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| author | Dhruva Gole <d-gole@ti.com> | 2024-01-30 20:29:59 +0530 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-02-06 16:31:06 -0500 |
| commit | 0c4e36d65f6c25e5016235cc3f1e97c8d237f416 (patch) | |
| tree | bdd462165b9f66fe4f10d6a7126b80ffe3e2549a /drivers | |
| parent | 94cfc6fc96d2e718026d6aed9471994489a192f0 (diff) | |
| download | u-boot-0c4e36d65f6c25e5016235cc3f1e97c8d237f416.zip u-boot-0c4e36d65f6c25e5016235cc3f1e97c8d237f416.tar.gz u-boot-0c4e36d65f6c25e5016235cc3f1e97c8d237f416.tar.bz2 | |
firmware: ti_sci: fix the secure_hdr in do_xfer
The ti_sci driver in U-Boot has support for secure_msg as part of it's
do_xfer function. This let's U-boot send secure messages during boot up.
The protocol to send such secure messages is described as part of the
struct ti_sci_secure_msg_hdr. As part of this, there are 2 fields for
checksum and reserved that occupy the first 4 bytes of any secure
message. This is called as the secure_hdr.
As of now, the secure_hdr needs to be 0 init-ed before sending secure
messages. However the existing code was never putting the zero-inited vars
into the secure_buf, leading to possibility of the first 4 bytes of
secure_buf being possibly garbage.
Fix this by initialising the secure_hdr itself to the secure_buf
location, thus when we make secure_hdr members 0, it automatically ensures
the first 4 bytes of secure_buf are 0.
Fixes: 32cd25128bd849 ("firmware: Add basic support for TI System Control Interface (TI SCI)")
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/ti_sci.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index 6e9f93e..b77ac36 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -236,21 +236,21 @@ static int ti_sci_do_xfer(struct ti_sci_info *info, { struct k3_sec_proxy_msg *msg = &xfer->tx_message; u8 secure_buf[info->desc->max_msg_size]; - struct ti_sci_secure_msg_hdr secure_hdr; + struct ti_sci_secure_msg_hdr *secure_hdr = (struct ti_sci_secure_msg_hdr *)secure_buf; int ret; if (info->is_secure) { /* ToDo: get checksum of the entire message */ - secure_hdr.checksum = 0; - secure_hdr.reserved = 0; - memcpy(&secure_buf[sizeof(secure_hdr)], xfer->tx_message.buf, + secure_hdr->checksum = 0; + secure_hdr->reserved = 0; + memcpy(&secure_buf[sizeof(*secure_hdr)], xfer->tx_message.buf, xfer->tx_message.len); xfer->tx_message.buf = (u32 *)secure_buf; - xfer->tx_message.len += sizeof(secure_hdr); + xfer->tx_message.len += sizeof(*secure_hdr); if (xfer->rx_len) - xfer->rx_len += sizeof(secure_hdr); + xfer->rx_len += sizeof(*secure_hdr); } /* Send the message */ |