From 3a85a27fb908ae45503ac8f460fe5451f02b69c4 Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Fri, 14 Nov 2025 16:43:53 -0800
Subject: [PATCH] Unify the hdr_cpy (we don't need two)

---
 docs/Targets.md   | 13 +++++++++++++
 src/image.c       |  6 ++++++
 src/libwolfboot.c |  8 ++++++--
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/docs/Targets.md b/docs/Targets.md
index c7cb0816..ba832580 100644
--- a/docs/Targets.md
+++ b/docs/Targets.md
@@ -3654,6 +3654,19 @@ make VORAGO_SDK_DIR=$PWD../VA416xx_SDK/
   34636       4   26976   61616    f0b0 wolfboot.elf
 ```
 
+Example of wolfBoot binary sizes based on algorithms:
+
+| Authentication | Hash | wolfBoot Size |
+|----------------|------|---------------|
+| ECC256 | SHA256 | 25,836 |
+| ECC384 | SHA384 | 34,652 |
+| ECC521 | SHA384 | 38,608 |
+| ED25519 | SHA256 | 31,448 |
+| RSA2048 | SHA256 | 19,148 |
+| RSA3072 | SHA384 | 28,828 |
+| RSA4096 | SHA3-384 | 19,216 |
+| ML-DSA 87 | SHA256 | 25,168 |
+
 ### Flashing Vorago VA416x0
 
 Flash using Segger JLink: `JLinkExe -CommanderScript tools/scripts/va416x0/flash_va416xx.jlink`
diff --git a/src/image.c b/src/image.c
index 66ee1146..2f7652bf 100644
--- a/src/image.c
+++ b/src/image.c
@@ -875,8 +875,14 @@ static uint8_t *get_sha_block(struct wolfBoot_image *img, uint32_t offset)
 }
 
 #ifdef EXT_FLASH
+#ifdef UNIT_TEST
 static uint8_t hdr_cpy[IMAGE_HEADER_SIZE] XALIGNED(4);
 static int hdr_cpy_done = 0;
+#else
+/* use from libwolfboot.c */
+extern uint8_t hdr_cpy[IMAGE_HEADER_SIZE] XALIGNED(4);
+extern int hdr_cpy_done;
+#endif
 
 /**
  * @brief Get a copy of the image header.
diff --git a/src/libwolfboot.c b/src/libwolfboot.c
index 4ad30d09..ddbe0282 100644
--- a/src/libwolfboot.c
+++ b/src/libwolfboot.c
@@ -904,8 +904,8 @@ uint16_t wolfBoot_find_header(uint8_t *haystack, uint16_t type, uint8_t **ptr)
 }
 
 #ifdef EXT_FLASH
-static uint8_t hdr_cpy[IMAGE_HEADER_SIZE] XALIGNED(4);
-static uint32_t hdr_cpy_done = 0;
+uint8_t hdr_cpy[IMAGE_HEADER_SIZE] XALIGNED(4);
+uint32_t hdr_cpy_done = 0;
 #endif
 
 /**
@@ -949,6 +949,10 @@ static inline uint16_t im2ns(uint16_t val)
 }
 
 #ifdef DELTA_UPDATES
+
+/* forward declaration */
+static uint8_t* wolfBoot_get_image_from_part(uint8_t part);
+
 /**
  * @brief Get delta update information.
  *