diff options
Diffstat (limited to 'src/southbridge/amd')
| -rw-r--r-- | src/southbridge/amd/sb600/sb600_sata.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb600/sb600_sata.c b/src/southbridge/amd/sb600/sb600_sata.c index 970af07512..933f59936e 100644 --- a/src/southbridge/amd/sb600/sb600_sata.c +++ b/src/southbridge/amd/sb600/sb600_sata.c @@ -175,6 +175,35 @@ static void sata_init(struct device *dev) byte = readb(sata_bar5 + 0x128 + 0x80 * i); printk_spew("SATA port %i status = %x\n", i, byte); byte &= 0xF; + + if( byte == 0x1 ) { + /* If the drive status is 0x1 then we see it but we aren't talking to it. */ + /* Try to do something about it. */ + printk_spew("SATA device detected but not talking. Trying lower speed.\n"); + + /* Read in Port-N Serial ATA Control Register */ + byte = readb(sata_bar5 + 0x12C + 0x80 * i); + + /* Set Reset Bit and 1.5g bit */ + byte |= 0x11; + writeb(byte, (sata_bar5 + 0x12C + 0x80 * i)); + + /* Wait 1ms */ + mdelay(1); + + /* Clear Reset Bit */ + byte &= ~0x01; + writeb(byte, (sata_bar5 + 0x12C + 0x80 * i)); + + /* Wait 1ms */ + mdelay(1); + + /* Reread status */ + byte = readb(sata_bar5 + 0x128 + 0x80 * i); + printk_spew("SATA port %i status = %x\n", i, byte); + byte &= 0xF; + } + if (byte == 0x3) { for (j = 0; j < 10; j++) { if (!sata_drive_detect(i, ((i / 2) == 0) ? sata_bar0 : sata_bar2)) |