diff options
Diffstat (limited to 'flash.h')
| -rw-r--r-- | flash.h | 50 |
1 files changed, 50 insertions, 0 deletions
@@ -34,6 +34,7 @@ #include "libflashrom.h" #include "layout.h" +#include "writeprotect.h" #define KiB (1024) #define MiB (1024 * KiB) @@ -176,6 +177,24 @@ enum flash_reg { MAX_REGISTERS }; +struct reg_bit_info { + /* Register containing the bit */ + enum flash_reg reg; + + /* Bit index within register */ + uint8_t bit_index; + + /* + * Writability of the bit. RW does not guarantee the bit will be + * writable, for example if status register protection is enabled. + */ + enum { + RO, /* Read only */ + RW, /* Readable and writable */ + OTP /* One-time programmable */ + } writability; +}; + struct flashchip { const char *vendor; const char *name; @@ -255,6 +274,37 @@ struct flashchip { /* SPI specific options (TODO: Make it a union in case other bustypes get specific options.) */ uint8_t wrea_override; /**< override opcode for write extended address register */ + struct reg_bit_map { + /* Status register protection bit (SRP) */ + struct reg_bit_info srp; + + /* Status register lock bit (SRP) */ + struct reg_bit_info srl; + + /* + * Note: some datasheets refer to configuration bits that + * function like TB/SEC/CMP bits as BP bits (e.g. BP3 for a bit + * that functions like TB). + * + * As a convention, any config bit that functions like a + * TB/SEC/CMP bit should be assigned to the respective + * tb/sec/cmp field in this structure, even if the datasheet + * uses a different name. + */ + + /* Block protection bits (BP) */ + /* Extra element for terminator */ + struct reg_bit_info bp[MAX_BP_BITS + 1]; + + /* Top/bottom protection bit (TB) */ + struct reg_bit_info tb; + + /* Sector/block protection bit (SEC) */ + struct reg_bit_info sec; + + /* Complement bit (CMP) */ + struct reg_bit_info cmp; + } reg_bits; }; typedef int (*chip_restore_fn_cb_t)(struct flashctx *flash, uint8_t status); |