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sconfig: Split up sconfig-generated static.h 

Currently sconfig generates a `static.h` to accompany
`static.c`. However, some payloads may decide they would like to consume
the FW_CONFIG macros as well. The current state of `static.h` makes this
impossible (relying on `device/device.h`).

This patch splits up `static.h` into 3 files: `static.h,
`static_devices.h`, and `static_fw_config.h`. `static.h` simply includes
the other two `.h` files to ensure no changes are needed to other
code. `static_devices.h` contains the extern'd definitions of the device
names recently introduced to sconfig.  `static_fw_config.h` contains the
FW_CONFIG_FIELD_* macros only, which makes it easily consumable by a
payload which wishes to use FW_CONFIG.

Also refactor the generation of all these output files, as the code was
getting messy.

Change-Id: Ie0f4520ee055528c7be84d1d1e2dcea113ea8b5f
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45667
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
This commit is contained in:
Tim Wawrzynczak 2020-09-23 15:36:30 -06:00 committed by Patrick Georgi
parent 8ae391d199
commit ba4a4909a8
2 changed files with 110 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Makefile.inc
View File

@ -611,6 +611,12 @@ SCONFIG_OPTIONS += --output_c=$(DEVICETREE_STATIC_C)
DEVICETREE_STATIC_H := $(obj)/static.h
SCONFIG_OPTIONS += --output_h=$(DEVICETREE_STATIC_H)
DEVICETREE_DEVICENAMES_H := $(obj)/static_devices.h
SCONFIG_OPTIONS += --output_d=$(DEVICETREE_DEVICENAMES_H)
DEVICETREE_FWCONFIG_H := $(obj)/static_fw_config.h
SCONFIG_OPTIONS += --output_f=$(DEVICETREE_FWCONFIG_H)
$(DEVICETREE_STATIC_C): $(DEVICETREE_FILE) $(OVERRIDE_DEVICETREE_FILE) $(CHIPSET_DEVICETREE_FILE) $(objutil)/sconfig/sconfig
@printf " SCONFIG $(subst $(src)/,,$(<))\n"
mkdir -p $(dir $(DEVICETREE_STATIC_C))

131
util/sconfig/main.c
View File

@ -1,9 +1,11 @@
/* sconfig, coreboot device tree compiler */
/* SPDX-License-Identifier: GPL-2.0-only */
#include <assert.h>
#include <ctype.h>
#include <getopt.h>
/* stat.h needs to be included before commonlib/helpers.h to avoid errors.*/
#include <libgen.h>
#include <sys/stat.h>
#include <commonlib/helpers.h>
#include <stdint.h>
@ -528,9 +530,6 @@ static void emit_fw_config(FILE *fil)
if (!field)
return;
fprintf(fil, "\n/* firmware configuration */\n");
fprintf(fil, "#include <fw_config.h>\n");
while (field) {
struct fw_config_option *option = field->options;
uint32_t mask;
@ -1094,7 +1093,8 @@ static void pass1(FILE *fil, FILE *head, struct device *ptr, struct device *next
/* Emit probe structures. */
if (ptr->probe && (emit_fw_config_probe(fil, ptr) < 0)) {
fclose(head);
if (head)
fclose(head);
fclose(fil);
exit(1);
}
@ -1355,9 +1355,12 @@ static void usage(void)
printf("usage: sconfig <options>\n");
printf(" -c | --output_c : Path to output static.c file (required)\n");
printf(" -r | --output_h : Path to header static.h file (required)\n");
printf(" -d | --output_d : Path to header static_devices.h file (required)\n");
printf(" -f | --output_f : Path to header static_fw_config.h file (required)\n");
printf(" -m | --mainboard_devtree : Path to mainboard devicetree file (required)\n");
printf(" -o | --override_devtree : Path to override devicetree file (optional)\n");
printf(" -p | --chipset_devtree : Path to chipset/SOC devicetree file (optional)\n");
exit(1);
}
@ -1721,6 +1724,54 @@ static void parse_override_devicetree(const char *file, struct device *dev)
override_devicetree(&base_root_bus, dev->bus);
}
static void generate_outputh(FILE *f, const char *fw_conf_header, const char *device_header)
{
fprintf(f, "#ifndef __STATIC_DEVICE_TREE_H\n");
fprintf(f, "#define __STATIC_DEVICE_TREE_H\n\n");
fprintf(f, "#include <%s>\n", fw_conf_header);
fprintf(f, "#include <%s>\n\n", device_header);
fprintf(f, "\n#endif /* __STATIC_DEVICE_TREE_H */\n");
}
static void generate_outputc(FILE *f, const char *static_header)
{
fprintf(f, "#include <device/device.h>\n");
fprintf(f, "#include <device/pci.h>\n");
fprintf(f, "#include <fw_config.h>\n");
fprintf(f, "#include <%s>\n", static_header);
emit_chip_headers(f, chip_header.next);
fprintf(f, "\n#define STORAGE static __unused DEVTREE_CONST\n\n");
walk_device_tree(NULL, NULL, &base_root_dev, inherit_subsystem_ids);
fprintf(f, "\n/* pass 0 */\n");
walk_device_tree(f, NULL, &base_root_dev, pass0);
walk_device_tree(NULL, NULL, &base_root_dev, update_references);
fprintf(f, "\n/* chip configs */\n");
emit_chip_configs(f);
fprintf(f, "\n/* pass 1 */\n");
walk_device_tree(f, NULL, &base_root_dev, pass1);
}
static void generate_outputd(FILE *gen, FILE *dev)
{
fprintf(dev, "#ifndef __STATIC_DEVICES_H\n");
fprintf(dev, "#define __STATIC_DEVICES_H\n\n");
fprintf(dev, "#include <device/device.h>\n\n");
fprintf(dev, "/* expose_device_names */\n");
walk_device_tree(gen, dev, &base_root_dev, expose_device_names);
fprintf(dev, "\n#endif /* __STATIC_DEVICE_NAMES_H */\n");
}
static void generate_outputf(FILE *f)
{
fprintf(f, "#ifndef __STATIC_FW_CONFIG_H\n");
fprintf(f, "#define __STATIC_FW_CONFIG_H\n\n");
emit_fw_config(f);
fprintf(f, "\n#endif /* __STATIC_FW_CONFIG_H */\n");
}
int main(int argc, char **argv)
{
static const struct option long_options[] = {
@ -1729,6 +1780,8 @@ int main(int argc, char **argv)
{ "chipset_devtree", 1, NULL, 'p' },
{ "output_c", 1, NULL, 'c' },
{ "output_h", 1, NULL, 'r' },
{ "output_d", 1, NULL, 'd' },
{ "output_f", 1, NULL, 'f' },
{ "help", 1, NULL, 'h' },
{ }
};
@ -1737,9 +1790,11 @@ int main(int argc, char **argv)
const char *chipset_devtree = NULL;
const char *outputc = NULL;
const char *outputh = NULL;
const char *outputd = NULL;
const char *outputf = NULL;
int opt, option_index;
while ((opt = getopt_long(argc, argv, "m:o:p:c:r:h", long_options,
while ((opt = getopt_long(argc, argv, "m:o:p:c:r:d:f:h", long_options,
&option_index)) != EOF) {
switch (opt) {
case 'm':
@ -1757,13 +1812,19 @@ int main(int argc, char **argv)
case 'r':
outputh = strdup(optarg);
break;
case 'd':
outputd = strdup(optarg);
break;
case 'f':
outputf = strdup(optarg);
break;
case 'h':
default:
usage();
}
}
if (!base_devtree || !outputc || !outputh)
if (!base_devtree || !outputc || !outputh || !outputd || !outputf)
usage();
if (chipset_devtree) {
@ -1793,33 +1854,49 @@ int main(int argc, char **argv)
fclose(autogen);
exit(1);
}
fprintf(autohead, "#ifndef __STATIC_DEVICE_TREE_H\n");
fprintf(autohead, "#define __STATIC_DEVICE_TREE_H\n\n");
fprintf(autohead, "#include <device/device.h>\n\n");
emit_fw_config(autohead);
fprintf(autogen, "#include <device/device.h>\n");
fprintf(autogen, "#include <device/pci.h>\n\n");
fprintf(autogen, "#include <static.h>\n");
emit_chip_headers(autogen, chip_header.next);
fprintf(autogen, "\n#define STORAGE static __unused DEVTREE_CONST\n\n");
FILE *autodev = fopen(outputd, "w");
if (!autodev) {
fprintf(stderr, "Could not open file '%s' for writing: ", outputd);
perror(NULL);
fclose(autogen);
fclose(autohead);
exit(1);
}
walk_device_tree(autogen, autohead, &base_root_dev, inherit_subsystem_ids);
fprintf(autogen, "\n/* pass 0 */\n");
walk_device_tree(autogen, autohead, &base_root_dev, pass0);
walk_device_tree(autogen, autohead, &base_root_dev, update_references);
fprintf(autogen, "\n/* chip configs */\n");
emit_chip_configs(autogen);
fprintf(autogen, "\n/* pass 1 */\n");
walk_device_tree(autogen, autohead, &base_root_dev, pass1);
FILE *autofwconf = fopen(outputf, "w");
if (!autofwconf) {
fprintf(stderr, "Could not open file '%s' for writing: ", outputf);
perror(NULL);
fclose(autogen);
fclose(autohead);
fclose(autodev);
exit(1);
}
/* Expose static devicenames to global namespace. */
fprintf(autogen, "\n/* expose_device_names */\n");
walk_device_tree(autogen, autohead, &base_root_dev, expose_device_names);
char *f = strdup(outputf);
assert(f);
char *d = strdup(outputd);
assert(d);
char *h = strdup(outputh);
assert(h);
const char *fw_conf_header = basename(f);
const char *device_header = basename(d);
const char *static_header = basename(h);
generate_outputh(autohead, fw_conf_header, device_header);
generate_outputc(autogen, static_header);
generate_outputd(autogen, autodev);
generate_outputf(autofwconf);
fprintf(autohead, "\n#endif /* __STATIC_DEVICE_TREE_H */\n");
fclose(autohead);
fclose(autogen);
fclose(autodev);
fclose(autofwconf);
free(f);
free(d);
free(h);
return 0;
}