diff options
Diffstat (limited to 'src/drivers/elog/elog.c')
| -rw-r--r-- | src/drivers/elog/elog.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c index cff78867ce..de349281d6 100644 --- a/src/drivers/elog/elog.c +++ b/src/drivers/elog/elog.c @@ -72,14 +72,33 @@ static u16 event_count; static int elog_initialized; static struct spi_flash *elog_spi; + +static inline u32 get_rom_size(void) +{ + u32 rom_size; + + /* Assume the used space of the ROM image starts from 0. The + * physical size of the device may not be completely used. */ + rom_size = elog_spi->size; + if (rom_size > CONFIG_ROM_SIZE) + rom_size = CONFIG_ROM_SIZE; + + return rom_size; +} + /* * Convert a memory mapped flash address into a flash offset */ static inline u32 elog_flash_address_to_offset(u8 *address) { + u32 rom_size; + if (!elog_spi) return 0; - return (u32)address - ((u32)~0UL - elog_spi->size + 1); + + rom_size = get_rom_size(); + + return (u32)address - ((u32)~0UL - rom_size + 1); } /* @@ -87,9 +106,14 @@ static inline u32 elog_flash_address_to_offset(u8 *address) */ static inline u8* elog_flash_offset_to_address(u32 offset) { + u32 rom_size; + if (!elog_spi) return NULL; - return (u8*)((u32)~0UL - elog_spi->size + 1 + offset); + + rom_size = get_rom_size(); + + return (u8*)((u32)~0UL - rom_size + 1 + offset); } /* |