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Add support for the JEDEC RES (Read Electronic Signature and Resume from

Browse source 
Powerdown) SPI command to flashrom to identify older SPI chips which
can't handle JEDEC RDID. Since RES gives a one-byte identifier which is
shared among many different vendors and even different sizes, we want to
match RES as a last resort if RDID returns 0xff 0xff 0xff.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>

This is a heavily reworked version of a patch by Fredrik Tolf, which was
Signed-off-by: Fredrik Tolf <fredrik@dolda2000.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3320 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Carl-Daniel Hailfinger 2008-05-15 03:19:49 +00:00
parent c7d29013db
commit a4868c44b5
4 changed files with 82 additions and 33 deletions
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6
util/flashrom/flash.h
View file

@ -177,6 +177,8 @@ extern struct flashchip flashchips[];
/* /*
* MX25 chips are SPI, first byte of device ID is memory type, * MX25 chips are SPI, first byte of device ID is memory type,
* second byte of device ID is log(bitsize)-9. * second byte of device ID is log(bitsize)-9.
* Generalplus SPI chips seem to be compatible with Macronix
* and use the same set of IDs.
*/ */
#define MX_ID 0xC2 /* Macronix (MX) */ #define MX_ID 0xC2 /* Macronix (MX) */
#define MX_25L512 0x2010 /* 2^19 kbit or 2^16 kByte */ #define MX_25L512 0x2010 /* 2^19 kbit or 2^16 kByte */
@ -266,6 +268,7 @@ extern struct flashchip flashchips[];
#define ST_M25P10A 0x2011 #define ST_M25P10A 0x2011
#define ST_M25P20 0x2012 #define ST_M25P20 0x2012
#define ST_M25P40 0x2013 #define ST_M25P40 0x2013
#define ST_M25P40_RES 0x12
#define ST_M25P80 0x2014 #define ST_M25P80 0x2014
#define ST_M25P16 0x2015 #define ST_M25P16 0x2015
#define ST_M25P32 0x2016 #define ST_M25P32 0x2016
@ -366,7 +369,8 @@ int coreboot_init(void);
extern char *lb_part, *lb_vendor; extern char *lb_part, *lb_vendor;
/* spi.c */ /* spi.c */
int probe_spi(struct flashchip *flash); int probe_spi_rdid(struct flashchip *flash);
int probe_spi_res(struct flashchip *flash);
int it87xx_probe_spi_flash(const char *name); int it87xx_probe_spi_flash(const char *name);
int spi_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr); int spi_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr);
void spi_write_enable(); void spi_write_enable();

63
util/flashrom/flashchips.c
View file

@ -49,26 +49,26 @@ struct flashchip flashchips[] = {
{"Fujitsu", "MBM29F400TC", FUJITSU_ID, MBM29F400TC_STRANGE, 512, 64 * 1024, TEST_UNTESTED, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt}, {"Fujitsu", "MBM29F400TC", FUJITSU_ID, MBM29F400TC_STRANGE, 512, 64 * 1024, TEST_UNTESTED, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt},
{"Intel", "82802AB", INTEL_ID, 173, 512, 64 * 1024, TEST_UNTESTED, probe_82802ab, erase_82802ab, write_82802ab}, {"Intel", "82802AB", INTEL_ID, 173, 512, 64 * 1024, TEST_UNTESTED, probe_82802ab, erase_82802ab, write_82802ab},
{"Intel", "82802AC", INTEL_ID, 172, 1024, 64 * 1024, TEST_UNTESTED, probe_82802ab, erase_82802ab, write_82802ab}, {"Intel", "82802AC", INTEL_ID, 172, 1024, 64 * 1024, TEST_UNTESTED, probe_82802ab, erase_82802ab, write_82802ab},
{"Macronix", "MX25L4005", MX_ID, MX_25L4005, 512, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Macronix", "MX25L4005", MX_ID, MX_25L4005, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Macronix", "MX25L8005", MX_ID, MX_25L8005, 1024, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Macronix", "MX25L8005", MX_ID, MX_25L8005, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Macronix", "MX25L1605", MX_ID, MX_25L1605, 2048, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Macronix", "MX25L1605", MX_ID, MX_25L1605, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Macronix", "MX25L3205", MX_ID, MX_25L3205, 4096, 256, TEST_OK_PREW, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Macronix", "MX25L3205", MX_ID, MX_25L3205, 4096, 256, TEST_OK_PREW, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Macronix", "MX29F002", MX_ID, MX_29F002, 256, 64 * 1024, TEST_UNTESTED, probe_29f002, erase_29f002, write_29f002}, {"Macronix", "MX29F002", MX_ID, MX_29F002, 256, 64 * 1024, TEST_UNTESTED, probe_29f002, erase_29f002, write_29f002},
#ifndef DISABLE_DOC #ifndef DISABLE_DOC
{"M-Systems", "MD-2802", MSYSTEMS_ID, MSYSTEMS_MD2802, 8, 8 * 1024, TEST_UNTESTED, probe_md2802, erase_md2802, write_md2802, read_md2802}, {"M-Systems", "MD-2802", MSYSTEMS_ID, MSYSTEMS_MD2802, 8, 8 * 1024, TEST_UNTESTED, probe_md2802, erase_md2802, write_md2802, read_md2802},
#endif #endif
{"PMC", "Pm25LV010", PMC_ID, PMC_25LV010, 128, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV010", PMC_ID, PMC_25LV010, 128, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV016B", PMC_ID, PMC_25LV016B, 2048, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV016B", PMC_ID, PMC_25LV016B, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV020", PMC_ID, PMC_25LV020, 256, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV020", PMC_ID, PMC_25LV020, 256, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV040", PMC_ID, PMC_25LV040, 512, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV040", PMC_ID, PMC_25LV040, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV080B", PMC_ID, PMC_25LV080B, 1024, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV080B", PMC_ID, PMC_25LV080B, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV512", PMC_ID, PMC_25LV512, 64, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"PMC", "Pm25LV512", PMC_ID, PMC_25LV512, 64, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004}, {"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
{"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004}, {"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
{"Sharp", "LHF00L04", SHARP_ID, SHARP_LHF00L04, 1024, 64 * 1024, TEST_UNTESTED, probe_lhf00l04, erase_lhf00l04, write_lhf00l04}, {"Sharp", "LHF00L04", SHARP_ID, SHARP_LHF00L04, 1024, 64 * 1024, TEST_UNTESTED, probe_lhf00l04, erase_lhf00l04, write_lhf00l04},
{"Spansion", "S25FL016A", SPANSION_ID, SPANSION_S25FL016A, 2048, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Spansion", "S25FL016A", SPANSION_ID, SPANSION_S25FL016A, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"SST", "SST25VF016B", SST_ID, SST_25VF016B, 2048, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"SST", "SST25VF016B", SST_ID, SST_25VF016B, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"SST", "SST25VF040B", SST_ID, SST_25VF040B, 512, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"SST", "SST25VF040B", SST_ID, SST_25VF040B, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"SST", "SST28SF040A", SST_ID, SST_28SF040, 512, 256, TEST_UNTESTED, probe_28sf040, erase_28sf040, write_28sf040}, {"SST", "SST28SF040A", SST_ID, SST_28SF040, 512, 256, TEST_UNTESTED, probe_28sf040, erase_28sf040, write_28sf040},
{"SST", "SST29EE020A", SST_ID, SST_29EE020A, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"SST", "SST29EE020A", SST_ID, SST_29EE020A, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"SST", "SST39SF010A", SST_ID, SST_39SF010, 128, 4096, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_39sf020}, {"SST", "SST39SF010A", SST_ID, SST_39SF010, 128, 4096, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_39sf020},
@ -91,15 +91,16 @@ struct flashchip flashchips[] = {
{"SST", "SST49LF040B", SST_ID, SST_49LF040B, 512, 64 * 1024, TEST_UNTESTED, probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub}, {"SST", "SST49LF040B", SST_ID, SST_49LF040B, 512, 64 * 1024, TEST_UNTESTED, probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub},
{"SST", "SST49LF080A", SST_ID, SST_49LF080A, 1024, 4096, TEST_UNTESTED, probe_jedec, erase_49lf040, write_49lf040}, {"SST", "SST49LF080A", SST_ID, SST_49LF080A, 1024, 4096, TEST_UNTESTED, probe_jedec, erase_49lf040, write_49lf040},
{"SST", "SST49LF160C", SST_ID, SST_49LF160C, 2048, 4 * 1024, TEST_UNTESTED, probe_49lfxxxc, erase_49lfxxxc, write_49lfxxxc}, {"SST", "SST49LF160C", SST_ID, SST_49LF160C, 2048, 4 * 1024, TEST_UNTESTED, probe_49lfxxxc, erase_49lfxxxc, write_49lfxxxc},
{"ST", "M25P05-A", ST_ID, ST_M25P05A, 64, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P05-A", ST_ID, ST_M25P05A, 64, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P10-A", ST_ID, ST_M25P10A, 128, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P10-A", ST_ID, ST_M25P10A, 128, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P20", ST_ID, ST_M25P20, 256, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P20", ST_ID, ST_M25P20, 256, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P40", ST_ID, ST_M25P40, 512, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P40", ST_ID, ST_M25P40, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P80", ST_ID, ST_M25P80, 1024, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P40-old", ST_ID, ST_M25P40_RES, 512, 256, TEST_UNTESTED, probe_spi_res, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P16", ST_ID, ST_M25P16, 2048, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P80", ST_ID, ST_M25P80, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P32", ST_ID, ST_M25P32, 4096, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P16", ST_ID, ST_M25P16, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P64", ST_ID, ST_M25P64, 8192, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P32", ST_ID, ST_M25P32, 4096, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P128", ST_ID, ST_M25P128, 16384, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"ST", "M25P64", ST_ID, ST_M25P64, 8192, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M25P128", ST_ID, ST_M25P128, 16384, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"ST", "M29F002B", ST_ID, ST_M29F002B, 256, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M29F002B", ST_ID, ST_M29F002B, 256, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"ST", "M29F002T/NT", ST_ID, ST_M29F002T, 256, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M29F002T/NT", ST_ID, ST_M29F002T, 256, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"ST", "M29F040B", ST_ID, ST_M29F040B, 512, 64 * 1024, TEST_UNTESTED, probe_29f040b, erase_29f040b, write_29f040b}, {"ST", "M29F040B", ST_ID, ST_M29F040B, 512, 64 * 1024, TEST_UNTESTED, probe_29f040b, erase_29f040b, write_29f040b},
@ -118,10 +119,10 @@ struct flashchip flashchips[] = {
{"SyncMOS", "S29C51001T", SYNCMOS_ID, S29C51001T, 128, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002}, {"SyncMOS", "S29C51001T", SYNCMOS_ID, S29C51001T, 128, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002},
{"SyncMOS", "S29C51002T", SYNCMOS_ID, S29C51002T, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002}, {"SyncMOS", "S29C51002T", SYNCMOS_ID, S29C51002T, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002},
{"SyncMOS", "S29C51004T", SYNCMOS_ID, S29C51004T, 512, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002}, {"SyncMOS", "S29C51004T", SYNCMOS_ID, S29C51004T, 512, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002},
{"Winbond", "W25x10", WINBOND_NEX_ID, W_25X10, 128, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Winbond", "W25x10", WINBOND_NEX_ID, W_25X10, 128, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Winbond", "W25x20", WINBOND_NEX_ID, W_25X20, 256, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Winbond", "W25x20", WINBOND_NEX_ID, W_25X20, 256, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Winbond", "W25x40", WINBOND_NEX_ID, W_25X40, 512, 256, TEST_OK_PREW, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Winbond", "W25x40", WINBOND_NEX_ID, W_25X40, 512, 256, TEST_OK_PREW, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Winbond", "W25x80", WINBOND_NEX_ID, W_25X80, 1024, 256, TEST_UNTESTED, probe_spi, spi_chip_erase_c7, spi_chip_write, spi_chip_read}, {"Winbond", "W25x80", WINBOND_NEX_ID, W_25X80, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"Winbond", "W29C011", WINBOND_ID, W_29C011, 128, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"Winbond", "W29C011", WINBOND_ID, W_29C011, 128, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"Winbond", "W29C020C", WINBOND_ID, W_29C020C, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"Winbond", "W29C020C", WINBOND_ID, W_29C020C, 256, 128, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"Winbond", "W29C040P", WINBOND_ID, W_29C040P, 512, 256, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec}, {"Winbond", "W29C040P", WINBOND_ID, W_29C040P, 512, 256, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
@ -136,11 +137,11 @@ struct flashchip flashchips[] = {
{"Winbond", "W39V080FA", WINBOND_ID, W_39V080FA, 1024, 64*1024, TEST_UNTESTED, probe_winbond_fwhub, erase_winbond_fwhub, write_winbond_fwhub}, {"Winbond", "W39V080FA", WINBOND_ID, W_39V080FA, 1024, 64*1024, TEST_UNTESTED, probe_winbond_fwhub, erase_winbond_fwhub, write_winbond_fwhub},
{"Winbond", "W39V080FA (dual mode)",WINBOND_ID, W_39V080FA_DM, 512, 64*1024, TEST_UNTESTED, probe_winbond_fwhub, erase_winbond_fwhub, write_winbond_fwhub}, {"Winbond", "W39V080FA (dual mode)",WINBOND_ID, W_39V080FA_DM, 512, 64*1024, TEST_UNTESTED, probe_winbond_fwhub, erase_winbond_fwhub, write_winbond_fwhub},
{"EON", "unknown EON SPI chip", EON_ID_NOPREFIX,GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi, NULL, NULL}, {"EON", "unknown EON SPI chip", EON_ID_NOPREFIX,GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi_rdid, NULL, NULL},
{"Macronix", "unknown Macronix SPI chip", MX_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi, NULL, NULL}, {"Macronix", "unknown Macronix SPI chip", MX_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi_rdid, NULL, NULL},
{"PMC", "unknown PMC SPI chip", PMC_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi, NULL, NULL}, {"PMC", "unknown PMC SPI chip", PMC_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi_rdid, NULL, NULL},
{"SST", "unknown SST SPI chip", SST_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi, NULL, NULL}, {"SST", "unknown SST SPI chip", SST_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi_rdid, NULL, NULL},
{"ST", "unknown ST SPI chip", ST_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi, NULL, NULL}, {"ST", "unknown ST SPI chip", ST_ID, GENERIC_DEVICE_ID, 0, 256, TEST_UNTESTED, probe_spi_rdid, NULL, NULL},
{NULL,} {NULL,}
}; };

41
util/flashrom/spi.c
View file

@ -49,6 +49,16 @@ static int spi_rdid(unsigned char *readarr)
return 0; return 0;
} }
static int spi_res(unsigned char *readarr)
{
const unsigned char cmd[JEDEC_RES_OUTSIZE] = {JEDEC_RES, 0, 0, 0};
if (spi_command(JEDEC_RES_OUTSIZE, JEDEC_RES_INSIZE, cmd, readarr))
return 1;
printf_debug("RES returned %02x.\n", readarr[0]);
return 0;
}
void spi_write_enable() void spi_write_enable()
{ {
const unsigned char cmd[JEDEC_WREN_OUTSIZE] = {JEDEC_WREN}; const unsigned char cmd[JEDEC_WREN_OUTSIZE] = {JEDEC_WREN};
@ -65,7 +75,7 @@ void spi_write_disable()
spi_command(JEDEC_WRDI_OUTSIZE, JEDEC_WRDI_INSIZE, cmd, NULL); spi_command(JEDEC_WRDI_OUTSIZE, JEDEC_WRDI_INSIZE, cmd, NULL);
} }
int probe_spi(struct flashchip *flash) int probe_spi_rdid(struct flashchip *flash)
{ {
unsigned char readarr[3]; unsigned char readarr[3];
uint32_t manuf_id; uint32_t manuf_id;
@ -102,6 +112,35 @@ int probe_spi(struct flashchip *flash)
return 0; return 0;
} }
int probe_spi_res(struct flashchip *flash)
{
unsigned char readarr[3];
uint32_t model_id;
if (!spi_rdid(readarr)) {
/* Check if RDID returns 0xff 0xff 0xff, then we use RES. */
if ((readarr[0] != 0xff) || (readarr[1] != 0xff) ||
(readarr[2] != 0xff))
return 0;
} else {
/* We couldn't issue RDID, it's pointless to try RES. */
return 0;
}
if (!spi_res(readarr)) {
model_id = readarr[0];
printf_debug("%s: id 0x%x\n", __FUNCTION__, model_id);
if (model_id == flash->model_id) {
/* Print the status register to tell the
* user about possible write protection.
*/
spi_prettyprint_status_register(flash);
return 1;
}
}
return 0;
}
uint8_t spi_read_status_register() uint8_t spi_read_status_register()
{ {
const unsigned char cmd[JEDEC_RDSR_OUTSIZE] = {JEDEC_RDSR}; const unsigned char cmd[JEDEC_RDSR_OUTSIZE] = {JEDEC_RDSR};

5
util/flashrom/spi.h
View file

@ -29,6 +29,11 @@
#define JEDEC_RDID_OUTSIZE 0x01 #define JEDEC_RDID_OUTSIZE 0x01
#define JEDEC_RDID_INSIZE 0x03 #define JEDEC_RDID_INSIZE 0x03
/* Read Electronic Signature */
#define JEDEC_RES 0xab
#define JEDEC_RES_OUTSIZE 0x04
#define JEDEC_RES_INSIZE 0x01
/* Write Enable */ /* Write Enable */
#define JEDEC_WREN 0x06 #define JEDEC_WREN 0x06
#define JEDEC_WREN_OUTSIZE 0x01 #define JEDEC_WREN_OUTSIZE 0x01