[U-Boot] [PATCH 14/21] cros_ec: Adjust to use v1 vboot context only

[Simon Glass]

At present there are no users of the 64-byte v2 context. The v1 context is
only 16 bytes long and currently an error is raised if too much data is
returned from the EC.

Update the code to limit the size to 16 bytes.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 drivers/misc/cros_ec_sandbox.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c
index 429f1a9b269..4fcb2d96f51 100644
--- a/drivers/misc/cros_ec_sandbox.c
+++ b/drivers/misc/cros_ec_sandbox.c
@@ -313,13 +313,15 @@ static int process_cmd(struct ec_state *ec,
 
 		switch (req->op) {
 		case EC_VBNV_CONTEXT_OP_READ:
+			/* TODO(sjg at chromium.org): Support full-size context */
 			memcpy(resp->block, ec->vbnv_context,
-			       sizeof(resp->block));
-			len = sizeof(*resp);
+			       EC_VBNV_BLOCK_SIZE);
+			len = 16;
 			break;
 		case EC_VBNV_CONTEXT_OP_WRITE:
-			memcpy(ec->vbnv_context, resp->block,
-			       sizeof(resp->block));
+			/* TODO(sjg at chromium.org): Support full-size context */
+			memcpy(ec->vbnv_context, req->block,
+			       EC_VBNV_BLOCK_SIZE);
 			len = 0;
 			break;
 		default:
-- 
2.20.0.rc0.387.gc7a69e6b6c-goog