diff options
Diffstat (limited to 'security/tf_driver/tf_comm.h')
| -rw-r--r-- | security/tf_driver/tf_comm.h | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/security/tf_driver/tf_comm.h b/security/tf_driver/tf_comm.h deleted file mode 100644 index 8921dc1d1be0..000000000000 --- a/security/tf_driver/tf_comm.h +++ /dev/null @@ -1,202 +0,0 @@ -/** - * Copyright (c) 2011 Trusted Logic S.A. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#ifndef __TF_COMM_H__ -#define __TF_COMM_H__ - -#include "tf_defs.h" -#include "tf_protocol.h" - -/*---------------------------------------------------------------------------- - * Misc - *----------------------------------------------------------------------------*/ - -void tf_set_current_time(struct tf_comm *comm); - -/* - * Atomic accesses to 32-bit variables in the L1 Shared buffer - */ -static inline u32 tf_read_reg32(const u32 *comm_buffer) -{ - u32 result; - - __asm__ __volatile__("@ tf_read_reg32\n" - "ldrex %0, [%1]\n" - : "=&r" (result) - : "r" (comm_buffer) - ); - - return result; -} - -static inline void tf_write_reg32(void *comm_buffer, u32 value) -{ - u32 tmp; - - __asm__ __volatile__("@ tf_write_reg32\n" - "1: ldrex %0, [%2]\n" - " strex %0, %1, [%2]\n" - " teq %0, #0\n" - " bne 1b" - : "=&r" (tmp) - : "r" (value), "r" (comm_buffer) - : "cc" - ); -} - -/* - * Atomic accesses to 64-bit variables in the L1 Shared buffer - */ -static inline u64 tf_read_reg64(void *comm_buffer) -{ - u64 result; - - __asm__ __volatile__("@ tf_read_reg64\n" - "ldrexd %0, [%1]\n" - : "=&r" (result) - : "r" (comm_buffer) - ); - - return result; -} - -static inline void tf_write_reg64(void *comm_buffer, u64 value) -{ - u64 tmp; - - __asm__ __volatile__("@ tf_write_reg64\n" - "1: ldrexd %0, [%2]\n" - " strexd %0, %1, [%2]\n" - " teq %0, #0\n" - " bne 1b" - : "=&r" (tmp) - : "r" (value), "r" (comm_buffer) - : "cc" - ); -} - -/*---------------------------------------------------------------------------- - * SMC operations - *----------------------------------------------------------------------------*/ - -/* RPC return values */ -#define RPC_NO 0x00 /* No RPC to execute */ -#define RPC_YIELD 0x01 /* Yield RPC */ -#define RPC_NON_YIELD 0x02 /* non-Yield RPC */ - -int tf_rpc_execute(struct tf_comm *comm); - -/*---------------------------------------------------------------------------- - * Shared memory related operations - *----------------------------------------------------------------------------*/ - -#define L1_DESCRIPTOR_FAULT (0x00000000) -#define L2_DESCRIPTOR_FAULT (0x00000000) - -#define L2_DESCRIPTOR_ADDR_MASK (0xFFFFF000) - -#define DESCRIPTOR_V13_12_MASK (0x3 << PAGE_SHIFT) -#define DESCRIPTOR_V13_12_GET(a) ((a & DESCRIPTOR_V13_12_MASK) >> PAGE_SHIFT) - -struct tf_coarse_page_table *tf_alloc_coarse_page_table( - struct tf_coarse_page_table_allocation_context *alloc_context, - u32 type); - -void tf_free_coarse_page_table( - struct tf_coarse_page_table_allocation_context *alloc_context, - struct tf_coarse_page_table *coarse_pg_table, - int force); - -void tf_init_coarse_page_table_allocator( - struct tf_coarse_page_table_allocation_context *alloc_context); - -void tf_release_coarse_page_table_allocator( - struct tf_coarse_page_table_allocation_context *alloc_context); - -struct page *tf_l2_page_descriptor_to_page(u32 l2_page_descriptor); - -u32 tf_get_l2_descriptor_common(u32 vaddr, struct mm_struct *mm); - -void tf_cleanup_shared_memory( - struct tf_coarse_page_table_allocation_context *alloc_context, - struct tf_shmem_desc *shmem_desc, - u32 full_cleanup); - -int tf_fill_descriptor_table( - struct tf_coarse_page_table_allocation_context *alloc_context, - struct tf_shmem_desc *shmem_desc, - u32 buffer, - struct vm_area_struct **vmas, - u32 descriptors[TF_MAX_COARSE_PAGES], - u32 buffer_size, - u32 *buffer_start_offset, - bool in_user_space, - u32 flags, - u32 *descriptor_count); - -/*---------------------------------------------------------------------------- - * Standard communication operations - *----------------------------------------------------------------------------*/ - -int tf_schedule_secure_world(struct tf_comm *comm); - -int tf_send_receive( - struct tf_comm *comm, - union tf_command *command, - union tf_answer *answer, - struct tf_connection *connection, - bool bKillable); - - -/** - * get a pointer to the secure world description. - * This points directly into the L1 shared buffer - * and is valid only once the communication has - * been initialized - **/ -u8 *tf_get_description(struct tf_comm *comm); - -/*---------------------------------------------------------------------------- - * Power management - *----------------------------------------------------------------------------*/ - -enum TF_POWER_OPERATION { - TF_POWER_OPERATION_HIBERNATE = 1, - TF_POWER_OPERATION_SHUTDOWN = 2, - TF_POWER_OPERATION_RESUME = 3, -}; - -int tf_pm_hibernate(struct tf_comm *comm); -int tf_pm_resume(struct tf_comm *comm); -int tf_pm_shutdown(struct tf_comm *comm); - -int tf_power_management(struct tf_comm *comm, - enum TF_POWER_OPERATION operation); - - -/*---------------------------------------------------------------------------- - * Communication initialization and termination - *----------------------------------------------------------------------------*/ - -int tf_init(struct tf_comm *comm); - -void tf_terminate(struct tf_comm *comm); - - -#endif /* __TF_COMM_H__ */ |