Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11993
-gerrit
commit 16600b84b29aa5076368e0b82badaf3cabc32063 Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Thu Jun 18 11:48:02 2015 -0500
southbridge/amd/sb700: Add option to disable SATA ALPM
Change-Id: I88055cbb4df4d7ba811cef7056c0a6ca2612fcb0 Signed-off-by: Timothy Pearson tpearson@raptorengineeringinc.com --- src/mainboard/asus/kgpe-d16/cmos.default | 1 + src/mainboard/asus/kgpe-d16/cmos.layout | 7 ++++--- src/southbridge/amd/sb700/sata.c | 12 ++++++++++++ 3 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/asus/kgpe-d16/cmos.default b/src/mainboard/asus/kgpe-d16/cmos.default index 3473bc9..9994dad 100644 --- a/src/mainboard/asus/kgpe-d16/cmos.default +++ b/src/mainboard/asus/kgpe-d16/cmos.default @@ -18,6 +18,7 @@ interleave_memory_channels = Enable cpu_c_states = Enable cpu_cc6_state = Enable sata_ahci_mode = Enable +sata_alpm = Disable maximum_p_state_limit = 0xf ieee1394_controller = Enable power_on_after_fail = On diff --git a/src/mainboard/asus/kgpe-d16/cmos.layout b/src/mainboard/asus/kgpe-d16/cmos.layout index 0bc6db8..21765e3 100644 --- a/src/mainboard/asus/kgpe-d16/cmos.layout +++ b/src/mainboard/asus/kgpe-d16/cmos.layout @@ -41,9 +41,10 @@ entries 465 1 e 1 cpu_c_states 466 1 e 1 cpu_cc6_state 467 1 e 1 sata_ahci_mode -468 4 h 0 maximum_p_state_limit -472 2 e 13 dimm_spd_checksum -474 1 r 0 allow_spd_nvram_cache_restore +468 1 e 1 sata_alpm +469 4 h 0 maximum_p_state_limit +473 2 e 13 dimm_spd_checksum +475 1 r 0 allow_spd_nvram_cache_restore 477 1 e 1 ieee1394_controller 728 256 h 0 user_data 984 16 h 0 check_sum diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c index fdf32c7..c61fa01 100644 --- a/src/southbridge/amd/sb700/sata.c +++ b/src/southbridge/amd/sb700/sata.c @@ -104,6 +104,7 @@ static void sata_init(struct device *dev) int i, j; uint8_t nvram; uint8_t sata_ahci_mode; + uint8_t sata_alpm_enable; uint8_t port_count; uint8_t max_port_count;
@@ -111,6 +112,10 @@ static void sata_init(struct device *dev) if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS) sata_ahci_mode = !!nvram;
+ sata_alpm_enable = 0; + if (get_option(&nvram, "sata_alpm") == CB_SUCCESS) + sata_alpm_enable = !!nvram; + device_t sm_dev; /* SATA SMBus Disable */ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); @@ -229,6 +234,13 @@ static void sata_init(struct device *dev) dword &= ~(0x1 << i); write32(sata_bar5 + 0x0c, dword);
+ /* Disable ALPM if ALPM support not requested */ + if (!sata_alpm_enable) { + dword = read32(sata_bar5 + 0xfc); + dword &= ~(0x1 << 11); /* Disable ALPM */ + write32(sata_bar5 + 0xfc, dword); + } + /* Write protect Sub-Class Code */ byte = pci_read_config8(dev, 0x40); byte &= ~(1 << 0);
-
Timothy Pearson