diff options
| author | Dhruva Gole <d-gole@ti.com> | 2024-01-30 20:30:00 +0530 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-02-06 16:31:06 -0500 |
| commit | c59720c5f4c592688d2899b352f446703c968666 (patch) | |
| tree | 28bf6997a89ecee56bdc8062fe65216e18d58b32 /drivers/firmware | |
| parent | 0c4e36d65f6c25e5016235cc3f1e97c8d237f416 (diff) | |
firmware: ti_sci: Add comment explaining the is_secure code
Add a comment to explain the code under is_secure condition of
ti_sci_do_xfer. This will help avoid confusion amongst people who may in
future touch upon this code.
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/ti_sci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index b77ac36af28..ee092185588 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -239,6 +239,12 @@ static int ti_sci_do_xfer(struct ti_sci_info *info, struct ti_sci_secure_msg_hdr *secure_hdr = (struct ti_sci_secure_msg_hdr *)secure_buf; int ret; + /* + * The reason why we need the is_secure code is because of boot R5. + * boot R5 starts off in "secure mode" when it hands off from Boot + * ROM over to the Secondary bootloader. The initial set of calls + * we have to make need to be on a secure pipe. + */ if (info->is_secure) { /* ToDo: get checksum of the entire message */ secure_hdr->checksum = 0; |