[nrf noup] decompression: Align to changes in nrfcompress API

This commit aligns to the changes in the nrfcompress API,
which now enables the caller to provide the expected size of the
decompressed image.

ref: NCSDK-32340

Signed-off-by: Michal Kozikowski <[email protected]>
Signed-off-by: Dominik Ermel <[email protected]>
(cherry picked from commit e110d76)
(cherry picked from commit c75fc59)

Author: nordic-mik7

boot/zephyr/decompression.c

@@ -256,15 +256,6 @@ int bootutil_img_hash_decompress(struct boot_loader_state *state, struct image_h
         goto finish_without_clean;
     }
 
-    rc = compression_lzma->init(NULL);
-    rc = compression_arm_thumb->init(NULL);
-
-    if (rc) {
-        BOOT_LOG_ERR("Decompression library fatal error");
-        rc = BOOT_EBADSTATUS;
-        goto finish_without_clean;
-    }
-
     /* We need a modified header which has the updated sizes, start with the original header */
     memcpy(&modified_hdr, hdr, sizeof(modified_hdr));
 
@@ -276,12 +267,28 @@ int bootutil_img_hash_decompress(struct boot_loader_state *state, struct image_h
     if (rc) {
         BOOT_LOG_ERR("Unable to determine decompressed size of compressed image");
         rc = BOOT_EBADIMAGE;
-        goto finish;
+        goto finish_without_clean;
     }
 
     modified_hdr.ih_flags &= ~COMPRESSIONFLAGS;
     modified_hdr.ih_img_size = decompressed_image_size;
 
+    rc = compression_lzma->init(NULL, decompressed_image_size);
+
+    if (rc) {
+        BOOT_LOG_ERR("Decompression library fatal error");
+        rc = BOOT_EBADSTATUS;
+        goto finish_without_clean;
+    }
+
+    rc = compression_arm_thumb->init(NULL, decompressed_image_size);
+
+    if (rc) {
+        BOOT_LOG_ERR("Decompression library fatal error");
+        rc = BOOT_EBADSTATUS;
+        goto finish;
+    }
+
     /* Calculate the protected TLV size, these will not include the decompressed
      * sha/size/signature entries
      */
@@ -1101,7 +1108,7 @@ int boot_copy_region_decompress(struct boot_loader_state *state, const struct fl
     if (rc) {
         BOOT_LOG_ERR("Invalid/missing image decrypted compressed size value");
         rc = BOOT_EBADIMAGE;
-        goto finish;
+        goto finish_without_clean;
     }
 
     if (IS_ENCRYPTED(hdr)) {
@@ -1124,7 +1131,7 @@ int boot_copy_region_decompress(struct boot_loader_state *state, const struct fl
          */
         BOOT_LOG_ERR("Invalid image compression flags: no supported compression found");
         rc = BOOT_EBADIMAGE;
-        goto finish;
+        goto finish_without_clean;
     }
 
     compression_lzma = nrf_compress_implementation_find(NRF_COMPRESS_TYPE_LZMA);
@@ -1135,16 +1142,7 @@ int boot_copy_region_decompress(struct boot_loader_state *state, const struct fl
         /* Compression library missing or missing required function pointer */
         BOOT_LOG_ERR("Decompression library fatal error");
         rc = BOOT_EBADSTATUS;
-        goto finish;
-    }
-
-    rc = compression_lzma->init(NULL);
-    rc = compression_arm_thumb->init(NULL);
-
-    if (rc) {
-        BOOT_LOG_ERR("Decompression library fatal error");
-        rc = BOOT_EBADSTATUS;
-        goto finish;
+        goto finish_without_clean;
     }
 
     write_alignment = flash_area_align(fap_dst);
@@ -1158,12 +1156,28 @@ int boot_copy_region_decompress(struct boot_loader_state *state, const struct fl
     if (rc) {
         BOOT_LOG_ERR("Unable to determine decompressed size of compressed image");
         rc = BOOT_EBADIMAGE;
-        goto finish;
+        goto finish_without_clean;
     }
 
     modified_hdr.ih_flags &= ~COMPRESSIONFLAGS;
     modified_hdr.ih_img_size = decompressed_image_size;
 
+    rc = compression_lzma->init(NULL, decompressed_image_size);
+
+    if (rc) {
+        BOOT_LOG_ERR("Decompression library fatal error");
+        rc = BOOT_EBADSTATUS;
+        goto finish_without_clean;
+    }
+
+    rc = compression_arm_thumb->init(NULL, decompressed_image_size);
+
+    if (rc) {
+        BOOT_LOG_ERR("Decompression library fatal error");
+        rc = BOOT_EBADSTATUS;
+        goto finish;
+    }
+
     /* Calculate protected TLV size for target image once items are removed */
     rc = boot_size_protected_tlvs(hdr, fap_src, &protected_tlv_size);
 
@@ -1457,6 +1471,11 @@ int boot_copy_region_decompress(struct boot_loader_state *state, const struct fl
     }
 
 finish:
+    /* Clean up decompression system */
+    (void)compression_lzma->deinit(NULL);
+    (void)compression_arm_thumb->deinit(NULL);
+
+finish_without_clean:
     memset(decomp_buf, 0, sizeof(decomp_buf));
 
     return rc;