broadwell: Changes from 2.2.0 ref code
- The SATA CAP register setup was moved outside the refcode blob we run
so it needs to be set up by coreboot again...
- Slight tweak to fast ramp voltage for broadwell CPU
BUG=chrome-os-partner:25491
BRANCH=None
TEST=Build and boot on samus
Original-Change-Id: I7bdc0811ad8f28ab0912972036dca59d229b0173
Original-CSigned-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-CReviewed-on: https://chromium-review.googlesource.com/214024
Original-CReviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 5d166a0c4d206eaa885ecebaa0c3cefefdc59280)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: Id58d3bee5e713139edf6e8fda8cdf4c48ba95bd1
Reviewed-on: http://review.coreboot.org/8964
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/soc/intel/broadwell/sata.c b/src/soc/intel/broadwell/sata.c
index e9e0810..0e25161 100644
--- a/src/soc/intel/broadwell/sata.c
+++ b/src/soc/intel/broadwell/sata.c
@@ -92,6 +92,13 @@
abar = (u8 *)(pci_read_config32(dev, PCI_BASE_ADDRESS_5));
printk(BIOS_DEBUG, "ABAR: %p\n", abar);
+ /* CAP (HBA Capabilities) : enable power management */
+ reg32 = read32(abar + 0x00);
+ reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */
+ reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */
+ reg32 |= (1 << 18); /* SAM: SATA AHCI MODE ONLY */
+ write32(abar + 0x00, reg32);
+
/* PI (Ports implemented) */
write32(abar + 0x0c, config->sata_port_map);
(void) read32(abar + 0x0c); /* Read back 1 */