Merge branch 'fix/move_stubs_into_flash' into 'master'

fix: ensure stubs for targets are stored in flash to save RAM space

See merge request espressif/esp-serial-flasher!151

Author: Dzarda7

cmake/gen_stub_sources.py

@@ -69,12 +69,12 @@ def read_stub_json(json_file):
             {{
                 .addr = {text_start},
                 .size = {text_size},
-                .data = (uint8_t[]){{{text_str}}},
+                .data = (const uint8_t[]){{{text_str}}},
             }},
             {{
                 .addr = {data_start},
                 .size = {data_size},
-                .data = (uint8_t[]){{{data_str}}},
+                .data = (const uint8_t[]){{{data_str}}},
             }},
         }},
     }},

examples/common/example_common.c

@@ -539,7 +539,7 @@ esp_loader_error_t load_ram_binary(const uint8_t *bin)
         }
 
         size_t remain_size = segments[seg].size;
-        uint8_t *data_pos = segments[seg].data;
+        const uint8_t *data_pos = segments[seg].data;
         while (remain_size > 0) {
             size_t data_size = MIN(ESP_RAM_BLOCK, remain_size);
             err = esp_loader_mem_write(data_pos, data_size);

include/esp_loader.h

@@ -87,7 +87,7 @@ typedef struct {
 typedef struct {
     uint32_t addr;
     uint32_t size;
-    uint8_t *data;
+    const uint8_t *data;
 } esp_loader_bin_segment_t;
 
 typedef struct {

src/esp_sdio_stubs.c

@@ -57,7 +57,7 @@ esp_loader_error_t loader_run_stub(target_chip_t target)
         }
 
         size_t remain_size = stub->segments[seg].size;
-        uint8_t *data_pos = stub->segments[seg].data;
+        const uint8_t *data_pos = stub->segments[seg].data;
         while (remain_size > 0) {
             size_t data_size = MIN(ESP_RAM_BLOCK, remain_size);
             err = esp_loader_mem_write(data_pos, data_size);