samus: add host commands for flashing zinger RW

This adds a new host commmand for sending RW updates to PD devices.
The host command has a variety of sub-commands for performing the
update, including: erase RW, reboot, write new hash, write flash.

To program zinger RW, you should send host commands in this order:
write new hash to all 0's
reboot (zinger boots into RO since RW hash doesn't match)
erase RW
write flash
write new hash to match contents of RW
reboot

This also adds an ectool command to write a new RW. Just pass it
the RW .flat or .bin file.

BUG=chrome-os-partner:31361
BRANCH=none
TEST=ectool --dev=1 --interface=lpc flashpd 0 0 zinger.RW.flat

Change-Id: Ia81615001b83ad7ee69b1af2bf1d7059177cde04
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/213239
Reviewed-by: Randall Spangler <rspangler@chromium.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/include/ec_commands.h b/include/ec_commands.h
index a8c9ab450b..83bca00c84 100644
--- a/include/ec_commands.h
+++ b/include/ec_commands.h
@@ -2528,6 +2528,26 @@ struct ec_params_usb_pd_control {
 	uint8_t mux;
 } __packed;
 
+/* Write USB-PD device FW */
+#define EC_CMD_USB_PD_FW_UPDATE 0x110
+
+enum usb_pd_fw_update_cmds {
+	USB_PD_FW_REBOOT,
+	USB_PD_FW_FLASH_ERASE,
+	USB_PD_FW_FLASH_WRITE,
+	USB_PD_FW_FLASH_HASH,
+};
+
+struct ec_params_usb_pd_fw_update {
+	uint8_t cmd;
+	uint8_t dev_id;
+	uint8_t port;
+	uint8_t reserved;  /* reserved */
+	uint32_t size;     /* Size to write in bytes */
+	/* Followed by data to write */
+} __packed;
+
+
 /*****************************************************************************/
 /*
  * Passthru commands