From 8fbbfd966efa67ef9aec37cb4ff412f9f26e1e84 Mon Sep 17 00:00:00 2001 From: Marek Behun Date: Sun, 31 Mar 2019 05:15:33 +0200 Subject: mailbox: Add support for Armada 37xx rWTM mailbox This adds support for the mailbox via which the kernel can communicate with the firmware running on the secure processor of the Armada 37xx SOC. The rWTM secure processor has access to internal eFuses and cryptographic circuits, such as the Entropy Bit Generator to generate true random numbers. Signed-off-by: Marek Behun Signed-off-by: Jassi Brar --- include/linux/armada-37xx-rwtm-mailbox.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 include/linux/armada-37xx-rwtm-mailbox.h (limited to 'include/linux') diff --git a/include/linux/armada-37xx-rwtm-mailbox.h b/include/linux/armada-37xx-rwtm-mailbox.h new file mode 100644 index 000000000000..57bb54f6767a --- /dev/null +++ b/include/linux/armada-37xx-rwtm-mailbox.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * rWTM BIU Mailbox driver for Armada 37xx + * + * Author: Marek Behun + */ + +#ifndef _LINUX_ARMADA_37XX_RWTM_MAILBOX_H_ +#define _LINUX_ARMADA_37XX_RWTM_MAILBOX_H_ + +#include + +struct armada_37xx_rwtm_tx_msg { + u16 command; + u32 args[16]; +}; + +struct armada_37xx_rwtm_rx_msg { + u32 retval; + u32 status[16]; +}; + +#endif /* _LINUX_ARMADA_37XX_RWTM_MAILBOX_H_ */ -- cgit v1.2.3-71-gd317