[coreboot-gerrit] Patch set updated for coreboot: 602d772 southbridge/hudson: Disable USB controllers if devicetree says so
Alexandru Gagniuc (mr.nuke.me@gmail.com)
gerrit at coreboot.org
Thu Apr 17 03:40:14 CEST 2014
Alexandru Gagniuc (mr.nuke.me at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5525
-gerrit
commit 602d7721fcf9f0162987b472f6fae96ff3e9169c
Author: Alexandru Gagniuc <mr.nuke.me at gmail.com>
Date: Wed Apr 16 16:33:03 2014 -0500
southbridge/hudson: Disable USB controllers if devicetree says so
Change-Id: I009a01d3324d48d2eeda87d74c8e3e7c27958ee2
Signed-off-by: Alexandru Gagniuc <mr.nuke.me at gmail.com>
---
src/southbridge/amd/agesa/hudson/hudson.c | 49 ++++++++++++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/src/southbridge/amd/agesa/hudson/hudson.c b/src/southbridge/amd/agesa/hudson/hudson.c
index 8289c7f..97e1257 100644
--- a/src/southbridge/amd/agesa/hudson/hudson.c
+++ b/src/southbridge/amd/agesa/hudson/hudson.c
@@ -91,11 +91,34 @@ u16 pm_read16(u16 reg)
return read16(PM_MMIO_BASE + reg);
}
+#define PM_REG_USB_ENABLE 0xef
+
+enum usb_enable {
+ USB_EN_DEVFN_12_0 = (1 << 0),
+ USB_EN_DEVFN_12_2 = (1 << 1),
+ USB_EN_DEVFN_13_0 = (1 << 2),
+ USB_EN_DEVFN_13_2 = (1 << 3),
+ USB_EN_DEVFN_16_0 = (1 << 4),
+ USB_EN_DEVFN_16_2 = (1 << 5),
+};
+
+static void hudson_disable_usb(u8 disable)
+{
+ u8 reg8;
+
+ /* Bit 7 handles routing, 6 is reserved. we don't mess with those */
+ disable &= 0x3f;
+
+ reg8 = pm_read8(PM_REG_USB_ENABLE);
+ reg8 &= ~disable;
+ pm_write8(PM_REG_USB_ENABLE, reg8);
+}
+
void hudson_enable(device_t dev)
{
printk(BIOS_DEBUG, "hudson_enable()\n");
switch (dev->path.pci.devfn) {
- case (0x14 << 3) | 7: /* 0:14.7 SD */
+ case PCI_DEVFN(0x14, 7):
if (dev->enabled == 0) {
// read the VENDEV ID
device_t sd_dev = dev_find_slot( 0, PCI_DEVFN( 0x14, 7));
@@ -118,6 +141,30 @@ void hudson_enable(device_t dev)
pm_write8(0xd3, reg8);
}
break;
+ case PCI_DEVFN(0x12, 0):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_12_0);
+ break;
+ case PCI_DEVFN(0x12, 2):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_12_2);
+ break;
+ case PCI_DEVFN(0x13, 0):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_13_0);
+ break;
+ case PCI_DEVFN(0x13, 2):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_13_2);
+ break;
+ case PCI_DEVFN(0x16, 0):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_16_0);
+ break;
+ case PCI_DEVFN(0x16, 2):
+ if (dev->enabled == 0)
+ hudson_disable_usb(USB_EN_DEVFN_16_2);
+ break;
default:
break;
}
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