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sfc: Clean up non-volatile memory partitioning

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Move flash and EEPROM partition boundary constants into spi.h and rename
them to be consistent.

Add a comment on the partitioning.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings
2008-11-04 20:33:11 +00:00
committed by Jeff Garzik
parent 2883f552f2
commit 0a95f56323
4 changed files with 24 additions and 11 deletions
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17
drivers/net/sfc/spi.h
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@@ -63,4 +63,21 @@ int falcon_spi_read(const struct efx_spi_device *spi, loff_t start,
int falcon_spi_write(const struct efx_spi_device *spi, loff_t start,
size_t len, size_t *retlen, const u8 *buffer);
/*
* SFC4000 flash is partitioned into:
* 0-0x400 chip and board config (see falcon_hwdefs.h)
* 0x400-0x8000 unused (or may contain VPD if EEPROM not present)
* 0x8000-end boot code (mapped to PCI expansion ROM)
* SFC4000 small EEPROM (size < 0x400) is used for VPD only.
* SFC4000 large EEPROM (size >= 0x400) is partitioned into:
* 0-0x400 chip and board config
* configurable VPD
* 0x800-0x1800 boot config
* Aside from the chip and board config, all of these are optional and may
* be absent or truncated depending on the devices used.
*/
#define FALCON_NVCONFIG_END 0x400U
#define EFX_EEPROM_BOOTCONFIG_START 0x800U
#define EFX_EEPROM_BOOTCONFIG_END 0x1800U
#endif /* EFX_SPI_H */