core: user_ta: support mapping paged parameters

Supports mapping shared paged parameters for user TA.

vm_map() is modified to map objects with the TEE_MATTR_EPHEMERAL
attribute which is an indicati

core: user_ta: support mapping paged parameters

Supports mapping shared paged parameters for user TA.

vm_map() is modified to map objects with the TEE_MATTR_EPHEMERAL
attribute which is an indication that it's a parameter instead of TA
code/data or permanent mapping.

tee_mmu_clean_param() is added to clean out all parameters added with
tee_mmu_map_param().

In tee_mmu_map_param() instead of clearing out any old parameters
there's a check to see that there's no old parameters hanging around.

Finally mobj_update_mapping() is removed since the pager now supports
shared mappings.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: pager: record fobj in pmem instead of area

Records the fobj backing the physical page represented by a pmem instead
of struct tee_pager_area which was used prior to this patch. Each fobj
can

core: pager: record fobj in pmem instead of area

Records the fobj backing the physical page represented by a pmem instead
of struct tee_pager_area which was used prior to this patch. Each fobj
can be used by several unrelated areas in the end allowing real shared
memory between multiple user context.

Reference counting for the page tables is increasing in activity since
entries which are hidden/unhidden also decrease/increase the count. This
is because there's no difference between unhiding a pmem or just mapping
it again in another page table.

The memory sharing is not fully taken advantage of in this patch.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: remove TEE_MATTR_HIDDEN_*

Removes the now unused TEE_MATTR_HIDDEN_BLOCK and
TEE_MATTR_HIDDEN_DIRTY_BLOCK.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wikla

core: remove TEE_MATTR_HIDDEN_*

Removes the now unused TEE_MATTR_HIDDEN_BLOCK and
TEE_MATTR_HIDDEN_DIRTY_BLOCK.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add fobj_sec_mem_alloc()

Adds fobj_sec_mem_alloc() which allocates physical memory from
tee_mm_sec_ddr, to be used as TA memory.

Support is added in the MOBJ of with_fobj type to handle this

core: add fobj_sec_mem_alloc()

Adds fobj_sec_mem_alloc() which allocates physical memory from
tee_mm_sec_ddr, to be used as TA memory.

Support is added in the MOBJ of with_fobj type to handle this
new kind of fobj.

A fobj_ta_mem_alloc() macro is added to use either fobj_rw_paged_alloc()
if paging of user TAs is enabled or else to use fobj_sec_mem_alloc()
instead.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add a file object interface

Adds a file object interface which is an abstraction of the storage part
in a struct tee_pager_area. This adds no new features, just moves some code
from tee_pager.

core: add a file object interface

Adds a file object interface which is an abstraction of the storage part
in a struct tee_pager_area. This adds no new features, just moves some code
from tee_pager.c into fobj.c.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: introduce CFG_CORE_RESERVED_SHM

Introduces CFG_CORE_RESERVED_SHM which if set to y enables reserved shared
memory, else disables support for reserved shared memory.

Reviewed-by: Etienne Carri

core: introduce CFG_CORE_RESERVED_SHM

Introduces CFG_CORE_RESERVED_SHM which if set to y enables reserved shared
memory, else disables support for reserved shared memory.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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tee_mm: add TEE_MM_POOL_NEX_MALLOC flag

This flag tells tee_mm to use nex_malloc pool instead of default malloc

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander

tee_mm: add TEE_MM_POOL_NEX_MALLOC flag

This flag tells tee_mm to use nex_malloc pool instead of default malloc

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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Remove license notice from STMicroelectronics files

Since a while the source files license info are defined by SPDX
identifiers. We can safely remove the verbose license text from the
files that are

Remove license notice from STMicroelectronics files

Since a while the source files license info are defined by SPDX
identifiers. We can safely remove the verbose license text from the
files that are owned by either only STMicroelectronics or only both
Linaro and STMicroelectronics.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: remove vm_info_get_user_range()

Removes the now unused function vm_info_get_user_range().

Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (b2260/pager/GP)
Reviewed-by: Etienne Carri

core: remove vm_info_get_user_range()

Removes the now unused function vm_info_get_user_range().

Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (b2260/pager/GP)
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: remove tee_mmu_map_init()

Removes tee_mmu_map_init() and adds the map_kinit() call to
vm_info_init().

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <j

core: remove tee_mmu_map_init()

Removes tee_mmu_map_init() and adds the map_kinit() call to
vm_info_init().

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add vm_set_prot()

Adds vm_set_prot() to update the protection bits of an already registered
region.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <

core: add vm_set_prot()

Adds vm_set_prot() to update the protection bits of an already registered
region.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: more flexible ta mapping

Replaces the current fixed array of TA map entries where some indexes
have a special meaning. The new structures and functions dealing with this
has a vm_ prefix inste

core: more flexible ta mapping

Replaces the current fixed array of TA map entries where some indexes
have a special meaning. The new structures and functions dealing with this
has a vm_ prefix instead of the old tee_mmu_ prefix.

struct tee_ta_region is replaced by struct vm_region, which is now
stored in a linked list using the new TEE_MATTR-bits to identify special
regions.

struct tee_mmu_info is replaced by vm_info, which now keeps the head of
the linked list of regions.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add new TEE_MATTR defines

Adds TEE_MATTR_EPHEMERAL to tag TA mappings which are only used during a
single call (open session or invoke parameters).

Adds TEE_MATTR_PERMANENT to tag TA mappings

core: add new TEE_MATTR defines

Adds TEE_MATTR_EPHEMERAL to tag TA mappings which are only used during a
single call (open session or invoke parameters).

Adds TEE_MATTR_PERMANENT to tag TA mappings that must not be removed
(kernel mappings while in user mode).

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: tee_mmu_types.h: define TEE_MATTR_* with BIT

Uses the BIT() macro to define the TEE_MATTR_* macros.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <

core: tee_mmu_types.h: define TEE_MATTR_* with BIT

Uses the BIT() macro to define the TEE_MATTR_* macros.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: tee_mmu_add_rwmem(): remove pgdir_offset

Removes the pgdir_offset parameter from the tee_mmu_add_rwmem(). The
function is only called from one place and then with pgdir_offset as -1.

Reviewed

core: tee_mmu_add_rwmem(): remove pgdir_offset

Removes the pgdir_offset parameter from the tee_mmu_add_rwmem(). The
function is only called from one place and then with pgdir_offset as -1.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] wa

Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] was used to double check the license matching
code in the Python script. All the licenses detected by scancode are
either detected by spdxify.py, or have no SPDX identifier, or are false
matches.

Link: [1] https://spdx.org/licenses/
Link: [2] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Link: [3] https://github.com/nexB/scancode-toolkit
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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core: rename mattr_uflags_to_str()

Renames mattr_uflags_to_str() to mattr_perm_to_str() and report all
permission bits using a 7 bytes long string instead.

This allows observing the permissions of

core: rename mattr_uflags_to_str()

Renames mattr_uflags_to_str() to mattr_perm_to_str() and report all
permission bits using a 7 bytes long string instead.

This allows observing the permissions of the minimal kernel mapping
added to the user space context.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Andrew Davis <andrew.davis@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: mm: add kernel mapping to user map

Adds a minimal kernel mapping needed when user mapping is active.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Andrew Davis <andrew

core: mm: add kernel mapping to user map

Adds a minimal kernel mapping needed when user mapping is active.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Andrew Davis <andrew.davis@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: refactor ASID management

Refactors Address Space Identifier management. The field in struct
user_ta_ctx is moved into struct tee_mmu_info and renamed to asid.

Allocation refactored internally

core: refactor ASID management

Refactors Address Space Identifier management. The field in struct
user_ta_ctx is moved into struct tee_mmu_info and renamed to asid.

Allocation refactored internally with asid_alloc() and asid_free()
functions, based on bitstring.h macros.

ASIDs starts at 2, and is always an even number.

ASIDs with the lowest bit set is reserved for as the second ASID when
using ASIDs in pairs.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Andrew Davis <andrew.davis@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: print rwx flags for each MMU region when a user TA aborts

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

mobj: add mobj_reg_shm and mobj_mapped_shm

mobj_reg_shm represents registered shared memory. This is basically
a list of pages provided by normal world. It can be used to pass
memory parameters to T

mobj: add mobj_reg_shm and mobj_mapped_shm

mobj_reg_shm represents registered shared memory. This is basically
a list of pages provided by normal world. It can be used to pass
memory parameters to TAs.

mobj_mapped_shm is built on top of mobj_reg_shm. It is almost
the same thing, but it is mapped to OP-TEE virtual address space,
so OP-TEE kernel can access such buffers.

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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tee_mm: add locking while working with pool->entry

This fixes race condition in linked list handling.

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander <jens.wik

tee_mm: add locking while working with pool->entry

This fixes race condition in linked list handling.

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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