP 0x54494d45
#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
+#define CBMEM_ID_VBOOT_WORKBUF 0x78007343
#define CBMEM_ID_WIFI_CALIBRATION 0x57494649
#ifndef __ASSEMBLER__
@@ -128,6 +129,7 @@
{ CBMEM_ID_SPINTABLE, "SPIN TABLE " }, \
{ CBMEM_ID_TIMESTAMP, "TIME STAMP " }, \
{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " }, \
+ { CBMEM_ID_VBOOT_WORKBUF, "VBOOT WORK " }, \
{ CBMEM_ID_WIFI_CALIBRATION, "WIFI CLBR " },
struct cbmem_entry;
diff --git a/src/vendorcode/google/chromeos/vboot2/Kconfig b/src/vendorcode/google/chromeos/vboot2/Kconfig
index bb6c1add0a..a086785e3f 100644
--- a/src/vendorcode/google/chromeos/vboot2/Kconfig
+++ b/src/vendorcode/google/chromeos/vboot2/Kconfig
@@ -101,3 +101,13 @@ config VBOOT_BOOT_LOADER_INDEX
help
This is the index of the bootloader component in the verified
firmware block.
+
+config VBOOT_DYNAMIC_WORK_BUFFER
+ bool "Vboot's work buffer is dynamically allocated."
+ default n
+ depends on VBOOT_VERIFY_FIRMWARE
+ help
+ This option is used when there isn't enough pre-main memory
+ ram to allocate the vboot work buffer. That means vboot verification
+ is after memory init and requires main memory to back the work
+ buffer.
diff --git a/src/vendorcode/google/chromeos/vboot2/common.c b/src/vendorcode/google/chromeos/vboot2/common.c
index 289005c996..deb0c8816c 100644
--- a/src/vendorcode/google/chromeos/vboot2/common.c
+++ b/src/vendorcode/google/chromeos/vboot2/common.c
@@ -18,6 +18,7 @@
*/
#include <cbfs.h>
+#include <cbmem.h>
#include <console/console.h>
#include <reset.h>
#include "../chromeos.h"
@@ -25,14 +26,23 @@
#include "../vboot_handoff.h"
#include "misc.h"
+static const size_t vb_work_buf_size = 16 * KiB;
+
struct vb2_working_data * const vboot_get_working_data(void)
{
- return (struct vb2_working_data *)_vboot2_work;
+ if (IS_ENABLED(CONFIG_VBOOT_DYNAMIC_WORK_BUFFER))
+ /* cbmem_add() does a cbmem_find() first. */
+ return cbmem_add(CBMEM_ID_VBOOT_WORKBUF, vb_work_buf_size);
+ else
+ return (struct vb2_working_data *)_vboot2_work;
}
size_t vb2_working_data_size(void)
{
- return _vboot2_work_size;
+ if (IS_ENABLED(CONFIG_VBOOT_DYNAMIC_WORK_BUFFER))
+ return vb_work_buf_size;
+ else
+ return _vboot2_work_size;
}
void *vboot_get_work_buffer(struct vb2_working_data *wd)