• Vladislav Zolotarov's avatar
    bnx2x: Separated FW from the source. · 0eae2a4d
    Vladislav Zolotarov authored
    >From now on FW will be downloaded from the binary file using request_firmware.
    
    There will be different files for every supported chip. Currently 57710 (e1) and
    57711 (e1h).
    
    File names have the following format: bnx2x-<chip version>-<FW version>.fw.
    ihex versions of current FW files are submitted in the next patch.
    
    Each binary file has a header in the following format:
    
    
    struct bnx2x_fw_file_section {
    	__be32 len;
    	__be32 offset;
    }
    
    struct bnx2x_fw_file_hdr {
    	struct bnx2x_fw_file_section init_ops;
    	struct bnx2x_fw_file_section init_ops_offsets;
    	struct bnx2x_fw_file_section init_data;
    	struct bnx2x_fw_file_section tsem_int_table_data;
    	struct bnx2x_fw_file_section tsem_pram_data;
    	struct bnx2x_fw_file_section usem_int_table_data;
    	struct bnx2x_fw_file_section usem_pram_data;
    	struct bnx2x_fw_file_section csem_int_table_data;
    	struct bnx2x_fw_file_section csem_pram_data;
    	struct bnx2x_fw_file_section xsem_int_table_data;
    	struct bnx2x_fw_file_section xsem_pram_data;
    	struct bnx2x_fw_file_section fw_version;
    }
    
    Each bnx2x_fw_file_section contains the length and the offset of the appropriate
    section in the binary file. Values are stored in the big endian format.
    
    Data types of arrays:
    
    init_data            __be32
    init_ops_offsets     __be16
    XXsem_pram_data         u8
    XXsem_int_table_data    u8
    init_ops             struct raw_op {
                              u8   op;
    			__be24 offset;
                            __be32 data;
    		     }
    fw_version              u8
    
    >From now boundaries of a specific initialization stage are stored in
    init_ops_offsets array instead of being defined by separate macroes. The index 
    in init_ops_offsets is calculated by BLOCK_OPS_IDX macro:
    
    #define BLOCK_OPS_IDX(block, stage, end) \
           (2*(((block)*STAGE_IDX_MAX) + (stage)) + (end))
    
    Security:
    
    In addition to sanity check of array boundaries bnx2x will check a FW version.
    Additional checks might be added in the future.
    Signed-off-by: default avatarVladislav Zolotarov <vladz@broadcom.com>
    Signed-off-by: default avatarEilon Greenstein <eilong@broadcom.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    0eae2a4d