diff options
Diffstat (limited to 'target/linux/at91/image/dfboot/src/dataflash.c')
| -rw-r--r-- | target/linux/at91/image/dfboot/src/dataflash.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/target/linux/at91/image/dfboot/src/dataflash.c b/target/linux/at91/image/dfboot/src/dataflash.c new file mode 100644 index 0000000..5e54460 --- /dev/null +++ b/target/linux/at91/image/dfboot/src/dataflash.c @@ -0,0 +1,208 @@ +/*---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support - ROUSSET - + *---------------------------------------------------------------------------- + * The software is delivered "AS IS" without warranty or condition of any + * kind, either express, implied or statutory. This includes without + * limitation any warranty or condition with respect to merchantability or + * fitness for any particular purpose, or against the infringements of + * intellectual property rights of others. + *---------------------------------------------------------------------------- + * File Name : dataflash.c + * Object : High level functions for the dataflash + * Creation : HIi 10/10/2003 + *---------------------------------------------------------------------------- + */ +#include "config.h" +#include "stdio.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} +}; + +int AT91F_DataflashInit(void) +{ + int i; + int dfcode; + int Nb_device = 0; + + AT91F_SpiInit(); + + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + 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; + Nb_device++; + 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; + Nb_device++; + 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; + Nb_device++; + 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; + Nb_device++; + break; + default: + break; + } + } + return (Nb_device); +} + + +void AT91F_DataflashPrintInfo(void) +{ + int i; + for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) { + if (dataflash_info[i].id != 0) { + printf ("DF:AT45DB"); + switch (dataflash_info[i].id) { + case AT45DB161: + printf ("161"); + break; + + case AT45DB321: + printf ("321"); + break; + + case AT45DB642: + printf ("642"); + break; + case AT45DB128: + printf ("128"); + break; + } + + printf ("\n# PG: %6d\n" + "PG SZ: %6d\n" + "SZ=%8d bytes\n" + "ADDR: %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); + } + } +} + + +/*------------------------------------------------------------------------------*/ +/* Function Name : AT91F_DataflashSelect */ +/* Object : Select the correct device */ +/*------------------------------------------------------------------------------*/ +static 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 : read_dataflash */ +/* Object : dataflash memory read */ +/*------------------------------------------------------------------------------*/ +int read_dataflash(unsigned long addr, unsigned long size, char *result) +{ + unsigned int AddrToRead = addr; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead); + if (pFlash == 0) + return -1; + + 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 int addr_src, + unsigned int size) +{ + unsigned int AddrToWrite = addr_dest; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect(pFlash, &AddrToWrite); + if (AddrToWrite == -1) + return -1; + + return AT91F_DataFlashWrite(pFlash, (unsigned char *) addr_src, AddrToWrite, size); +} + +/*-----------------------------------------------------------------------------*/ +/* Function Name : erase_dataflash */ +/* Object : Erase entire dataflash */ +/*-----------------------------------------------------------------------------*/ +int erase_dataflash(unsigned long addr_dest) +{ + unsigned int AddrToWrite = addr_dest; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite); + if (AddrToWrite == -1) + return -1; + + return AT91F_DataFlashErase(pFlash); +} + |