diff options
| author | Rudolf Marek <r.marek@assembler.cz> | 2008-06-30 21:45:17 +0000 |
|---|---|---|
| committer | Rudolf Marek <r.marek@assembler.cz> | 2008-06-30 21:45:17 +0000 |
| commit | d8a7e7d043db8395c03aeeb23849a73ab066af8a (patch) | |
| tree | 703e79e1e0b0cc110d7798352dcf3b4fbf23cdd5 /util/flashrom/spi.c | |
| parent | 4a17e02003f40495b37393b017e7c9ea4bb85638 (diff) | |
Mine AMIC flash chip needs 4 bytes RDID. Following patch adds support for that.
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3399 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flashrom/spi.c')
| -rw-r--r-- | util/flashrom/spi.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/util/flashrom/spi.c b/util/flashrom/spi.c index 60fa99028e..7fdad82c49 100644 --- a/util/flashrom/spi.c +++ b/util/flashrom/spi.c @@ -44,11 +44,11 @@ int spi_command(unsigned int writecnt, unsigned int readcnt, const unsigned char return 1; } -static int spi_rdid(unsigned char *readarr) +static int spi_rdid(unsigned char *readarr, int bytes) { const unsigned char cmd[JEDEC_RDID_OUTSIZE] = {JEDEC_RDID}; - if (spi_command(JEDEC_RDID_OUTSIZE, JEDEC_RDID_INSIZE, cmd, readarr)) + if (spi_command(JEDEC_RDID_OUTSIZE, bytes, cmd, readarr)) return 1; printf_debug("RDID returned %02x %02x %02x.\n", readarr[0], readarr[1], readarr[2]); return 0; @@ -80,13 +80,13 @@ void spi_write_disable() spi_command(JEDEC_WRDI_OUTSIZE, JEDEC_WRDI_INSIZE, cmd, NULL); } -int probe_spi_rdid(struct flashchip *flash) +static int probe_spi_rdid_generic(struct flashchip *flash, int bytes) { - unsigned char readarr[3]; + unsigned char readarr[4]; uint32_t manuf_id; uint32_t model_id; - if (spi_rdid(readarr)) + if (spi_rdid(readarr, bytes)) return 0; if (!oddparity(readarr[0])) @@ -98,6 +98,10 @@ int probe_spi_rdid(struct flashchip *flash) printf_debug("RDID byte 1 parity violation.\n"); manuf_id = (readarr[0] << 8) | readarr[1]; model_id = readarr[2]; + if (bytes > 3) { + model_id <<= 8; + model_id |= readarr[3]; + } } else { manuf_id = readarr[0]; model_id = (readarr[1] << 8) | readarr[2]; @@ -123,12 +127,25 @@ int probe_spi_rdid(struct flashchip *flash) return 0; } +int probe_spi_rdid(struct flashchip *flash) { + return probe_spi_rdid_generic(flash, 3); +} + +/* support 4 bytes flash ID */ +int probe_spi_rdid4(struct flashchip *flash) { + + /* only some SPI chipsets support 4 bytes commands */ + if (!((ich7_detected) || (ich9_detected) || (viaspi_detected))) + return 0; + return probe_spi_rdid_generic(flash, 4); +} + int probe_spi_res(struct flashchip *flash) { unsigned char readarr[3]; uint32_t model_id; - if (spi_rdid(readarr)) + if (spi_rdid(readarr, 3)) /* We couldn't issue RDID, it's pointless to try RES. */ return 0; |