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flashrom/hwaccess.h
Carl-Daniel Hailfinger cceafa2ad0 Handle the following architectures in generic flashrom code 
- x86/x86_64 (little endian)
- PowerPC (big endian)
- MIPS (big+little endian)

No changes to programmer specific code. This means any drivers with MMIO
access will _not_ suddenly start working on big endian systems, but with
this patch everything is in place to fix them.

Compilation should work on all architectures listed above for all
drivers except nic3com and nicrealtek which require PCI Port IO which is
x86-only for now.

To compile without nic3com and nicrealtek, run
make distclean
make CONFIG_NIC3COM=no CONFIG_NICREALTEK=no

Thanks to Misha Manulis for testing early versions of this patch on
PowerPC (big endian) with the satasii programmer.
Thanks to Segher Boessenkool for design review and for helping out with
compiler tricks and pointing out that we need eieio on PowerPC.
Thanks to Vladimir Serbinenko for compile testing on MIPS (little
endian) and PowerPC (big endian) and for runtime testing on MIPS (little
endian).
Thanks to David Daney for compile testing on MIPS (big endian).
Thanks to Uwe Hermann for compile and runtime testing on x86_64.

DO NOT RUN flashrom ON NON-X86 AFTER APPLYING THIS PATCH!
This patch only provides the infrastructure, but does not convert any
drivers, so flashrom will compile, but it won't do the right thing on
non-x86 platforms.

Corresponding to flashrom svn r1013.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Misha Manulis <misha@manulis.com>
Acked-by: Vladimir 'phcoder/φ-coder' Serbinenko <phcoder@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
2010-05-26 01:45:41 +00:00

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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009 Carl-Daniel Hailfinger
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Header file for hardware access and OS abstraction. Included from flash.h.
*/
#ifndef __HWACCESS_H__
#define __HWACCESS_H__ 1
#if defined (__i386__) || defined (__x86_64__)
#if defined(__GLIBC__)
#include <sys/io.h>
#endif
#endif
#if NEED_PCI == 1
#include <pci/pci.h>
#endif
#if defined (__i386__) || defined (__x86_64__)
/* All x86 is little-endian. */
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)
/* MIPS can be either endian. */
#if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL)
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB)
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
/* PowerPC can be either endian. */
#if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__)
#define __FLASHROM_BIG_ENDIAN__ 1
/* Error checking in case some weird header has #defines for LE as well. */
#if defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__)
#error Conflicting endianness #define
#endif
#else
#error Little-endian PowerPC #defines are unknown
#endif
#endif
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
/* Nonstandard libc-specific macros for determining endianness. */
#if defined(__GLIBC__)
#include <endian.h>
#if BYTE_ORDER == LITTLE_ENDIAN
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif BYTE_ORDER == BIG_ENDIAN
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#endif
#endif
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
#error Unable to determine endianness. Please add support for your arch or libc.
#endif
#define ___constant_swab8(x) ((uint8_t) ( \
(((uint8_t)(x) & (uint8_t)0xffU))))
#define ___constant_swab16(x) ((uint16_t) ( \
(((uint16_t)(x) & (uint16_t)0x00ffU) << 8) | \
(((uint16_t)(x) & (uint16_t)0xff00U) >> 8)))
#define ___constant_swab32(x) ((uint32_t) ( \
(((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24)))
#define ___constant_swab64(x) ((uint64_t) ( \
(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \
(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))
#if defined (__FLASHROM_BIG_ENDIAN__)
#define cpu_to_le(bits) \
static inline uint##bits##_t cpu_to_le##bits(uint##bits##_t val) \
{ \
return ___constant_swab##bits(val); \
}
cpu_to_le(8)
cpu_to_le(16)
cpu_to_le(32)
cpu_to_le(64)
#define cpu_to_be8
#define cpu_to_be16
#define cpu_to_be32
#define cpu_to_be64
#elif defined (__FLASHROM_LITTLE_ENDIAN__)
#define cpu_to_be(bits) \
static inline uint##bits##_t cpu_to_be##bits(uint##bits##_t val) \
{ \
return ___constant_swab##bits(val); \
}
cpu_to_be(8)
cpu_to_be(16)
cpu_to_be(32)
cpu_to_be(64)
#define cpu_to_le8
#define cpu_to_le16
#define cpu_to_le32
#define cpu_to_le64
#else
#error Could not determine endianness.
#endif
#define be_to_cpu8 cpu_to_be8
#define be_to_cpu16 cpu_to_be16
#define be_to_cpu32 cpu_to_be32
#define be_to_cpu64 cpu_to_be64
#define le_to_cpu8 cpu_to_le8
#define le_to_cpu16 cpu_to_le16
#define le_to_cpu32 cpu_to_le32
#define le_to_cpu64 cpu_to_le64
#if defined (__i386__) || defined (__x86_64__)
#define __FLASHROM_HAVE_OUTB__ 1
/* for iopl and outb under Solaris */
#if defined (__sun) && (defined(__i386) || defined(__amd64))
#include <strings.h>
#include <sys/sysi86.h>
#include <sys/psw.h>
#include <asm/sunddi.h>
#endif
#if (defined(__MACH__) && defined(__APPLE__))
#define __DARWIN__
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
#include <machine/cpufunc.h>
#define off64_t off_t
#define lseek64 lseek
#define OUTB(x, y) do { u_int outb_tmp = (y); outb(outb_tmp, (x)); } while (0)
#define OUTW(x, y) do { u_int outw_tmp = (y); outw(outw_tmp, (x)); } while (0)
#define OUTL(x, y) do { u_int outl_tmp = (y); outl(outl_tmp, (x)); } while (0)
#define INB(x) __extension__ ({ u_int inb_tmp = (x); inb(inb_tmp); })
#define INW(x) __extension__ ({ u_int inw_tmp = (x); inw(inw_tmp); })
#define INL(x) __extension__ ({ u_int inl_tmp = (x); inl(inl_tmp); })
#else
#if defined(__DARWIN__)
#include <DirectIO/darwinio.h>
#define off64_t off_t
#define lseek64 lseek
#endif
#if defined (__sun) && (defined(__i386) || defined(__amd64))
/* Note different order for outb */
#define OUTB(x,y) outb(y, x)
#define OUTW(x,y) outw(y, x)
#define OUTL(x,y) outl(y, x)
#define INB inb
#define INW inw
#define INL inl
#else
#ifdef __DJGPP__
#include <pc.h>
#define OUTB(x,y) outportb(y, x)
#define OUTW(x,y) outportw(y, x)
#define OUTL(x,y) outportl(y, x)
#define INB inportb
#define INW inportw
#define INL inportl
#else
#define OUTB outb
#define OUTW outw
#define OUTL outl
#define INB inb
#define INW inw
#define INL inl
#endif
#endif
#endif
#if defined(__NetBSD__)
#define off64_t off_t
#define lseek64 lseek
#if defined(__i386__) || defined(__x86_64__)
#include <sys/types.h>
#include <machine/sysarch.h>
#if defined(__i386__)
#define iopl i386_iopl
#elif defined(__x86_64__)
#define iopl x86_64_iopl
#endif
#include <stdint.h>
static inline void outb(uint8_t value, uint16_t port)
{
asm volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));
}
static inline uint8_t inb(uint16_t port)
{
uint8_t value;
asm volatile ("inb %w1,%0":"=a" (value):"Nd" (port));
return value;
}
static inline void outw(uint16_t value, uint16_t port)
{
asm volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
}
static inline uint16_t inw(uint16_t port)
{
uint16_t value;
asm volatile ("inw %w1,%0":"=a" (value):"Nd" (port));
return value;
}
static inline void outl(uint32_t value, uint16_t port)
{
asm volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
}
static inline uint32_t inl(uint16_t port)
{
uint32_t value;
asm volatile ("inl %1,%0":"=a" (value):"Nd" (port));
return value;
}
#endif
#endif
#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__)
typedef struct { uint32_t hi, lo; } msr_t;
msr_t rdmsr(int addr);
int wrmsr(int addr, msr_t msr);
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */
#undef rdmsr
#undef wrmsr
#define rdmsr freebsd_rdmsr
#define wrmsr freebsd_wrmsr
typedef struct { uint32_t hi, lo; } msr_t;
msr_t freebsd_rdmsr(int addr);
int freebsd_wrmsr(int addr, msr_t msr);
#endif
#elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
/* PCI port I/O is not yet implemented on PowerPC. */
#elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)
/* PCI port I/O is not yet implemented on MIPS. */
#else
#error Unknown architecture, please check if it supports PCI port IO.
#endif
#endif /* !__HWACCESS_H__ */
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