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Remove xlat_helpers.c

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lib/aarch64/xlat_helpers.c defines helper functions to build
translation descriptors, but no common code or upstream platform
port uses them. As the rest of the xlat_tables code evolves, there
may be conflicts with these helpers, therefore this code should be
removed.

Change-Id: I9f5be99720f929264818af33db8dada785368711
This commit is contained in:
Antonio Nino Diaz
2016-03-31 09:08:56 +01:00
parent 6b1ca8f358
commit f33fbb2f97
4 changed files with 6 additions and 143 deletions
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12
docs/porting-guide.md
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@@ -76,12 +76,12 @@ either mandatory or optional.
A platform port must enable the Memory Management Unit (MMU) as well as the
instruction and data caches for each BL stage. Setting up the translation
tables is the responsibility of the platform port because memory maps differ
across platforms. A memory translation library (see `lib/aarch64/xlat_helpers.c`
and `lib/aarch64/xlat_tables.c`) is provided to help in this setup. Note that
although this library supports non-identity mappings, this is intended only for
re-mapping peripheral physical addresses and allows platforms with high I/O
addresses to reduce their virtual address space. All other addresses
corresponding to code and data must currently use an identity mapping.
across platforms. A memory translation library (see `lib/aarch64/xlat_tables.c`)
is provided to help in this setup. Note that although this library supports
non-identity mappings, this is intended only for re-mapping peripheral physical
addresses and allows platforms with high I/O addresses to reduce their virtual
address space. All other addresses corresponding to code and data must currently
use an identity mapping.
In ARM standard platforms, each BL stage configures the MMU in the
platform-specific architecture setup function, `blX_plat_arch_setup()`, and uses