From 71d660d7b17bc3b066c14eaa3a23555284b585d6 Mon Sep 17 00:00:00 2001
From: Dr-Noob <peibolms@gmail.com>
Date: Tue, 24 Nov 2020 10:03:21 +0100
Subject: [PATCH] [v0.88][ARM] Fetch raw soc name from cpuinfo or android (if
 supported)

---
 src/arm/soc.c     | 59 ++++++++++++++++++++++++++++++++---------------
 src/common/udev.c | 33 ++++++++++++++++++++++++++
 src/common/udev.h |  1 +
 3 files changed, 75 insertions(+), 18 deletions(-)

diff --git a/src/arm/soc.c b/src/arm/soc.c
index f55687e..48d4b4b 100644
--- a/src/arm/soc.c
+++ b/src/arm/soc.c
@@ -3,6 +3,8 @@
 #include <string.h>
 
 #include "soc.h"
+#include "../common/udev.h"
+#include "../common/global.h"
 
 #define STRING_UNKNOWN    "Unknown"
 
@@ -13,40 +15,61 @@ static inline int android_property_get(const char* key, char* value) {
   return __system_property_get(key, value);
 }
 
-char* android_guess_soc() {
-  char* raw_name = NULL;
+struct system_on_chip* guess_soc_from_android() {
+  struct system_on_chip* soc = NULL;
   char tmp[100];
   int property_len = 0;
   
   property_len = android_property_get("ro.mediatek.platform", (char *) &tmp);
   if(property_len > 0) {
-    raw_name = malloc(sizeof(char) * (property_len + 1));
-    strcpy(raw_name, tmp);
-    raw_name[property_len] = '\0';
-    return raw_name;
+    soc = malloc(sizeof(struct system_on_chip));
+    soc->raw_name = malloc(sizeof(char) * (property_len + 1));
+    strncpy(soc->raw_name, tmp, property_len + 1);
+    soc->raw_name[property_len] = '\0';
+    return soc;
   }
   
   property_len = android_property_get("ro.product.board", (char *) &tmp);
   if(property_len > 0) {    
-    raw_name = malloc(sizeof(char) * (property_len + 1));
-    strcpy(raw_name, tmp);
-    raw_name[property_len] = '\0';
-    return raw_name;
+    soc = malloc(sizeof(struct system_on_chip));
+    soc->raw_name = malloc(sizeof(char) * (property_len + 1));
+    strncpy(soc->raw_name, tmp, property_len + 1);
+    soc->raw_name[property_len] = '\0';
+    return soc;
   }    
   
-  return NULL;
+  return soc;
 }
 #endif
 
-struct system_on_chip* get_soc() {
-  struct system_on_chip* soc = malloc(sizeof(struct system_on_chip));
-  soc->raw_name = NULL;
+struct system_on_chip* guess_soc_from_cpuinfo() {
+  struct system_on_chip* soc = NULL;
   
-#ifdef __ANDROID__
-  soc->raw_name = android_guess_soc();
-#endif
+  char* tmp = get_hardware_from_cpuinfo(&strlen);
+  if(tmp != NULL) {
+    soc = malloc(sizeof(struct system_on_chip));  
+    soc->raw_name = tmp;
+  }
+  
+  return soc;
+}
 
-  if(soc->raw_name == NULL) {
+struct system_on_chip* get_soc() {
+  struct system_on_chip* soc = NULL;
+  
+  soc = guess_soc_from_cpuinfo();
+  if(soc == NULL) {
+    printWarn("SoC detection failed using /proc/cpuinfo");
+#ifdef __ANDROID__
+    soc = guess_soc_from_android();
+    if(soc == NULL) {
+      printWarn("SoC detection failed using Android");
+    }
+#endif
+  }
+
+  if(soc == NULL) {
+    soc = malloc(sizeof(struct system_on_chip));
     soc->raw_name = malloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
     snprintf(soc->raw_name, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
   }
diff --git a/src/common/udev.c b/src/common/udev.c
index 541e271..d790d05 100644
--- a/src/common/udev.c
+++ b/src/common/udev.c
@@ -96,6 +96,7 @@ long get_min_freq_from_file(uint32_t core) {
 #define CPUINFO_CPU_VARIANT_STR      "CPU variant\t: "
 #define CPUINFO_CPU_PART_STR         "CPU part\t: "
 #define CPUINFO_CPU_REVISION_STR     "CPU revision\t: "
+#define CPUINFO_HARDWARE_STR         "Hardware\t: "
 
 #define CPUINFO_CPU_STRING "processor"
 
@@ -250,4 +251,36 @@ uint32_t get_midr_from_cpuinfo(uint32_t core, bool* success) {
   return midr;
 }
 
+char* get_hardware_from_cpuinfo() {
+  int fd = open(_PATH_CPUINFO, O_RDONLY);
+  
+  if(fd == -1) {
+    perror("open");
+    return NULL;
+  }
+
+  //File exists, read it
+  int bytes_read = 0;
+  int offset = 0;
+  int block = 128;
+  char* buf = malloc(sizeof(char)*DEFAULT_FILE_SIZE);
+  memset(buf, 0, sizeof(char)*DEFAULT_FILE_SIZE);
+
+  while (  (bytes_read = read(fd, buf+offset, block)) > 0 ) {
+    offset += bytes_read;
+  }   
+  
+  char* tmp1 = strstr(buf, CPUINFO_HARDWARE_STR);
+  if(tmp1 == NULL) return NULL;
+  tmp1 = tmp1 + strlen(CPUINFO_HARDWARE_STR);
+  char* tmp2 = strstr(tmp1, "\n");
+  
+  int strlen = (1 + (tmp2-tmp1));
+  char* hardware = malloc(sizeof(char) * strlen);
+  memset(hardware, 0, sizeof(char) * strlen);
+  strncpy(hardware, tmp1, tmp2-tmp1);
+  
+  return hardware;
+}
+
 #endif /* ARCH_ARM */
diff --git a/src/common/udev.h b/src/common/udev.h
index 6fea39c..cacae59 100644
--- a/src/common/udev.h
+++ b/src/common/udev.h
@@ -11,6 +11,7 @@ long get_min_freq_from_file(uint32_t core);
 #define UNKNOWN -1
 int get_ncores_from_cpuinfo();
 uint32_t get_midr_from_cpuinfo(uint32_t core, bool* success);
+char* get_hardware_from_cpuinfo();
 #endif
 
 #endif