From ef5565ada85de5a3e32e06c205b894d343b63e41 Mon Sep 17 00:00:00 2001
From: rw-r-r-0644 <r.r.qwertyuiop.r.r@gmail.com>
Date: Sun, 30 May 2021 20:11:26 +0200
Subject: [PATCH] cleanup previous ancast header

---
 stage2/ancast.c | 4 ++++
 stage2/ancast.h | 1 +
 stage2/main.c   | 4 ++++
 3 files changed, 9 insertions(+)

diff --git a/stage2/ancast.c b/stage2/ancast.c
index a6c6387..0923499 100644
--- a/stage2/ancast.c
+++ b/stage2/ancast.c
@@ -23,6 +23,10 @@
 
 #include "ancast.h"
 
+void ancast_iop_clear(u8* buffer)
+{
+    memset(&buffer[0], 0, 0x200);
+}
 
 u32 ancast_iop_load(u8* buffer, size_t size)
 {
diff --git a/stage2/ancast.h b/stage2/ancast.h
index 7386e84..28c5408 100644
--- a/stage2/ancast.h
+++ b/stage2/ancast.h
@@ -37,6 +37,7 @@ typedef struct {
     u32 ddr_init;
 } ios_header;
 
+void ancast_iop_clear(u8* buffer);
 u32 ancast_iop_load(u8* buffer, size_t size);
 
 #endif
diff --git a/stage2/main.c b/stage2/main.c
index 787de4e..9679753 100644
--- a/stage2/main.c
+++ b/stage2/main.c
@@ -40,6 +40,8 @@ u32 load_payload_sd(void)
     FIL file;
     u32 vector = 0;
 
+    ancast_iop_clear((u8*)ANCAST_ADDRESS_IOP);
+
     sdcard_init();
 
     res = f_mount(&fatfs, "0:", 1);
@@ -76,6 +78,8 @@ u32 load_payload_nand(void)
     int res;
     u32 vector = 0;
 
+    ancast_iop_clear((u8*)ANCAST_ADDRESS_IOP);
+
     res = isfs_init();
     if (res)
         return vector;