adafruit-mirror/zephyr
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 9

drivers: hwinfo: Add RW hwinfo driver

Browse source 
Add RW hwinfo driver

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
This commit is contained in:
Declan Snyder 2024-03-05 16:43:16 -06:00 committed by David Leach
parent c6b07ef8db
commit 9607543496
3 changed files with 96 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/hwinfo/CMakeLists.txt
View file

@ -28,3 +28,4 @@ zephyr_library_sources_ifdef(CONFIG_HWINFO_SAM4L hwinfo_sam4l.c)
zephyr_library_sources_ifdef(CONFIG_HWINFO_SMARTBOND hwinfo_smartbond.c)
zephyr_library_sources_ifdef(CONFIG_HWINFO_STM32 hwinfo_stm32.c)
zephyr_library_sources_ifdef(CONFIG_HWINFO_ANDES hwinfo_andes.c)
zephyr_library_sources_ifdef(CONFIG_HWINFO_RW61X hwinfo_rw61x.c)

7
drivers/hwinfo/Kconfig
View file

@ -192,4 +192,11 @@ config HWINFO_ANDES
help
Enable Andes hwinfo driver
config HWINFO_RW61X
bool "RW61X hwinfo"
default y
depends on SOC_SERIES_RW6XX
help
Enable RW61X hwinfo driver
endif

88
drivers/hwinfo/hwinfo_rw61x.c Normal file
View file

@ -0,0 +1,88 @@
/*
* Copyright 2024 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/drivers/hwinfo.h>
#include <fsl_ocotp.h>
#include <fsl_power.h>
/* Because of the ROM clearing the reset register and using scratch register
* which cannot be cleared, we have to "fake" this to meet the hwinfo api.
* Technically all the reset causes are already cleared by the ROM, but we will
* still clear them ourselves on the first call to clear them by user.
*/
static bool reset_cleared;
ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length)
{
uint32_t id_length = length;
if (OCOTP_ReadUniqueID(buffer, &id_length)) {
return -EINVAL;
}
return (ssize_t)id_length;
}
int z_impl_hwinfo_get_supported_reset_cause(uint32_t *supported)
{
*supported = (
RESET_SOFTWARE |
RESET_CPU_LOCKUP |
RESET_WATCHDOG |
RESET_SECURITY |
RESET_DEBUG |
RESET_HARDWARE
);
return 0;
}
int z_impl_hwinfo_get_reset_cause(uint32_t *cause)
{
if (reset_cleared) {
*cause = 0;
return 0;
}
uint32_t reset_cause = POWER_GetResetCause();
switch (reset_cause) {
case kPOWER_ResetCauseSysResetReq:
*cause = RESET_SOFTWARE;
break;
case kPOWER_ResetCauseLockup:
*cause = RESET_CPU_LOCKUP;
break;
case kPOWER_ResetCauseWdt:
*cause = RESET_WATCHDOG;
break;
case kPOWER_ResetCauseApResetReq:
*cause = RESET_DEBUG;
break;
case kPOWER_ResetCauseCodeWdt:
case kPOWER_ResetCauseItrc:
*cause = RESET_SECURITY;
break;
case kPOWER_ResetCauseResetB:
*cause = RESET_HARDWARE;
break;
default:
*cause = 0;
break;
}
return 0;
}
int z_impl_hwinfo_clear_reset_cause(void)
{
POWER_ClearResetCause(kPOWER_ResetCauseAll);
reset_cleared = true;
return 0;
}