riscv: initial support

Signed-off-by: Burt P <pburt0@gmail.com>

1 files changed, 207 insertions, 0 deletions

diff --git a/modules/devices/riscv/processor.c b/modules/devices/riscv/processor.c
new file mode 100644
index 00000000..b27a2c10
--- /dev/null
+++ b/modules/devices/riscv/processor.c
@@ -0,0 +1,207 @@
+/*
+ *    HardInfo - Displays System Information
+ *    Copyright (C) 2003-2006 Leandro A. F. Pereira <leandro@hardinfo.org>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, version 2.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* source: https://github.com/riscv/riscv-linux/blob/riscv-next/arch/riscv/kernel/cpu.c */
+
+#include "hardinfo.h"
+#include "devices.h"
+#include "cpu_util.h"
+
+GSList *
+processor_scan(void)
+{
+    GSList *procs = NULL;
+    Processor *processor = NULL;
+    FILE *cpuinfo;
+    gchar buffer[128];
+    gchar *rep_pname = NULL;
+    gchar *tmpfreq_str = NULL;
+    GSList *pi = NULL;
+
+    cpuinfo = fopen(PROC_CPUINFO, "r");
+    if (!cpuinfo)
+    return NULL;
+
+#define CHECK_FOR(k) (g_str_has_prefix(tmp[0], k))
+    while (fgets(buffer, 128, cpuinfo)) {
+        gchar **tmp = g_strsplit(buffer, ":", 2);
+        if (tmp[0] && tmp[1]) {
+            tmp[0] = g_strstrip(tmp[0]);
+            tmp[1] = g_strstrip(tmp[1]);
+        } else {
+            g_strfreev(tmp);
+            continue;
+        }
+
+        //get_str("Processor", rep_pname);
+
+        if ( CHECK_FOR("hart") ) {
+            /* finish previous */
+            if (processor) {
+                procs = g_slist_append(procs, processor);
+            }
+
+            /* start next */
+            processor = g_new0(Processor, 1);
+            processor->id = atol(tmp[1]);
+
+            if (rep_pname)
+                processor->model_name = g_strdup(rep_pname);
+
+            g_strfreev(tmp);
+            continue;
+        }
+
+        if (!processor &&
+            (  CHECK_FOR("mmu")
+            || CHECK_FOR("isa")
+            || CHECK_FOR("uarch") ) ) {
+
+            /* single proc/core may not have "hart : n" */
+            processor = g_new0(Processor, 1);
+            processor->id = 0;
+
+            if (rep_pname)
+                processor->model_name = g_strdup(rep_pname);
+        }
+
+        if (processor) {
+            get_str("mmu", processor->mmu);
+            get_str("isa", processor->isa);
+            get_str("uarch", processor->uarch);
+        }
+        g_strfreev(tmp);
+    }
+
+    if (processor)
+        procs = g_slist_append(procs, processor);
+
+    g_free(rep_pname);
+    fclose(cpuinfo);
+
+    /* re-duplicate missing data for /proc/cpuinfo variant that de-duplicated it */
+#define REDUP(f) if (dproc->f && !processor->f) processor->f = g_strdup(dproc->f);
+    Processor *dproc;
+    GSList *l;
+    l = procs = g_slist_reverse(procs);
+    while (l) {
+        processor = l->data;
+        if (processor->model_name) {
+            dproc = processor;
+        } else if (dproc) {
+            //REDUP(mmu);
+            //REDUP(isa);
+            //REDUP(uarch);
+        }
+        l = g_slist_next(l);
+    }
+    procs = g_slist_reverse(procs);
+
+    /* data not from /proc/cpuinfo */
+    for (pi = procs; pi; pi = pi->next) {
+        processor = (Processor *) pi->data;
+
+        /* strings can't be null or segfault later */
+        STRIFNULL(model_name, _("RISCV Processor") );
+        UNKIFNULL(mmu);
+        UNKIFNULL(isa);
+        UNKIFNULL(uarch);
+
+        /* topo & freq */
+        processor->cpufreq = cpufreq_new(processor->id);
+        processor->cputopo = cputopo_new(processor->id);
+
+        if (processor->cpufreq->cpukhz_max)
+            processor->cpu_mhz = processor->cpufreq->cpukhz_max / 1000;
+        else
+            processor->cpu_mhz = 0.0f;
+    }
+
+    return procs;
+}
+
+
+gchar *
+processor_get_detailed_info(Processor *processor)
+{
+    gchar *tmp_cpufreq, *tmp_topology, *ret;
+
+    tmp_topology = cputopo_section_str(processor->cputopo);
+    tmp_cpufreq = cpufreq_section_str(processor->cpufreq);
+
+    ret = g_strdup_printf("[%s]\n"
+                   "%s=%s\n"  /* model */
+                   "%s=%s\n"  /* isa */
+                   "%s=%s\n"  /* uarch */
+                   "%s=%s\n"  /* mmu */
+                   "%s=%.2f %s\n" /* frequency */
+                   "%s=%s\n"      /* byte order */
+                   "%s" /* topology */
+                   "%s" /* frequency scaling */
+                   "%s",/* empty */
+                   _("Processor"),
+                   _("Model"), processor->model_name,
+                   _("Architecture"), processor->isa,
+                   _("uarch"), processor->uarch,
+                   _("MMU"), processor->mmu,
+                   _("Frequency"), processor->cpu_mhz, _("MHz"),
+                   _("Byte Order"), byte_order_str(),
+                   tmp_topology,
+                   tmp_cpufreq,
+                    "");
+    g_free(tmp_cpufreq);
+    g_free(tmp_topology);
+    return ret;
+}
+
+gchar *processor_get_info(GSList * processors)
+{
+    Processor *processor;
+
+    if (g_slist_length(processors) > 1) {
+    gchar *ret, *tmp, *hashkey;
+    GSList *l;
+
+    tmp = g_strdup("");
+
+    for (l = processors; l; l = l->next) {
+        processor = (Processor *) l->data;
+
+        tmp = g_strdup_printf(_("%s$CPU%d$%s=%.2fMHz\n"),
+                  tmp, processor->id,
+                  processor->model_name,
+                  processor->cpu_mhz);
+
+        hashkey = g_strdup_printf("CPU%d", processor->id);
+        moreinfo_add_with_prefix("DEV", hashkey,
+                processor_get_detailed_info(processor));
+           g_free(hashkey);
+    }
+
+    ret = g_strdup_printf("[$ShellParam$]\n"
+                  "ViewType=1\n"
+                  "[Processors]\n"
+                  "%s", tmp);
+    g_free(tmp);
+
+    return ret;
+    }
+
+    processor = (Processor *) processors->data;
+    return processor_get_detailed_info(processor);
+}