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[v1.03][RISCV] Add preeliminary uarch detection

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Dr-Noob
2023-04-07 16:19:43 +02:00
parent 69dd47bab0
commit 13e86d7f14
6 changed files with 88 additions and 7 deletions
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38
src/riscv/udev.c
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@@ -4,7 +4,9 @@
#include "../common/global.h"
#include "udev.h"
#define _PATH_DEVTREE "/proc/device-tree/compatible"
#define _PATH_CPUINFO "/proc/cpuinfo"
#define _PATH_DEVTREE "/proc/device-tree/compatible"
#define CPUINFO_UARCH_STR "uarch\t\t: "
#define DEVTREE_HARDWARE_FIELD 0
char* get_field_from_devtree(int DEVTREE_FIELD) {
@@ -45,6 +47,40 @@ char* get_field_from_devtree(int DEVTREE_FIELD) {
return hardware;
}
char* parse_cpuinfo_field(char* field_str) {
int filelen;
char* buf;
if((buf = read_file(_PATH_CPUINFO, &filelen)) == NULL) {
printWarn("read_file: %s: %s", _PATH_CPUINFO, strerror(errno));
return NULL;
}
char* tmp = strstr(buf, field_str);
if(tmp == NULL) {
printWarn("parse_cpuinfo_field: Unable to find field %s", field_str);
return NULL;
}
tmp += strlen(field_str);
char* end = strstr(tmp, "\n");
if(end == NULL) {
printWarn("parse_cpuinfo_field: Unable to find newline after field %s", field_str);
return NULL;
}
int ret_strlen = (end-tmp);
char* ret = emalloc(sizeof(char) * (ret_strlen+1));
memset(ret, 0, sizeof(char) * (ret_strlen+1));
strncpy(ret, tmp, ret_strlen);
return ret;
}
char* get_hardware_from_devtree(void) {
return get_field_from_devtree(DEVTREE_HARDWARE_FIELD);
}
char* get_uarch_from_cpuinfo(void) {
return parse_cpuinfo_field(CPUINFO_UARCH_STR);
}