From c57631394c58ce847861e5d34aa98d9a8dfec799 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Wed, 3 Sep 2025 22:16:59 -0500
Subject: [PATCH] Revert "[esp8266] Store component source strings in PROGMEM
 to save RAM"

This reverts commit ea01cc598bc5cbd1f2d242783120a54f76a7106b.
---
 esphome/core/component.cpp | 15 ---------------
 esphome/cpp_helpers.py     |  8 ++------
 2 files changed, 2 insertions(+), 21 deletions(-)

diff --git a/esphome/core/component.cpp b/esphome/core/component.cpp
index ca8d31e922..40cda17ca3 100644
--- a/esphome/core/component.cpp
+++ b/esphome/core/component.cpp
@@ -12,9 +12,6 @@
 #ifdef USE_RUNTIME_STATS
 #include "esphome/components/runtime_stats/runtime_stats.h"
 #endif
-#ifdef USE_ESP8266
-#include <pgmspace.h>
-#endif
 
 namespace esphome {
 
@@ -188,19 +185,7 @@ void Component::call() {
 const char *Component::get_component_source() const {
   if (this->component_source_ == nullptr)
     return "<unknown>";
-#ifdef USE_ESP8266
-  // On ESP8266, component_source_ is stored in PROGMEM
-  // We need a static buffer to hold the string when read from flash
-  // Since this is only used for logging, a single shared buffer is fine
-  static char buffer[64];  // Component names are typically short
-
-  // Copy from PROGMEM to buffer
-  strncpy_P(buffer, this->component_source_, sizeof(buffer) - 1);
-  buffer[sizeof(buffer) - 1] = '\0';  // Ensure null termination
-  return buffer;
-#else
   return this->component_source_;
-#endif
 }
 bool Component::should_warn_of_blocking(uint32_t blocking_time) {
   if (blocking_time > this->warn_if_blocking_over_) {
diff --git a/esphome/cpp_helpers.py b/esphome/cpp_helpers.py
index 5164923b2d..b61b215bdc 100644
--- a/esphome/cpp_helpers.py
+++ b/esphome/cpp_helpers.py
@@ -9,7 +9,7 @@ from esphome.const import (
 )
 from esphome.core import CORE, ID, coroutine
 from esphome.coroutine import FakeAwaitable
-from esphome.cpp_generator import RawExpression, add, get_variable
+from esphome.cpp_generator import add, get_variable
 from esphome.cpp_types import App
 from esphome.types import ConfigFragmentType, ConfigType
 from esphome.util import Registry, RegistryEntry
@@ -76,11 +76,7 @@ async def register_component(var, config):
             "Error while finding name of component, please report this", exc_info=e
         )
     if name is not None:
-        # On ESP8266, store component source strings in PROGMEM to save RAM
-        if CORE.is_esp8266:
-            add(var.set_component_source(RawExpression(f'PSTR("{name}")')))
-        else:
-            add(var.set_component_source(name))
+        add(var.set_component_source(name))
 
     add(App.register_component(var))
     return var