Author: stefanct Date: Thu Sep 12 10:29:06 2013 New Revision: 1738 URL: http://flashrom.org/trac/flashrom/changeset/1738
Log: Enable sector erase function for selected ST M50 chips.
Affected chips: M50FLW040A, M50FLW040B, M50FLW080A, M50FLW080B.
Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at Acked-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at
Modified: trunk/flashchips.c trunk/stm50.c
Modified: trunk/flashchips.c ============================================================================== --- trunk/flashchips.c Thu Sep 12 10:29:00 2013 (r1737) +++ trunk/flashchips.c Thu Sep 12 10:29:06 2013 (r1738) @@ -11022,7 +11022,7 @@ {4 * 1024, 16}, /* sector */ {4 * 1024, 16}, /* sector */ }, - .block_erase = NULL, + .block_erase = erase_sector_stm50, }, { .eraseblocks = { {64 * 1024, 8}, }, .block_erase = erase_block_82802ab, @@ -11055,7 +11055,7 @@ {64 * 1024, 5}, /* block */ {4 * 1024, 16}, /* sector */ }, - .block_erase = NULL, + .block_erase = erase_sector_stm50, }, { .eraseblocks = { {64 * 1024, 8}, }, .block_erase = erase_block_82802ab, @@ -11088,7 +11088,7 @@ {4 * 1024, 16}, /* sector */ {4 * 1024, 16}, /* sector */ }, - .block_erase = NULL, + .block_erase = erase_sector_stm50, }, { .eraseblocks = { {64 * 1024, 16}, }, .block_erase = erase_block_82802ab, @@ -11121,7 +11121,7 @@ {64 * 1024, 13}, /* block */ {4 * 1024, 16}, /* sector */ }, - .block_erase = NULL, + .block_erase = erase_sector_stm50, }, { .eraseblocks = { {64 * 1024, 16}, }, .block_erase = erase_block_82802ab,
Modified: trunk/stm50.c ============================================================================== --- trunk/stm50.c Thu Sep 12 10:29:00 2013 (r1737) +++ trunk/stm50.c Thu Sep 12 10:29:06 2013 (r1738) @@ -84,10 +84,9 @@ return 0; }
-/* This function is unused. */ -int erase_sector_stm50(struct flashctx *flash, unsigned int sector, unsigned int sectorsize) +static int stm50_erase_sector(struct flashctx *flash, unsigned int addr) { - chipaddr bios = flash->virtual_memory + sector; + chipaddr bios = flash->virtual_memory + addr;
// clear status register chip_writeb(flash, 0x50, bios); @@ -96,8 +95,21 @@ chip_writeb(flash, 0xd0, bios); programmer_delay(10);
- wait_82802ab(flash); + uint8_t status = wait_82802ab(flash); + print_status_82802ab(status);
- /* FIXME: Check the status register for errors. */ - return 0; + return status == 0x80; +} + +/* Some ST M50* chips do support erasing of sectors. This function will derive the erase function to use from + * the length of the of the block. For calls that apparently do not address a sector (but a block) we just call + * the block erase function instead. FIXME: This duplicates the behavior of the remaining erasers for blocks and + * might be fixed when flashrom supports multiple functions per eraser or erasers that do erase parts of the + * chip only. */ +int erase_sector_stm50(struct flashctx *flash, unsigned int addr, unsigned int len) +{ + if (len == 4096) + return stm50_erase_sector(flash, addr); + else + return erase_block_82802ab(flash, addr, len); }