| 1 | /*␊ |
| 2 | * This file is part of the flashrom project.␊ |
| 3 | *␊ |
| 4 | * Copyright (C) 2009 Carl-Daniel Hailfinger␊ |
| 5 | *␊ |
| 6 | * This program is free software; you can redistribute it and/or modify␊ |
| 7 | * it under the terms of the GNU General Public License as published by␊ |
| 8 | * the Free Software Foundation; version 2 of the License.␊ |
| 9 | *␊ |
| 10 | * This program is distributed in the hope that it will be useful,␊ |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of␊ |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the␊ |
| 13 | * GNU General Public License for more details.␊ |
| 14 | *␊ |
| 15 | * You should have received a copy of the GNU General Public License␊ |
| 16 | * along with this program; if not, write to the Free Software␊ |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA␊ |
| 18 | */␊ |
| 19 | ␊ |
| 20 | /*␊ |
| 21 | * Header file for hardware access and OS abstraction. Included from flash.h.␊ |
| 22 | */␊ |
| 23 | ␊ |
| 24 | #ifndef __HWACCESS_H__␊ |
| 25 | #define __HWACCESS_H__ 1␊ |
| 26 | ␊ |
| 27 | #if defined (__i386__) || defined (__x86_64__)␊ |
| 28 | #if defined(__GLIBC__)␊ |
| 29 | #include <sys/io.h>␊ |
| 30 | #endif␊ |
| 31 | #endif␊ |
| 32 | ␊ |
| 33 | #if NEED_PCI == 1␊ |
| 34 | /*␊ |
| 35 | * libpci headers use the variable name "index" which triggers shadowing␊ |
| 36 | * warnings on systems which have the index() function in a default #include␊ |
| 37 | * or as builtin.␊ |
| 38 | */␊ |
| 39 | #define index shadow_workaround_index␊ |
| 40 | #include <pci/pci.h>␊ |
| 41 | #undef index␊ |
| 42 | #endif␊ |
| 43 | ␊ |
| 44 | #if defined (__i386__) || defined (__x86_64__)␊ |
| 45 | ␊ |
| 46 | /* All x86 is little-endian. */␊ |
| 47 | #define __FLASHROM_LITTLE_ENDIAN__ 1␊ |
| 48 | ␊ |
| 49 | #elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)␊ |
| 50 | ␊ |
| 51 | /* MIPS can be either endian. */␊ |
| 52 | #if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL)␊ |
| 53 | #define __FLASHROM_LITTLE_ENDIAN__ 1␊ |
| 54 | #elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB)␊ |
| 55 | #define __FLASHROM_BIG_ENDIAN__ 1␊ |
| 56 | #endif␊ |
| 57 | ␊ |
| 58 | #elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)␊ |
| 59 | ␊ |
| 60 | /* PowerPC can be either endian. */␊ |
| 61 | #if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__)␊ |
| 62 | #define __FLASHROM_BIG_ENDIAN__ 1␊ |
| 63 | /* Error checking in case some weird header has #defines for LE as well. */␊ |
| 64 | #if defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__)␊ |
| 65 | #error Conflicting endianness #define␊ |
| 66 | #endif␊ |
| 67 | #else␊ |
| 68 | #error Little-endian PowerPC #defines are unknown␊ |
| 69 | #endif␊ |
| 70 | ␊ |
| 71 | #endif␊ |
| 72 | ␊ |
| 73 | #if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)␊ |
| 74 | /* Nonstandard libc-specific macros for determining endianness. */␊ |
| 75 | #if defined(__GLIBC__)␊ |
| 76 | #include <endian.h>␊ |
| 77 | #if BYTE_ORDER == LITTLE_ENDIAN␊ |
| 78 | #define __FLASHROM_LITTLE_ENDIAN__ 1␊ |
| 79 | #elif BYTE_ORDER == BIG_ENDIAN␊ |
| 80 | #define __FLASHROM_BIG_ENDIAN__ 1␊ |
| 81 | #endif␊ |
| 82 | #endif␊ |
| 83 | #endif␊ |
| 84 | ␊ |
| 85 | #if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)␊ |
| 86 | #error Unable to determine endianness. Please add support for your arch or libc.␊ |
| 87 | #endif␊ |
| 88 | ␊ |
| 89 | #define ___constant_swab8(x) ((uint8_t) (␉␉␉␉\␊ |
| 90 | ␉(((uint8_t)(x) & (uint8_t)0xffU))))␊ |
| 91 | ␊ |
| 92 | #define ___constant_swab16(x) ((uint16_t) (␉␉␉␉\␊ |
| 93 | ␉(((uint16_t)(x) & (uint16_t)0x00ffU) << 8) |␉␉␉\␊ |
| 94 | ␉(((uint16_t)(x) & (uint16_t)0xff00U) >> 8)))␊ |
| 95 | ␊ |
| 96 | #define ___constant_swab32(x) ((uint32_t) (␉␉␉␉\␊ |
| 97 | ␉(((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) |␉␉\␊ |
| 98 | ␉(((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) |␉␉\␊ |
| 99 | ␉(((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) |␉␉\␊ |
| 100 | ␉(((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24)))␊ |
| 101 | ␊ |
| 102 | #define ___constant_swab64(x) ((uint64_t) (␉␉␉␉\␊ |
| 103 | ␉(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) |␉\␊ |
| 104 | ␉(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) |␉\␊ |
| 105 | ␉(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) |␉\␊ |
| 106 | ␉(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) |␉\␊ |
| 107 | ␉(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) |␉\␊ |
| 108 | ␉(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) |␉\␊ |
| 109 | ␉(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) |␉\␊ |
| 110 | ␉(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))␊ |
| 111 | ␊ |
| 112 | #if defined (__FLASHROM_BIG_ENDIAN__)␊ |
| 113 | ␊ |
| 114 | #define cpu_to_le(bits)␉␉␉␉␉␉␉\␊ |
| 115 | static inline uint##bits##_t cpu_to_le##bits(uint##bits##_t val)␉\␊ |
| 116 | {␉␉␉␉␉␉␉␉␉\␊ |
| 117 | ␉return ___constant_swab##bits(val);␉␉␉␉\␊ |
| 118 | }␊ |
| 119 | ␊ |
| 120 | cpu_to_le(8)␊ |
| 121 | cpu_to_le(16)␊ |
| 122 | cpu_to_le(32)␊ |
| 123 | cpu_to_le(64)␊ |
| 124 | ␊ |
| 125 | #define cpu_to_be8␊ |
| 126 | #define cpu_to_be16␊ |
| 127 | #define cpu_to_be32␊ |
| 128 | #define cpu_to_be64␊ |
| 129 | ␊ |
| 130 | #elif defined (__FLASHROM_LITTLE_ENDIAN__)␊ |
| 131 | ␊ |
| 132 | #define cpu_to_be(bits)␉␉␉␉␉␉␉\␊ |
| 133 | static inline uint##bits##_t cpu_to_be##bits(uint##bits##_t val)␉\␊ |
| 134 | {␉␉␉␉␉␉␉␉␉\␊ |
| 135 | ␉return ___constant_swab##bits(val);␉␉␉␉\␊ |
| 136 | }␊ |
| 137 | ␊ |
| 138 | cpu_to_be(8)␊ |
| 139 | cpu_to_be(16)␊ |
| 140 | cpu_to_be(32)␊ |
| 141 | cpu_to_be(64)␊ |
| 142 | ␊ |
| 143 | #define cpu_to_le8␊ |
| 144 | #define cpu_to_le16␊ |
| 145 | #define cpu_to_le32␊ |
| 146 | #define cpu_to_le64␊ |
| 147 | ␊ |
| 148 | #else␊ |
| 149 | ␊ |
| 150 | #error Could not determine endianness.␊ |
| 151 | ␊ |
| 152 | #endif␊ |
| 153 | ␊ |
| 154 | #define be_to_cpu8 cpu_to_be8␊ |
| 155 | #define be_to_cpu16 cpu_to_be16␊ |
| 156 | #define be_to_cpu32 cpu_to_be32␊ |
| 157 | #define be_to_cpu64 cpu_to_be64␊ |
| 158 | #define le_to_cpu8 cpu_to_le8␊ |
| 159 | #define le_to_cpu16 cpu_to_le16␊ |
| 160 | #define le_to_cpu32 cpu_to_le32␊ |
| 161 | #define le_to_cpu64 cpu_to_le64␊ |
| 162 | ␊ |
| 163 | #if NEED_PCI == 1␊ |
| 164 | #if defined (__i386__) || defined (__x86_64__)␊ |
| 165 | ␊ |
| 166 | #define __FLASHROM_HAVE_OUTB__ 1␊ |
| 167 | ␊ |
| 168 | /* for iopl and outb under Solaris */␊ |
| 169 | #if defined (__sun) && (defined(__i386) || defined(__amd64))␊ |
| 170 | #include <strings.h>␊ |
| 171 | #include <sys/sysi86.h>␊ |
| 172 | #include <sys/psw.h>␊ |
| 173 | #include <asm/sunddi.h>␊ |
| 174 | #endif␊ |
| 175 | ␊ |
| 176 | #if (defined(__MACH__) && defined(__APPLE__))␊ |
| 177 | #define __DARWIN__␊ |
| 178 | #endif␊ |
| 179 | ␊ |
| 180 | /* Clarification about OUTB/OUTW/OUTL argument order:␊ |
| 181 | * OUT[BWL](val, port)␊ |
| 182 | */␊ |
| 183 | ␊ |
| 184 | #if defined(__FreeBSD__) || defined(__DragonFly__)␊ |
| 185 | #include <machine/cpufunc.h>␊ |
| 186 | #define off64_t off_t␊ |
| 187 | #define lseek64 lseek␊ |
| 188 | #define OUTB(x, y) do { u_int outb_tmp = (y); outb(outb_tmp, (x)); } while (0)␊ |
| 189 | #define OUTW(x, y) do { u_int outw_tmp = (y); outw(outw_tmp, (x)); } while (0)␊ |
| 190 | #define OUTL(x, y) do { u_int outl_tmp = (y); outl(outl_tmp, (x)); } while (0)␊ |
| 191 | #define INB(x) __extension__ ({ u_int inb_tmp = (x); inb(inb_tmp); })␊ |
| 192 | #define INW(x) __extension__ ({ u_int inw_tmp = (x); inw(inw_tmp); })␊ |
| 193 | #define INL(x) __extension__ ({ u_int inl_tmp = (x); inl(inl_tmp); })␊ |
| 194 | #else␊ |
| 195 | #if defined(__DARWIN__)␊ |
| 196 | /* Header is part of the DirectHW library. */␊ |
| 197 | #include <DirectHW/DirectHW.h>␊ |
| 198 | #define off64_t off_t␊ |
| 199 | #define lseek64 lseek␊ |
| 200 | #endif␊ |
| 201 | #if defined (__sun) && (defined(__i386) || defined(__amd64))␊ |
| 202 | /* Note different order for outb */␊ |
| 203 | #define OUTB(x,y) outb(y, x)␊ |
| 204 | #define OUTW(x,y) outw(y, x)␊ |
| 205 | #define OUTL(x,y) outl(y, x)␊ |
| 206 | #define INB inb␊ |
| 207 | #define INW inw␊ |
| 208 | #define INL inl␊ |
| 209 | #else␊ |
| 210 | ␊ |
| 211 | #ifdef __DJGPP__␊ |
| 212 | ␊ |
| 213 | #include <pc.h>␊ |
| 214 | ␊ |
| 215 | #define OUTB(x,y) outportb(y, x)␊ |
| 216 | #define OUTW(x,y) outportw(y, x)␊ |
| 217 | #define OUTL(x,y) outportl(y, x)␊ |
| 218 | ␊ |
| 219 | #define INB inportb␊ |
| 220 | #define INW inportw␊ |
| 221 | #define INL inportl␊ |
| 222 | ␊ |
| 223 | #else␊ |
| 224 | ␊ |
| 225 | #define OUTB outb␊ |
| 226 | #define OUTW outw␊ |
| 227 | #define OUTL outl␊ |
| 228 | #define INB inb␊ |
| 229 | #define INW inw␊ |
| 230 | #define INL inl␊ |
| 231 | ␊ |
| 232 | #endif␊ |
| 233 | ␊ |
| 234 | #endif␊ |
| 235 | #endif␊ |
| 236 | ␊ |
| 237 | #if defined(__NetBSD__) || defined (__OpenBSD__)␊ |
| 238 | #define off64_t off_t␊ |
| 239 | #define lseek64 lseek␊ |
| 240 | #if defined(__i386__) || defined(__x86_64__)␊ |
| 241 | #include <sys/types.h>␊ |
| 242 | #include <machine/sysarch.h>␊ |
| 243 | #if defined(__NetBSD__)␊ |
| 244 | #if defined(__i386__)␊ |
| 245 | #define iopl i386_iopl␊ |
| 246 | #elif defined(__x86_64__)␊ |
| 247 | #define iopl x86_64_iopl␊ |
| 248 | #endif␊ |
| 249 | #elif defined (__OpenBSD__)␊ |
| 250 | #if defined(__i386__)␊ |
| 251 | #define iopl i386_iopl␊ |
| 252 | #elif defined(__amd64__)␊ |
| 253 | #define iopl amd64_iopl␊ |
| 254 | #endif␊ |
| 255 | #endif␊ |
| 256 | ␊ |
| 257 | static inline void outb(uint8_t value, uint16_t port)␊ |
| 258 | {␊ |
| 259 | ␉asm volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));␊ |
| 260 | }␊ |
| 261 | ␊ |
| 262 | static inline uint8_t inb(uint16_t port)␊ |
| 263 | {␊ |
| 264 | ␉uint8_t value;␊ |
| 265 | ␉asm volatile ("inb %w1,%0":"=a" (value):"Nd" (port));␊ |
| 266 | ␉return value;␊ |
| 267 | }␊ |
| 268 | ␊ |
| 269 | static inline void outw(uint16_t value, uint16_t port)␊ |
| 270 | {␊ |
| 271 | ␉asm volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));␊ |
| 272 | }␊ |
| 273 | ␊ |
| 274 | static inline uint16_t inw(uint16_t port)␊ |
| 275 | {␊ |
| 276 | ␉uint16_t value;␊ |
| 277 | ␉asm volatile ("inw %w1,%0":"=a" (value):"Nd" (port));␊ |
| 278 | ␉return value;␊ |
| 279 | }␊ |
| 280 | ␊ |
| 281 | static inline void outl(uint32_t value, uint16_t port)␊ |
| 282 | {␊ |
| 283 | ␉asm volatile ("outl %0,%w1": :"a" (value), "Nd" (port));␊ |
| 284 | }␊ |
| 285 | ␊ |
| 286 | static inline uint32_t inl(uint16_t port)␊ |
| 287 | {␊ |
| 288 | ␉uint32_t value;␊ |
| 289 | ␉asm volatile ("inl %1,%0":"=a" (value):"Nd" (port));␊ |
| 290 | ␉return value;␊ |
| 291 | }␊ |
| 292 | #endif␊ |
| 293 | #endif␊ |
| 294 | ␊ |
| 295 | #if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__) && !defined(__LIBPAYLOAD__)␊ |
| 296 | typedef struct { uint32_t hi, lo; } msr_t;␊ |
| 297 | msr_t rdmsr(int addr);␊ |
| 298 | int wrmsr(int addr, msr_t msr);␊ |
| 299 | #endif␊ |
| 300 | #if defined(__FreeBSD__) || defined(__DragonFly__)␊ |
| 301 | /* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */␊ |
| 302 | #undef rdmsr␊ |
| 303 | #undef wrmsr␊ |
| 304 | #define rdmsr freebsd_rdmsr␊ |
| 305 | #define wrmsr freebsd_wrmsr␊ |
| 306 | typedef struct { uint32_t hi, lo; } msr_t;␊ |
| 307 | msr_t freebsd_rdmsr(int addr);␊ |
| 308 | int freebsd_wrmsr(int addr, msr_t msr);␊ |
| 309 | #endif␊ |
| 310 | #if defined(__LIBPAYLOAD__)␊ |
| 311 | #include <arch/io.h>␊ |
| 312 | #include <arch/msr.h>␊ |
| 313 | typedef struct { uint32_t hi, lo; } msr_t;␊ |
| 314 | msr_t libpayload_rdmsr(int addr);␊ |
| 315 | int libpayload_wrmsr(int addr, msr_t msr);␊ |
| 316 | #undef rdmsr␊ |
| 317 | #define rdmsr libpayload_rdmsr␊ |
| 318 | #define wrmsr libpayload_wrmsr␊ |
| 319 | #endif␊ |
| 320 | ␊ |
| 321 | #elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)␊ |
| 322 | ␊ |
| 323 | /* PCI port I/O is not yet implemented on PowerPC. */␊ |
| 324 | ␊ |
| 325 | #elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)␊ |
| 326 | ␊ |
| 327 | /* PCI port I/O is not yet implemented on MIPS. */␊ |
| 328 | ␊ |
| 329 | #else␊ |
| 330 | ␊ |
| 331 | #error Unknown architecture, please check if it supports PCI port IO.␊ |
| 332 | ␊ |
| 333 | #endif␊ |
| 334 | #endif␊ |
| 335 | ␊ |
| 336 | #endif /* !__HWACCESS_H__ */␊ |
| 337 | |
