static int cfi_chip_setup(struct map_info *map,
struct cfi_private *cfi)
{
int ofs_factor = cfi->interleave*cfi->device_type;
__u32 base = 0;
int num_erase_regions = cfi_read_query(map, base + (0x10 + 28)*ofs_factor);
int i;
#ifdef DEBUG_CFI
printk("Number of erase regions: %d\n", num_erase_regions);
#endif
if (!num_erase_regions)
return 0;
cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL);
if (!cfi->cfiq) {
printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
return 0;
}
memset(cfi->cfiq,0,sizeof(struct cfi_ident));
cfi->cfi_mode = CFI_MODE_CFI;
cfi->fast_prog=1; /* CFI supports fast programming */
/* Read the CFI info structure */
for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++) {
((unsigned char *)cfi->cfiq)[i] = cfi_read_query(map,base + (0x10 + i)*ofs_factor);
}
/* Do any necessary byteswapping */
cfi->cfiq->P_ID = le16_to_cpu(cfi->cfiq->P_ID);
cfi->cfiq->P_ADR = le16_to_cpu(cfi->cfiq->P_ADR);
cfi->cfiq->A_ID = le16_to_cpu(cfi->cfiq->A_ID);
cfi->cfiq->A_ADR = le16_to_cpu(cfi->cfiq->A_ADR);
cfi->cfiq->InterfaceDesc = le16_to_cpu(cfi->cfiq->InterfaceDesc);
cfi->cfiq->MaxBufWriteSize = le16_to_cpu(cfi->cfiq->MaxBufWriteSize);
#ifdef DEBUG_CFI
/* Dump the information therein */
print_cfi_ident(cfi->cfiq);
#endif
for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]);
#ifdef DEBUG_CFI
printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n",
i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff,
(cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1);
#endif
}
/* Put it back into Read Mode */
cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
return 1;
}
static int cfi_chip_setup(struct map_info *map,
struct cfi_private *cfi)
{
int ofs_factor = cfi->interleave*cfi->device_type;
__u32 base = 0;
int num_erase_regions = cfi_read_query(map, base + (0x10 + 28)*ofs_factor);
int i;
#ifdef DEBUG_CFI
printk("Number of erase regions: %d\n", num_erase_regions);
#endif
if (!num_erase_regions)
return 0;
cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL);
if (!cfi->cfiq) {
printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
return 0;
}
memset(cfi->cfiq,0,sizeof(struct cfi_ident));
cfi->cfi_mode = CFI_MODE_CFI;
cfi->fast_prog=1; /* CFI supports fast programming */
/* Read the CFI info structure */
for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++) {
((unsigned char *)cfi->cfiq)[i] = cfi_read_query(map,base + (0x10 + i)*ofs_factor);
}
/* Do any necessary byteswapping */
cfi->cfiq->P_ID = le16_to_cpu(cfi->cfiq->P_ID);
cfi->cfiq->P_ADR = le16_to_cpu(cfi->cfiq->P_ADR);
cfi->cfiq->A_ID = le16_to_cpu(cfi->cfiq->A_ID);
cfi->cfiq->A_ADR = le16_to_cpu(cfi->cfiq->A_ADR);
cfi->cfiq->InterfaceDesc = le16_to_cpu(cfi->cfiq->InterfaceDesc);
cfi->cfiq->MaxBufWriteSize = le16_to_cpu(cfi->cfiq->MaxBufWriteSize);
/*
* ST screwed up the CFI interface for buffer writes on their parts,
* so this needs to be fixed up by hand here.
*
* A possible enhancment is that instead of just reverting back
* to word write (as this does), we could use the ST specific double
* word write instead.
*/
if (cfi_read_query(map,base) == 0x20) {
cfi->cfiq->BufWriteTimeoutTyp = 0;
cfi->cfiq->BufWriteTimeoutMax = 0;
}
#ifdef DEBUG_CFI
/* Dump the information therein */
print_cfi_ident(cfi->cfiq);
#endif
for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]);
#ifdef DEBUG_CFI
printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n",
i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff,
(cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1);
#endif
}
/* Put it back into Read Mode */
cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
/* some devices don't respond to 0xF0, so send 0xFF to be sure */
cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
return 1;
}
