/* Probe for NVRAM header */
static int
early_nvram_init(void)
{
struct nvram_header *header;
int i;
u32 *src, *dst;
#ifdef CONFIG_MTD_NFLASH
hndnand_t *nfl_info = NULL;
uint32 blocksize;
#endif
char *nvram_space_str;
int bootdev;
uint32 flash_base;
uint32 lim = SI_FLASH_WINDOW;
uint32 off;
hndsflash_t *sfl_info;
header = (struct nvram_header *)ram_nvram_buf;
if (header->magic == NVRAM_MAGIC) {
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init) {
nvram_inram = TRUE;
goto found;
}
}
bootdev = soc_boot_dev((void *)sih);
#ifdef CONFIG_MTD_NFLASH
if (bootdev == SOC_BOOTDEV_NANDFLASH) {
if ((nfl_info = hndnand_init(sih)) == NULL)
return -1;
flash_base = nfl_info->base;
blocksize = nfl_info->blocksize;
off = blocksize;
for (; off < NFL_BOOT_SIZE; off += blocksize) {
if (hndnand_checkbadb(nfl_info, off) != 0)
continue;
header = (struct nvram_header *)(flash_base + off);
if (header->magic != NVRAM_MAGIC)
continue;
/* Read into the nand_nvram */
if ((header = nand_find_nvram(nfl_info, off)) == NULL)
continue;
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init)
goto found;
}
}
else
#endif
if (bootdev == SOC_BOOTDEV_SFLASH ||
bootdev == SOC_BOOTDEV_ROM) {
/* Boot from SFLASH or ROM */
if ((sfl_info = hndsflash_init(sih)) == NULL)
return -1;
lim = sfl_info->size;
BUG_ON(request_resource(&iomem_resource, &norflash_region));
flash_base = sfl_info->base;
BUG_ON(IS_ERR_OR_NULL((void *)flash_base));
off = FLASH_MIN;
while (off <= lim) {
/* Windowed flash access */
header = (struct nvram_header *)(flash_base + off - nvram_space);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init) {
goto found;
}
off += DEF_NVRAM_SPACE;
}
}
else {
/* This is the case bootdev == SOC_BOOTDEV_PFLASH, not applied on NorthStar */
ASSERT(0);
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
header = (struct nvram_header *)(flash_base + 4 KB);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init) {
goto found;
}
header = (struct nvram_header *)(flash_base + 1 KB);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init) {
goto found;
}
return -1;
found:
src = (u32 *)header;
dst = (u32 *)nvram_buf;
for (i = 0; i < sizeof(struct nvram_header); i += 4)
*dst++ = *src++;
for (; i < header->len && i < MAX_NVRAM_SPACE; i += 4)
*dst++ = ltoh32(*src++);
nvram_space_str = early_nvram_get("nvram_space");
if (nvram_space_str)
nvram_space = bcm_strtoul(nvram_space_str, NULL, 0);
return 0;
}
/* Probe for NVRAM header */
static int
early_nvram_init(void)
{
struct nvram_header *header;
chipcregs_t *cc;
int i;
uint32 base, off, lim;
u32 *src, *dst;
uint32 fltype;
char *nvram_space_str;
#ifdef NFLASH_SUPPORT
hndnand_t *nfl_info = NULL;
uint32 blocksize;
#endif
hndsflash_t *sfl_info = NULL;
header = (struct nvram_header *)ram_nvram_buf;
if (header->magic == NVRAM_MAGIC) {
if (nvram_calc_crc(header) == (uint8) header->crc_ver_init) {
nvram_inram = TRUE;
goto found;
}
}
if ((cc = si_setcore(sih, CC_CORE_ID, 0)) != NULL) {
#ifdef NFLASH_SUPPORT
if ((sih->ccrev == 38) && ((sih->chipst & (1 << 4)) != 0)) {
fltype = NFLASH;
base = KSEG1ADDR(SI_FLASH1);
} else
#endif
{
fltype = readl(&cc->capabilities) & CC_CAP_FLASH_MASK;
base = KSEG1ADDR(SI_FLASH2);
}
switch (fltype) {
case PFLASH:
lim = SI_FLASH2_SZ;
break;
case SFLASH_ST:
case SFLASH_AT:
if ((sfl_info = hndsflash_init(sih)) == NULL)
return -1;
lim = sfl_info->size;
break;
#ifdef NFLASH_SUPPORT
case NFLASH:
if ((nfl_info = hndnand_init(sih)) == NULL)
return -1;
lim = SI_FLASH1_SZ;
break;
#endif
case FLASH_NONE:
default:
return -1;
}
} else {
/* extif assumed, Stop at 4 MB */
base = KSEG1ADDR(SI_FLASH1);
lim = SI_FLASH1_SZ;
}
#ifdef NFLASH_SUPPORT
if (nfl_info != NULL) {
blocksize = nfl_info->blocksize;
off = blocksize;
for (; off < NFL_BOOT_SIZE; off += blocksize) {
if (hndnand_checkbadb(nfl_info, off) != 0)
continue;
header = (struct nvram_header *) KSEG1ADDR(base + off);
if (header->magic != NVRAM_MAGIC)
continue;
/* Read into the nand_nvram */
if ((header = nand_find_nvram(nfl_info, off)) == NULL)
continue;
if (nvram_calc_crc(header) == (uint8)header->crc_ver_init)
goto found;
}
} else
#endif /* NFLASH_SUPPORT */
{
off = FLASH_MIN;
#ifdef RTN66U_NVRAM_64K_SUPPORT
header = (struct nvram_header *) KSEG1ADDR(base + lim - 0x8000);
if(header->magic==0xffffffff) {
header = (struct nvram_header *) KSEG1ADDR(base + 1 KB);
if (nvram_calc_crc(header) == (uint8) header->crc_ver_init) {
nvram_32_reset=1;
goto found;
}
}
#endif
while (off <= lim) {
/* Windowed flash access */
header = (struct nvram_header *) KSEG1ADDR(base + off - MAX_NVRAM_SPACE);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8) header->crc_ver_init) {
goto found;
}
off += DEF_NVRAM_SPACE;
}
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
header = (struct nvram_header *) KSEG1ADDR(base + 4 KB);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8) header->crc_ver_init) {
goto found;
}
header = (struct nvram_header *) KSEG1ADDR(base + 1 KB);
if (header->magic == NVRAM_MAGIC)
if (nvram_calc_crc(header) == (uint8) header->crc_ver_init) {
goto found;
}
return -1;
found:
src = (u32 *) header;
dst = (u32 *) nvram_buf;
for (i = 0; i < sizeof(struct nvram_header); i += 4)
*dst++ = *src++;
for (; i < header->len && i < MAX_NVRAM_SPACE; i += 4)
*dst++ = ltoh32(*src++);
nvram_space_str = early_nvram_get("nvram_space");
if (nvram_space_str)
nvram_space = bcm_strtoul(nvram_space_str, NULL, 0);
return 0;
}
static struct nvram_header *
BCMINITFN(find_nvram)(si_t *sih, bool embonly, bool *isemb)
{
struct nvram_header *nvh;
uint32 off, lim = SI_FLASH2_SZ;
uint32 flbase = SI_FLASH2;
int bootdev;
#ifdef NFLASH_SUPPORT
hndnand_t *nfl_info = NULL;
#endif
#ifdef _CFE_
hndsflash_t *sfl_info = NULL;
#endif
bootdev = soc_boot_dev((void *)sih);
#ifdef NFLASH_SUPPORT
if (bootdev == SOC_BOOTDEV_NANDFLASH) {
/* Init nand anyway */
nfl_info = hndnand_init(sih);
if (nfl_info)
flbase = nfl_info->phybase;
}
else
#endif /* NFLASH_SUPPORT */
if (bootdev == SOC_BOOTDEV_SFLASH) {
#ifdef _CFE_
/* Init nand anyway */
sfl_info = hndsflash_init(sih);
if (sfl_info) {
flbase = sfl_info->phybase;
lim = sfl_info->size;
}
#else
if (sih->ccrev == 42)
flbase = SI_NS_NORFLASH;
#endif
}
if (!embonly) {
*isemb = FALSE;
#ifdef NFLASH_SUPPORT
if (nfl_info) {
uint32 blocksize;
blocksize = nfl_info->blocksize;
off = blocksize;
for (; off < nfl_boot_size(nfl_info); off += blocksize) {
if (hndnand_checkbadb(nfl_info, off) != 0)
continue;
nvh = (struct nvram_header *)OSL_UNCACHED(flbase + off);
if (nvh->magic != NVRAM_MAGIC)
continue;
/* Read into the nand_nvram */
if ((nvh = nand_find_nvram(nfl_info, off)) == NULL)
continue;
if (nvram_calc_crc(nvh) == (uint8)nvh->crc_ver_init)
return nvh;
}
}
else
#endif /* NFLASH_SUPPORT */
{
off = FLASH_MIN;
while (off <= lim) {
nvh = (struct nvram_header *)
OSL_UNCACHED(flbase + off - MAX_NVRAM_SPACE);
if (nvh->magic == NVRAM_MAGIC) {
if (nvram_calc_crc(nvh) == (uint8) nvh->crc_ver_init) {
return (nvh);
}
}
off <<= 1;
}
}
#ifdef BCMDBG
printf("find_nvram: nvram not found, trying embedded nvram next\n");
#endif /* BCMDBG */
}
/*
* Provide feedback to user when nvram corruption detected.
* Must be non-BCMDBG for customer release.
*/
printf("Corrupt NVRAM found, trying embedded NVRAM next.\n");
/* Now check embedded nvram */
*isemb = TRUE;
nvh = (struct nvram_header *)OSL_UNCACHED(flbase + (4 * 1024));
if (nvh->magic == NVRAM_MAGIC)
return (nvh);
nvh = (struct nvram_header *)OSL_UNCACHED(flbase + 1024);
if (nvh->magic == NVRAM_MAGIC)
return (nvh);
#ifdef _CFE_
nvh = (struct nvram_header *)embedded_nvram;
if (nvh->magic == NVRAM_MAGIC)
return (nvh);
#endif
printf("find_nvram: no nvram found\n");
return (NULL);
}
