From 234e87f137faff67c391c4df678a82b763089119 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Thu, 10 Apr 2008 22:50:44 +0000 Subject: libpayload: Support functions for Geode The Geode video driver will require a number of support functions, including udelay(), PCI bus walking and MSRs. This adds those functions in preparation for the actual code. Signed-off-by: Jordan Crouse Acked-by: Uwe Hermann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3231 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- payloads/libpayload/include/arch/msr.h | 58 ++++++++++++++++++++++++++++++ payloads/libpayload/include/libpayload.h | 1 + payloads/libpayload/include/pci.h | 61 ++++++++++++++++++++++++++++++++ 3 files changed, 120 insertions(+) create mode 100644 payloads/libpayload/include/arch/msr.h create mode 100644 payloads/libpayload/include/pci.h (limited to 'payloads/libpayload/include') diff --git a/payloads/libpayload/include/arch/msr.h b/payloads/libpayload/include/arch/msr.h new file mode 100644 index 0000000000..5985ab81d8 --- /dev/null +++ b/payloads/libpayload/include/arch/msr.h @@ -0,0 +1,58 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _ARCH_MSR_H_ +#define _ARCH_MSR_H_ + +static inline unsigned long long _rdmsr(unsigned int msr) +{ + unsigned long long val; + asm volatile("rdmsr" : "=A" (val) : "c" (msr)); + return val; +} + +static inline void _wrmsr(unsigned int msr, unsigned long long val) +{ + asm volatile("wrmsr" : : "c" (msr), "A"(val)); +} + +#define rdmsr(_m, _l, _h) \ + do { \ + unsigned long long _v = _rdmsr((_m)); \ + (_l) = (unsigned int) _v; \ + (_h) = (unsigned int) ((_v >> 32) & 0xFFFFFFFF); \ + } while(0) + +static inline void wrmsr(unsigned int msr, unsigned int lo, unsigned int hi) +{ + unsigned long long val = (((unsigned long long) hi) << 32) | lo; + _wrmsr(msr, val); +} + +#endif diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h index 23feedb43f..32deabf2b3 100644 --- a/payloads/libpayload/include/libpayload.h +++ b/payloads/libpayload/include/libpayload.h @@ -170,6 +170,7 @@ void lib_get_sysinfo(void); /* Timer functions - defined by each architecture. */ unsigned int get_cpu_speed(void); void ndelay(unsigned int n); +void udelay(unsigned int n); void mdelay(unsigned int n); void delay(unsigned int n); diff --git a/payloads/libpayload/include/pci.h b/payloads/libpayload/include/pci.h new file mode 100644 index 0000000000..32ad3fb96d --- /dev/null +++ b/payloads/libpayload/include/pci.h @@ -0,0 +1,61 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _PCI_H_ +#define _PCI_H_ + +typedef unsigned short pcidev_t; + +#define REG_VENDOR_ID 0x00 +#define REG_DEVICE_ID 0x04 +#define REG_HEADER_TYPE 0x0E +#define REG_PRIMARY_BUS 0x18 + +#define HEADER_TYPE_NORMAL 0 +#define HEADER_TYPE_BRIDGE 1 +#define HEADER_TYPE_CARDBUS 2 + +#define PCIDEV(_b, _d) ((((_b) & 0xFF) << 8) | ((_d) & 0xFF)) + +#define PCIDEV_BUS(_d) (((_d) >> 8) & 0xFF) +#define PCIDEV_DEVFN(_d) ((_d) & 0xFF) + +#define PCI_ADDR(_bus, _dev, _reg) \ +(0x80000000 | (_bus << 16) | (_dev << 8) | (_reg & ~3)) + +void pci_read_dword(unsigned int bus, unsigned int devfn, + unsigned int reg, unsigned int *val); + +void pci_read_byte(unsigned int bus, unsigned int devfn, + unsigned int reg, unsigned char *val); + +int pci_find_device(unsigned short vid, unsigned short did, pcidev_t *dev); +unsigned int pci_read_resource(pcidev_t dev, int bar); + +#endif -- cgit v1.2.3