## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
## SUCH DAMAGE.
##
+TARGETS-y += drivers/pci.o
TARGETS-$(CONFIG_SERIAL_CONSOLE) += drivers/serial.o
TARGETS-$(CONFIG_PC_KEYBOARD) += drivers/keyboard.o
--- /dev/null
+/*
+ * 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.
+ */
+
+#include <libpayload.h>
+#include <pci.h>
+
+static int find_on_bus(int bus, unsigned short vid, unsigned short did,
+ pcidev_t * dev)
+{
+ int devfn;
+ unsigned int val;
+ unsigned char hdr;
+
+ for (devfn = 0; devfn < 0x100; devfn++) {
+ pci_read_dword(bus, devfn, REG_VENDOR_ID, &val);
+
+ if (val == 0xffffffff || val == 0x00000000 ||
+ val == 0x0000ffff || val == 0xffff0000)
+ continue;
+
+ if (val == ((did << 16) | vid)) {
+ *dev = PCIDEV(bus, devfn);
+ return 1;
+ }
+
+ pci_read_byte(bus, devfn, REG_HEADER_TYPE, &hdr);
+
+ hdr &= 0x7F;
+
+ if (hdr == HEADER_TYPE_BRIDGE || hdr == HEADER_TYPE_CARDBUS) {
+ unsigned int busses;
+ pci_read_dword(bus, devfn, REG_PRIMARY_BUS, &busses);
+ if (find_on_bus((busses >> 8) & 0xFF, vid, did, dev))
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void pci_read_dword(unsigned int bus, unsigned int devfn,
+ unsigned int reg, unsigned int *val)
+{
+ outl(PCI_ADDR(bus, devfn, reg), 0xCF8);
+ *val = inl(0xCFC);
+}
+
+void pci_read_byte(unsigned int bus, unsigned int devfn,
+ unsigned int reg, unsigned char *val)
+{
+ outl(PCI_ADDR(bus, devfn, reg), 0xCF8);
+ *val = inb(0xCFC + (reg & 3));
+}
+
+int pci_find_device(unsigned short vid, unsigned short did, pcidev_t * dev)
+{
+ return find_on_bus(0, vid, did, dev);
+}
+
+unsigned int pci_read_resource(pcidev_t dev, int bar)
+{
+ unsigned int val;
+ pci_read_dword(PCIDEV_BUS(dev), PCIDEV_DEVFN(dev), 0x10 + (bar * 4),
+ &val);
+ return val;
+}
_delay(n * cpu_khz / 1000000);
}
+void udelay(unsigned int n)
+{
+ _delay(n * cpu_khz / 1000);
+}
+
void mdelay(unsigned int m)
{
_delay(m * cpu_khz);
--- /dev/null
+/*
+ * 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
/* 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);
--- /dev/null
+/*
+ * 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
projects / coreboot.git / commitdiff