export RK_PA3

hc

2024-02-19 151fecfb72a0d602dfe79790602ef64b4e241574

 kernel/include/uapi/linux/tee.h
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@@ -51,11 +51,15 @@
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 #define TEE_GEN_CAP_GP		(1 << 0)/* GlobalPlatform compliant TEE */
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 #define TEE_GEN_CAP_PRIVILEGED	(1 << 1)/* Privileged device (for supplicant) */
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 #define TEE_GEN_CAP_REG_MEM	(1 << 2)/* Supports registering shared memory */
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+#define TEE_GEN_CAP_MEMREF_NULL	(1 << 3)/* NULL MemRef support */
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+
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+#define TEE_MEMREF_NULL		(__u64)(-1) /* NULL MemRef Buffer */
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 /*
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  * TEE Implementation ID
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  */
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 #define TEE_IMPL_ID_OPTEE	1
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+#define TEE_IMPL_ID_AMDTEE	2
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 /*
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  * OP-TEE specific capabilities
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@@ -172,6 +176,15 @@
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 #define TEE_IOCTL_LOGIN_APPLICATION		4
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 #define TEE_IOCTL_LOGIN_USER_APPLICATION	5
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 #define TEE_IOCTL_LOGIN_GROUP_APPLICATION	6
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+/*
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+ * Disallow user-space to use GP implementation specific login
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+ * method range (0x80000000 - 0xBFFFFFFF). This range is rather
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+ * being reserved for REE kernel clients or TEE implementation.
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+ */
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+#define TEE_IOCTL_LOGIN_REE_KERNEL_MIN		0x80000000
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+#define TEE_IOCTL_LOGIN_REE_KERNEL_MAX		0xBFFFFFFF
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+/* Private login method for REE kernel clients */
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+#define TEE_IOCTL_LOGIN_REE_KERNEL		0x80000000
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 /**
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  * struct tee_ioctl_param - parameter
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@@ -190,6 +203,16 @@
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  * a part of a shared memory by specifying an offset (@a) and size (@b) of
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  * the object. To supply the entire shared memory object set the offset
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  * (@a) to 0 and size (@b) to the previously returned size of the object.
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+ *
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+ * A client may need to present a NULL pointer in the argument
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+ * passed to a trusted application in the TEE.
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+ * This is also a requirement in GlobalPlatform Client API v1.0c
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+ * (section 3.2.5 memory references), which can be found at
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+ * http://www.globalplatform.org/specificationsdevice.asp
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+ *
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+ * If a NULL pointer is passed to a TA in the TEE, the (@c)
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+ * IOCTL parameters value must be set to TEE_MEMREF_NULL indicating a NULL
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+ * memory reference.
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  */
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 struct tee_ioctl_param {
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 	__u64 attr;