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soc/intel/dnv: Don't clobber SATA_MAP while trying to set mode 

SATA Mode Select is bit 16 of the SATA General Configuration
register.  This code currently incorrectly pokes at the Port Clock
Disable bits in the Port Mapping Register, and without clock the
affected ports can't link.

Change-Id: I37104f520a869bd45a32cfd271d0b893aec3c8ed
Signed-off-by: Stephen Douthit <stephend@silicom-usa.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34663
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Vanessa Eusebio <vanessa.f.eusebio@intel.com>
Reviewed-by: David Guckian
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Stephen Douthit 2019-08-02 17:05:03 -04:00 committed by Patrick Georgi
parent 54e9894353
commit 2c18ba5bd7
2 changed files with 6 additions and 9 deletions
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7
src/soc/intel/denverton_ns/include/soc/sata.h
View File

@ -23,9 +23,8 @@
#define PCH_SATA0_DEV PCI_DEV(0, SATA_DEV, SATA_FUNC)
#define PCH_SATA1_DEV PCI_DEV(0, SATA2_DEV, SATA2_FUNC)
#define SATA_MAP 0x90
#define SATA_MAP_AHCI (0 << 6)
#define SATA_MAP_RAID (1 << 6)
#define SATA_PSC 0x92
#define SATAGC 0x9c
#define SATAGC_AHCI (0 << 16)
#define SATAGC_RAID (1 << 16)
#endif //_DENVERTON_NS_SATA_H

8
src/soc/intel/denverton_ns/sata.c
View File

@ -31,7 +31,6 @@
static void sata_init(struct device *dev)
{
u32 reg32;
u16 reg16;
u32 abar;
printk(BIOS_DEBUG, "SATA: Initializing...\n");
@ -46,10 +45,9 @@ static void sata_init(struct device *dev)
printk(BIOS_DEBUG, "SATA: Controller in AHCI mode.\n");
/* Set the controller mode */
reg16 = pci_read_config16(dev, SATA_MAP);
reg16 &= ~(3 << 6);
reg16 |= SATA_MAP_AHCI;
pci_write_config16(dev, SATA_MAP, reg16);
reg32 = pci_read_config32(dev, SATAGC);
reg32 &= ~SATAGC_AHCI;
pci_write_config32(dev, SATAGC, reg32);
/* Initialize AHCI memory-mapped space */
abar = pci_read_config32(dev, PCI_BASE_ADDRESS_5);