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From 59fece51e2abd69a5cf5829096d4f2b55ad994bf Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Thu, 18 Jun 2015 11:48:02 -0500
Subject: [PATCH 061/143] 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 73f2a38..9b30b00 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 = 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 068eaf4..f705af2 100644
--- a/src/mainboard/asus/kgpe-d16/cmos.layout
+++ b/src/mainboard/asus/kgpe-d16/cmos.layout
@@ -46,9 +46,10 @@ 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
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 d35f84d..b09ae73 100644
--- a/src/southbridge/amd/sb700/sata.c
+++ b/src/southbridge/amd/sb700/sata.c
@@ -108,6 +108,7 @@ 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;
@@ -115,6 +116,10 @@ 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));
@@ -233,6 +238,13 @@ 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);
--
1.7.9.5
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