diff options
Diffstat (limited to 'drivers/mtd/dataflash.c')
| -rw-r--r-- | drivers/mtd/dataflash.c | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/drivers/mtd/dataflash.c b/drivers/mtd/dataflash.c new file mode 100644 index 00000000000..91903c8c8f7 --- /dev/null +++ b/drivers/mtd/dataflash.c @@ -0,0 +1,507 @@ +/* LowLevel function for ATMEL DataFlash support + * Author : Hamid Ikdoumi (Atmel) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ +#include <common.h> +#include <config.h> +#ifdef CONFIG_HAS_DATAFLASH +#include <asm/hardware.h> +#include <dataflash.h> + +AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS]; +static AT91S_DataFlash DataFlashInst; + +#ifdef CONFIG_AT91SAM9260EK +int cs[][CFG_MAX_DATAFLASH_BANKS] = { + {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */ + {CFG_DATAFLASH_LOGIC_ADDR_CS1, 1} +}; +#elif defined(CONFIG_AT91SAM9263EK) +int cs[][CFG_MAX_DATAFLASH_BANKS] = { + {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0} /* Logical adress, CS */ +}; +#else +int cs[][CFG_MAX_DATAFLASH_BANKS] = { + {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */ + {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3} +}; +#endif + +/*define the area offsets*/ +#if defined(CONFIG_AT91SAM9261EK) || defined(CONFIG_AT91SAM9260EK) || defined(CONFIG_AT91SAM9263EK) +#if defined(CONFIG_NEW_PARTITION) +dataflash_protect_t area_list[NB_DATAFLASH_AREA] = { + {0x00000000, 0x00003FFF, FLAG_PROTECT_SET, 0, "Bootstrap"}, /* ROM code */ + {0x00004200, 0x000083FF, FLAG_PROTECT_CLEAR, 0, "Environment"}, /* u-boot environment */ + {0x00008400, 0x0003DDFF, FLAG_PROTECT_SET, 0, "U-Boot"}, /* u-boot code */ + {0x0003DE00, 0x00041FFF, FLAG_PROTECT_CLEAR, FLAG_SETENV, "MON"}, /* Room for alternative boot monitor */ + {0x00042000, 0x0018BFFF, FLAG_PROTECT_CLEAR, FLAG_SETENV, "OS"}, /* data area size to tune */ + {0x0018C000, 0xFFFFFFFF, FLAG_PROTECT_CLEAR, FLAG_SETENV, "FS"}, /* data area size to tune */ +}; +#else +dataflash_protect_t area_list[NB_DATAFLASH_AREA] = { + {0, 0x3fff, FLAG_PROTECT_SET}, /* ROM code */ + {0x4000, 0x7fff, FLAG_PROTECT_CLEAR}, /* u-boot environment */ + {0x8000, 0x37fff, FLAG_PROTECT_SET}, /* u-boot code */ + {0x38000, 0x1fffff, FLAG_PROTECT_CLEAR}, /* data area size to tune */ +}; +#endif +#elif defined(CONFIG_NEW_PARTITION) +/*define the area offsets*/ +/* Invalid partitions should be defined with start > end */ +dataflash_protect_t area_list[NB_DATAFLASH_AREA*CFG_MAX_DATAFLASH_BANKS] = { + {0x00000000, 0x000083ff, FLAG_PROTECT_SET, 0, "Bootstrap"}, /* ROM code */ + {0x00008400, 0x00020fff, FLAG_PROTECT_SET, 0, "U-Boot"}, /* u-boot code */ + {0x00021000, 0x000293ff, FLAG_PROTECT_CLEAR, 0, "Environment"}, /* u-boot environment 8Kb */ + {0x00029400, 0x00041fff, FLAG_PROTECT_INVALID, 0, "<Unused>"}, /* Rest of Sector 1 */ + {0x00042000, 0x0018Bfff, FLAG_PROTECT_CLEAR, FLAG_SETENV, "OS"}, /* data area size to tune */ + {0x0018C000, 0xffffffff, FLAG_PROTECT_CLEAR, FLAG_SETENV, "FS"}, /* data area size to tune */ + + {0x00000000, 0xffffffff, FLAG_PROTECT_CLEAR, FLAG_SETENV, "Data"}, /* data area */ + {0xffffffff, 0x00000000, FLAG_PROTECT_INVALID, 0, "<Invalid>"}, /* Invalid */ + {0xffffffff, 0x00000000, FLAG_PROTECT_INVALID, 0, "<Invalid>"}, /* Invalid */ + {0xffffffff, 0x00000000, FLAG_PROTECT_INVALID, 0, "<Invalid>"}, /* Invalid */ + {0xffffffff, 0x00000000, FLAG_PROTECT_INVALID, 0, "<Invalid>"}, /* Invalid */ + {0xffffffff, 0x00000000, FLAG_PROTECT_INVALID, 0, "<Invalid>"}, /* Invalid */ +}; +#else +dataflash_protect_t area_list[NB_DATAFLASH_AREA] = { + {0, 0x7fff, FLAG_PROTECT_SET}, /* ROM code */ + {0x8000, 0x1ffff, FLAG_PROTECT_SET}, /* u-boot code */ + {0x20000, 0x27fff, FLAG_PROTECT_CLEAR}, /* u-boot environment */ + {0x28000, 0x1fffff, FLAG_PROTECT_CLEAR}, /* data area size to tune */ +}; +#endif + +extern void AT91F_SpiInit (void); +extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc); +extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash, + unsigned long addr, + unsigned long size, char *buffer); +extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash, + unsigned char *src, + int dest, + int size ); + +int AT91F_DataflashInit (void) +{ + int i, j; + int dfcode; + int part = 0; + int last_part; + int found[CFG_MAX_DATAFLASH_BANKS]; + unsigned char protected; + + AT91F_SpiInit (); + + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + found[i] = 0; + dataflash_info[i].Desc.state = IDLE; + dataflash_info[i].id = 0; + dataflash_info[i].Device.pages_number = 0; + dfcode = AT91F_DataflashProbe (cs[i][1], + &dataflash_info[i].Desc); + + switch (dfcode) { + case AT45DB161: + dataflash_info[i].Device.pages_number = 4096; + dataflash_info[i].Device.pages_size = 528; + dataflash_info[i].Device.page_offset = 10; + dataflash_info[i].Device.byte_mask = 0x300; + dataflash_info[i].Device.cs = cs[i][1]; + dataflash_info[i].Desc.DataFlash_state = IDLE; + dataflash_info[i].logical_address = cs[i][0]; + dataflash_info[i].id = dfcode; + found[i] += dfcode;; + break; + + case AT45DB321: + dataflash_info[i].Device.pages_number = 8192; + dataflash_info[i].Device.pages_size = 528; + dataflash_info[i].Device.page_offset = 10; + dataflash_info[i].Device.byte_mask = 0x300; + dataflash_info[i].Device.cs = cs[i][1]; + dataflash_info[i].Desc.DataFlash_state = IDLE; + dataflash_info[i].logical_address = cs[i][0]; + dataflash_info[i].id = dfcode; + found[i] += dfcode;; + break; + + case AT45DB642: + dataflash_info[i].Device.pages_number = 8192; + dataflash_info[i].Device.pages_size = 1056; + dataflash_info[i].Device.page_offset = 11; + dataflash_info[i].Device.byte_mask = 0x700; + dataflash_info[i].Device.cs = cs[i][1]; + dataflash_info[i].Desc.DataFlash_state = IDLE; + dataflash_info[i].logical_address = cs[i][0]; + dataflash_info[i].id = dfcode; + found[i] += dfcode;; + break; + + case AT45DB128: + dataflash_info[i].Device.pages_number = 16384; + dataflash_info[i].Device.pages_size = 1056; + dataflash_info[i].Device.page_offset = 11; + dataflash_info[i].Device.byte_mask = 0x700; + dataflash_info[i].Device.cs = cs[i][1]; + dataflash_info[i].Desc.DataFlash_state = IDLE; + dataflash_info[i].logical_address = cs[i][0]; + dataflash_info[i].id = dfcode; + found[i] += dfcode;; + break; + + default: + dfcode = 0; + break; + } + /* set the last area end to the dataflash size*/ + area_list[NB_DATAFLASH_AREA -1].end = + (dataflash_info[i].Device.pages_number * + dataflash_info[i].Device.pages_size)-1; + + last_part=0; + /* set the area addresses */ + for(j = 0; j<NB_DATAFLASH_AREA; j++) { + if(found[i]!=0) { + dataflash_info[i].Device.area_list[j].start = + area_list[part].start + + dataflash_info[i].logical_address; + if(area_list[part].end == 0xffffffff) { + dataflash_info[i].Device.area_list[j].end = + dataflash_info[i].end_address + + dataflash_info [i].logical_address; + last_part = 1; + } else { + dataflash_info[i].Device.area_list[j].end = + area_list[part].end + + dataflash_info[i].logical_address; + } + protected = area_list[part].protected; + /* Set the environment according to the label...*/ + if(protected == FLAG_PROTECT_INVALID) { + dataflash_info[i].Device.area_list[j].protected = + FLAG_PROTECT_INVALID; + } else { + dataflash_info[i].Device.area_list[j].protected = + protected; + } + strcpy((char*)(dataflash_info[i].Device.area_list[j].label), + (const char *)area_list[part].label); + } + part++; + } + } + return found[0]; +} + +#ifdef CONFIG_NEW_DF_PARTITION +int AT91F_DataflashSetEnv (void) +{ + int i, j; + int part; + unsigned char env; + unsigned char s[32]; /* Will fit a long int in hex */ + unsigned long start; + for (i = 0, part= 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + for(j = 0; j<NB_DATAFLASH_AREA; j++) { + env = area_list[part].setenv; + /* Set the environment according to the label...*/ + if((env & FLAG_SETENV) == FLAG_SETENV) { + start = + dataflash_info[i].Device.area_list[j].start; + sprintf(s,"%X",start); + setenv(area_list[part].label,s); + } + part++; + } + } +} +#endif + +void dataflash_print_info (void) +{ + int i, j; + + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + if (dataflash_info[i].id != 0) { + printf("DataFlash:"); + switch (dataflash_info[i].id) { + case AT45DB161: + printf("AT45DB161\n"); + break; + + case AT45DB321: + printf("AT45DB321\n"); + break; + + case AT45DB642: + printf("AT45DB642\n"); + break; + case AT45DB128: + printf("AT45DB128\n"); + break; + } + + printf("Nb pages: %6d\n" + "Page Size: %6d\n" + "Size=%8d bytes\n" + "Logical address: 0x%08X\n", + (unsigned int) dataflash_info[i].Device.pages_number, + (unsigned int) dataflash_info[i].Device.pages_size, + (unsigned int) dataflash_info[i].Device.pages_number * + dataflash_info[i].Device.pages_size, + (unsigned int) dataflash_info[i].logical_address); + for (j=0; j< NB_DATAFLASH_AREA; j++) { + switch(dataflash_info[i].Device.area_list[j].protected) { + case FLAG_PROTECT_SET: + case FLAG_PROTECT_CLEAR: + printf("Area %i:\t%08lX to %08lX %s", j, + dataflash_info[i].Device.area_list[j].start, + dataflash_info[i].Device.area_list[j].end, + (dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " "); +#ifdef CONFIG_NEW_DF_PARTITION + printf(" %s\n", dataflash_info[i].Device.area_list[j].label); +#else + printf("\n"); +#endif + break; +#ifdef CONFIG_NEW_DF_PARTITION + case FLAG_PROTECT_INVALID: + break; +#endif + } + } + } + } +} + + +/*---------------------------------------------------------------------------*/ +/* Function Name : AT91F_DataflashSelect */ +/* Object : Select the correct device */ +/*---------------------------------------------------------------------------*/ +AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash, + unsigned long *addr) +{ + char addr_valid = 0; + int i; + + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) + if ( dataflash_info[i].id + && ((((int) addr) & 0xFF000000) == + dataflash_info[i].logical_address)) { + addr_valid = 1; + break; + } + if (!addr_valid) { + pFlash = (AT91PS_DataFlash) 0; + return pFlash; + } + pFlash->pDataFlashDesc = &(dataflash_info[i].Desc); + pFlash->pDevice = &(dataflash_info[i].Device); + *addr -= dataflash_info[i].logical_address; + return (pFlash); +} + +/*---------------------------------------------------------------------------*/ +/* Function Name : addr_dataflash */ +/* Object : Test if address is valid */ +/*---------------------------------------------------------------------------*/ +int addr_dataflash (unsigned long addr) +{ + int addr_valid = 0; + int i; + + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + if ((((int) addr) & 0xFF000000) == + dataflash_info[i].logical_address) { + addr_valid = 1; + break; + } + } + + return addr_valid; +} +/*---------------------------------------------------------------------------*/ +/* Function Name : size_dataflash */ +/* Object : Test if address is valid regarding the size */ +/*---------------------------------------------------------------------------*/ +int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr, + unsigned long size) +{ + /* is outside the dataflash */ + if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size * + pdataFlash->pDevice->pages_number)) return 0; + /* is too large for the dataflash */ + if (size > ((pdataFlash->pDevice->pages_size * + pdataFlash->pDevice->pages_number) - + ((int)addr & 0x0FFFFFFF))) return 0; + + return 1; +} +/*---------------------------------------------------------------------------*/ +/* Function Name : prot_dataflash */ +/* Object : Test if destination area is protected */ +/*---------------------------------------------------------------------------*/ +int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr) +{ +int area; + /* find area */ + for (area=0; area < NB_DATAFLASH_AREA; area++) { + if ((addr >= pdataFlash->pDevice->area_list[area].start) && + (addr < pdataFlash->pDevice->area_list[area].end)) + break; + } + if (area == NB_DATAFLASH_AREA) + return -1; + + /*test protection value*/ + if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET) + return 0; + if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID) + return 0; + + return 1; +} +/*--------------------------------------------------------------------------*/ +/* Function Name : dataflash_real_protect */ +/* Object : protect/unprotect area */ +/*--------------------------------------------------------------------------*/ +int dataflash_real_protect (int flag, unsigned long start_addr, + unsigned long end_addr) +{ +int i,j, area1, area2, addr_valid = 0; + /* find dataflash */ + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + if ((((int) start_addr) & 0xF0000000) == + dataflash_info[i].logical_address) { + addr_valid = 1; + break; + } + } + if (!addr_valid) { + return -1; + } + /* find start area */ + for (area1=0; area1 < NB_DATAFLASH_AREA; area1++) { + if (start_addr == dataflash_info[i].Device.area_list[area1].start) + break; + } + if (area1 == NB_DATAFLASH_AREA) return -1; + /* find end area */ + for (area2=0; area2 < NB_DATAFLASH_AREA; area2++) { + if (end_addr == dataflash_info[i].Device.area_list[area2].end) + break; + } + if (area2 == NB_DATAFLASH_AREA) + return -1; + + /*set protection value*/ + for(j = area1; j < area2+1 ; j++) + if(dataflash_info[i].Device.area_list[j].protected + != FLAG_PROTECT_INVALID) { + if (flag == 0) { + dataflash_info[i].Device.area_list[j].protected + = FLAG_PROTECT_CLEAR; + } else { + dataflash_info[i].Device.area_list[j].protected + = FLAG_PROTECT_SET; + } + } + + return (area2-area1+1); +} + +/*---------------------------------------------------------------------------*/ +/* Function Name : read_dataflash */ +/* Object : dataflash memory read */ +/*---------------------------------------------------------------------------*/ +int read_dataflash (unsigned long addr, unsigned long size, char *result) +{ + unsigned long AddrToRead = addr; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead); + + if (pFlash == 0) + return ERR_UNKNOWN_FLASH_TYPE; + + if (size_dataflash(pFlash,addr,size) == 0) + return ERR_INVAL; + + return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result)); +} + + +/*---------------------------------------------------------------------------*/ +/* Function Name : write_dataflash */ +/* Object : write a block in dataflash */ +/*---------------------------------------------------------------------------*/ +int write_dataflash (unsigned long addr_dest, unsigned long addr_src, + unsigned long size) +{ + unsigned long AddrToWrite = addr_dest; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite); + + if (pFlash == 0) + return ERR_UNKNOWN_FLASH_TYPE; + + if (size_dataflash(pFlash,addr_dest,size) == 0) + return ERR_INVAL; + + if (prot_dataflash(pFlash,addr_dest) == 0) + return ERR_PROTECTED; + + if (AddrToWrite == -1) + return -1; + + return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src, + AddrToWrite, size); +} + + +void dataflash_perror (int err) +{ + switch (err) { + case ERR_OK: + break; + case ERR_TIMOUT: + printf("Timeout writing to DataFlash\n"); + break; + case ERR_PROTECTED: + printf("Can't write to protected/invalid DataFlash sectors\n"); + break; + case ERR_INVAL: + printf("Outside available DataFlash\n"); + break; + case ERR_UNKNOWN_FLASH_TYPE: + printf("Unknown Type of DataFlash\n"); + break; + case ERR_PROG_ERROR: + printf("General DataFlash Programming Error\n"); + break; + default: + printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err); + break; + } +} + +#endif |