From 5e81443f931f57f48cd0ef429cbc1b0aa123fa9a Mon Sep 17 00:00:00 2001
From: Niklas Dusenlund <niklas@dusenlund.se>
Date: Tue, 6 Feb 2024 17:14:22 +0100
Subject: [PATCH 1/2] Helper scripts for setting new screen / securechip

These scripts can be used to write what screen or securechip is mounted
to the hardware using jlink.
---
 scripts/set-new-screen.jlink        | 4 ++++
 scripts/set-original-screen.jlink   | 4 ++++
 scripts/set-securechip-optiga.jlink | 4 ++++
 3 files changed, 12 insertions(+)
 create mode 100644 scripts/set-new-screen.jlink
 create mode 100644 scripts/set-original-screen.jlink
 create mode 100644 scripts/set-securechip-optiga.jlink

diff --git a/scripts/set-new-screen.jlink b/scripts/set-new-screen.jlink
new file mode 100644
index 000000000..9892d20a8
--- /dev/null
+++ b/scripts/set-new-screen.jlink
@@ -0,0 +1,4 @@
+mem 0xe002 1
+w1 0xe002 1
+mem 0xe002 1
+q
diff --git a/scripts/set-original-screen.jlink b/scripts/set-original-screen.jlink
new file mode 100644
index 000000000..64be0e32e
--- /dev/null
+++ b/scripts/set-original-screen.jlink
@@ -0,0 +1,4 @@
+mem 0xe002 1
+w1 0xe002 0xff
+mem 0xe002 1
+q
diff --git a/scripts/set-securechip-optiga.jlink b/scripts/set-securechip-optiga.jlink
new file mode 100644
index 000000000..940828aaf
--- /dev/null
+++ b/scripts/set-securechip-optiga.jlink
@@ -0,0 +1,4 @@
+mem 0xe003 1
+w1 0xe003 1
+mem 0xe003 1
+q

From 6a7ba4d620a1915b74a9a7ac26b07f7f621a5db6 Mon Sep 17 00:00:00 2001
From: Niklas Dusenlund <niklas@dusenlund.se>
Date: Fri, 9 Feb 2024 12:58:08 +0100
Subject: [PATCH 2/2] Add a function to help debugging

---
 src/util.c | 10 ++++++++++
 src/util.h |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/src/util.c b/src/util.c
index 4318214f0..8df53f74f 100644
--- a/src/util.c
+++ b/src/util.c
@@ -39,6 +39,16 @@ void util_uint8_to_hex(const uint8_t* in_bin, const size_t in_len, char* out)
         rust_util_bytes(in_bin, in_len), rust_util_bytes_mut((uint8_t*)out, in_len * 2 + 1));
 }
 
+#if defined(SEMIHOSTING)
+char* util_uint8_to_hex_alloc(const uint8_t* in_bin, const size_t in_len)
+{
+    void* out = malloc(in_len * 2 + 1);
+    rust_util_uint8_to_hex(
+        rust_util_bytes(in_bin, in_len), rust_util_bytes_mut((uint8_t*)out, in_len * 2 + 1));
+    return (char*)out;
+}
+#endif
+
 void util_cleanup_str(char** str)
 {
     util_zero(*str, strlens(*str));
diff --git a/src/util.h b/src/util.h
index e84ec1c2d..fa5cf3890 100644
--- a/src/util.h
+++ b/src/util.h
@@ -61,6 +61,10 @@ void util_zero(volatile void* dst, size_t len);
 // `out` must be of size in_len*2+1. Use BB_HEX_SIZE() to compute the size.
 void util_uint8_to_hex(const uint8_t* in_bin, size_t in_len, char* out);
 
+// This function is only compiled when we compile with SEMIHOSTING, it is convenient when debugging
+// to print byte arrays as hex.
+char* util_uint8_to_hex_alloc(const uint8_t* in_bin, size_t in_len);
+
 #define BB_HEX_SIZE(in_bin) (sizeof((in_bin)) * 2 + 1)
 
 void util_cleanup_str(char** str);