This commit contains the actual API to be used from a configurator.
Furthermore, it contains a tool to print all constraints into a file.
Co-developed-by: Patrick Franz <deltaone@xxxxxxxxxx>
Signed-off-by: Patrick Franz <deltaone@xxxxxxxxxx>
Co-developed-by: Ibrahim Fayaz <phayax@xxxxxxxxx>
Signed-off-by: Ibrahim Fayaz <phayax@xxxxxxxxx>
Reviewed-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Tested-by: Evgeny Groshev <eugene.groshev@xxxxxxxxx>
Suggested-by: Sarah Nadi <nadi@xxxxxxxxxxx>
Suggested-by: Thorsten Berger <thorsten.berger@xxxxxx>
Signed-off-by: Thorsten Berger <thorsten.berger@xxxxxx>
Signed-off-by: Ole Schuerks <ole0811sch@xxxxxxxxx>
---
scripts/kconfig/.gitignore | 1 +
scripts/kconfig/cfoutconfig.c | 142 ++++++++++++++
scripts/kconfig/configfix.c | 337 ++++++++++++++++++++++++++++++++++
scripts/kconfig/configfix.h | 40 ++++
4 files changed, 520 insertions(+)
create mode 100644 scripts/kconfig/cfoutconfig.c
create mode 100644 scripts/kconfig/configfix.c
create mode 100644 scripts/kconfig/configfix.h
diff --git a/scripts/kconfig/.gitignore b/scripts/kconfig/.gitignore
index 0b2ff775b2e3..23446f70083e 100644
--- a/scripts/kconfig/.gitignore
+++ b/scripts/kconfig/.gitignore
@@ -5,3 +5,4 @@
/[gmnq]conf-cflags
/[gmnq]conf-libs
/qconf-moc.cc
+/cfoutconfig
diff --git a/scripts/kconfig/cfoutconfig.c b/scripts/kconfig/cfoutconfig.c
new file mode 100644
index 000000000000..c0879e6ebaa1
--- /dev/null
+++ b/scripts/kconfig/cfoutconfig.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Patrick Franz <deltaone@xxxxxxxxxx>
+ */
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "configfix.h"
+#include "internal.h"
+
+#define OUTFILE_CONSTRAINTS "./scripts/kconfig/cfout_constraints.txt"
+#define OUTFILE_DIMACS "./scripts/kconfig/cfout_constraints.dimacs"
+
+static void write_constraints_to_file(struct cfdata *data);
+static void write_dimacs_to_file(PicoSAT *pico, struct cfdata *data);
+
+/* -------------------------------------- */
+
+int main(int argc, char *argv[])
+{
+ clock_t start, end;
+ double time;
+ PicoSAT *pico;
+
+ static struct constants constants = {NULL, NULL, NULL, NULL, NULL};
+ static struct cfdata data = {
+ 1, // unsigned int sat_variable_nr
+ 1, // unsigned int tmp_variable_nr
+ NULL, // struct fexpr *satmap
+ 0, // size_t satmap_size
+ &constants // struct constants *constants
+ };
+
+ printf("\nCreating constraints and CNF clauses...");
+ /* measure time for constructing constraints and clauses */
+ start = clock();
+
+ /* parse Kconfig-file and read .config */
+ init_config(argv[1]);
+
+ /* initialize satmap and cnf_clauses */
+ init_data(&data);
+
+ /* creating constants */
+ create_constants(&data);
+
+ /* assign SAT variables & create sat_map */
+ create_sat_variables(&data);
+
+ /* get the constraints */
+ get_constraints(&data);
+
+ end = clock();
+ time = ((double) (end - start)) / CLOCKS_PER_SEC;
+
+ printd("done. (%.6f secs.)\n", time);
+
+ /* start PicoSAT */
+ pico = picosat_init();
+ picosat_enable_trace_generation(pico);
+ printd("Building CNF-clauses...");
+ start = clock();
+
+ /* construct the CNF clauses */
+ construct_cnf_clauses(pico, &data);
+
+ end = clock();
+ time = ((double) (end - start)) / CLOCKS_PER_SEC;
+ printf("done. (%.6f secs.)\n", time);
+
+ printf("\n");
+
+ /* write constraints into file */
+ start = clock();
+ printf("Writing constraints...");
+ write_constraints_to_file(&data);
+ end = clock();
+ time = ((double) (end - start)) / CLOCKS_PER_SEC;
+ printf("done. (%.6f secs.)\n", time);
+
+ /* write SAT problem in DIMACS into file */
+ start = clock();
+ printf("Writing SAT problem in DIMACS...");
+ write_dimacs_to_file(pico, &data);
+ end = clock();
+ time = ((double) (end - start)) / CLOCKS_PER_SEC;
+ printf("done. (%.6f secs.)\n", time);
+
+ printf("\nConstraints have been written into %s\n", OUTFILE_CONSTRAINTS);
+ printf("DIMACS-output has been written into %s\n", OUTFILE_DIMACS);
+
+ return 0;
+}
+
+static void write_constraints_to_file(struct cfdata *data)
+{
+ FILE *fd = fopen(OUTFILE_CONSTRAINTS, "w");
+ struct symbol *sym;
+
+ for_all_symbols(sym) {
+ struct pexpr_node *node;
+
+ if (sym->type == S_UNKNOWN)
+ continue;
+
+ pexpr_list_for_each(node, sym->constraints) {
+ struct gstr s = str_new();
+
+ pexpr_as_char(node->elem, &s, 0, data);
+ fprintf(fd, "%s\n", str_get(&s));
+ str_free(&s);
+ }
+ }
+ fclose(fd);
+}
+
+static void add_comment(FILE *fd, struct fexpr *e)
+{
+ fprintf(fd, "c %d %s\n", e->satval, str_get(&e->name));
+}
+
+static void write_dimacs_to_file(PicoSAT *pico, struct cfdata *data)
+{
+ FILE *fd = fopen(OUTFILE_DIMACS, "w");
+
+ unsigned int i;
+
+ for (i = 1; i < data->sat_variable_nr; i++)
+ add_comment(fd, data->satmap[i]);
+
+ picosat_print(pico, fd);
+ fclose(fd);
+}
diff --git a/scripts/kconfig/configfix.c b/scripts/kconfig/configfix.c
new file mode 100644
index 000000000000..e161424149c4
--- /dev/null
+++ b/scripts/kconfig/configfix.c
@@ -0,0 +1,337 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Patrick Franz <deltaone@xxxxxxxxxx>
+ */
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "configfix.h"
+#include "internal.h"
+#include "cf_expr.h"
+
+bool CFDEBUG;
+bool stop_rangefix;
+
+static PicoSAT *pico;
+static bool init_done;
+static struct sym_list *conflict_syms;
+
+static bool sdv_within_range(struct sdv_list *symbols);
+
+/* -------------------------------------- */
+
+
+struct sfl_list *run_satconf(struct sdv_list *symbols)
+{
+ clock_t start, end;
+ double time;
+ struct symbol *sym;
+ struct sdv_node *node;
+ int res;
+ struct sfl_list *ret;
+
+ static struct constants constants = {NULL, NULL, NULL, NULL, NULL};
+ static struct cfdata data = {
+ 1, // unsigned int sat_variable_nr
+ 1, // unsigned int tmp_variable_nr
+ NULL, // struct fexpr *satmap
+ 0, // size_t satmap_size
+ &constants, // struct constants *constants
+ NULL // array with conflict-symbols
+ };
+
+
+ /* check whether all values can be applied -> no need to run */
+ if (sdv_within_range(symbols)) {
+ printd("\nAll symbols are already within range.\n\n");
+ return sfl_list_init();
+ }
+
+ if (!init_done) {
+ printd("\n");
+ printd("Init...");
+
+ /* measure time for constructing constraints and clauses */
+ start = clock();
+
+ /* initialize satmap and cnf_clauses */
+ init_data(&data);
+
+ /* creating constants */
+ create_constants(&data);
+
+ /* assign SAT variables & create sat_map */
+ create_sat_variables(&data);
+
+ /* get the constraints */
+ get_constraints(&data);
+
+ end = clock();
+ time = ((double)(end - start)) / CLOCKS_PER_SEC;
+
+ printd("done. (%.6f secs.)\n", time);
+
+ /* start PicoSAT */
+ pico = initialize_picosat();
+ printd("Building CNF-clauses...");
+ start = clock();
+
+ /* construct the CNF clauses */
+ construct_cnf_clauses(pico, &data);
+
+ end = clock();
+ time = ((double)(end - start)) / CLOCKS_PER_SEC;
+
+ printd("done. (%.6f secs.)\n", time);
+
+ printd("CNF-clauses added: %d\n",
+ picosat_added_original_clauses(pico));
+
+ init_done = true;
+ }
+
+ /* copy array with symbols to change */
+ data.sdv_symbols = sdv_list_copy(symbols);
+
+ /* add assumptions for conflict-symbols */
+ sym_add_assumption_sdv(pico, data.sdv_symbols);
+
+ /* add assumptions for all other symbols */
+ for_all_symbols(sym) {
+ if (sym->type == S_UNKNOWN)
+ continue;
+
+ if (!sym_is_sdv(data.sdv_symbols, sym))
+ sym_add_assumption(pico, sym);
+ }
+
+ /* store the conflict symbols */
+ conflict_syms = sym_list_init();
+ sdv_list_for_each(node, data.sdv_symbols)
+ sym_list_add(conflict_syms, node->elem->sym);
+
+ printd("Solving SAT-problem...");
+ start = clock();
+
+ res = picosat_sat(pico, -1);
+
+ end = clock();
+ time = ((double)(end - start)) / CLOCKS_PER_SEC;
+ printd("done. (%.6f secs.)\n\n", time);
+
+ if (res == PICOSAT_SATISFIABLE) {
+ printd("===> PROBLEM IS SATISFIABLE <===\n");
+
+ ret = sfl_list_init();
+
+ } else if (res == PICOSAT_UNSATISFIABLE) {
+ printd("===> PROBLEM IS UNSATISFIABLE <===\n");
+ printd("\n");
+
+ ret = rangefix_run(pico, &data);
+ } else {
+ printd("Unknown if satisfiable.\n");
+
+ ret = sfl_list_init();
+ }
+
+ sdv_list_free(data.sdv_symbols);
+ return ret;
+}
+
+/*
+ * check whether a symbol is a conflict symbol
+ */
+static bool sym_is_conflict_sym(struct symbol *sym)
+{
+ struct sym_node *node;
+
+ sym_list_for_each(node, conflict_syms)
+ if (sym == node->elem)
+ return true;
+
+ return false;
+}
+
+/*
+ * check whether all conflict symbols are set to their target values
+ */
+static bool syms_have_target_value(struct sfix_list *list)
+{
+ struct symbol_fix *fix;
+ struct sfix_node *node;
+
+ sfix_list_for_each(node, list) {
+ fix = node->elem;
+
+ if (!sym_is_conflict_sym(fix->sym))
+ continue;
+
+ sym_calc_value(fix->sym);
+
+ if (sym_is_boolean(fix->sym)) {
+ if (fix->tri != sym_get_tristate_value(fix->sym))
+ return false;
+ } else {
+ if (strcmp(str_get(&fix->nb_val),
+ sym_get_string_value(fix->sym)) != 0)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/*
+ *
+ * apply the fixes from a diagnosis
+ */
+int apply_fix(struct sfix_list *fix)
+{
+ struct symbol_fix *sfix;
+ struct sfix_node *node, *next;
+ unsigned int no_symbols_set = 0, iterations = 0, manually_changed = 0;
+
+ struct sfix_list *tmp = sfix_list_copy(fix);
+
+ printd("Trying to apply fixes now...\n");
+
+ while (no_symbols_set < fix->size && !syms_have_target_value(fix)) {
+ if (iterations > fix->size * 2) {
+ printd("\nCould not apply all values :-(.\n");
+ return manually_changed;
+ }
+
+ for (node = tmp->head; node != NULL;) {
+ sfix = node->elem;
+
+ /* update symbol's current value */
+ sym_calc_value(sfix->sym);
+
+ /* value already set? */
+ if (sfix->type == SF_BOOLEAN) {
+ if (sfix->tri == sym_get_tristate_value(sfix->sym)) {
+ next = node->next;
+ sfix_list_delete(tmp, node);
+ node = next;
+ no_symbols_set++;
+ continue;
+ }
+ } else if (sfix->type == SF_NONBOOLEAN) {
+ if (strcmp(str_get(&sfix->nb_val),
+ sym_get_string_value(sfix->sym)) == 0) {
+ next = node->next;
+ sfix_list_delete(tmp, node);
+ node = next;
+ no_symbols_set++;
+ continue;
+ }
+ } else {
+ perror("Error applying fix. Value set for disallowed.");
+ }
+
+ /* could not set value, try next */
+ if (sfix->type == SF_BOOLEAN) {
+ if (!sym_set_tristate_value(sfix->sym,
+ sfix->tri)) {
+ node = node->next;
+ continue;
+ }
+ } else if (sfix->type == SF_NONBOOLEAN) {
+ if (!sym_set_string_value(
+ sfix->sym,
+ str_get(&sfix->nb_val))) {
+ node = node->next;
+ continue;
+ }
+ } else {
+ perror("Error applying fix. Value set for disallowed.");
+ }
+
+ /* could set value, remove from tmp */
+ manually_changed++;
+ if (sfix->type == SF_BOOLEAN) {
+ printd("%s set to %s.\n",
+ sym_get_name(sfix->sym),
+ tristate_get_char(sfix->tri));
+ } else if (sfix->type == SF_NONBOOLEAN) {
+ printd("%s set to %s.\n",
+ sym_get_name(sfix->sym),
+ str_get(&sfix->nb_val));
+ }
+
+ next = node->next;
+ sfix_list_delete(tmp, node);
+ node = next;
+ no_symbols_set++;
+ }
+
+ iterations++;
+ }
+
+ printd("Fixes successfully applied.\n");
+
+ return manually_changed;
+}
+
+/*
+ * stop RangeFix after the next iteration
+ */
+void interrupt_rangefix(void)
+{
+ stop_rangefix = true;
+}
+
+/*
+ * check whether all symbols are already within range
+ */
+static bool sdv_within_range(struct sdv_list *symbols)
+{
+ struct symbol_dvalue *sdv;
+ struct sdv_node *node;
+
+ sdv_list_for_each(node, symbols) {
+ sdv = node->elem;
+
+ assert(sym_is_boolean(sdv->sym));
+
+ if (sdv->tri == sym_get_tristate_value(sdv->sym))
+ continue;
+
+ if (!sym_tristate_within_range(sdv->sym, sdv->tri))
+ return false;
+ }
+
+ return true;
+}
+
+struct sfix_list *select_solution(struct sfl_list *solutions, int index)
+{
+ struct sfl_node *node = solutions->head;
+ unsigned int counter;
+
+ for (counter = 0; counter < index; counter++)
+ node = node->next;
+
+ return node->elem;
+}
+
+struct symbol_fix *select_symbol(struct sfix_list *solution, int index)
+{
+ struct sfix_node *node = solution->head;
+ unsigned int counter;
+
+ for (counter = 0; counter < index; counter++)
+ node = node->next;
+
+ return node->elem;
+}
diff --git a/scripts/kconfig/configfix.h b/scripts/kconfig/configfix.h
new file mode 100644
index 000000000000..8ebcc807da9d
--- /dev/null
+++ b/scripts/kconfig/configfix.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 Patrick Franz <deltaone@xxxxxxxxxx>
+ */
+
+#ifndef CONFIGFIX_H
+#define CONFIGFIX_H
+
+/* make functions accessible from xconfig */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* include internal definitions */
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+/* include own definitions */
+#include "cf_defs.h"
+
+/* include other header files needed */
+#include "picosat.h"
+#include "cf_constraints.h"
+#include "cf_expr.h"
+#include "cf_rangefix.h"
+#include "cf_utils.h"
+
+/* external functions */
+struct sfl_list *run_satconf(struct sdv_list *symbols);
+int apply_fix(struct sfix_list *fix);
+int run_satconf_cli(const char *Kconfig_file);
+void interrupt_rangefix(void);
+struct sfix_list *select_solution(struct sfl_list *solutions, int index);
+struct symbol_fix *select_symbol(struct sfix_list *solution, int index);
+
+/* make functions accessible from xconfig */
+#ifdef __cplusplus
+}
+#endif
+#endif
--
2.39.2
