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| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2014-04-16 16:33:03 -0500 |
|---|---|---|
| committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2014-12-06 02:47:18 +0100 |
| commit | d2e5f6815e72ca1e52f5f08aa97dfabbd0ecbf67 (patch) | |
| tree | 51396dcef88b727a3aeec7bf957e542aa54cc1b5 /src | |
| parent | 59bff09f301fe3544cc70aafaf666cae40fa3257 (diff) | |
| download | coreboot-d2e5f6815e72ca1e52f5f08aa97dfabbd0ecbf67.tar.xz | |
southbridge/hudson: Disable USB controllers if devicetree says so
Change-Id: I009a01d3324d48d2eeda87d74c8e3e7c27958ee2
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5525
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/southbridge/amd/agesa/hudson/hudson.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/src/southbridge/amd/agesa/hudson/hudson.c b/src/southbridge/amd/agesa/hudson/hudson.c index 3b57221d65..d5f11dcc53 100644 --- a/src/southbridge/amd/agesa/hudson/hudson.c +++ b/src/southbridge/amd/agesa/hudson/hudson.c @@ -82,11 +82,34 @@ 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)); @@ -109,6 +132,29 @@ void hudson_enable(device_t dev) pm_write8(0xd3, reg8); } break; + + /* Make sure to disable other functions if function 0 is disabled */ + case PCI_DEVFN(0x12, 0): + if (dev->enabled == 0) + hudson_disable_usb(USB_EN_DEVFN_12_0); + case PCI_DEVFN(0x12, 2): /* Fall through */ + 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); + case PCI_DEVFN(0x13, 2): /* Fall through */ + 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); + case PCI_DEVFN(0x16, 2): /* Fall through */ + if (dev->enabled == 0) + hudson_disable_usb(USB_EN_DEVFN_16_2); + break; default: break; } |