FF-A v1.1 adds a flag in the partition properties to indicate if the
partition runs in the AArch32 or AArch64 execution state. Use the same
to set-up the 32-bit execution flag mode in the ffa_dev automatically
if the detected firmware version is above v1.0 and ignore any requests
to do the same from the ffa_driver.
Link: https://lore.kernel.org/r/20220907145240.1683088-10-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
return 0;
}
-static void ffa_mode_32bit_set(struct ffa_device *dev)
+static void _ffa_mode_32bit_set(struct ffa_device *dev)
{
dev->mode_32bit = true;
}
+static void ffa_mode_32bit_set(struct ffa_device *dev)
+{
+ if (drv_info->version > FFA_VERSION_1_0)
+ return;
+
+ _ffa_mode_32bit_set(dev);
+}
+
static int ffa_sync_send_receive(struct ffa_device *dev,
struct ffa_send_direct_data *data)
{
__func__, tpbuf->id);
continue;
}
+
+ if (drv_info->version > FFA_VERSION_1_0 &&
+ !(tpbuf->properties & FFA_PARTITION_AARCH64_EXEC))
+ _ffa_mode_32bit_set(ffa_dev);
}
kfree(pbuf);
}
#define FFA_PARTITION_DIRECT_SEND BIT(1)
/* partition can send and receive indirect messages. */
#define FFA_PARTITION_INDIRECT_MSG BIT(2)
+/* partition runs in the AArch64 execution state. */
+#define FFA_PARTITION_AARCH64_EXEC BIT(8)
u32 properties;
u32 uuid[4];
};