Tactility/TactilityKernel/source/kernel_init.cpp
Ken Van Hoeylandt 03a6285328
Add kernel memory functions & other memory-related changes (#590)
New Features

- Added policy-based memory allocation APIs with capability flags and optional alignment: `memory_alloc_with_policy`, `memory_realloc_with_policy`, `memory_calloc_with_policy`, and `memory_free`.
- Switched heap memory reporting to `memory_print_stats`.

Bug Fixes

- Improved allocation robustness with capability fallback behavior.
- Added overflow-safe handling for aligned zero-initialized allocations.
- Tightened const-correctness for generated device-tree device arrays.

Tests

- Added unit tests for default policy, alignment, zero-initialization, realloc preservation, freeing, and memory stats reporting.
2026-07-26 22:59:18 +02:00

88 lines
3.0 KiB
C++

#include <tactility/kernel_init.h>
#include <tactility/device.h>
#include <tactility/log.h>
#ifdef __cplusplus
extern "C" {
#endif
#define TAG "kernel"
extern const ModuleSymbol KERNEL_SYMBOLS[];
static error_t start() {
extern Driver root_driver;
if (driver_construct_add(&root_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver battery_sense_driver;
if (driver_construct_add(&battery_sense_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver battery_sense_power_supply_driver;
if (driver_construct_add(&battery_sense_power_supply_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver gpio_hog_driver;
if (driver_construct_add(&gpio_hog_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver pwm_backlight_driver;
if (driver_construct_add(&pwm_backlight_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver gpio_backlight_driver;
if (driver_construct_add(&gpio_backlight_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver rgb_led_gpio_driver;
if (driver_construct_add(&rgb_led_gpio_driver) != ERROR_NONE) return ERROR_RESOURCE;
extern Driver rgb_led_pwm_driver;
if (driver_construct_add(&rgb_led_pwm_driver) != ERROR_NONE) return ERROR_RESOURCE;
return ERROR_NONE;
}
static error_t stop() {
return ERROR_NONE;
}
Module root_module = {
.name = "kernel",
.start = start,
.stop = stop,
.symbols = (const struct ModuleSymbol*)KERNEL_SYMBOLS,
.internal = nullptr
};
error_t kernel_init(Module* const dts_modules[], const DtsDevice dts_devices[]) {
LOG_I(TAG, "init");
if (module_construct_add_start(&root_module) != ERROR_NONE) {
LOG_E(TAG, "root module init failed");
return ERROR_RESOURCE;
}
Module* const* dts_module = dts_modules;
while (*dts_module != nullptr) {
if (module_construct_add_start(*dts_module) != ERROR_NONE) {
LOG_E(TAG, "dts module init failed: %s", (*dts_module)->name);
return ERROR_RESOURCE;
}
dts_module++;
}
const DtsDevice* dts_device = dts_devices;
while (dts_device->device != nullptr) {
if (dts_device->status == DTS_DEVICE_STATUS_OKAY) {
if (device_construct_add_start(dts_device->device, dts_device->compatible) != ERROR_NONE) {
LOG_E(TAG, "kernel_init failed to construct+add+start device: %s (%s)", dts_device->device->name, dts_device->compatible);
return ERROR_RESOURCE;
}
} else if (dts_device->status == DTS_DEVICE_STATUS_DISABLED) {
if (device_construct_add(dts_device->device, dts_device->compatible) != ERROR_NONE) {
LOG_E(TAG, "kernel_init failed to construct+add device: %s (%s)", dts_device->device->name, dts_device->compatible);
return ERROR_RESOURCE;
}
} else {
check(false, "DTS status not implemented");
}
dts_device++;
}
LOG_I(TAG, "init done");
return ERROR_NONE;
}
#ifdef __cplusplus
}
#endif