diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-07-31 21:37:26 +0200 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2020-08-02 12:18:40 +0000 |
| commit | c3be055fbecb320766fbe220a09370687735a4d3 (patch) | |
| tree | 38c7505da1c0f3c0878ff34cb4855b33c10b74b3 /src/soc/intel | |
| parent | e231949b78fee38dca823bc76467f81166e00995 (diff) | |
soc/intel/baytrail/sata.c: Fix SATA init sequence
SeaBIOS on Bay Trail would time out when trying to access a SATA drive.
Turns out that there's two mistakes in the SATA initialization sequence:
- PCI register 0x94 is wrongly cleared with a bitwise-and operation.
- PCI register 0x9c is instead written to 0x98, clobbering the latter.
After correcting them, SeaBIOS can boot from SATA on Asrock Q1900M.
Change-Id: I5cc4b9b1695653066f47de67afc79f08f0341cc5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44088
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Máté Kukri <kukri.mate@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/baytrail/sata.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/soc/intel/baytrail/sata.c b/src/soc/intel/baytrail/sata.c index 4dc3ea40b1..24c805ac81 100644 --- a/src/soc/intel/baytrail/sata.c +++ b/src/soc/intel/baytrail/sata.c @@ -128,14 +128,12 @@ static void sata_init(struct device *dev) /* Enable clock for ports */ reg32 = pci_read_config32(dev, 0x94); - reg32 |= 0x3f << 24; - pci_write_config32(dev, 0x94, reg32); - reg32 &= (config->sata_port_map ^ 0x3) << 24; + reg32 &= ~(config->sata_port_map << 24); pci_write_config32(dev, 0x94, reg32); /* Lock SataGc register */ reg32 = (0x1 << 31) | (0x7 << 12); - pci_write_config32(dev, 0x98, reg32); + pci_write_config32(dev, 0x9c, reg32); } static void sata_enable(struct device *dev) |