/* 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; int cs[][CFG_MAX_DATAFLASH_BANKS] = { {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */ {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3} }; /*define the area offsets*/ 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 */ }; 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; AT91F_SpiInit (); for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { 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; 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; 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; 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; break; default: 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; /* set the area addresses */ for(j = 0; j<NB_DATAFLASH_AREA; j++) { dataflash_info[i].Device.area_list[j].start = area_list[j].start + dataflash_info[i].logical_address; dataflash_info[i].Device.area_list[j].end = area_list[j].end + dataflash_info[i].logical_address; dataflash_info[i].Device.area_list[j].protected = area_list[j].protected; } } return (1); } 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++) { printf ("Area %i:\t%08lX to %08lX %s\n", 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)" : ""); } } } } /*------------------------------------------------------------------------------*/ /* Function Name : AT91F_DataflashSelect */ /* Object : Select the correct device */ /*------------------------------------------------------------------------------*/ AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash, unsigned int *addr) { char addr_valid = 0; int i; for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) if ((*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; 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 (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) { int 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) { int 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, (char *) 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 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