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drivers: entropy: stm32: add support for STM32F7

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All the STM32F7 SoCs have a TRNG. Adding support for it is just a matter
of tweaking the #ifdef and including the right file from HAL.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2018-07-01 18:15:15 +02:00 • committed by Anas Nashif
commit 5aa09c6baa
4 changed files with 15 additions and 3 deletions
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7
arch/arm/soc/st_stm32/stm32f7/Kconfig.defconfig.series
View file

@ -28,4 +28,11 @@ config GPIO_STM32_PORTI
endif # GPIO_STM32
if ENTROPY_GENERATOR
config ENTROPY_STM32_RNG
def_bool y
endif # ENTROPY_GENERATOR
endif # SOC_SERIES_STM32F7X

4
arch/arm/soc/st_stm32/stm32f7/soc.h
View file

@ -42,6 +42,10 @@
#include <stm32f7xx_ll_usart.h>
#endif
#ifdef CONFIG_ENTROPY_STM32_RNG
#include <stm32f7xx_ll_rng.h>
#endif
#endif /* !_ASMLANGUAGE */
#endif /* _STM32F7_SOC_H_ */

3
drivers/entropy/Kconfig.stm32
View file

@ -13,4 +13,5 @@ menuconfig ENTROPY_STM32_RNG
help
This option enables the RNG processor, which is a entropy number
generator, based on a continuous analog noise, that provides
a entropy 32-bit value to the host when read.
a entropy 32-bit value to the host when read. It is available for
F4 (except STM32F401 & STM32F411), L4 and F7 series.

4
drivers/entropy/entropy_stm32.c
View file

@ -17,8 +17,8 @@
#include <clock_control.h>
#include <clock_control/stm32_clock_control.h>
#if !defined(CONFIG_SOC_SERIES_STM32L4X) && !defined(CONFIG_SOC_SERIES_STM32F4X)
#error RNG only available on STM32F4 and STM32L4 series
#if !defined(CONFIG_SOC_SERIES_STM32L4X) && !defined(CONFIG_SOC_SERIES_STM32F4X) && !defined(CONFIG_SOC_SERIES_STM32F7X)
#error RNG only available on STM32F4, STM32F7 and STM32L4 series
#elif defined(CONFIG_SOC_STM32F401XE)
#error RNG not available on STM32F401 based SoCs
#elif defined(CONFIG_SOC_STM32F411XE)