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Adjust EEPROM/flash detection to fit expected manufacturing practice.

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This commit is contained in:
Michael Brown 2006-12-05 16:00:06 +00:00
parent 6a91a03409
commit 4c3e0fede5
1 changed files with 31 additions and 8 deletions
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39
src/drivers/net/etherfabric.c
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@ -1545,6 +1545,11 @@ static struct efab_mac_operations ef1002_mac_operations = {
#define FCN_EE_SPI_HDATA0_LBN 0
#define FCN_EE_SPI_HDATA0_WIDTH 32
/* VPI configuration register */
#define FCN_VPD_CONFIG_REG_KER 0x0140
#define FCN_VPD_9BIT_LBN 1
#define FCN_VPD_9BIT_WIDTH 1
/* NIC status register */
#define FCN_NIC_STAT_REG 0x0200
#define ONCHIP_SRAM_LBN 16
@ -2285,6 +2290,9 @@ static int falcon_spi_rw ( struct spi_bus *bus, struct spi_device *device,
*
*/
static void falcon_init_spi ( struct efab_nic *efab ) {
efab_oword_t reg;
int eeprom_9bit;
/* Initialise SPI bus */
efab->spi.rw = falcon_spi_rw;
efab->falcon_eeprom.bus = &efab->spi;
@ -2292,16 +2300,31 @@ static void falcon_init_spi ( struct efab_nic *efab ) {
efab->falcon_flash.bus = &efab->spi;
efab->falcon_flash.slave = FCN_EE_SPI_FLASH;
/* Initialise EEPROM, if present */
/* Initialise flash if present */
if ( efab->has_flash ) {
DBG ( "Flash is present\n" );
init_at25f1024 ( &efab->falcon_flash );
init_at25040 ( &efab->falcon_eeprom );
} else {
init_mc25xx640 ( &efab->falcon_eeprom );
/* Falcon's SPI interface cannot support a block size
* larger than 16, so forcibly reduce it
*/
efab->falcon_eeprom.nvs.block_size = 16;
}
/* Initialise EEPROM if present */
if ( efab->has_eeprom ) {
if ( efab->is_asic ) {
falcon_read ( efab, &reg, FCN_VPD_CONFIG_REG_KER );
eeprom_9bit = EFAB_OWORD_FIELD ( reg, FCN_VPD_9BIT );
} else {
eeprom_9bit = 1;
}
if ( eeprom_9bit ) {
DBG ( "Small EEPROM is present\n" );
init_at25040 ( &efab->falcon_eeprom );
} else {
DBG ( "Large EEPROM is present\n" );
init_mc25xx640 ( &efab->falcon_eeprom );
/* Falcon's SPI interface cannot support a block
size larger than 16, so forcibly reduce it
*/
efab->falcon_eeprom.nvs.block_size = 16;
}
}
}