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arch: arm: clear SPLIM registers before z_platform_init

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Allow z_platform_init to perform stack operations.

Signed-off-by: Håkon Øye Amundsen <haakon.amundsen@nordicsemi.no>
This commit is contained in:
Håkon Øye Amundsen 2020-11-23 10:07:31 +01:00 committed by Ioannis Glaropoulos
parent 7d07a4bee6
commit 2ce570b03f
1 changed files with 8 additions and 7 deletions
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15
arch/arm/core/aarch32/cortex_m/reset.S
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@ -69,7 +69,14 @@ SECTION_SUBSEC_FUNC(TEXT,_reset_section,__start)
movs.n r0, #0
msr CONTROL, r0
isb
#endif
#if defined(CONFIG_CPU_CORTEX_M_HAS_SPLIM)
/* Clear SPLIM registers */
movs.n r0, #0
msr MSPLIM, r0
msr PSPLIM, r0
#endif /* CONFIG_CPU_CORTEX_M_HAS_SPLIM */
#endif /* CONFIG_INIT_ARCH_HW_AT_BOOT */
#if defined(CONFIG_PLATFORM_SPECIFIC_INIT)
bl z_platform_init
@ -83,12 +90,6 @@ SECTION_SUBSEC_FUNC(TEXT,_reset_section,__start)
str r0, [r1]
dsb
#endif /* CONFIG_CPU_HAS_ARM_MPU */
#if defined(CONFIG_CPU_CORTEX_M_HAS_SPLIM)
/* Clear SPLIM registers */
movs.n r0, #0
msr MSPLIM, r0
msr PSPLIM, r0
#endif /* CONFIG_CPU_CORTEX_M_HAS_SPLIM */
ldr r0, =z_main_stack + CONFIG_MAIN_STACK_SIZE
msr msp, r0