diff options
| author | Vladimir Serbinenko <phcoder@gmail.com> | 2014-01-05 11:37:32 +0100 |
|---|---|---|
| committer | Vladimir Serbinenko <phcoder@gmail.com> | 2014-01-09 17:16:12 +0100 |
| commit | 6a7aeb3b35bc119286c83355af67812b4871467e (patch) | |
| tree | 5b5dde99146a7e60843947e1cda948f454c5eeb7 /src/southbridge/intel/ibexpeak/smihandler.c | |
| parent | ffd4a610ba5d1ec00d166f221485e99ffe12d909 (diff) | |
| download | coreboot-6a7aeb3b35bc119286c83355af67812b4871467e.tar.xz | |
bd82x6x/ibexpeak: Make DRAM reset gate GPIO configurable
DRAM reset gate GPIO is different on different mobos move it to hidden config
with 60 (current value) as default.
Set it to 10 for Lenovo X201.
Change-Id: I4f3b6876d7c33d4966315091b63a76a9a0064c16
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4622
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/southbridge/intel/ibexpeak/smihandler.c')
| -rw-r--r-- | src/southbridge/intel/ibexpeak/smihandler.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/src/southbridge/intel/ibexpeak/smihandler.c b/src/southbridge/intel/ibexpeak/smihandler.c index 5ee8ef9538..bc4ca22c59 100644 --- a/src/southbridge/intel/ibexpeak/smihandler.c +++ b/src/southbridge/intel/ibexpeak/smihandler.c @@ -290,6 +290,31 @@ static void busmaster_disable_on_bus(int bus) } } +static void southbridge_gate_memory_reset_real(int offset, + u16 use, u16 io, u16 lvl) +{ + u32 reg32; + + /* Make sure it is set as GPIO */ + reg32 = inl(use); + if (!(reg32 & (1 << offset))) { + reg32 |= (1 << offset); + outl(reg32, use); + } + + /* Make sure it is set as output */ + reg32 = inl(io); + if (reg32 & (1 << offset)) { + reg32 &= ~(1 << offset); + outl(reg32, io); + } + + /* Drive the output low */ + reg32 = inl(lvl); + reg32 &= ~(1 << offset); + outl(reg32, lvl); +} + /* * Drive GPIO 60 low to gate memory reset in S3. * @@ -298,31 +323,22 @@ static void busmaster_disable_on_bus(int bus) */ static void southbridge_gate_memory_reset(void) { - u32 reg32; u16 gpiobase; gpiobase = pci_read_config16(PCI_DEV(0, 0x1f, 0), GPIOBASE) & 0xfffc; if (!gpiobase) return; - /* Make sure it is set as GPIO */ - reg32 = inl(gpiobase + GPIO_USE_SEL2); - if (!(reg32 & (1 << 28))) { - reg32 |= (1 << 28); - outl(reg32, gpiobase + GPIO_USE_SEL2); - } - - /* Make sure it is set as output */ - reg32 = inl(gpiobase + GP_IO_SEL2); - if (reg32 & (1 << 28)) { - reg32 &= ~(1 << 28); - outl(reg32, gpiobase + GP_IO_SEL2); - } - - /* Drive the output low */ - reg32 = inl(gpiobase + GP_LVL2); - reg32 &= ~(1 << 28); - outl(reg32, gpiobase + GP_LVL2); + if (CONFIG_DRAM_RESET_GATE_GPIO >= 32) + southbridge_gate_memory_reset_real(CONFIG_DRAM_RESET_GATE_GPIO - 32, + gpiobase + GPIO_USE_SEL2, + gpiobase + GP_IO_SEL2, + gpiobase + GP_LVL2); + else + southbridge_gate_memory_reset_real(CONFIG_DRAM_RESET_GATE_GPIO, + gpiobase + GPIO_USE_SEL, + gpiobase + GP_IO_SEL, + gpiobase + GP_LVL); } static void xhci_sleep(u8 slp_typ) |