diff options
Diffstat (limited to 'spi4ba.c')
| -rw-r--r-- | spi4ba.c | 100 |
1 files changed, 100 insertions, 0 deletions
@@ -918,3 +918,103 @@ int spi_block_erase_dc_4ba_direct(struct flashctx *flash, unsigned int addr, /* FIXME: Check the status register for errors. */ return 0; } + +/* Selector for 4k eraser that chooses between 4-bytes addressing mode + and use of Extended Address Register from 3-bytes addressing mode */ +int spi_block_erase_20_4ba_selector(struct flashctx *flash, unsigned int addr, + unsigned int blocklen) +{ + msg_trace("-> %s\n", __func__); + + return (flash->chip->feature_bits & FEATURE_4BA_EXTENDED_ADDR_REG) ? + spi_block_erase_20_4ba_ereg(flash, addr, blocklen) : + spi_block_erase_20_4ba(flash, addr, blocklen); +} + +/* Selector for 32k eraser that chooses between 4-bytes addressing mode + and use of Extended Address Register from 3-bytes addressing mode */ +int spi_block_erase_52_4ba_selector(struct flashctx *flash, unsigned int addr, + unsigned int blocklen) +{ + msg_trace("-> %s\n", __func__); + + return (flash->chip->feature_bits & FEATURE_4BA_EXTENDED_ADDR_REG) ? + spi_block_erase_52_4ba_ereg(flash, addr, blocklen) : + spi_block_erase_52_4ba(flash, addr, blocklen); +} + +/* Selector for 64k eraser that chooses between 4-bytes addressing mode + and use of Extended Address Register from 3-bytes addressing mode */ +int spi_block_erase_d8_4ba_selector(struct flashctx *flash, unsigned int addr, + unsigned int blocklen) +{ + msg_trace("-> %s\n", __func__); + + return (flash->chip->feature_bits & FEATURE_4BA_EXTENDED_ADDR_REG) ? + spi_block_erase_d8_4ba_ereg(flash, addr, blocklen) : + spi_block_erase_d8_4ba(flash, addr, blocklen); +} + +/* Chooser for erase function by instruction opcode for block eraser instructions + to work with 4-bytes addressing flash chips. This chooser is called from sfdp.c + during parse of 8th & 9th dwords of SFDP Basic Flash Parameter Table */ +erasefunc_t *spi_get_erasefn_from_opcode_4ba(uint8_t opcode) +{ + msg_trace("-> %s\n", __func__); + + switch(opcode){ + case 0xff: + case 0x00: + /* Not specified, assuming "not supported". */ + return NULL; + case 0x20: + return &spi_block_erase_20_4ba_selector; /* selector */ + case 0x52: + return &spi_block_erase_52_4ba_selector; /* selector */ + case 0x60: + return &spi_block_erase_60; + case 0x62: + return &spi_block_erase_62; + case 0xc7: + return &spi_block_erase_c7; + case 0xd8: + return &spi_block_erase_d8_4ba_selector; /* selector */ + case 0x50: + case 0x81: + case 0xc4: + case 0xd7: + case 0xdb: + msg_cinfo("%s: erase opcode (0x%02x) doesn't have its 4-bytes addressing version." + " Please report this at flashrom@flashrom.org\n", __func__, opcode); + return NULL; + default: + msg_cinfo("%s: unknown erase opcode (0x%02x). Please report " + "this at flashrom@flashrom.org\n", __func__, opcode); + return NULL; + } +} + +/* Chooser for erase function by instruction opcode for block eraser instructions + which can be used from ANY mode (3-bytes or 4-bytes). This chooser is called + from sfdp.c during parse of SFDP 4-Bytes Address Instruction Table (JESD216B) */ +erasefunc_t *spi_get_erasefn_from_opcode_4ba_direct(uint8_t opcode) +{ + msg_trace("-> %s\n", __func__); + + switch(opcode){ + case 0xff: + case 0x00: + /* Not specified, assuming "not supported". */ + return NULL; + case 0x21: + return &spi_block_erase_21_4ba_direct; /* direct */ + case 0x5C: + return &spi_block_erase_5c_4ba_direct; /* direct */ + case 0xdc: + return &spi_block_erase_dc_4ba_direct; /* direct */ + default: + msg_cinfo("%s: unknown erase opcode (0x%02x). Please report " + "this at flashrom@flashrom.org\n", __func__, opcode); + return NULL; + } +} |
