include/configs/T4240RDB.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2014 Freescale Semiconductor, Inc.
   4  * Copyright 2020-2021 NXP
   5  */
   6
   7 /*
   8  * T4240 RDB board configuration file
   9  */
  10 #ifndef __CONFIG_H
  11 #define __CONFIG_H
  12
  13 #include <linux/stringify.h>
  14
  15 #define CONFIG_ICS307_REFCLK_HZ         25000000  /* ICS307 ref clk freq */
  16
  17 #ifdef CONFIG_RAMBOOT_PBL
  18 #ifndef CONFIG_SDCARD
  19 #define CONFIG_RESET_VECTOR_ADDRESS     0xfffffffc
  20 #else
  21 #define RESET_VECTOR_OFFSET             0x27FFC
  22 #define BOOT_PAGE_OFFSET                0x27000
  23
  24 #ifdef  CONFIG_SDCARD
  25 #define CONFIG_RESET_VECTOR_ADDRESS     0x200FFC
  26 #define CFG_SYS_MMC_U_BOOT_SIZE (768 << 10)
  27 #define CFG_SYS_MMC_U_BOOT_DST  0x00200000
  28 #define CFG_SYS_MMC_U_BOOT_START        0x00200000
  29 #define CFG_SYS_MMC_U_BOOT_OFFS (260 << 10)
  30 #endif
  31
  32 #endif
  33 #endif /* CONFIG_RAMBOOT_PBL */
  34
  35 /* High Level Configuration Options */
  36
  37 #ifndef CONFIG_RESET_VECTOR_ADDRESS
  38 #define CONFIG_RESET_VECTOR_ADDRESS     0xeffffffc
  39 #endif
  40
  41 #define CFG_SYS_NUM_CPC         CONFIG_SYS_NUM_DDR_CTLRS
  42
  43 /*
  44  * These can be toggled for performance analysis, otherwise use default.
  45  */
  46 #ifdef CONFIG_DDR_ECC
  47 #define CONFIG_MEM_INIT_VALUE           0xdeadbeef
  48 #endif
  49
  50 /*
  51  *  Config the L3 Cache as L3 SRAM
  52  */
  53 #define CFG_SYS_INIT_L3_ADDR            0xFFFC0000
  54 #define SPL_ENV_ADDR                    (CONFIG_SPL_GD_ADDR + 4 * 1024)
  55
  56 #define CFG_SYS_DCSRBAR         0xf0000000
  57 #define CFG_SYS_DCSRBAR_PHYS            0xf00000000ull
  58
  59 /*
  60  * DDR Setup
  61  */
  62 #define CFG_SYS_DDR_SDRAM_BASE  0x00000000
  63 #define CFG_SYS_SDRAM_BASE              CFG_SYS_DDR_SDRAM_BASE
  64
  65 /*
  66  * IFC Definitions
  67  */
  68 #define CFG_SYS_FLASH_BASE      0xe0000000
  69 #define CFG_SYS_FLASH_BASE_PHYS (0xf00000000ull | CFG_SYS_FLASH_BASE)
  70
  71 /* define to use L1 as initial stack */
  72 #define CFG_SYS_INIT_RAM_ADDR   0xfdd00000      /* Initial L1 address */
  73 #define CFG_SYS_INIT_RAM_ADDR_PHYS_HIGH 0xf
  74 #define CFG_SYS_INIT_RAM_ADDR_PHYS_LOW  0xfe03c000
  75 /* The assembler doesn't like typecast */
  76 #define CFG_SYS_INIT_RAM_ADDR_PHYS \
  77         ((CFG_SYS_INIT_RAM_ADDR_PHYS_HIGH * 1ull << 32) | \
  78           CFG_SYS_INIT_RAM_ADDR_PHYS_LOW)
  79 #define CFG_SYS_INIT_RAM_SIZE           0x00004000
  80
  81 #define CFG_SYS_INIT_SP_OFFSET  (CFG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
  82
  83 /* Serial Port - controlled on board with jumper J8
  84  * open - index 2
  85  * shorted - index 1
  86  */
  87 #define CFG_SYS_NS16550_CLK             (get_bus_freq(0)/2)
  88
  89 #define CFG_SYS_BAUDRATE_TABLE  \
  90         {300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200}
  91
  92 #define CFG_SYS_NS16550_COM1    (CFG_SYS_CCSRBAR+0x11C500)
  93 #define CFG_SYS_NS16550_COM2    (CFG_SYS_CCSRBAR+0x11C600)
  94 #define CFG_SYS_NS16550_COM3    (CFG_SYS_CCSRBAR+0x11D500)
  95 #define CFG_SYS_NS16550_COM4    (CFG_SYS_CCSRBAR+0x11D600)
  96
  97 /* I2C */
  98
  99 /*
 100  * General PCI
 101  * Memory space is mapped 1-1, but I/O space must start from 0.
 102  */
 103
 104 /* controller 1, direct to uli, tgtid 3, Base address 20000 */
 105 #define CFG_SYS_PCIE1_MEM_VIRT  0x80000000
 106 #define CFG_SYS_PCIE1_MEM_PHYS  0xc00000000ull
 107 #define CFG_SYS_PCIE1_IO_VIRT   0xf8000000
 108 #define CFG_SYS_PCIE1_IO_PHYS   0xff8000000ull
 109
 110 /* controller 2, Slot 2, tgtid 2, Base address 201000 */
 111 #define CFG_SYS_PCIE2_MEM_VIRT  0xa0000000
 112 #define CFG_SYS_PCIE2_MEM_PHYS  0xc20000000ull
 113 #define CFG_SYS_PCIE2_IO_VIRT   0xf8010000
 114 #define CFG_SYS_PCIE2_IO_PHYS   0xff8010000ull
 115
 116 /* controller 3, Slot 1, tgtid 1, Base address 202000 */
 117 #define CFG_SYS_PCIE3_MEM_VIRT  0xc0000000
 118 #define CFG_SYS_PCIE3_MEM_PHYS  0xc40000000ull
 119
 120 /* controller 4, Base address 203000 */
 121 #define CFG_SYS_PCIE4_MEM_BUS   0xe0000000
 122 #define CFG_SYS_PCIE4_MEM_PHYS  0xc60000000ull
 123
 124 /*
 125  * Miscellaneous configurable options
 126  */
 127
 128 /*
 129  * For booting Linux, the board info and command line data
 130  * have to be in the first 64 MB of memory, since this is
 131  * the maximum mapped by the Linux kernel during initialization.
 132  */
 133 #define CFG_SYS_BOOTMAPSZ       (64 << 20)      /* Initial map for Linux*/
 134
 135 /*
 136  * Environment Configuration
 137  */
 138
 139 #define HVBOOT                                  \
 140         "setenv bootargs config-addr=0x60000000; "      \
 141         "bootm 0x01000000 - 0x00f00000"
 142
 143 /*
 144  * DDR Setup
 145  */
 146 #define SPD_EEPROM_ADDRESS1     0x52
 147 #define SPD_EEPROM_ADDRESS2     0x54
 148 #define SPD_EEPROM_ADDRESS3     0x56
 149 #define SPD_EEPROM_ADDRESS      SPD_EEPROM_ADDRESS1     /* for p3041/p5010 */
 150 #define CFG_SYS_SDRAM_SIZE      4096    /* for fixed parameter use */
 151
 152 /*
 153  * IFC Definitions
 154  */
 155 #define CFG_SYS_NOR0_CSPR_EXT   (0xf)
 156 #define CFG_SYS_NOR0_CSPR       (CSPR_PHYS_ADDR(CFG_SYS_FLASH_BASE_PHYS \
 157                                 + 0x8000000) | \
 158                                 CSPR_PORT_SIZE_16 | \
 159                                 CSPR_MSEL_NOR | \
 160                                 CSPR_V)
 161 #define CFG_SYS_NOR1_CSPR_EXT   (0xf)
 162 #define CFG_SYS_NOR1_CSPR       (CSPR_PHYS_ADDR(CFG_SYS_FLASH_BASE_PHYS) | \
 163                                 CSPR_PORT_SIZE_16 | \
 164                                 CSPR_MSEL_NOR | \
 165                                 CSPR_V)
 166 #define CFG_SYS_NOR_AMASK       IFC_AMASK(128*1024*1024)
 167 /* NOR Flash Timing Params */
 168 #define CFG_SYS_NOR_CSOR        CSOR_NAND_TRHZ_80
 169
 170 #define CFG_SYS_NOR_FTIM0       (FTIM0_NOR_TACSE(0x4) | \
 171                                 FTIM0_NOR_TEADC(0x5) | \
 172                                 FTIM0_NOR_TEAHC(0x5))
 173 #define CFG_SYS_NOR_FTIM1       (FTIM1_NOR_TACO(0x35) | \
 174                                 FTIM1_NOR_TRAD_NOR(0x1A) |\
 175                                 FTIM1_NOR_TSEQRAD_NOR(0x13))
 176 #define CFG_SYS_NOR_FTIM2       (FTIM2_NOR_TCS(0x4) | \
 177                                 FTIM2_NOR_TCH(0x4) | \
 178                                 FTIM2_NOR_TWPH(0x0E) | \
 179                                 FTIM2_NOR_TWP(0x1c))
 180 #define CFG_SYS_NOR_FTIM3       0x0
 181
 182 #define CFG_SYS_FLASH_BANKS_LIST        {CFG_SYS_FLASH_BASE_PHYS \
 183                                         + 0x8000000, CFG_SYS_FLASH_BASE_PHYS}
 184
 185 /* NAND Flash on IFC */
 186 #define CFG_SYS_NAND_BASE               0xff800000
 187 #define CFG_SYS_NAND_BASE_PHYS  (0xf00000000ull | CFG_SYS_NAND_BASE)
 188
 189 #define CFG_SYS_NAND_CSPR_EXT   (0xf)
 190 #define CFG_SYS_NAND_CSPR       (CSPR_PHYS_ADDR(CFG_SYS_NAND_BASE_PHYS) \
 191                                 | CSPR_PORT_SIZE_8 /* Port Size = 8 bit */ \
 192                                 | CSPR_MSEL_NAND        /* MSEL = NAND */ \
 193                                 | CSPR_V)
 194 #define CFG_SYS_NAND_AMASK      IFC_AMASK(64*1024)
 195
 196 #define CFG_SYS_NAND_CSOR    (CSOR_NAND_ECC_ENC_EN   /* ECC on encode */ \
 197                                 | CSOR_NAND_ECC_DEC_EN  /* ECC on decode */ \
 198                                 | CSOR_NAND_ECC_MODE_4  /* 4-bit ECC */ \
 199                                 | CSOR_NAND_RAL_3       /* RAL = 2Byes */ \
 200                                 | CSOR_NAND_PGS_4K      /* Page Size = 4K */ \
 201                                 | CSOR_NAND_SPRZ_224    /* Spare size = 224 */ \
 202                                 | CSOR_NAND_PB(128))    /*Page Per Block = 128*/
 203
 204 /* ONFI NAND Flash mode0 Timing Params */
 205 #define CFG_SYS_NAND_FTIM0              (FTIM0_NAND_TCCST(0x07) | \
 206                                         FTIM0_NAND_TWP(0x18)   | \
 207                                         FTIM0_NAND_TWCHT(0x07) | \
 208                                         FTIM0_NAND_TWH(0x0a))
 209 #define CFG_SYS_NAND_FTIM1              (FTIM1_NAND_TADLE(0x32) | \
 210                                         FTIM1_NAND_TWBE(0x39)  | \
 211                                         FTIM1_NAND_TRR(0x0e)   | \
 212                                         FTIM1_NAND_TRP(0x18))
 213 #define CFG_SYS_NAND_FTIM2              (FTIM2_NAND_TRAD(0x0f) | \
 214                                         FTIM2_NAND_TREH(0x0a) | \
 215                                         FTIM2_NAND_TWHRE(0x1e))
 216 #define CFG_SYS_NAND_FTIM3              0x0
 217
 218 #define CFG_SYS_NAND_BASE_LIST  { CFG_SYS_NAND_BASE }
 219
 220 #if defined(CONFIG_MTD_RAW_NAND)
 221 #define CFG_SYS_CSPR0_EXT               CFG_SYS_NAND_CSPR_EXT
 222 #define CFG_SYS_CSPR0           CFG_SYS_NAND_CSPR
 223 #define CFG_SYS_AMASK0          CFG_SYS_NAND_AMASK
 224 #define CFG_SYS_CSOR0           CFG_SYS_NAND_CSOR
 225 #define CFG_SYS_CS0_FTIM0               CFG_SYS_NAND_FTIM0
 226 #define CFG_SYS_CS0_FTIM1               CFG_SYS_NAND_FTIM1
 227 #define CFG_SYS_CS0_FTIM2               CFG_SYS_NAND_FTIM2
 228 #define CFG_SYS_CS0_FTIM3               CFG_SYS_NAND_FTIM3
 229 #define CFG_SYS_CSPR2_EXT               CFG_SYS_NOR0_CSPR_EXT
 230 #define CFG_SYS_CSPR2           CFG_SYS_NOR0_CSPR
 231 #define CFG_SYS_AMASK2          CFG_SYS_NOR_AMASK
 232 #define CFG_SYS_CSOR2           CFG_SYS_NOR_CSOR
 233 #define CFG_SYS_CS2_FTIM0               CFG_SYS_NOR_FTIM0
 234 #define CFG_SYS_CS2_FTIM1               CFG_SYS_NOR_FTIM1
 235 #define CFG_SYS_CS2_FTIM2               CFG_SYS_NOR_FTIM2
 236 #define CFG_SYS_CS2_FTIM3               CFG_SYS_NOR_FTIM3
 237 #else
 238 #define CFG_SYS_CSPR0_EXT               CFG_SYS_NOR0_CSPR_EXT
 239 #define CFG_SYS_CSPR0           CFG_SYS_NOR0_CSPR
 240 #define CFG_SYS_AMASK0          CFG_SYS_NOR_AMASK
 241 #define CFG_SYS_CSOR0           CFG_SYS_NOR_CSOR
 242 #define CFG_SYS_CS0_FTIM0               CFG_SYS_NOR_FTIM0
 243 #define CFG_SYS_CS0_FTIM1               CFG_SYS_NOR_FTIM1
 244 #define CFG_SYS_CS0_FTIM2               CFG_SYS_NOR_FTIM2
 245 #define CFG_SYS_CS0_FTIM3               CFG_SYS_NOR_FTIM3
 246 #define CFG_SYS_CSPR1_EXT               CFG_SYS_NAND_CSPR_EXT
 247 #define CFG_SYS_CSPR1           CFG_SYS_NAND_CSPR
 248 #define CFG_SYS_AMASK1          CFG_SYS_NAND_AMASK
 249 #define CFG_SYS_CSOR1           CFG_SYS_NAND_CSOR
 250 #define CFG_SYS_CS1_FTIM0               CFG_SYS_NAND_FTIM0
 251 #define CFG_SYS_CS1_FTIM1               CFG_SYS_NAND_FTIM1
 252 #define CFG_SYS_CS1_FTIM2               CFG_SYS_NAND_FTIM2
 253 #define CFG_SYS_CS1_FTIM3               CFG_SYS_NAND_FTIM3
 254 #endif
 255 #define CFG_SYS_CSPR2_EXT               CFG_SYS_NOR1_CSPR_EXT
 256 #define CFG_SYS_CSPR2           CFG_SYS_NOR1_CSPR
 257 #define CFG_SYS_AMASK2          CFG_SYS_NOR_AMASK
 258 #define CFG_SYS_CSOR2           CFG_SYS_NOR_CSOR
 259 #define CFG_SYS_CS2_FTIM0               CFG_SYS_NOR_FTIM0
 260 #define CFG_SYS_CS2_FTIM1               CFG_SYS_NOR_FTIM1
 261 #define CFG_SYS_CS2_FTIM2               CFG_SYS_NOR_FTIM2
 262 #define CFG_SYS_CS2_FTIM3               CFG_SYS_NOR_FTIM3
 263
 264 /* CPLD on IFC */
 265 #define CFG_SYS_CPLD_BASE       0xffdf0000
 266 #define CFG_SYS_CPLD_BASE_PHYS  (0xf00000000ull | CFG_SYS_CPLD_BASE)
 267 #define CFG_SYS_CSPR3_EXT       (0xf)
 268 #define CFG_SYS_CSPR3   (CSPR_PHYS_ADDR(CFG_SYS_CPLD_BASE_PHYS) \
 269                                 | CSPR_PORT_SIZE_8 \
 270                                 | CSPR_MSEL_GPCM \
 271                                 | CSPR_V)
 272
 273 #define CFG_SYS_AMASK3  IFC_AMASK(64 * 1024)
 274 #define CFG_SYS_CSOR3   0x0
 275
 276 /* CPLD Timing parameters for IFC CS3 */
 277 #define CFG_SYS_CS3_FTIM0               (FTIM0_GPCM_TACSE(0x0e) | \
 278                                         FTIM0_GPCM_TEADC(0x0e) | \
 279                                         FTIM0_GPCM_TEAHC(0x0e))
 280 #define CFG_SYS_CS3_FTIM1               (FTIM1_GPCM_TACO(0x0e) | \
 281                                         FTIM1_GPCM_TRAD(0x1f))
 282 #define CFG_SYS_CS3_FTIM2               (FTIM2_GPCM_TCS(0x0e) | \
 283                                         FTIM2_GPCM_TCH(0x8) | \
 284                                         FTIM2_GPCM_TWP(0x1f))
 285 #define CFG_SYS_CS3_FTIM3               0x0
 286
 287 /* I2C */
 288 #define I2C_MUX_PCA_ADDR_PRI            0x77 /* I2C bus multiplexer,primary */
 289 #define I2C_MUX_PCA_ADDR_SEC            0x76 /* I2C bus multiplexer,secondary */
 290
 291 #define I2C_MUX_CH_DEFAULT      0x8
 292 #define I2C_MUX_CH_VOL_MONITOR  0xa
 293 #define I2C_MUX_CH_VSC3316_FS   0xc
 294 #define I2C_MUX_CH_VSC3316_BS   0xd
 295
 296 /* Voltage monitor on channel 2*/
 297 #define I2C_VOL_MONITOR_ADDR            0x40
 298 #define I2C_VOL_MONITOR_BUS_V_OFFSET    0x2
 299 #define I2C_VOL_MONITOR_BUS_V_OVF       0x1
 300 #define I2C_VOL_MONITOR_BUS_V_SHIFT     3
 301
 302 /* The lowest and highest voltage allowed for T4240RDB */
 303 #define VDD_MV_MIN                      819
 304 #define VDD_MV_MAX                      1212
 305
 306 /*
 307  * eSPI - Enhanced SPI
 308  */
 309
 310 /* Qman/Bman */
 311 #ifndef CONFIG_NOBQFMAN
 312 #define CFG_SYS_BMAN_NUM_PORTALS        50
 313 #define CFG_SYS_BMAN_MEM_BASE   0xf4000000
 314 #define CFG_SYS_BMAN_MEM_PHYS   0xff4000000ull
 315 #define CFG_SYS_BMAN_MEM_SIZE   0x02000000
 316 #define CFG_SYS_BMAN_SP_CENA_SIZE    0x4000
 317 #define CFG_SYS_BMAN_SP_CINH_SIZE    0x1000
 318 #define CFG_SYS_BMAN_CENA_BASE       CFG_SYS_BMAN_MEM_BASE
 319 #define CFG_SYS_BMAN_CENA_SIZE       (CFG_SYS_BMAN_MEM_SIZE >> 1)
 320 #define CFG_SYS_BMAN_CINH_BASE       (CFG_SYS_BMAN_MEM_BASE + \
 321                                         CFG_SYS_BMAN_CENA_SIZE)
 322 #define CFG_SYS_BMAN_CINH_SIZE       (CFG_SYS_BMAN_MEM_SIZE >> 1)
 323 #define CFG_SYS_BMAN_SWP_ISDR_REG    0xE08
 324 #define CFG_SYS_QMAN_NUM_PORTALS        50
 325 #define CFG_SYS_QMAN_MEM_BASE   0xf6000000
 326 #define CFG_SYS_QMAN_MEM_PHYS   0xff6000000ull
 327 #define CFG_SYS_QMAN_MEM_SIZE   0x02000000
 328 #define CFG_SYS_QMAN_SP_CINH_SIZE    0x1000
 329 #define CFG_SYS_QMAN_CENA_SIZE       (CFG_SYS_QMAN_MEM_SIZE >> 1)
 330 #define CFG_SYS_QMAN_CINH_BASE       (CFG_SYS_QMAN_MEM_BASE + \
 331                                         CFG_SYS_QMAN_CENA_SIZE)
 332 #define CFG_SYS_QMAN_CINH_SIZE       (CFG_SYS_QMAN_MEM_SIZE >> 1)
 333 #define CFG_SYS_QMAN_SWP_ISDR_REG       0xE08
 334 #endif /* CONFIG_NOBQFMAN */
 335
 336 #ifdef CONFIG_SYS_DPAA_FMAN
 337 #define SGMII_PHY_ADDR1 0x0
 338 #define SGMII_PHY_ADDR2 0x1
 339 #define SGMII_PHY_ADDR3 0x2
 340 #define SGMII_PHY_ADDR4 0x3
 341 #define SGMII_PHY_ADDR5 0x4
 342 #define SGMII_PHY_ADDR6 0x5
 343 #define SGMII_PHY_ADDR7 0x6
 344 #define SGMII_PHY_ADDR8 0x7
 345 #define FM1_10GEC1_PHY_ADDR     0x10
 346 #define FM1_10GEC2_PHY_ADDR     0x11
 347 #define FM2_10GEC1_PHY_ADDR     0x12
 348 #define FM2_10GEC2_PHY_ADDR     0x13
 349 #define CORTINA_PHY_ADDR1       FM1_10GEC1_PHY_ADDR
 350 #define CORTINA_PHY_ADDR2       FM1_10GEC2_PHY_ADDR
 351 #define CORTINA_PHY_ADDR3       FM2_10GEC1_PHY_ADDR
 352 #define CORTINA_PHY_ADDR4       FM2_10GEC2_PHY_ADDR
 353 #endif
 354
 355 /*
 356 * USB
 357 */
 358
 359 #ifdef CONFIG_MMC
 360 #define CFG_SYS_FSL_ESDHC_ADDR       CFG_SYS_MPC85xx_ESDHC_ADDR
 361 #endif
 362
 363
 364 #define __USB_PHY_TYPE  utmi
 365
 366 /*
 367  * T4240 has 3 DDR controllers. Default to 3-way interleaving. It can be
 368  * 3way_1KB, 3way_4KB, 3way_8KB. T4160 has 2 DDR controllers. Default to 2-way
 369  * interleaving. It can be cacheline, page, bank, superbank.
 370  * See doc/README.fsl-ddr for details.
 371  */
 372 #ifdef CONFIG_ARCH_T4240
 373 #define CTRL_INTLV_PREFERED 3way_4KB
 374 #else
 375 #define CTRL_INTLV_PREFERED cacheline
 376 #endif
 377
 378 #define CONFIG_EXTRA_ENV_SETTINGS                               \
 379         "hwconfig=fsl_ddr:"                                     \
 380         "ctlr_intlv=" __stringify(CTRL_INTLV_PREFERED) ","      \
 381         "bank_intlv=auto;"                                      \
 382         "usb1:dr_mode=host,phy_type=" __stringify(__USB_PHY_TYPE) "\0"\
 383         "netdev=eth0\0"                                         \
 384         "uboot=" CONFIG_UBOOTPATH "\0"          \
 385         "ubootaddr=" __stringify(CONFIG_TEXT_BASE) "\0" \
 386         "tftpflash=tftpboot $loadaddr $uboot && "               \
 387         "protect off $ubootaddr +$filesize && "                 \
 388         "erase $ubootaddr +$filesize && "                       \
 389         "cp.b $loadaddr $ubootaddr $filesize && "               \
 390         "protect on $ubootaddr +$filesize && "                  \
 391         "cmp.b $loadaddr $ubootaddr $filesize\0"                \
 392         "consoledev=ttyS0\0"                                    \
 393         "ramdiskaddr=2000000\0"                                 \
 394         "ramdiskfile=t4240rdb/ramdisk.uboot\0"                  \
 395         "fdtaddr=1e00000\0"                                     \
 396         "fdtfile=t4240rdb/t4240rdb.dtb\0"                       \
 397         "bdev=sda3\0"
 398
 399 #define HVBOOT                                  \
 400         "setenv bootargs config-addr=0x60000000; "      \
 401         "bootm 0x01000000 - 0x00f00000"
 402
 403 #include <asm/fsl_secure_boot.h>
 404
 405 #endif  /* __CONFIG_H */