Kernel improvements (#468)

* **New Features** * Plugin-style modules for platforms and devices with start/stop lifecycle and a runtime-consumable device tree array. * **Refactor** * Consolidated initialization into a kernel/module startup flow. * Generated devicetree artifacts moved to the build Generated directory. * **Changes** * Removed legacy no-op registration hooks and I2C lock/unlock wrappers. * Driver ownership and private state moved to explicit module/owner model. * Added ERROR_NOT_ALLOWED error code.
2026-01-31 09:18:02 +01:00
parent d62314f41f
commit c9185740d7
119 changed files with 1639 additions and 440 deletions
@@ -0,0 +1,61 @@
+#include <tactility/kernel_init.h>
+#include <tactility/log.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TAG LOG_TAG(kernel)
+
+struct ModuleParent kernel_module_parent = {
+    "kernel",
+    nullptr
+};
+
+static error_t init_kernel_drivers() {
+    extern Driver root_driver;
+    if (driver_construct(&root_driver) != ERROR_NONE) return ERROR_RESOURCE;
+    return ERROR_NONE;
+}
+
+error_t kernel_init(struct Module* platform_module, struct Module* device_module, struct CompatibleDevice devicetree_devices[]) {
+    LOG_I(TAG, "init");
+
+    if (module_parent_construct(&kernel_module_parent) != ERROR_NONE) {
+        LOG_E(TAG, "init failed to create kernel module parent");
+        return ERROR_RESOURCE;
+    }
+
+    if (init_kernel_drivers() != ERROR_NONE) {
+        LOG_E(TAG, "init failed to init kernel drivers");
+        return ERROR_RESOURCE;
+    }
+
+    module_set_parent(platform_module, &kernel_module_parent);
+    if (module_start(platform_module) != ERROR_NONE) {
+        LOG_E(TAG, "init failed to start platform module");
+        return ERROR_RESOURCE;
+    }
+
+    module_set_parent(device_module, &kernel_module_parent);
+    if (module_start(device_module) != ERROR_NONE) {
+        LOG_E(TAG, "init failed to start device module");
+        return ERROR_RESOURCE;
+    }
+
+    CompatibleDevice* compatible_device = devicetree_devices;
+    while (compatible_device->device != nullptr) {
+        if (device_construct_add_start(compatible_device->device, compatible_device->compatible) != ERROR_NONE) {
+            LOG_E(TAG, "kernel_init failed to construct device: %s (%s)", compatible_device->device->name, compatible_device->compatible);
+            return ERROR_RESOURCE;
+        }
+        compatible_device++;
+    }
+
+    LOG_I(TAG, "init done");
+    return ERROR_NONE;
+};
+
+#ifdef __cplusplus
+}
+#endif