diff --git a/src/southbridge/intel/common/Makefile.inc b/src/southbridge/intel/common/Makefile.inc index bf3a86e8ff..961b71bbd8 100644 --- a/src/southbridge/intel/common/Makefile.inc +++ b/src/southbridge/intel/common/Makefile.inc @@ -18,6 +18,11 @@ subdirs-y += firmware ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_COMMON),y) +romstage-y += pmbase.c +ramstage-y += pmbase.c +postcar-y += pmbase.c +smm-y += pmbase.c + romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += usb_debug.c ramstage-$(CONFIG_USBDEBUG) += usb_debug.c diff --git a/src/southbridge/intel/common/pmbase.c b/src/southbridge/intel/common/pmbase.c new file mode 100644 index 0000000000..360b63d9e4 --- /dev/null +++ b/src/southbridge/intel/common/pmbase.c @@ -0,0 +1,93 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 Patrick Rudolph + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include + +#include "pmbase.h" + +/* LPC PM Base Address Register */ +#define PMBASE 0x40 +#define PMSIZE 0x80 + +/* PCI Configuration Space (D31:F0): LPC */ +#if defined(__SIMPLE_DEVICE__) +#define PCH_LPC_DEV PCI_DEV(0, 0x1f, 0) +#else +#define PCH_LPC_DEV dev_find_slot(0, PCI_DEVFN(0x1f, 0)) +#endif + +u16 lpc_get_pmbase(void) +{ +#if defined(__SMM__) + /* Don't assume PMBASE is still the same */ + return pci_read_config16(PCH_LPC_DEV, PMBASE) & 0xfffc; +#else + static u16 pmbase CAR_GLOBAL; + + if (pmbase) + return pmbase; + + pmbase = pci_read_config16(PCH_LPC_DEV, PMBASE) & 0xfffc; + + return pmbase; +#endif +} + +void write_pmbase32(const u8 addr, const u32 val) +{ + ASSERT(addr <= (PMSIZE - sizeof(u32))); + + outl(val, lpc_get_pmbase() + addr); +} + +void write_pmbase16(const u8 addr, const u16 val) +{ + ASSERT(addr <= (PMSIZE - sizeof(u16))); + + outw(val, lpc_get_pmbase() + addr); +} + +void write_pmbase8(const u8 addr, const u8 val) +{ + ASSERT(addr <= (PMSIZE - sizeof(u8))); + + outb(val, lpc_get_pmbase() + addr); +} + +u32 read_pmbase32(const u8 addr) +{ + ASSERT(addr <= (PMSIZE - sizeof(u32))); + + return inl(lpc_get_pmbase() + addr); +} + +u16 read_pmbase16(const u8 addr) +{ + ASSERT(addr <= (PMSIZE - sizeof(u16))); + + return inw(lpc_get_pmbase() + addr); +} + +u8 read_pmbase8(const u8 addr) +{ + ASSERT(addr <= (PMSIZE - sizeof(u8))); + + return inb(lpc_get_pmbase() + addr); +} diff --git a/src/southbridge/intel/common/pmbase.h b/src/southbridge/intel/common/pmbase.h new file mode 100644 index 0000000000..fdef8887b1 --- /dev/null +++ b/src/southbridge/intel/common/pmbase.h @@ -0,0 +1,26 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 Patrick Rudolph + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +u16 lpc_get_pmbase(void); + +void write_pmbase32(const u8 addr, const u32 val); +void write_pmbase16(const u8 addr, const u16 val); +void write_pmbase8(const u8 addr, const u8 val); + +u32 read_pmbase32(const u8 addr); +u16 read_pmbase16(const u8 addr); +u8 read_pmbase8(const u8 addr);