diff options
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) |