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Sconfig: parse Kconfig options from devicetree.cb 

Mainboard and chip Kconfig files have several build options that
are redundant with information in devicetree.cb. This patch enables
sconfig to auto-generate equivalent configuration.

  sconfig -s

Generates mainboard's static.c file, as before.

  sconfig -b

This operation creates mainboard's bootblock init code. By default,
for every chip listed in mainboard/devicetree.cb, if there is a
chip/bootblock.c file, the init function is called.
A mainboard/bootblock.c file can be added to override default
behaviour.

  sconfig -k

This operation generates select -options for component paths.

Change-Id: I808d44af552dbc5e0565d6a0f4f72c7be9f5740e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/472
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Kyösti Mälkki 2011-12-05 20:33:55 +02:00 committed by Patrick Georgi
parent f28dbe0c5d
commit 472d9025e5
1 changed files with 137 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

175
util/sconfig/main.c
View File

@ -29,6 +29,14 @@ struct header headers;
static int devcount = 0; static int devcount = 0;
typedef enum {
STATIC_MODE,
BOOTBLOCK_MODE,
KCONFIG_MODE
} scan_t;
static scan_t scan_mode = STATIC_MODE;
static struct device root; static struct device root;
static struct device mainboard = { static struct device mainboard = {
.name = "mainboard", .name = "mainboard",
@ -116,21 +124,28 @@ void postprocess_devtree(void) {
} }
} }
void translate_name(char *str, int uppercase)
{
char *c;
for (c = str; *c; c++) {
if (*c == '/') *c = '_';
if (*c == '-') *c = '_';
if (uppercase)
*c = toupper(*c);
}
}
struct device *new_chip(struct device *parent, struct device *bus, char *path) { struct device *new_chip(struct device *parent, struct device *bus, char *path) {
struct device *new_chip = new_dev(parent, bus); struct device *new_chip = new_dev(parent, bus);
new_chip->chiph_exists = 1; new_chip->chiph_exists = 1;
new_chip->name = path; new_chip->name = path;
new_chip->name_underscore = strdup(new_chip->name); new_chip->name_underscore = strdup(new_chip->name);
char *c; translate_name(new_chip->name_underscore, 0);
for (c = new_chip->name_underscore; *c; c++) {
if (*c == '/') *c = '_';
if (*c == '-') *c = '_';
}
new_chip->type = chip; new_chip->type = chip;
new_chip->chip = new_chip; new_chip->chip = new_chip;
struct stat st; struct stat st;
char *chip_h = malloc(strlen(path)+12); char *chip_h = malloc(strlen(path)+18);
sprintf(chip_h, "src/%s", path); sprintf(chip_h, "src/%s", path);
if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) { if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) {
fprintf(stderr, "ERROR: Chip component %s does not exist.\n", fprintf(stderr, "ERROR: Chip component %s does not exist.\n",
@ -138,9 +153,15 @@ struct device *new_chip(struct device *parent, struct device *bus, char *path) {
exit(1); exit(1);
} }
sprintf(chip_h, "src/%s/chip.h", path); if (scan_mode == STATIC_MODE)
if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) sprintf(chip_h, "src/%s/chip.h", path);
new_chip->chiph_exists = 0; else if (scan_mode == BOOTBLOCK_MODE)
sprintf(chip_h, "src/%s/bootblock.c", path);
if ((scan_mode == STATIC_MODE) || (scan_mode == BOOTBLOCK_MODE)) {
if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
new_chip->chiph_exists = 0;
}
if (parent->latestchild) { if (parent->latestchild) {
parent->latestchild->next_sibling = new_chip; parent->latestchild->next_sibling = new_chip;
@ -153,7 +174,7 @@ struct device *new_chip(struct device *parent, struct device *bus, char *path) {
} }
void add_header(struct device *dev) { void add_header(struct device *dev) {
if (dev->chiph_exists) { if ((dev->chiph_exists) || (scan_mode == KCONFIG_MODE)){
int include_exists = 0; int include_exists = 0;
struct header *h = &headers; struct header *h = &headers;
while (h->next) { while (h->next) {
@ -399,7 +420,8 @@ static void pass1(FILE *fil, struct device *ptr) {
} }
if ((ptr->type == chip) && (ptr->chiph_exists)) { if ((ptr->type == chip) && (ptr->chiph_exists)) {
if (ptr->reg) { if (ptr->reg) {
fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id); fprintf(fil, "struct %s_config %s_info_%d\t= {\n",
ptr->name_underscore, ptr->name_underscore, ptr->id);
struct reg *r = ptr->reg; struct reg *r = ptr->reg;
while (r) { while (r) {
fprintf(fil, "\t.%s = %s,\n", r->key, r->value); fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
@ -407,7 +429,8 @@ static void pass1(FILE *fil, struct device *ptr) {
} }
fprintf(fil, "};\n\n"); fprintf(fil, "};\n\n");
} else { } else {
fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id); fprintf(fil, "struct %s_config %s_info_%d;\n",
ptr->name_underscore, ptr->name_underscore, ptr->id);
} }
} }
} }
@ -441,22 +464,60 @@ static void inherit_subsystem_ids(FILE *file, struct device *dev)
} }
} }
static void usage(void)
{
printf("usage: sconfig vendor/mainboard outputdir [-{s|b|k} outputfile]\n");
printf("\t-s file\tcreate ramstage static device map\n");
printf("\t-b file\tcreate bootblock init_mainboard()\n");
printf("\t-k file\tcreate Kconfig devicetree section\n");
printf("Defaults to \"-s static.c\" if no {s|b|k} specified.\n");
exit (1);
}
int main(int argc, char** argv) { int main(int argc, char** argv) {
if (argc != 3) { if (argc < 3)
printf("usage: sconfig vendor/mainboard outputdir\n"); usage();
return 1;
}
char *mainboard=argv[1]; char *mainboard=argv[1];
char *outputdir=argv[2]; char *outputdir=argv[2];
char *devtree=malloc(strlen(mainboard)+30); char *devtree=malloc(strlen(mainboard)+30);
char *outputc=malloc(strlen(outputdir)+10);
sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard); sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
sprintf(outputc, "%s/static.c", outputdir); char *outputc;
headers.next = malloc(sizeof(struct header)); if (argc == 3) {
headers.next->name = malloc(strlen(mainboard)+12); scan_mode = STATIC_MODE;
headers.next->next = 0; outputc=malloc(strlen(outputdir)+20);
sprintf(headers.next->name, "mainboard/%s", mainboard); sprintf(outputc, "%s/static.c", outputdir);
} else if ((argc == 5) && (argv[3][0] == '-') && (argv[3][2] == 0)) {
switch (argv[3][1]) {
case 's':
scan_mode = STATIC_MODE;
break;
case 'b':
scan_mode = BOOTBLOCK_MODE;
break;
case 'k':
scan_mode = KCONFIG_MODE;
break;
default:
usage();
break;
}
char *outputfile=argv[4];
outputc=malloc(strlen(outputdir)+strlen(outputfile)+2);
sprintf(outputc, "%s/%s", outputdir, outputfile);
}
headers.next = 0;
if (scan_mode == STATIC_MODE) {
headers.next = malloc(sizeof(struct header));
headers.next->name = malloc(strlen(mainboard)+12);
headers.next->next = 0;
sprintf(headers.next->name, "mainboard/%s", mainboard);
}
FILE *filec = fopen(devtree, "r"); FILE *filec = fopen(devtree, "r");
if (!filec) { if (!filec) {
@ -479,29 +540,67 @@ int main(int argc, char** argv) {
while (head->next != tmp) head = head->next; while (head->next != tmp) head = head->next;
} }
FILE *staticc = fopen(outputc, "w"); FILE *autogen = fopen(outputc, "w");
if (!staticc) { if (!autogen) {
fprintf(stderr, "Could not open file '%s' for writing: ", outputc); fprintf(stderr, "Could not open file '%s' for writing: ", outputc);
perror(NULL); perror(NULL);
exit(1); exit(1);
} }
fprintf(staticc, "#include <device/device.h>\n"); struct header *h;
fprintf(staticc, "#include <device/pci.h>\n"); if (scan_mode == STATIC_MODE) {
struct header *h = &headers;
while (h->next) { fprintf(autogen, "#include <device/device.h>\n");
h = h->next; fprintf(autogen, "#include <device/pci.h>\n");
fprintf(staticc, "#include \"%s/chip.h\"\n", h->name); h = &headers;
while (h->next) {
h = h->next;
fprintf(autogen, "#include \"%s/chip.h\"\n", h->name);
}
walk_device_tree(autogen, &root, inherit_subsystem_ids, NULL);
fprintf(autogen, "\n/* pass 0 */\n");
walk_device_tree(autogen, &root, pass0, NULL);
fprintf(autogen, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\n"
"struct device *last_dev = &%s;\n", lastdev->name);
walk_device_tree(autogen, &root, pass1, NULL);
} else if (scan_mode == BOOTBLOCK_MODE) {
h = &headers;
while (h->next) {
h = h->next;
fprintf(autogen, "#include \"%s/bootblock.c\"\n", h->name);
}
fprintf(autogen, "\n#if CONFIG_HAS_MAINBOARD_BOOTBLOCK\n");
fprintf(autogen, "#include \"mainboard/%s/bootblock.c\"\n", mainboard);
fprintf(autogen, "#else\n");
fprintf(autogen, "static unsigned long init_mainboard(int bsp_cpu)\n{\n");
fprintf(autogen, "\tif (! bsp_cpu) return 0;\n");
h = &headers;
while (h->next) {
h = h->next;
translate_name(h->name, 0);
fprintf(autogen, "\tinit_%s();\n", h->name);
}
fprintf(autogen, "\treturn 0;\n}\n");
fprintf(autogen, "#endif\n");
} else if (scan_mode == KCONFIG_MODE) {
fprintf(autogen, "\nconfig MAINBOARD_DIR\n\tstring\n");
fprintf(autogen, "\tdefault %s\n", mainboard);
fprintf(autogen, "\nconfig MAINBOARD_DEVTREE\n\tdef_bool y\n");
h = &headers;
while (h->next) {
h = h->next;
translate_name(h->name, 1);
fprintf(autogen, "\tselect %s\n", h->name);
}
} }
walk_device_tree(staticc, &root, inherit_subsystem_ids, NULL); fclose(autogen);
fprintf(staticc, "\n/* pass 0 */\n");
walk_device_tree(staticc, &root, pass0, NULL);
fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device *last_dev = &%s;\n", lastdev->name);
walk_device_tree(staticc, &root, pass1, NULL);
fclose(staticc);
return 0; return 0;
} }