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board/ctrl: add BOARDCTL_UNIQUEKEY support

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Add unique key to support get trusted data from the trusted field

Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2021-07-07 17:06:33 +08:00 committed by Alan Carvalho de Assis
parent d4ce70979e
commit 441b03c61c
4 changed files with 60 additions and 0 deletions
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16
boards/Kconfig
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@ -3373,6 +3373,22 @@ config BOARDCTL_UNIQUEID_SIZE
Provides the size of the memory buffer that must be provided by the
caller of board_uniqueid() in which to receive the board unique ID.
config BOARDCTL_UNIQUEKEY
bool "Return board unique KEY"
default n
---help---
Enables support for the BOARDIOC_UNIQUEKEY boardctl() command.
Architecture specific logic must provide the board_uniquekey()
interface.
config BOARDCTL_UNIQUEKEY_SIZE
int "Size of the board unique KEY (bytes)"
default 16
depends on BOARDCTL_UNIQUEKEY
---help---
Provides the size of the memory buffer that must be provided by the
caller of board_uniquekey() in which to receive the board unique KEY.
config BOARDCTL_MKRD
bool "Enable application space creation of RAM disks"
default n

18
boards/boardctl.c
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@ -418,6 +418,24 @@ int boardctl(unsigned int cmd, uintptr_t arg)
break;
#endif
#ifdef CONFIG_BOARDCTL_UNIQUEKEY
/* CMD: BOARDIOC_UNIQUEKEY
* DESCRIPTION: Return a unique KEY associated with the board (such
* as a trusted key or a private identity).
* ARG: A writable array of size
* CONFIG_BOARDCTL_UNIQUEKEY_SIZE in which to receive
* the board unique KEY.
* DEPENDENCIES: Board logic must provide the board_uniquekey()
* interface.
*/
case BOARDIOC_UNIQUEKEY:
{
ret = board_uniquekey((FAR uint8_t *)arg);
}
break;
#endif
#ifdef CONFIG_BOARDCTL_MKRD
/* CMD: BOARDIOC_MKRD
* DESCRIPTION: Create a RAM disk

25
include/nuttx/board.h
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@ -285,6 +285,31 @@ int board_reset(int status);
int board_uniqueid(FAR uint8_t *uniqueid);
#endif
/****************************************************************************
* Name: board_uniquekey
*
* Description:
* Return a unique KEY associated with the board. The meaning of this
* unique KEY is not specified. It may be a trusted key or a private
* identity, etc. The only requirement is that the length of the
* unique KEY be exactly CONFIG_BOARDCTL_UNIQUEKEY_SIZE in length.
*
* Input Parameters:
* uniquekey - A reference to a writable memory location provided by the
* caller to receive the board unique KEY. The memory memory referenced
* by this pointer must be at least CONFIG_BOARDCTL_UNIQUEKEY_SIZE in
* length.
*
* Returned Value:
* Zero (OK) is returned on success. Otherwise a negated errno value is
* returned indicating the nature of the failure.
*
****************************************************************************/
#ifdef CONFIG_BOARDCTL_UNIQUEKEY
int board_uniquekey(FAR uint8_t *uniquekey);
#endif
/****************************************************************************
* Name: board_timerhook
*

1
include/sys/boardctl.h
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@ -200,6 +200,7 @@
#define BOARDIOC_NXTERM _BOARDIOC(0x000f)
#define BOARDIOC_NXTERM_IOCTL _BOARDIOC(0x0010)
#define BOARDIOC_TESTSET _BOARDIOC(0x0011)
#define BOARDIOC_UNIQUEKEY _BOARDIOC(0x0012)
/* If CONFIG_BOARDCTL_IOCTL=y, then board-specific commands will be support.
* In this case, all commands not recognized by boardctl() will be forwarded