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drivers/entropy/gecko_trng: select the correct RNGOUT_FIFO_MEM_BASE

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This commit introduces a preprocessor checking mechanism for selecting the
correct RNGOUT FIFO memory base address depending on whether SL_TRUSTZONE
is used.

Fixes #59197.

Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>
This commit is contained in:
Filip Kokosinski 2023-06-16 13:00:06 +02:00 committed by Carles Cufí
parent 0adfe5531e
commit d644bebd93
1 changed files with 16 additions and 2 deletions
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18
drivers/entropy/entropy_gecko_trng.c
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@ -12,16 +12,30 @@
#include "em_cmu.h"
#if defined(CONFIG_CRYPTO_ACC_GECKO_TRNG)
/*
* Select the correct Crypto ACC FIFO memory base address.
*
* Problem: Gecko SDK doesn't provide macros that check if SL_TRUSTZONE is used or not for Crypto
* ACC RNGOUT FIFO memory base address, like it does for register address definitions.
*
* Solution: Check which register base address is used for the Crypto ACC peripheral and select an
* appropriate FIFO memory base address.
*/
#if (CRYPTOACC_BASE == CRYPTOACC_S_BASE)
#define S2_FIFO_BASE CRYPTOACC_RNGOUT_FIFO_S_MEM_BASE
#else
#define S2_FIFO_BASE CRYPTOACC_RNGOUT_FIFO_MEM_BASE
#endif
/**
* Series 2 SoCs have different TRNG register definitions
*/
#if defined(_SILICON_LABS_32B_SERIES_2_CONFIG_2) /* xG22 */
#define S2_FIFO_BASE (CRYPTOACC_RNGOUT_FIFO_S_MEM_BASE)
#define S2_FIFO_LEVEL (CRYPTOACC_RNGCTRL->FIFOLEVEL)
#define S2_CTRL (CRYPTOACC_RNGCTRL->RNGCTRL)
#define S2_CTRL_ENABLE (CRYPTOACC_RNGCTRL_ENABLE)
#elif defined(_SILICON_LABS_32B_SERIES_2_CONFIG_7) /* xG27 */
#define S2_FIFO_BASE (CRYPTOACC_RNGOUT_FIFO_S_MEM_BASE)
#define S2_FIFO_LEVEL (CRYPTOACC->NDRNG_FIFOLEVEL)
#define S2_CTRL (CRYPTOACC->NDRNG_CONTROL)
#define S2_CTRL_ENABLE (CRYPTOACC_NDRNG_CONTROL_ENABLE)