| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <typedefs.h> |
| #include <bcmdefs.h> |
| #include <osl.h> |
| #include <bcmutils.h> |
| #include <siutils.h> |
| #include <bcmendian.h> |
| #include <bcmnvram.h> |
| #include <sbchipc.h> |
| #include <bcmsrom.h> |
| #include <bcmotp.h> |
| #include <bcmdevs.h> |
| #include <hndsoc.h> |
| |
| #define NVR_MSG(x) |
| |
| typedef struct _vars { |
| struct _vars *next; |
| int bufsz; /* allocated size */ |
| int size; /* actual vars size */ |
| char *vars; |
| } vars_t; |
| |
| #define VARS_T_OH sizeof(vars_t) |
| |
| static vars_t *vars = NULL; |
| |
| #define NVRAM_FILE 1 |
| |
| static char *findvar(char *vars, char *lim, const char *name); |
| |
| #if defined(FLASH) |
| /* copy flash to ram */ |
| static void BCMINITFN(get_flash_nvram) (si_t * sih, struct nvram_header * nvh) { |
| osl_t *osh; |
| uint nvs, bufsz; |
| vars_t *new; |
| |
| osh = si_osh(sih); |
| |
| nvs = R_REG(osh, &nvh->len) - sizeof(struct nvram_header); |
| bufsz = nvs + VARS_T_OH; |
| |
| if ((new = (vars_t *) MALLOC(osh, bufsz)) == NULL) { |
| NVR_MSG(("Out of memory for flash vars\n")); |
| return; |
| } |
| new->vars = (char *)new + VARS_T_OH; |
| |
| new->bufsz = bufsz; |
| new->size = nvs; |
| new->next = vars; |
| vars = new; |
| |
| bcopy((char *)(&nvh[1]), new->vars, nvs); |
| |
| NVR_MSG(("%s: flash nvram @ %p, copied %d bytes to %p\n", __func__, |
| nvh, nvs, new->vars)); |
| } |
| #endif /* FLASH */ |
| |
| int BCMATTACHFN(nvram_init) (void *si) { |
| |
| /* Make sure we read nvram in flash just once before freeing the memory */ |
| if (vars != NULL) { |
| NVR_MSG(("nvram_init: called again without calling nvram_exit()\n")); |
| return 0; |
| } |
| return 0; |
| } |
| |
| int BCMATTACHFN(nvram_append) (void *si, char *varlst, uint varsz) { |
| uint bufsz = VARS_T_OH; |
| vars_t *new; |
| |
| if ((new = MALLOC(si_osh((si_t *) si), bufsz)) == NULL) |
| return BCME_NOMEM; |
| |
| new->vars = varlst; |
| new->bufsz = bufsz; |
| new->size = varsz; |
| new->next = vars; |
| vars = new; |
| |
| return BCME_OK; |
| } |
| |
| void BCMUNINITFN(nvram_exit) (void *si) { |
| vars_t *this, *next; |
| si_t *sih; |
| |
| sih = (si_t *) si; |
| this = vars; |
| |
| if (this) |
| MFREE(si_osh(sih), this->vars, this->size); |
| |
| while (this) { |
| next = this->next; |
| MFREE(si_osh(sih), this, this->bufsz); |
| this = next; |
| } |
| vars = NULL; |
| } |
| |
| static char *findvar(char *vars, char *lim, const char *name) |
| { |
| char *s; |
| int len; |
| |
| len = strlen(name); |
| |
| for (s = vars; (s < lim) && *s;) { |
| if ((bcmp(s, name, len) == 0) && (s[len] == '=')) |
| return (&s[len + 1]); |
| |
| while (*s++) ; |
| } |
| |
| return NULL; |
| } |
| |
| char *nvram_get(const char *name) |
| { |
| char *v = NULL; |
| vars_t *cur; |
| |
| for (cur = vars; cur; cur = cur->next) |
| if ((v = findvar(cur->vars, cur->vars + cur->size, name))) |
| break; |
| |
| return v; |
| } |
| |
| int BCMATTACHFN(nvram_set) (const char *name, const char *value) { |
| return 0; |
| } |
| |
| int BCMATTACHFN(nvram_unset) (const char *name) { |
| return 0; |
| } |
| |
| int BCMATTACHFN(nvram_reset) (void *si) { |
| return 0; |
| } |
| |
| int BCMATTACHFN(nvram_commit) (void) { |
| return 0; |
| } |
| |
| int nvram_getall(char *buf, int count) |
| { |
| int len, resid = count; |
| vars_t *this; |
| |
| this = vars; |
| while (this) { |
| char *from, *lim, *to; |
| int acc; |
| |
| from = this->vars; |
| lim = (char *)((uintptr) this->vars + this->size); |
| to = buf; |
| acc = 0; |
| while ((from < lim) && (*from)) { |
| len = strlen(from) + 1; |
| if (resid < (acc + len)) |
| return BCME_BUFTOOSHORT; |
| bcopy(from, to, len); |
| acc += len; |
| from += len; |
| to += len; |
| } |
| |
| resid -= acc; |
| buf += acc; |
| this = this->next; |
| } |
| if (resid < 1) |
| return BCME_BUFTOOSHORT; |
| *buf = '\0'; |
| return 0; |
| } |