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tests: entropy: api: Add nocache buffer option

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Add a Kconfig option to put the buffer for random numbers
in the nocache region instead of on the stack.

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
This commit is contained in:
Declan Snyder 2022-09-27 09:35:37 -05:00 committed by Carles Cufí
parent 2f88e509f1
commit fe1dd118c8
2 changed files with 17 additions and 1 deletions
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10
tests/drivers/entropy/api/Kconfig Normal file
View file

@ -0,0 +1,10 @@
# Copyright NXP 2022
# SPDX-License-Identifier: Apache-2.0
mainmenu "Entropy API Test"
source "Kconfig.zephyr"
source "tests/drivers/entropy/api/Kconfig.mcux"
config RANDOM_BUFFER_NOCACHED
bool "Put the buffer of randomly generated numbers in nocache region."

8
tests/drivers/entropy/api/src/main.c
View file

@ -25,6 +25,13 @@
#define BUFFER_LENGTH 10
#define RECHECK_RANDOM_ENTROPY 0x10
#ifdef CONFIG_RANDOM_BUFFER_NOCACHED
__attribute__((__section__(".nocache")))
static uint8_t buffer[BUFFER_LENGTH] = {0};
#else
static uint8_t buffer[BUFFER_LENGTH] = {0};
#endif
static int random_entropy(const struct device *dev, char *buffer, char num)
{
int ret, i;
@ -69,7 +76,6 @@ static int random_entropy(const struct device *dev, char *buffer, char num)
static int get_entropy(void)
{
const struct device *const dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy));
uint8_t buffer[BUFFER_LENGTH] = { 0 };
int ret;
if (!device_is_ready(dev)) {