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arch: arm: cortex-m: move the relay table section after vector table

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In CPUs with VTOR we are free to place the relay vector table
section anywhere inside ROM_START section (as long as we respect
alignment requirements). This PR moves the relay table towards
the end of ROM_START. This leaves sufficient area for placing
some SoC-specific sections inside ROM_START that need to start
at a fixed address.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2020-07-16 10:13:04 +02:00 • committed by Carles Cufí
commit b0c5e6335a
1 changed files with 14 additions and 2 deletions
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16
arch/arm/core/aarch32/cortex_m/CMakeLists.txt
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@ -13,11 +13,23 @@ zephyr_library_sources(
thread_abort.c
)
zephyr_linker_sources_ifdef(CONFIG_SW_VECTOR_RELAY
if (CONFIG_SW_VECTOR_RELAY)
if (CONFIG_CPU_CORTEX_M_HAS_VTOR)
set(relay_vector_table_sort_key relay_vectors)
else()
# Using 0x0 prefix will result in placing the relay vector table section
# at the beginning of ROM_START (i.e before other sections in ROM_START);
# required for CPUs without VTOR, which need to have the exception vector
# table starting at a fixed address at the beginning of ROM.
set(relay_vector_table_sort_key 0x0relay_vectors)
endif()
zephyr_linker_sources(
ROM_START
SORT_KEY 0x0relay_vectors
SORT_KEY ${relay_vector_table_sort_key}
relay_vector_table.ld
)
endif()
if (CONFIG_SW_VECTOR_RELAY OR CONFIG_SW_VECTOR_RELAY_CLIENT)
zephyr_linker_sources(