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| author | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2017-11-17 11:48:55 +0000 |
|---|---|---|
| committer | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2017-12-06 14:12:41 +0000 |
| commit | 45d640f0f449e835b014bb5555ec1de5b5e566dc (patch) | |
| tree | 4323241396d3ad43e1ef20d76e34e3887e2ea7cb /include/lib | |
| parent | a852ec46055977c2cd811d5b54eb3044858fe2ee (diff) | |
SPM: Move S-EL1/S-EL0 xlat tables to TZC DRAM
A new platform define, `PLAT_SP_IMAGE_XLAT_SECTION_NAME`, has been
introduced to select the section where the translation tables used by
the S-EL1/S-EL0 are placed.
This define has been used to move the translation tables to DRAM secured
by TrustZone.
Most of the extra needed space in BL31 when SPM is enabled is due to the
large size of the translation tables. By moving them to this memory
region we can save 44 KiB.
A new argument has been added to REGISTER_XLAT_CONTEXT2() to specify the
region where the translation tables have to be placed by the linker.
Change-Id: Ia81709b4227cb8c92601f0caf258f624c0467719
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'include/lib')
| -rw-r--r-- | include/lib/xlat_tables/xlat_tables_v2.h | 19 | ||||
| -rw-r--r-- | include/lib/xlat_tables/xlat_tables_v2_helpers.h | 4 |
2 files changed, 15 insertions, 8 deletions
diff --git a/include/lib/xlat_tables/xlat_tables_v2.h b/include/lib/xlat_tables/xlat_tables_v2.h index 73a9c533..ba3e3603 100644 --- a/include/lib/xlat_tables/xlat_tables_v2.h +++ b/include/lib/xlat_tables/xlat_tables_v2.h @@ -168,21 +168,28 @@ typedef struct xlat_ctx xlat_ctx_t; _xlat_tables_count, \ _virt_addr_space_size, \ _phy_addr_space_size, \ - IMAGE_XLAT_DEFAULT_REGIME) + IMAGE_XLAT_DEFAULT_REGIME, \ + "xlat_table") /* - * Same as REGISTER_XLAT_CONTEXT plus the additional parameter _xlat_regime to - * specify the translation regime managed by this xlat_ctx_t instance. The - * values are the one from xlat_regime_t enumeration. + * Same as REGISTER_XLAT_CONTEXT plus the additional parameters: + * + * _xlat_regime: + * Specify the translation regime managed by this xlat_ctx_t instance. The + * values are the one from xlat_regime_t enumeration. + * + * _section_name: + * Specify the name of the section where the translation tables have to be + * placed by the linker. */ #define REGISTER_XLAT_CONTEXT2(_ctx_name, _mmap_count, _xlat_tables_count, \ _virt_addr_space_size, _phy_addr_space_size, \ - _xlat_regime) \ + _xlat_regime, _section_name) \ _REGISTER_XLAT_CONTEXT_FULL_SPEC(_ctx_name, _mmap_count, \ _xlat_tables_count, \ _virt_addr_space_size, \ _phy_addr_space_size, \ - _xlat_regime) + _xlat_regime, _section_name) /****************************************************************************** * Generic translation table APIs. diff --git a/include/lib/xlat_tables/xlat_tables_v2_helpers.h b/include/lib/xlat_tables/xlat_tables_v2_helpers.h index 96dee1a0..1be99b71 100644 --- a/include/lib/xlat_tables/xlat_tables_v2_helpers.h +++ b/include/lib/xlat_tables/xlat_tables_v2_helpers.h @@ -123,7 +123,7 @@ struct xlat_ctx { #define _REGISTER_XLAT_CONTEXT_FULL_SPEC(_ctx_name, _mmap_count, _xlat_tables_count, \ _virt_addr_space_size, _phy_addr_space_size, \ - _xlat_regime) \ + _xlat_regime, _section_name) \ CASSERT(CHECK_VIRT_ADDR_SPACE_SIZE(_virt_addr_space_size), \ assert_invalid_virtual_addr_space_size_for_##_ctx_name); \ \ @@ -134,7 +134,7 @@ struct xlat_ctx { \ static uint64_t _ctx_name##_xlat_tables[_xlat_tables_count] \ [XLAT_TABLE_ENTRIES] \ - __aligned(XLAT_TABLE_SIZE) __section("xlat_table"); \ + __aligned(XLAT_TABLE_SIZE) __section(_section_name); \ \ static uint64_t _ctx_name##_base_xlat_table \ [GET_NUM_BASE_LEVEL_ENTRIES(_virt_addr_space_size)] \ |