1390 lines
38 KiB
C
1390 lines
38 KiB
C
/*
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* sconfig, coreboot device tree compiler
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*
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* Copyright (C) 2010 coresystems GmbH
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* written by Patrick Georgi <patrick@georgi-clan.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <ctype.h>
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#include "sconfig.h"
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#include "sconfig.tab.h"
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extern int linenum;
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/*
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* Maintains list of all the unique chip structures for the board.
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* This is shared across base and override device trees since we need to
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* generate headers for all chips added by both the trees.
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*/
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static struct chip chip_header;
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/*
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* This is intentionally shared between chip and device structure ids because it
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* is easier to track the order of parsing for chip and device.
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*/
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static int count = 0;
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typedef enum {
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UNSLASH,
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SPLIT_1ST,
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TO_LOWER,
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TO_UPPER,
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} translate_t;
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/*
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* Mainboard is assumed to have a root device whose bus is the parent of all the
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* devices that are added by parsing the devicetree file. This device has a
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* mainboard chip instance associated with it.
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*
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*
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*
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* +------------------------+ +----------------------+
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* | Root device | | Mainboard |
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* +---------+ (base_root_dev) +--------------->+ instance +
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* | | | chip_instance | (mainboard_instance)|
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* | +------------------------+ | |
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* | | +----------------------+
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* | | bus |
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* | parent v |
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* | +-------------------+ |
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* | | Root bus | |
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* +----------->+ (base_root_bus) | |
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* | | |
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* +-------------------+ |
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* | |
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* | children | chip
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* v |
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* X |
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* (new devices will |
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* be added here as |
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* children) |
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* |
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* |
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* |
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* +-------+----------+
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* | |
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* | Mainboard chip +----------->X (new chips will be
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* | (mainboard_chip) | added here)
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* | |
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* +------------------+
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*
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*
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*/
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/* Root device of primary tree. */
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static struct device base_root_dev;
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/* Root device of override tree (if applicable). */
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static struct device override_root_dev;
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static struct chip_instance mainboard_instance;
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static struct bus base_root_bus = {
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.id = 0,
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.dev = &base_root_dev,
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};
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static struct device base_root_dev = {
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.name = "dev_root",
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.id = 0,
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.chip_instance = &mainboard_instance,
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.path = " .type = DEVICE_PATH_ROOT ",
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.parent = &base_root_bus,
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.enabled = 1,
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.bus = &base_root_bus,
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};
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static struct bus override_root_bus = {
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.id = 0,
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.dev = &override_root_dev,
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};
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static struct device override_root_dev = {
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.name = "override_root",
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.id = 0,
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/*
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* Override tree root device points to the same mainboard chip instance
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* as the base tree root device. It should not cause any side-effects
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* since the mainboard chip instance pointer in override tree will just
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* be ignored.
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*/
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.chip_instance = &mainboard_instance,
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.path = " .type = DEVICE_PATH_ROOT ",
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.parent = &override_root_bus,
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.enabled = 1,
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.bus = &override_root_bus,
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};
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static struct chip mainboard_chip = {
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.name = "mainboard",
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.name_underscore = "mainboard",
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.instance = &mainboard_instance,
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};
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static struct chip_instance mainboard_instance = {
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.id = 0,
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.chip = &mainboard_chip,
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.ref_count = 2,
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};
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/* This is the parent of all devices added by parsing the devicetree file. */
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struct bus *root_parent;
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struct queue_entry {
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void *data;
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struct queue_entry *next;
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struct queue_entry *prev;
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};
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#define S_ALLOC(_s) s_alloc(__func__, _s)
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static void *s_alloc(const char *f, size_t s)
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{
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void *data = calloc(1, s);
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if (!data) {
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fprintf(stderr, "%s: Failed to alloc mem!\n", f);
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exit(1);
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}
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return data;
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}
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static struct queue_entry *new_queue_entry(void *data)
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{
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struct queue_entry *e = S_ALLOC(sizeof(*e));
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e->data = data;
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e->next = e->prev = e;
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return e;
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}
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static void enqueue_tail(struct queue_entry **q_head, void *data)
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{
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struct queue_entry *tmp = new_queue_entry(data);
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struct queue_entry *q = *q_head;
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if (!q) {
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*q_head = tmp;
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return;
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}
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q->prev->next = tmp;
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tmp->prev = q->prev;
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q->prev = tmp;
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tmp->next = q;
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}
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static void *dequeue_tail(struct queue_entry **q_head)
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{
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struct queue_entry *q = *q_head;
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struct queue_entry *tmp;
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void *data;
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if (!q)
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return NULL;
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tmp = q->prev;
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if (tmp == q)
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*q_head = NULL;
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else {
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tmp->prev->next = q;
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q->prev = tmp->prev;
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}
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data = tmp->data;
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free(tmp);
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return data;
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}
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static void *dequeue_head(struct queue_entry **q_head)
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{
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struct queue_entry *q = *q_head;
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struct queue_entry *tmp = q;
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void *data;
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if (!q)
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return NULL;
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if (q->next == q)
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*q_head = NULL;
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else {
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q->next->prev = q->prev;
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q->prev->next = q->next;
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*q_head = q->next;
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}
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data = tmp->data;
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free(tmp);
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return data;
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}
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static void *peek_queue_head(struct queue_entry *q_head)
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{
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if (!q_head)
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return NULL;
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return q_head->data;
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}
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static struct queue_entry *chip_q_head;
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void chip_enqueue_tail(void *data)
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{
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enqueue_tail(&chip_q_head, data);
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}
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void *chip_dequeue_tail(void)
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{
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return dequeue_tail(&chip_q_head);
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}
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int yywrap(void)
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{
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return 1;
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}
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void yyerror(char const *str)
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{
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extern char *yytext;
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fprintf(stderr, "line %d: %s: %s\n", linenum + 1, yytext, str);
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exit(1);
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}
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char *translate_name(const char *str, translate_t mode)
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{
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char *b, *c;
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b = c = strdup(str);
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while (c && *c) {
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if ((mode == SPLIT_1ST) && (*c == '/')) {
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*c = 0;
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break;
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}
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if (*c == '/')
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*c = '_';
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if (*c == '-')
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*c = '_';
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if (mode == TO_UPPER)
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*c = toupper(*c);
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if (mode == TO_LOWER)
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*c = tolower(*c);
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c++;
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}
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return b;
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}
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static struct chip *get_chip(char *path)
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{
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struct chip *h = &chip_header;
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while (h->next) {
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int result = strcmp(path, h->next->name);
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if (result == 0)
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return h->next;
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if (result < 0)
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break;
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h = h->next;
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}
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struct chip *new_chip = S_ALLOC(sizeof(struct chip));
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new_chip->next = h->next;
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h->next = new_chip;
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new_chip->chiph_exists = 1;
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new_chip->name = path;
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new_chip->name_underscore = translate_name(path, UNSLASH);
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struct stat st;
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char *chip_h = S_ALLOC(strlen(path) + 18);
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sprintf(chip_h, "src/%s", path);
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if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) {
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/* root_complex gets away without a separate directory, but
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* exists on on pretty much all AMD chipsets.
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*/
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if (!strstr(path, "/root_complex")) {
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fprintf(stderr, "ERROR: Chip component %s does not exist.\n",
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path);
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exit(1);
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}
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}
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sprintf(chip_h, "src/%s/chip.h", path);
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if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
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new_chip->chiph_exists = 0;
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free(chip_h);
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return new_chip;
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}
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struct chip_instance *new_chip_instance(char *path)
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{
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struct chip *chip = get_chip(path);
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struct chip_instance *instance = S_ALLOC(sizeof(*instance));
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instance->id = ++count;
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instance->chip = chip;
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instance->next = chip->instance;
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chip->instance = instance;
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return instance;
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}
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static void delete_chip_instance(struct chip_instance *ins)
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{
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if (ins->ref_count == 0) {
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printf("ERROR: ref count for chip instance is zero!!\n");
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exit(1);
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}
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if (--ins->ref_count)
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return;
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struct chip *c = ins->chip;
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/* Get pointer to first instance of the chip. */
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struct chip_instance *i = c->instance;
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/*
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* If chip instance to be deleted is the first instance, then update
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* instance pointer of the chip as well.
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*/
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if (i == ins) {
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c->instance = ins->next;
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free(ins);
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return;
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}
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/*
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* Loop through the instances list of the chip to find and remove the
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* given instance.
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*/
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while (1) {
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if (i == NULL) {
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printf("ERROR: chip instance not found!\n");
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exit(1);
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}
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if (i->next != ins) {
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i = i->next;
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continue;
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}
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i->next = ins->next;
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break;
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}
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free(ins);
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}
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/*
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* Allocate a new bus for the provided device.
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* - If this is the first bus being allocated under this device, then its id
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* is set to 0 and bus and last_bus are pointed to the newly allocated bus.
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* - If this is not the first bus under this device, then its id is set to 1
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* plus the id of last bus and newly allocated bus is added to the list of
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* buses under the device. last_bus is updated to point to the newly
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* allocated bus.
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*/
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static void alloc_bus(struct device *dev)
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{
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struct bus *bus = S_ALLOC(sizeof(*bus));
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bus->dev = dev;
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if (dev->last_bus == NULL) {
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bus->id = 0;
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dev->bus = bus;
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} else {
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bus->id = dev->last_bus->id + 1;
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dev->last_bus->next_bus = bus;
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}
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dev->last_bus = bus;
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}
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/*
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* Allocate a new device under the given parent. This function allocates a new
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* device structure under the provided parent bus and allocates a bus structure
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* under the newly allocated device.
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*/
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static struct device *alloc_dev(struct bus *parent)
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{
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struct device *dev = S_ALLOC(sizeof(*dev));
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dev->id = ++count;
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dev->parent = parent;
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dev->subsystem_vendor = -1;
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dev->subsystem_device = -1;
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alloc_bus(dev);
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return dev;
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}
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/*
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* This function scans the children of given bus to see if any device matches
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* the new device that is requested.
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*
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* Returns pointer to the node if found, else NULL.
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*/
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static struct device *get_dev(struct bus *parent, int path_a, int path_b,
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int bustype, struct chip_instance *chip_instance)
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{
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struct device *child = parent->children;
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while (child) {
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if ((child->path_a == path_a) && (child->path_b == path_b) &&
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(child->bustype == bustype) &&
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(child->chip_instance == chip_instance))
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return child;
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child = child->sibling;
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}
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return NULL;
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}
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/*
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* Add given node as child of the provided parent. If this is the first child of
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* the parent, update parent->children pointer as well.
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*/
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static void set_new_child(struct bus *parent, struct device *child)
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{
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struct device *c = parent->children;
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if (c) {
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while (c->sibling)
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c = c->sibling;
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c->sibling = child;
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} else
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parent->children = child;
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child->sibling = NULL;
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child->parent = parent;
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}
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struct device *new_device(struct bus *parent,
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struct chip_instance *chip_instance,
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const int bustype, const char *devnum,
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int status)
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{
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char *tmp;
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int path_a;
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int path_b = 0;
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struct device *new_d;
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path_a = strtol(devnum, &tmp, 16);
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if (*tmp == '.') {
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tmp++;
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path_b = strtol(tmp, NULL, 16);
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}
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/* If device is found under parent, no need to allocate new device. */
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new_d = get_dev(parent, path_a, path_b, bustype, chip_instance);
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if (new_d) {
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alloc_bus(new_d);
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return new_d;
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}
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new_d = alloc_dev(parent);
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new_d->bustype = bustype;
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new_d->path_a = path_a;
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new_d->path_b = path_b;
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char *name = S_ALLOC(10);
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sprintf(name, "_dev%d", new_d->id);
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new_d->name = name;
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new_d->enabled = status & 0x01;
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new_d->hidden = (status >> 1) & 0x01;
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new_d->chip_instance = chip_instance;
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chip_instance->ref_count++;
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set_new_child(parent, new_d);
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switch (bustype) {
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case PCI:
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new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
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break;
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case PNP:
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new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
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break;
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case I2C:
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new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x, .mode_10bit = %d }}";
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break;
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case APIC:
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new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
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break;
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case CPU_CLUSTER:
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new_d->path = ".type=DEVICE_PATH_CPU_CLUSTER,{.cpu_cluster={ .cluster = 0x%x }}";
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break;
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case CPU:
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new_d->path = ".type=DEVICE_PATH_CPU,{.cpu={ .id = 0x%x }}";
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break;
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case DOMAIN:
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new_d->path = ".type=DEVICE_PATH_DOMAIN,{.domain={ .domain = 0x%x }}";
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break;
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case IOAPIC:
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new_d->path = ".type=DEVICE_PATH_IOAPIC,{.ioapic={ .ioapic_id = 0x%x }}";
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break;
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case GENERIC:
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new_d->path = ".type=DEVICE_PATH_GENERIC,{.generic={ .id = 0x%x, .subid = 0x%x }}";
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break;
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case SPI:
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new_d->path = ".type=DEVICE_PATH_SPI,{.spi={ .cs = 0x%x }}";
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break;
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case USB:
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new_d->path = ".type=DEVICE_PATH_USB,{.usb={ .port_type = %d, .port_id = %d }}";
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break;
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case MMIO:
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new_d->path = ".type=DEVICE_PATH_MMIO,{.mmio={ .addr = 0x%x }}";
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break;
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}
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|
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return new_d;
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}
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|
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static void new_resource(struct device *dev, int type, int index, int base)
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|
{
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struct resource *r = S_ALLOC(sizeof(struct resource));
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|
|
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r->type = type;
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r->index = index;
|
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r->base = base;
|
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if (dev->res) {
|
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struct resource *head = dev->res;
|
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while (head->next)
|
|
head = head->next;
|
|
head->next = r;
|
|
} else {
|
|
dev->res = r;
|
|
}
|
|
}
|
|
|
|
void add_resource(struct bus *bus, int type, int index, int base)
|
|
{
|
|
new_resource(bus->dev, type, index, base);
|
|
}
|
|
|
|
void add_register(struct chip_instance *chip_instance, char *name, char *val)
|
|
{
|
|
struct reg *r = S_ALLOC(sizeof(struct reg));
|
|
|
|
r->key = name;
|
|
r->value = val;
|
|
if (chip_instance->reg) {
|
|
struct reg *head = chip_instance->reg;
|
|
// sorting to be equal to sconfig's behaviour
|
|
int sort = strcmp(r->key, head->key);
|
|
if (sort == 0) {
|
|
printf("ERROR: duplicate 'register' key.\n");
|
|
exit(1);
|
|
}
|
|
if (sort < 0) {
|
|
r->next = head;
|
|
chip_instance->reg = r;
|
|
} else {
|
|
while ((head->next)
|
|
&& (strcmp(head->next->key, r->key) < 0))
|
|
head = head->next;
|
|
r->next = head->next;
|
|
head->next = r;
|
|
}
|
|
} else {
|
|
chip_instance->reg = r;
|
|
}
|
|
}
|
|
|
|
void add_slot_desc(struct bus *bus, char *type, char *length, char *designation,
|
|
char *data_width)
|
|
{
|
|
struct device *dev = bus->dev;
|
|
|
|
if (dev->bustype != PCI && dev->bustype != DOMAIN) {
|
|
printf("ERROR: 'slot_type' only allowed for PCI devices\n");
|
|
exit(1);
|
|
}
|
|
|
|
dev->smbios_slot_type = type;
|
|
dev->smbios_slot_length = length;
|
|
dev->smbios_slot_data_width = data_width;
|
|
dev->smbios_slot_designation = designation;
|
|
}
|
|
|
|
void add_pci_subsystem_ids(struct bus *bus, int vendor, int device,
|
|
int inherit)
|
|
{
|
|
struct device *dev = bus->dev;
|
|
|
|
if (dev->bustype != PCI && dev->bustype != DOMAIN) {
|
|
printf("ERROR: 'subsystem' only allowed for PCI devices\n");
|
|
exit(1);
|
|
}
|
|
|
|
dev->subsystem_vendor = vendor;
|
|
dev->subsystem_device = device;
|
|
dev->inherit_subsystem = inherit;
|
|
}
|
|
|
|
void add_ioapic_info(struct bus *bus, int apicid, const char *_srcpin,
|
|
int irqpin)
|
|
{
|
|
int srcpin;
|
|
struct device *dev = bus->dev;
|
|
|
|
if (!_srcpin || strlen(_srcpin) < 4 || strncasecmp(_srcpin, "INT", 3) ||
|
|
_srcpin[3] < 'A' || _srcpin[3] > 'D') {
|
|
printf("ERROR: malformed ioapic_irq args: %s\n", _srcpin);
|
|
exit(1);
|
|
}
|
|
|
|
srcpin = _srcpin[3] - 'A';
|
|
|
|
if (dev->bustype != PCI && dev->bustype != DOMAIN) {
|
|
printf("ERROR: ioapic config only allowed for PCI devices\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (srcpin > 3) {
|
|
printf("ERROR: srcpin '%d' invalid\n", srcpin);
|
|
exit(1);
|
|
}
|
|
dev->pci_irq_info[srcpin].ioapic_irq_pin = irqpin;
|
|
dev->pci_irq_info[srcpin].ioapic_dst_id = apicid;
|
|
}
|
|
|
|
static int dev_has_children(struct device *dev)
|
|
{
|
|
struct bus *bus = dev->bus;
|
|
|
|
while (bus) {
|
|
if (bus->children)
|
|
return 1;
|
|
bus = bus->next_bus;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pass0(FILE *fil, struct device *ptr, struct device *next)
|
|
{
|
|
if (ptr == &base_root_dev) {
|
|
fprintf(fil, "STORAGE struct bus %s_links[];\n",
|
|
ptr->name);
|
|
return;
|
|
}
|
|
|
|
fprintf(fil, "STORAGE struct device %s;\n", ptr->name);
|
|
if (ptr->res)
|
|
fprintf(fil, "STORAGE struct resource %s_res[];\n",
|
|
ptr->name);
|
|
if (dev_has_children(ptr))
|
|
fprintf(fil, "STORAGE struct bus %s_links[];\n",
|
|
ptr->name);
|
|
|
|
if (next)
|
|
return;
|
|
|
|
fprintf(fil,
|
|
"DEVTREE_CONST struct device * DEVTREE_CONST last_dev = &%s;\n",
|
|
ptr->name);
|
|
}
|
|
|
|
static void emit_resources(FILE *fil, struct device *ptr)
|
|
{
|
|
if (ptr->res == NULL)
|
|
return;
|
|
|
|
int i = 1;
|
|
fprintf(fil, "STORAGE struct resource %s_res[] = {\n", ptr->name);
|
|
struct resource *r = ptr->res;
|
|
while (r) {
|
|
fprintf(fil,
|
|
"\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
|
|
if (r->type == IRQ)
|
|
fprintf(fil, "IRQ");
|
|
if (r->type == DRQ)
|
|
fprintf(fil, "DRQ");
|
|
if (r->type == IO)
|
|
fprintf(fil, "IO");
|
|
fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index,
|
|
r->base);
|
|
if (r->next)
|
|
fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name,
|
|
i++);
|
|
else
|
|
fprintf(fil, ".next=NULL },\n");
|
|
r = r->next;
|
|
}
|
|
|
|
fprintf(fil, "\t };\n");
|
|
}
|
|
|
|
static void emit_bus(FILE *fil, struct bus *bus)
|
|
{
|
|
fprintf(fil, "\t\t[%d] = {\n", bus->id);
|
|
fprintf(fil, "\t\t\t.link_num = %d,\n", bus->id);
|
|
fprintf(fil, "\t\t\t.dev = &%s,\n", bus->dev->name);
|
|
if (bus->children)
|
|
fprintf(fil, "\t\t\t.children = &%s,\n", bus->children->name);
|
|
|
|
if (bus->next_bus)
|
|
fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", bus->dev->name,
|
|
bus->id + 1);
|
|
else
|
|
fprintf(fil, "\t\t\t.next = NULL,\n");
|
|
fprintf(fil, "\t\t},\n");
|
|
}
|
|
|
|
static void emit_dev_links(FILE *fil, struct device *ptr)
|
|
{
|
|
fprintf(fil, "STORAGE struct bus %s_links[] = {\n",
|
|
ptr->name);
|
|
|
|
struct bus *bus = ptr->bus;
|
|
|
|
while (bus) {
|
|
emit_bus(fil, bus);
|
|
bus = bus->next_bus;
|
|
}
|
|
|
|
fprintf(fil, "\t};\n");
|
|
}
|
|
|
|
static void pass1(FILE *fil, struct device *ptr, struct device *next)
|
|
{
|
|
int pin;
|
|
struct chip_instance *chip_ins = ptr->chip_instance;
|
|
int has_children = dev_has_children(ptr);
|
|
|
|
if (ptr == &base_root_dev)
|
|
fprintf(fil, "DEVTREE_CONST struct device %s = {\n", ptr->name);
|
|
else
|
|
fprintf(fil, "STORAGE struct device %s = {\n", ptr->name);
|
|
|
|
fprintf(fil, "#if !DEVTREE_EARLY\n");
|
|
|
|
/*
|
|
* ops field is set to default_dev_ops_root only for the root
|
|
* device. For all other devices, it is set by the driver at runtime.
|
|
*/
|
|
if (ptr == &base_root_dev)
|
|
fprintf(fil, "\t.ops = &default_dev_ops_root,\n");
|
|
else
|
|
fprintf(fil, "\t.ops = NULL,\n");
|
|
fprintf(fil, "#endif\n");
|
|
fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->parent->dev->name,
|
|
ptr->parent->id);
|
|
fprintf(fil, "\t.path = {");
|
|
fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
|
|
fprintf(fil, "},\n");
|
|
fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
|
|
fprintf(fil, "\t.hidden = %d,\n", ptr->hidden);
|
|
fprintf(fil, "\t.on_mainboard = 1,\n");
|
|
if (ptr->subsystem_vendor > 0)
|
|
fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n",
|
|
ptr->subsystem_vendor);
|
|
|
|
for (pin = 0; pin < 4; pin++) {
|
|
if (ptr->pci_irq_info[pin].ioapic_irq_pin > 0)
|
|
fprintf(fil,
|
|
"\t.pci_irq_info[%d].ioapic_irq_pin = %d,\n",
|
|
pin, ptr->pci_irq_info[pin].ioapic_irq_pin);
|
|
|
|
if (ptr->pci_irq_info[pin].ioapic_dst_id > 0)
|
|
fprintf(fil,
|
|
"\t.pci_irq_info[%d].ioapic_dst_id = %d,\n",
|
|
pin, ptr->pci_irq_info[pin].ioapic_dst_id);
|
|
}
|
|
|
|
if (ptr->subsystem_device > 0)
|
|
fprintf(fil, "\t.subsystem_device = 0x%04x,\n",
|
|
ptr->subsystem_device);
|
|
|
|
if (ptr->res) {
|
|
fprintf(fil, "\t.resource_list = &%s_res[0],\n",
|
|
ptr->name);
|
|
}
|
|
if (has_children)
|
|
fprintf(fil, "\t.link_list = &%s_links[0],\n",
|
|
ptr->name);
|
|
else
|
|
fprintf(fil, "\t.link_list = NULL,\n");
|
|
if (ptr->sibling)
|
|
fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
|
|
fprintf(fil, "#if !DEVTREE_EARLY\n");
|
|
fprintf(fil, "\t.chip_ops = &%s_ops,\n",
|
|
chip_ins->chip->name_underscore);
|
|
if (chip_ins == &mainboard_instance)
|
|
fprintf(fil, "\t.name = mainboard_name,\n");
|
|
fprintf(fil, "#endif\n");
|
|
if (chip_ins->chip->chiph_exists)
|
|
fprintf(fil, "\t.chip_info = &%s_info_%d,\n",
|
|
chip_ins->chip->name_underscore, chip_ins->id);
|
|
if (next)
|
|
fprintf(fil, "\t.next=&%s,\n", next->name);
|
|
if (ptr->smbios_slot_type || ptr->smbios_slot_data_width ||
|
|
ptr->smbios_slot_designation || ptr->smbios_slot_length) {
|
|
fprintf(fil, "#if !DEVTREE_EARLY\n");
|
|
fprintf(fil, "#if CONFIG(GENERATE_SMBIOS_TABLES)\n");
|
|
}
|
|
/* SMBIOS types start at 1, if zero it hasn't been set */
|
|
if (ptr->smbios_slot_type)
|
|
fprintf(fil, "\t.smbios_slot_type = %s,\n",
|
|
ptr->smbios_slot_type);
|
|
if (ptr->smbios_slot_data_width)
|
|
fprintf(fil, "\t.smbios_slot_data_width = %s,\n",
|
|
ptr->smbios_slot_data_width);
|
|
if (ptr->smbios_slot_designation)
|
|
fprintf(fil, "\t.smbios_slot_designation = \"%s\",\n",
|
|
ptr->smbios_slot_designation);
|
|
if (ptr->smbios_slot_length)
|
|
fprintf(fil, "\t.smbios_slot_length = %s,\n",
|
|
ptr->smbios_slot_length);
|
|
if (ptr->smbios_slot_type || ptr->smbios_slot_data_width ||
|
|
ptr->smbios_slot_designation || ptr->smbios_slot_length) {
|
|
fprintf(fil, "#endif\n");
|
|
fprintf(fil, "#endif\n");
|
|
}
|
|
fprintf(fil, "};\n");
|
|
|
|
emit_resources(fil, ptr);
|
|
|
|
if (has_children)
|
|
emit_dev_links(fil, ptr);
|
|
}
|
|
|
|
static void add_siblings_to_queue(struct queue_entry **bfs_q_head,
|
|
struct device *d)
|
|
{
|
|
while (d) {
|
|
enqueue_tail(bfs_q_head, d);
|
|
d = d->sibling;
|
|
}
|
|
}
|
|
|
|
static void add_children_to_queue(struct queue_entry **bfs_q_head,
|
|
struct device *d)
|
|
{
|
|
struct bus *bus = d->bus;
|
|
|
|
while (bus) {
|
|
if (bus->children)
|
|
add_siblings_to_queue(bfs_q_head, bus->children);
|
|
bus = bus->next_bus;
|
|
}
|
|
}
|
|
|
|
static void walk_device_tree(FILE *fil, struct device *ptr,
|
|
void (*func)(FILE *, struct device *,
|
|
struct device *))
|
|
{
|
|
struct queue_entry *bfs_q_head = NULL;
|
|
|
|
enqueue_tail(&bfs_q_head, ptr);
|
|
|
|
while ((ptr = dequeue_head(&bfs_q_head))) {
|
|
add_children_to_queue(&bfs_q_head, ptr);
|
|
func(fil, ptr, peek_queue_head(bfs_q_head));
|
|
}
|
|
}
|
|
|
|
static void emit_chip_headers(FILE *fil, struct chip *chip)
|
|
{
|
|
struct chip *tmp = chip;
|
|
|
|
fprintf(fil, "#include <device/device.h>\n");
|
|
fprintf(fil, "#include <device/pci.h>\n");
|
|
|
|
while (chip) {
|
|
if (chip->chiph_exists)
|
|
fprintf(fil, "#include \"%s/chip.h\"\n", chip->name);
|
|
chip = chip->next;
|
|
}
|
|
fprintf(fil, "\n#if !DEVTREE_EARLY\n");
|
|
fprintf(fil,
|
|
"__attribute__((weak)) struct chip_operations mainboard_ops = {};\n");
|
|
|
|
chip = tmp;
|
|
while (chip) {
|
|
fprintf(fil,
|
|
"__attribute__((weak)) struct chip_operations %s_ops = {};\n",
|
|
chip->name_underscore);
|
|
chip = chip->next;
|
|
}
|
|
fprintf(fil, "#endif\n");
|
|
}
|
|
|
|
static void emit_chip_instance(FILE *fil, struct chip_instance *instance)
|
|
{
|
|
fprintf(fil, "STORAGE struct %s_config %s_info_%d = {",
|
|
instance->chip->name_underscore,
|
|
instance->chip->name_underscore,
|
|
instance->id);
|
|
|
|
if (instance->reg) {
|
|
fprintf(fil, "\n");
|
|
struct reg *r = instance->reg;
|
|
while (r) {
|
|
fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
|
|
r = r->next;
|
|
}
|
|
}
|
|
fprintf(fil, "};\n\n");
|
|
}
|
|
|
|
static void emit_chips(FILE *fil)
|
|
{
|
|
struct chip *chip = chip_header.next;
|
|
struct chip_instance *instance;
|
|
|
|
emit_chip_headers(fil, chip);
|
|
|
|
fprintf(fil, "\n#define STORAGE static __unused DEVTREE_CONST\n\n");
|
|
|
|
for (; chip; chip = chip->next) {
|
|
if (!chip->chiph_exists)
|
|
continue;
|
|
|
|
instance = chip->instance;
|
|
while (instance) {
|
|
emit_chip_instance(fil, instance);
|
|
instance = instance->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void inherit_subsystem_ids(FILE *file, struct device *dev,
|
|
struct device *next)
|
|
{
|
|
struct device *p;
|
|
|
|
if (dev->subsystem_vendor != -1 && dev->subsystem_device != -1) {
|
|
/* user already gave us a subsystem vendor/device */
|
|
return;
|
|
}
|
|
|
|
for (p = dev; p && p->parent->dev != p; p = p->parent->dev) {
|
|
|
|
if (p->bustype != PCI && p->bustype != DOMAIN)
|
|
continue;
|
|
|
|
if (p->inherit_subsystem) {
|
|
dev->subsystem_vendor = p->subsystem_vendor;
|
|
dev->subsystem_device = p->subsystem_device;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void usage(void)
|
|
{
|
|
printf("usage: sconfig devicetree_file output_file [override_devicetree_file]\n");
|
|
exit(1);
|
|
}
|
|
|
|
enum {
|
|
DEVICEFILE_ARG = 1,
|
|
OUTPUTFILE_ARG,
|
|
OVERRIDE_DEVICEFILE_ARG,
|
|
};
|
|
|
|
#define MANDATORY_ARG_COUNT 3
|
|
#define OPTIONAL_ARG_COUNT 1
|
|
#define TOTAL_ARG_COUNT (MANDATORY_ARG_COUNT + OPTIONAL_ARG_COUNT)
|
|
|
|
static void parse_devicetree(const char *file, struct bus *parent)
|
|
{
|
|
FILE *filec = fopen(file, "r");
|
|
if (!filec) {
|
|
perror(NULL);
|
|
exit(1);
|
|
}
|
|
|
|
yyrestart(filec);
|
|
|
|
root_parent = parent;
|
|
linenum = 0;
|
|
|
|
yyparse();
|
|
|
|
fclose(filec);
|
|
}
|
|
|
|
/*
|
|
* Match device nodes from base and override tree to see if they are the same
|
|
* node.
|
|
*/
|
|
static int device_match(struct device *a, struct device *b)
|
|
{
|
|
return ((a->path_a == b->path_a) &&
|
|
(a->path_b == b->path_b) &&
|
|
(a->bustype == b->bustype) &&
|
|
(a->chip_instance->chip ==
|
|
b->chip_instance->chip));
|
|
}
|
|
|
|
/*
|
|
* Walk through the override subtree in breadth-first manner starting at node to
|
|
* see if chip_instance pointer of the node is same as chip_instance pointer of
|
|
* override parent that is passed into the function. If yes, then update the
|
|
* chip_instance pointer of the node to chip_instance pointer of the base
|
|
* parent.
|
|
*/
|
|
static void update_chip_pointers(struct device *node,
|
|
struct chip_instance *base_parent_ci,
|
|
struct chip_instance *override_parent_ci)
|
|
{
|
|
struct queue_entry *q_head = NULL;
|
|
|
|
enqueue_tail(&q_head, node);
|
|
|
|
while ((node = dequeue_head(&q_head))) {
|
|
if (node->chip_instance != override_parent_ci)
|
|
continue;
|
|
node->chip_instance = base_parent_ci;
|
|
add_children_to_queue(&q_head, node);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add resource to device. If resource is already present, then update its base
|
|
* and index. If not, then add a new resource to the device.
|
|
*/
|
|
static void update_resource(struct device *dev, struct resource *res)
|
|
{
|
|
struct resource *base_res = dev->res;
|
|
|
|
while (base_res) {
|
|
if (base_res->type == res->type) {
|
|
base_res->index = res->index;
|
|
base_res->base = res->base;
|
|
return;
|
|
}
|
|
base_res = base_res->next;
|
|
}
|
|
|
|
new_resource(dev, res->type, res->index, res->base);
|
|
}
|
|
|
|
/*
|
|
* Add register to chip instance. If register is already present, then update
|
|
* its value. If not, then add a new register to the chip instance.
|
|
*/
|
|
static void update_register(struct chip_instance *c, struct reg *reg)
|
|
{
|
|
struct reg *base_reg = c->reg;
|
|
|
|
while (base_reg) {
|
|
if (!strcmp(base_reg->key, reg->key)) {
|
|
base_reg->value = reg->value;
|
|
return;
|
|
}
|
|
base_reg = base_reg->next;
|
|
}
|
|
|
|
add_register(c, reg->key, reg->value);
|
|
}
|
|
|
|
static void override_devicetree(struct bus *base_parent,
|
|
struct bus *override_parent);
|
|
|
|
/*
|
|
* Update the base device properties using the properties of override device. In
|
|
* addition to that, call override_devicetree for all the buses under the
|
|
* override device.
|
|
*
|
|
* Override Rules:
|
|
* +--------------------+--------------------------------------------+
|
|
* | | |
|
|
* |struct device member| Rule |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | id | Unchanged. This is used to generate device |
|
|
* | | structure name in static.c. So, no need to |
|
|
* | | override. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | enabled | Copy enabled state from override device. |
|
|
* | | This allows variants to override device |
|
|
* | | state. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | subsystem_vendor | Copy from override device only if any one |
|
|
* | subsystem_device | of the ids is non-zero. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | inherit_subsystem | Copy from override device only if it is |
|
|
* | | non-zero. This allows variant to only |
|
|
* | | enable inherit flag for a device. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | path | Unchanged since these are same for both |
|
|
* | path_a | base and override device (Used for |
|
|
* | path_b | matching devices). |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | bustype | Unchanged since this is same for both base |
|
|
* | | and override device (User for matching |
|
|
* | | devices). |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | pci_irq_info | Unchanged. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | parent | Unchanged. This is meaningful only within |
|
|
* | sibling | the parse tree, hence not being copied. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | res | Each resource that is present in override |
|
|
* | | device is copied over to base device: |
|
|
* | | 1. If resource of same type is present in |
|
|
* | | base device, then index and base of the |
|
|
* | | resource is copied. |
|
|
* | | 2. If not, then a new resource is allocated|
|
|
* | | under the base device using type, index |
|
|
* | | and base from override res. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | chip_instance | Each register of chip_instance is copied |
|
|
* | | over from override device to base device: |
|
|
* | | 1. If register with same key is present in |
|
|
* | | base device, then value of the register |
|
|
* | | is copied. |
|
|
* | | 2. If not, then a new register is allocated|
|
|
* | | under the base chip_instance using key |
|
|
* | | and value from override register. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
* | | |
|
|
* | bus | Recursively call override_devicetree on |
|
|
* | last_bus | each bus of override device. It is assumed |
|
|
* | | that bus with id X under base device |
|
|
* | | to bus with id X under override device. If |
|
|
* | | override device has more buses than base |
|
|
* | | device, then new buses are allocated under |
|
|
* | | base device. |
|
|
* | | |
|
|
* +-----------------------------------------------------------------+
|
|
*/
|
|
static void update_device(struct device *base_dev, struct device *override_dev)
|
|
{
|
|
/*
|
|
* Copy the enabled state of override device to base device. This allows
|
|
* override tree to enable or disable a particular device.
|
|
*/
|
|
base_dev->enabled = override_dev->enabled;
|
|
|
|
/*
|
|
* Copy subsystem vendor and device ids from override device to base
|
|
* device only if the ids are non-zero in override device. Else, honor
|
|
* the values in base device.
|
|
*/
|
|
if (override_dev->subsystem_vendor ||
|
|
override_dev->subsystem_device) {
|
|
base_dev->subsystem_vendor = override_dev->subsystem_vendor;
|
|
base_dev->subsystem_device = override_dev->subsystem_device;
|
|
}
|
|
|
|
/*
|
|
* Copy value of inherity_subsystem from override device to base device
|
|
* only if it is non-zero in override device. This allows override
|
|
* tree to only enable inhert flag for a device.
|
|
*/
|
|
if (override_dev->inherit_subsystem)
|
|
base_dev->inherit_subsystem = override_dev->inherit_subsystem;
|
|
|
|
/*
|
|
* Copy resources of override device to base device.
|
|
* 1. If resource is already present in base device, then index and base
|
|
* of the resource will be copied over.
|
|
* 2. If resource is not already present in base device, a new resource
|
|
* will be allocated.
|
|
*/
|
|
struct resource *res = override_dev->res;
|
|
while (res) {
|
|
update_resource(base_dev, res);
|
|
res = res->next;
|
|
}
|
|
|
|
/*
|
|
* Copy registers of override chip instance to base chip instance.
|
|
* 1. If register key is already present in base chip instance, then
|
|
* value for the register is copied over.
|
|
* 2. If register key is not already present in base chip instance, then
|
|
* a new register will be allocated.
|
|
*/
|
|
struct reg *reg = override_dev->chip_instance->reg;
|
|
while (reg) {
|
|
update_register(base_dev->chip_instance, reg);
|
|
reg = reg->next;
|
|
}
|
|
|
|
/*
|
|
* Now that the device properties are all copied over, look at each bus
|
|
* of the override device and run override_devicetree in a recursive
|
|
* manner. The assumption here is that first bus of override device
|
|
* corresponds to first bus of base device and so on. If base device has
|
|
* lesser buses than override tree, then new buses are allocated for it.
|
|
*/
|
|
struct bus *override_bus = override_dev->bus;
|
|
struct bus *base_bus = base_dev->bus;
|
|
|
|
while (override_bus) {
|
|
|
|
/*
|
|
* If we have more buses in override tree device, then allocate
|
|
* a new bus for the base tree device as well.
|
|
*/
|
|
if (!base_bus) {
|
|
alloc_bus(base_dev);
|
|
base_bus = base_dev->last_bus;
|
|
}
|
|
|
|
override_devicetree(base_dev->bus, override_dev->bus);
|
|
|
|
override_bus = override_bus->next_bus;
|
|
base_bus = base_bus->next_bus;
|
|
}
|
|
|
|
delete_chip_instance(override_dev->chip_instance);
|
|
override_dev->chip_instance = NULL;
|
|
}
|
|
|
|
/*
|
|
* Perform copy of device and properties from override parent to base parent.
|
|
* This function walks through the override tree in a depth-first manner
|
|
* performing following actions:
|
|
* 1. If matching device is found in base tree, then copy the properties of
|
|
* override device to base tree device. Call override_devicetree recursively on
|
|
* the bus of override device.
|
|
* 2. If matching device is not found in base tree, then set override tree
|
|
* device as new child of base_parent and update the chip pointers in override
|
|
* device subtree to ensure the nodes do not point to override tree chip
|
|
* instance.
|
|
*/
|
|
static void override_devicetree(struct bus *base_parent,
|
|
struct bus *override_parent)
|
|
{
|
|
struct device *base_child;
|
|
struct device *override_child = override_parent->children;
|
|
struct device *next_child;
|
|
|
|
while (override_child) {
|
|
|
|
/* Look for a matching device in base tree. */
|
|
for (base_child = base_parent->children;
|
|
base_child; base_child = base_child->sibling) {
|
|
if (device_match(base_child, override_child))
|
|
break;
|
|
}
|
|
|
|
next_child = override_child->sibling;
|
|
|
|
/*
|
|
* If matching device is found, copy properties of
|
|
* override_child to base_child.
|
|
*/
|
|
if (base_child)
|
|
update_device(base_child, override_child);
|
|
else {
|
|
/*
|
|
* If matching device is not found, set override_child
|
|
* as a new child of base_parent.
|
|
*/
|
|
set_new_child(base_parent, override_child);
|
|
/*
|
|
* Ensure all nodes in override tree pointing to
|
|
* override parent chip_instance now point to base
|
|
* parent chip_instance.
|
|
*/
|
|
update_chip_pointers(override_child,
|
|
base_parent->dev->chip_instance,
|
|
override_parent->dev->chip_instance);
|
|
}
|
|
|
|
override_child = next_child;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if ((argc < MANDATORY_ARG_COUNT) || (argc > TOTAL_ARG_COUNT))
|
|
usage();
|
|
|
|
const char *base_devtree = argv[DEVICEFILE_ARG];
|
|
const char *outputc = argv[OUTPUTFILE_ARG];
|
|
const char *override_devtree;
|
|
|
|
parse_devicetree(base_devtree, &base_root_bus);
|
|
|
|
if (argc == TOTAL_ARG_COUNT) {
|
|
override_devtree = argv[OVERRIDE_DEVICEFILE_ARG];
|
|
parse_devicetree(override_devtree, &override_root_bus);
|
|
|
|
if (!dev_has_children(&override_root_dev)) {
|
|
fprintf(stderr, "ERROR: Override tree needs at least one device!\n");
|
|
exit(1);
|
|
}
|
|
|
|
override_devicetree(&base_root_bus, &override_root_bus);
|
|
}
|
|
|
|
FILE *autogen = fopen(outputc, "w");
|
|
if (!autogen) {
|
|
fprintf(stderr, "Could not open file '%s' for writing: ",
|
|
outputc);
|
|
perror(NULL);
|
|
exit(1);
|
|
}
|
|
|
|
emit_chips(autogen);
|
|
|
|
walk_device_tree(autogen, &base_root_dev, inherit_subsystem_ids);
|
|
fprintf(autogen, "\n/* pass 0 */\n");
|
|
walk_device_tree(autogen, &base_root_dev, pass0);
|
|
fprintf(autogen, "\n/* pass 1 */\n");
|
|
walk_device_tree(autogen, &base_root_dev, pass1);
|
|
|
|
fclose(autogen);
|
|
|
|
return 0;
|
|
}
|