summaryrefslogtreecommitdiffstats
path: root/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c
diff options
context:
space:
mode:
Diffstat (limited to 'openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c')
-rw-r--r--openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c317
1 files changed, 0 insertions, 317 deletions
diff --git a/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c b/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c
deleted file mode 100644
index af12ced3f..000000000
--- a/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/nvram.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/*
- * NVRAM variable manipulation (common)
- *
- * Copyright 2004, Broadcom Corporation
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- * $Id$
- */
-
-#include <typedefs.h>
-#include <osl.h>
-#include <bcmendian.h>
-#include <bcmnvram.h>
-#include <bcmutils.h>
-#include <sbsdram.h>
-
-extern struct nvram_tuple * _nvram_realloc(struct nvram_tuple *t, const char *name, const char *value);
-extern void _nvram_free(struct nvram_tuple *t);
-extern int _nvram_read(void *buf);
-
-char * _nvram_get(const char *name);
-int _nvram_set(const char *name, const char *value);
-int _nvram_unset(const char *name);
-int _nvram_getall(char *buf, int count);
-int _nvram_commit(struct nvram_header *header);
-int _nvram_init(void);
-void _nvram_exit(void);
-
-static struct nvram_tuple * nvram_hash[257];
-static struct nvram_tuple * nvram_dead;
-
-/* Free all tuples. Should be locked. */
-static void
-nvram_free(void)
-{
- uint i;
- struct nvram_tuple *t, *next;
-
- /* Free hash table */
- for (i = 0; i < ARRAYSIZE(nvram_hash); i++) {
- for (t = nvram_hash[i]; t; t = next) {
- next = t->next;
- _nvram_free(t);
- }
- nvram_hash[i] = NULL;
- }
-
- /* Free dead table */
- for (t = nvram_dead; t; t = next) {
- next = t->next;
- _nvram_free(t);
- }
- nvram_dead = NULL;
-
- /* Indicate to per-port code that all tuples have been freed */
- _nvram_free(NULL);
-}
-
-/* String hash */
-static INLINE uint
-hash(const char *s)
-{
- uint hash = 0;
-
- while (*s)
- hash = 31 * hash + *s++;
-
- return hash;
-}
-
-/* (Re)initialize the hash table. Should be locked. */
-static int
-nvram_rehash(struct nvram_header *header)
-{
- char buf[] = "0xXXXXXXXX", *name, *value, *end, *eq;
-
- /* (Re)initialize hash table */
- nvram_free();
-
- /* Parse and set "name=value\0 ... \0\0" */
- name = (char *) &header[1];
- end = (char *) header + NVRAM_SPACE - 2;
- end[0] = end[1] = '\0';
- for (; *name; name = value + strlen(value) + 1) {
- if (!(eq = strchr(name, '=')))
- break;
- *eq = '\0';
- value = eq + 1;
- _nvram_set(name, value);
- *eq = '=';
- }
-
- /* Set special SDRAM parameters */
- if (!_nvram_get("sdram_init")) {
- sprintf(buf, "0x%04X", (uint16)(header->crc_ver_init >> 16));
- _nvram_set("sdram_init", buf);
- }
- if (!_nvram_get("sdram_config")) {
- sprintf(buf, "0x%04X", (uint16)(header->config_refresh & 0xffff));
- _nvram_set("sdram_config", buf);
- }
- if (!_nvram_get("sdram_refresh")) {
- sprintf(buf, "0x%04X", (uint16)((header->config_refresh >> 16) & 0xffff));
- _nvram_set("sdram_refresh", buf);
- }
- if (!_nvram_get("sdram_ncdl")) {
- sprintf(buf, "0x%08X", header->config_ncdl);
- _nvram_set("sdram_ncdl", buf);
- }
-
- return 0;
-}
-
-/* Get the value of an NVRAM variable. Should be locked. */
-char *
-_nvram_get(const char *name)
-{
- uint i;
- struct nvram_tuple *t;
- char *value;
-
- if (!name)
- return NULL;
-
- /* Hash the name */
- i = hash(name) % ARRAYSIZE(nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (t = nvram_hash[i]; t && strcmp(t->name, name); t = t->next);
-
- value = t ? t->value : NULL;
-
- return value;
-}
-
-/* Get the value of an NVRAM variable. Should be locked. */
-int
-_nvram_set(const char *name, const char *value)
-{
- uint i;
- struct nvram_tuple *t, *u, **prev;
-
- /* Hash the name */
- i = hash(name) % ARRAYSIZE(nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (prev = &nvram_hash[i], t = *prev; t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
- /* (Re)allocate tuple */
- if (!(u = _nvram_realloc(t, name, value)))
- return -12; /* -ENOMEM */
-
- /* Value reallocated */
- if (t && t == u)
- return 0;
-
- /* Move old tuple to the dead table */
- if (t) {
- *prev = t->next;
- t->next = nvram_dead;
- nvram_dead = t;
- }
-
- /* Add new tuple to the hash table */
- u->next = nvram_hash[i];
- nvram_hash[i] = u;
-
- return 0;
-}
-
-/* Unset the value of an NVRAM variable. Should be locked. */
-int
-_nvram_unset(const char *name)
-{
- uint i;
- struct nvram_tuple *t, **prev;
-
- if (!name)
- return 0;
-
- /* Hash the name */
- i = hash(name) % ARRAYSIZE(nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (prev = &nvram_hash[i], t = *prev; t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
- /* Move it to the dead table */
- if (t) {
- *prev = t->next;
- t->next = nvram_dead;
- nvram_dead = t;
- }
-
- return 0;
-}
-
-/* Get all NVRAM variables. Should be locked. */
-int
-_nvram_getall(char *buf, int count)
-{
- uint i;
- struct nvram_tuple *t;
- int len = 0;
-
- bzero(buf, count);
-
- /* Write name=value\0 ... \0\0 */
- for (i = 0; i < ARRAYSIZE(nvram_hash); i++) {
- for (t = nvram_hash[i]; t; t = t->next) {
- if ((count - len) > (strlen(t->name) + 1 + strlen(t->value) + 1))
- len += sprintf(buf + len, "%s=%s", t->name, t->value) + 1;
- else
- break;
- }
- }
-
- return 0;
-}
-
-/* Regenerate NVRAM. Should be locked. */
-int
-_nvram_commit(struct nvram_header *header)
-{
- char *init, *config, *refresh, *ncdl;
- char *ptr, *end;
- int i;
- struct nvram_tuple *t;
- struct nvram_header tmp;
- uint8 crc;
-
- /* Regenerate header */
- header->magic = NVRAM_MAGIC;
- header->crc_ver_init = (NVRAM_VERSION << 8);
- if (!(init = _nvram_get("sdram_init")) ||
- !(config = _nvram_get("sdram_config")) ||
- !(refresh = _nvram_get("sdram_refresh")) ||
- !(ncdl = _nvram_get("sdram_ncdl"))) {
- header->crc_ver_init |= SDRAM_INIT << 16;
- header->config_refresh = SDRAM_CONFIG;
- header->config_refresh |= SDRAM_REFRESH << 16;
- header->config_ncdl = 0;
- } else {
- header->crc_ver_init |= (bcm_strtoul(init, NULL, 0) & 0xffff) << 16;
- header->config_refresh = bcm_strtoul(config, NULL, 0) & 0xffff;
- header->config_refresh |= (bcm_strtoul(refresh, NULL, 0) & 0xffff) << 16;
- header->config_ncdl = bcm_strtoul(ncdl, NULL, 0);
- }
-
- /* Clear data area */
- ptr = (char *) header + sizeof(struct nvram_header);
- bzero(ptr, NVRAM_SPACE - sizeof(struct nvram_header));
-
- /* Leave space for a double NUL at the end */
- end = (char *) header + NVRAM_SPACE - 2;
-
- /* Write out all tuples */
- for (i = 0; i < ARRAYSIZE(nvram_hash); i++) {
- for (t = nvram_hash[i]; t; t = t->next) {
- if ((ptr + strlen(t->name) + 1 + strlen(t->value) + 1) > end)
- break;
- ptr += sprintf(ptr, "%s=%s", t->name, t->value) + 1;
- }
- }
-
- /* End with a double NUL */
- ptr += 2;
-
- /* Set new length */
- header->len = ROUNDUP(ptr - (char *) header, 4);
-
- /* Little-endian CRC8 over the last 11 bytes of the header */
- tmp.crc_ver_init = htol32(header->crc_ver_init);
- tmp.config_refresh = htol32(header->config_refresh);
- tmp.config_ncdl = htol32(header->config_ncdl);
- crc = crc8((char *) &tmp + 9, sizeof(struct nvram_header) - 9, CRC8_INIT_VALUE);
-
- /* Continue CRC8 over data bytes */
- crc = crc8((char *) &header[1], header->len - sizeof(struct nvram_header), crc);
-
- /* Set new CRC8 */
- header->crc_ver_init |= crc;
-
- /* Reinitialize hash table */
- return nvram_rehash(header);
-}
-
-/* Initialize hash table. Should be locked. */
-int
-_nvram_init(void)
-{
- struct nvram_header *header;
- int ret;
-
- if (!(header = (struct nvram_header *) MALLOC(NVRAM_SPACE))) {
- printf("nvram_init: out of memory\n");
- return -12; /* -ENOMEM */
- }
-
- if ((ret = _nvram_read(header)) == 0 &&
- header->magic == NVRAM_MAGIC)
- nvram_rehash(header);
-
- MFREE(header, NVRAM_SPACE);
- return ret;
-}
-
-/* Free hash table. Should be locked. */
-void
-_nvram_exit(void)
-{
- nvram_free();
-}