diff options
author | wdenk <wdenk> | 2003-06-16 23:50:08 (GMT) |
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committer | wdenk <wdenk> | 2003-06-16 23:50:08 (GMT) |
commit | 2abbe0754759f94c79125a2534fbc4be74f416bc (patch) | |
tree | 98c52ea3bade5efef565044ede183d6c2b30629b /drivers/dataflash.c | |
parent | 71f9511803de65a3b98d2f592d418da1d1539f13 (diff) | |
download | u-boot-2abbe0754759f94c79125a2534fbc4be74f416bc.tar.xz |
* Patch by Nicolas Lacressonniere, 11 Jun 2003:
Modifications for Atmel AT91RM9200DK ARM920T based development kit
- Add Atmel DataFlash support for reading and writing.
- Add possibility to boot a Linux from DataFlash with BOOTM command.
- Add Flash detection on Atmel AT91RM9200DK
(between Atmel AT49BV1614 and AT49BV1614A flashes)
- Replace old Ethernet PHY layer functions
- Change link address
* Patch by Frank Smith, 9 Jun 2003:
use CRIT_EXCEPTION for machine check on 4xx
* Patch by Detlev Zundel, 13 Jun 2003:
added implementation of the "carinfo" command in cmd_immap.c
Diffstat (limited to 'drivers/dataflash.c')
-rw-r--r-- | drivers/dataflash.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/drivers/dataflash.c b/drivers/dataflash.c new file mode 100644 index 0000000..a0a4b62 --- /dev/null +++ b/drivers/dataflash.c @@ -0,0 +1,245 @@ +/* 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} +}; + +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); + + +int AT91F_DataflashInit (void) +{ + int i, j; + int dfcode; + + 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; + 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; + + default: + break; + } + + for (j = 0; j < dataflash_info[i].Device.pages_number; j++) + dataflash_info[i].protect[j] = FLAG_PROTECT_SET; + + } + return (1); +} + + + +void dataflash_print_info (void) +{ + int i; + + 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; + } + + 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); + } + } +} + + +/*------------------------------------------------------------------------------*/ +/* 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 : 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 -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 long addr_src, + unsigned long size) +{ + extern AT91S_DataFlashStatus AT91F_DataFlashWrite( + AT91PS_DataFlash, uchar *, int, int); + int AddrToWrite = addr_dest; + AT91PS_DataFlash pFlash = &DataFlashInst; + + pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite); + 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 |