From 0895a122723ab62d104e34f9417b92e119045d04 Mon Sep 17 00:00:00 2001
From: andy <1414772332@qq.com>
Date: Sat, 19 Oct 2024 12:03:37 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20ah=20=E7=9A=84=E4=B8=80?=
 =?UTF-8?q?=E4=BA=9B=E6=B3=A8=E9=87=8A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 mfgtool/ah/add_header_v1.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mfgtool/ah/add_header_v1.c b/mfgtool/ah/add_header_v1.c
index 2282fd6..f0f8576 100644
--- a/mfgtool/ah/add_header_v1.c
+++ b/mfgtool/ah/add_header_v1.c
@@ -575,6 +575,7 @@ int ah_GetConfig(char *pcfgName, ah_cfg *pcfg)
 
 #define PACKAGE_HEADER_SIZE         96
 
+// 这里添加的是img的头
 void ah_fillHeader(char* p_buf, ah_cfg *cfg, int cnt, int fileSize, int _CRC,
     unsigned char *sha)
 {
@@ -596,6 +597,7 @@ void ah_fillHeader(char* p_buf, ah_cfg *cfg, int cnt, int fileSize, int _CRC,
     }
 
     /* CFG */
+    // 快速启动也是在这里配置的
     if (cfg->fastboot == 1) {
         p_buf[3] = 1;
     } else {
@@ -626,6 +628,7 @@ void ah_fillHeader(char* p_buf, ah_cfg *cfg, int cnt, int fileSize, int _CRC,
     p_buf[11] = hdrVer_10;
 
     /* IMG VER */
+    // 用大端方式存储多字节
     p_buf[12] = (char)GET_BYTE4(cfg->image[cnt].version);
     p_buf[13] = (char)GET_BYTE3(cfg->image[cnt].version);
     p_buf[14] = (char)GET_BYTE2(cfg->image[cnt].version);
@@ -1068,6 +1071,7 @@ int ah_funConstruct(char argc, char *argv[])
         cfg.crc = 0xFFFFFFFF^CRC32_Update(0xFFFFFFFF, payload , total_size);
         hdr->file_crc = htonl(cfg.crc);
 
+        // 这里根据加密类型对整个镜像进行加密
         if(1 == cfg.encrypt_mode)
         {
             st = payload;