From 2dc40e08850e4d143b77b7774a2a573e63cfd70b Mon Sep 17 00:00:00 2001
From: Sam Demeulemeester <github@x86-secret.com>
Date: Sun, 12 Jul 2026 23:55:07 +0200
Subject: [PATCH] Add System/MB Serials to USB Report. Remove disabled tests

---
 app/reports.c   | 12 ++++++++++++
 system/smbios.c | 41 ++++++++++++++++++++++++++++++++++++-----
 system/smbios.h |  7 +++++++
 3 files changed, 55 insertions(+), 5 deletions(-)

diff --git a/app/reports.c b/app/reports.c
index f8f2cad..5868e9d 100644
--- a/app/reports.c
+++ b/app/reports.c
@@ -224,6 +224,15 @@ static int format_results(char *buf, int bufsize)
         pos = buf_printf(pos, "Motherboard: %s %s\r\n", board_mfg, board_prod);
     }
 
+    const char *system_serial, *baseboard_serial;
+    get_smbios_serial_info(&system_serial, &baseboard_serial);
+    if (system_serial) {
+        pos = buf_printf(pos, "System Serial: %s\r\n", system_serial);
+    }
+    if (baseboard_serial) {
+        pos = buf_printf(pos, "Baseboard Serial: %s\r\n", baseboard_serial);
+    }
+
     pos = buf_printf(pos, "Memory: %u MB\r\n", (uintptr_t)(num_pm_pages / 256));
 
     // IMC or RAM spec line.
@@ -292,6 +301,9 @@ static int format_results(char *buf, int bufsize)
     // Per-test results.
     pos = buf_printf(pos, "Per-Test Results:\r\n");
     for (int i = 0; i < NUM_TEST_PATTERNS; i++) {
+        if (!test_list[i].enabled) {
+            continue;
+        }
         // Extract description text from between brackets.
         const char *desc = test_list[i].description;
         const char *start = desc;
diff --git a/system/smbios.c b/system/smbios.c
index 9fcbdb9..73f6502 100644
--- a/system/smbios.c
+++ b/system/smbios.c
@@ -43,6 +43,14 @@ static char dmi_board_manufacturer[DMI_STRING_MAX];
 static char dmi_board_product[DMI_STRING_MAX];
 static bool dmi_board_info_valid = false;
 
+// Cached copies of the system (type 1) and baseboard (type 2) serial
+// numbers, empty when the firmware provides none. Saved at boot, like
+// the board info above.
+static char dmi_system_serial[DMI_STRING_MAX];
+static char dmi_board_serial[DMI_STRING_MAX];
+
+static bool copy_dmi_string(char *dst, size_t dst_size, struct tstruct_header *header, uint8_t string_idx);
+
 static char *get_tstruct_string(struct tstruct_header *header, uint16_t maxlen, int n)
 {
     if (n < 1)
@@ -269,6 +277,19 @@ static void override_cpu_model(void)
 }
 #endif
 
+// Snapshot the serial numbers before the memory tests overwrite the table.
+static void capture_serial_numbers(void)
+{
+    if (dmi_system_info != NULL) {
+        copy_dmi_string(dmi_system_serial, sizeof(dmi_system_serial),
+                        &dmi_system_info->header, dmi_system_info->serialnumber);
+    }
+    if (dmi_baseboard_info != NULL) {
+        copy_dmi_string(dmi_board_serial, sizeof(dmi_board_serial),
+                        &dmi_baseboard_info->header, dmi_baseboard_info->serialnumber);
+    }
+}
+
 static int8_t table_checksum(const uint8_t *start, uint8_t length)
 {
     int8_t checksum = 0;
@@ -350,6 +371,10 @@ int smbios_init(void)
 
     int result = parse_dmi(numstructs);
 
+    if (result == 0) {
+        capture_serial_numbers();
+    }
+
 #if defined(__aarch64__)
     if (result == 0) {
         override_cpu_model();
@@ -370,6 +395,12 @@ void get_smbios_board_info(const char **manufacturer, const char **product)
     }
 }
 
+void get_smbios_serial_info(const char **system_serial, const char **baseboard_serial)
+{
+    *system_serial = dmi_system_serial[0] != '\0' ? dmi_system_serial : NULL;
+    *baseboard_serial = dmi_board_serial[0] != '\0' ? dmi_board_serial : NULL;
+}
+
 void print_smbios_startup_info(void)
 {
     // Use baseboard info (struct type 2) as primary source of information,
@@ -557,14 +588,14 @@ static bool dmi_string_is_junk(const char *s, size_t len)
     return false;
 }
 
-static bool copy_dmi_string(char *dst, size_t dst_size, struct mem_dev *md, uint8_t string_idx)
+static bool copy_dmi_string(char *dst, size_t dst_size, struct tstruct_header *header, uint8_t string_idx)
 {
     dst[0] = '\0';
 
-    uint32_t remaining = table_length - (uint32_t)((const uint8_t *)md - table_start);
+    uint32_t remaining = table_length - (uint32_t)((const uint8_t *)header - table_start);
     uint16_t maxlen = remaining > UINT16_MAX ? UINT16_MAX : remaining;
 
-    const char *src = get_tstruct_string(&md->header, maxlen, string_idx);
+    const char *src = get_tstruct_string(header, maxlen, string_idx);
     if (src == NULL) {
         return false;
     }
@@ -638,10 +669,10 @@ void print_dmi_memory_info(void)
         g.speed   = memdev_speed_mts(md);
         g.type    = md->type;
         g.manuf   = memdev_jep106_name(md);
-        if (g.manuf == NULL && copy_dmi_string(g.manuf_str, sizeof(g.manuf_str), md, md->manufacturer)) {
+        if (g.manuf == NULL && copy_dmi_string(g.manuf_str, sizeof(g.manuf_str), &md->header, md->manufacturer)) {
             g.manuf = g.manuf_str;
         }
-        if (!copy_dmi_string(g.part_num, sizeof(g.part_num), md, md->partnum)) {
+        if (!copy_dmi_string(g.part_num, sizeof(g.part_num), &md->header, md->partnum)) {
             g.part_num[0] = '\0';
         }
 
diff --git a/system/smbios.h b/system/smbios.h
index 2f93f9f..9dae9b3 100644
--- a/system/smbios.h
+++ b/system/smbios.h
@@ -199,6 +199,13 @@ int smbios_init(void);
  */
 void get_smbios_board_info(const char **manufacturer, const char **product);
 
+/**
+ * Retrieve the system (type 1) and baseboard (type 2) serial numbers,
+ * snapshotted at boot before the tests overwrite the SMBIOS table.
+ * Sets output pointers to NULL if unavailable.
+ */
+void get_smbios_serial_info(const char **system_serial, const char **baseboard_serial);
+
 /**
  * Print DMI
  */