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arch: arm: core: aarch32: limit ACTLR register access to Cortex-R

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The configuration bits ATCMPCEN, B0TCMPCEN and B1TCMPCEN in the ACTLR
register referenced in the function z_arm_tcm_disable_ecc are only de-
fined for Cortex-R CPUs. For Cortex-A CPUs, those bits are declared
as reserved.

Comp.: https://arm-software.github.io/CMSIS_5/Core_A/html/group__CMSIS__ACTLR.html

Signed-off-by: Immo Birnbaum <Immo.Birnbaum@weidmueller.com>
This commit is contained in:
Immo Birnbaum 2021-07-15 10:27:44 +02:00 • committed by Carles Cufí
commit eac90eeb52
1 changed files with 2 additions and 0 deletions
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2
arch/arm/core/aarch32/cortex_a_r/tcm.c
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@ -8,10 +8,12 @@
void z_arm_tcm_disable_ecc(void)
{
#if defined(CONFIG_ARMV7_R)
uint32_t actlr;
actlr = __get_ACTLR();
actlr &= ~(ACTLR_ATCMPCEN_Msk | ACTLR_B0TCMPCEN_Msk |
ACTLR_B1TCMPCEN_Msk);
__set_ACTLR(actlr);
#endif
}