From 6a7aeb3b35bc119286c83355af67812b4871467e Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko Date: Sun, 5 Jan 2014 11:37:32 +0100 Subject: 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 Reviewed-on: http://review.coreboot.org/4622 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Paul Menzel --- src/southbridge/intel/bd82x6x/Kconfig | 4 +++ src/southbridge/intel/bd82x6x/smihandler.c | 54 +++++++++++++++++++----------- 2 files changed, 39 insertions(+), 19 deletions(-) (limited to 'src/southbridge/intel/bd82x6x') diff --git a/src/southbridge/intel/bd82x6x/Kconfig b/src/southbridge/intel/bd82x6x/Kconfig index c2720ef4c7..d060dae406 100644 --- a/src/southbridge/intel/bd82x6x/Kconfig +++ b/src/southbridge/intel/bd82x6x/Kconfig @@ -45,6 +45,10 @@ config EHCI_DEBUG_OFFSET hex default 0xa0 +config DRAM_RESET_GATE_GPIO + int + default 60 + config BOOTBLOCK_SOUTHBRIDGE_INIT string default "southbridge/intel/bd82x6x/bootblock.c" diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c index 99f6b51319..f886ad4432 100644 --- a/src/southbridge/intel/bd82x6x/smihandler.c +++ b/src/southbridge/intel/bd82x6x/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) -- cgit v1.2.3