patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

drivers/flash/nrf: Workaround for nrf91 errata 7

Browse source 
Fix UICR read access.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This commit is contained in:
Dominik Ermel 2023-09-20 19:17:26 +00:00 committed by Carles Cufí
parent cc5766bc4b
commit 1f3605de21
1 changed files with 31 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
drivers/flash/soc_flash_nrf.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2017-2018 Nordic Semiconductor ASA
* Copyright (c) 2017-2023 Nordic Semiconductor ASA
* Copyright (c) 2016 Linaro Limited
* Copyright (c) 2016 Intel Corporation
*
@ -116,6 +116,26 @@ static inline bool is_uicr_addr_valid(off_t addr, size_t len)
#endif /* CONFIG_SOC_FLASH_NRF_UICR */
}
#if CONFIG_SOC_FLASH_NRF_UICR && IS_ENABLED(NRF91_ERRATA_7_ENABLE_WORKAROUND)
static inline void nrf91_errata_7_enter(void)
{
__disable_irq();
}
static inline void nrf91_errata_7_exit(void)
{
__DSB();
__enable_irq();
}
static void nrf_buffer_read_91_uicr(void *data, off_t addr, size_t len)
{
nrf91_errata_7_enter();
nrf_nvmc_buffer_read(data, (uint32_t)addr, len);
nrf91_errata_7_exit();
}
#endif
static void nvmc_wait_ready(void)
{
while (!nrfx_nvmc_write_done_check()) {
@ -125,9 +145,11 @@ static void nvmc_wait_ready(void)
static int flash_nrf_read(const struct device *dev, off_t addr,
void *data, size_t len)
{
const bool within_uicr = is_uicr_addr_valid(addr, len);
if (is_regular_addr_valid(addr, len)) {
addr += DT_REG_ADDR(SOC_NV_FLASH_NODE);
} else if (!is_uicr_addr_valid(addr, len)) {
} else if (!within_uicr) {
LOG_ERR("invalid address: 0x%08lx:%zu",
(unsigned long)addr, len);
return -EINVAL;
@ -137,6 +159,13 @@ static int flash_nrf_read(const struct device *dev, off_t addr,
return 0;
}
#if CONFIG_SOC_FLASH_NRF_UICR && IS_ENABLED(NRF91_ERRATA_7_ENABLE_WORKAROUND)
if (within_uicr) {
nrf_buffer_read_91_uicr(data, (uint32_t)addr, len);
return 0;
}
#endif
nrf_nvmc_buffer_read(data, (uint32_t)addr, len);
return 0;