From d237e9c7c00d131d808761d0fe7f44768598c074 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 9 Nov 2020 07:14:43 -0700 Subject: [PATCH] cros_ec: Correct collection of EC hash The EC now requires that the offset field be set correctly when checking on hash status. Update the code to handle this. Use the same message struct in both functions to reduce stack space. Signed-off-by: Simon Glass --- drivers/misc/cros_ec.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index c367490..1b22f18 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -495,18 +495,18 @@ int cros_ec_read_current_image(struct udevice *dev, } static int cros_ec_wait_on_hash_done(struct udevice *dev, + struct ec_params_vboot_hash *p, struct ec_response_vboot_hash *hash) { - struct ec_params_vboot_hash p; ulong start; start = get_timer(0); while (hash->status == EC_VBOOT_HASH_STATUS_BUSY) { mdelay(50); /* Insert some reasonable delay */ - p.cmd = EC_VBOOT_HASH_GET; - if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p), - hash, sizeof(*hash)) < 0) + p->cmd = EC_VBOOT_HASH_GET; + if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, p, sizeof(*p), hash, + sizeof(*hash)) < 0) return -1; if (get_timer(start) > CROS_EC_CMD_HASH_TIMEOUT_MS) { @@ -530,7 +530,7 @@ int cros_ec_read_hash(struct udevice *dev, uint hash_offset, return -1; /* If the EC is busy calculating the hash, fidget until it's done. */ - rv = cros_ec_wait_on_hash_done(dev, hash); + rv = cros_ec_wait_on_hash_done(dev, &p, hash); if (rv) return rv; @@ -553,9 +553,13 @@ int cros_ec_read_hash(struct udevice *dev, uint hash_offset, hash, sizeof(*hash)) < 0) return -1; - rv = cros_ec_wait_on_hash_done(dev, hash); + rv = cros_ec_wait_on_hash_done(dev, &p, hash); if (rv) return rv; + if (hash->status != EC_VBOOT_HASH_STATUS_DONE) { + log_err("Hash did not complete, status=%d\n", hash->status); + return -EIO; + } debug("%s: hash done\n", __func__); -- 2.7.4