arch/all-pc/boot/grub2-aros/grub-core/kern/mips/loongson/init.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009,2010  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <grub/kernel.h>
  20 #include <grub/misc.h>
  21 #include <grub/env.h>
  22 #include <grub/time.h>
  23 #include <grub/types.h>
  24 #include <grub/misc.h>
  25 #include <grub/mm.h>
  26 #include <grub/machine/time.h>
  27 #include <grub/machine/kernel.h>
  28 #include <grub/machine/memory.h>
  29 #include <grub/memory.h>
  30 #include <grub/mips/loongson.h>
  31 #include <grub/cs5536.h>
  32 #include <grub/term.h>
  33 #include <grub/cpu/memory.h>
  34 #include <grub/i18n.h>
  35 #include <grub/video.h>
  36 #include <grub/terminfo.h>
  37 #include <grub/keyboard_layouts.h>
  38 #include <grub/serial.h>
  39 #include <grub/loader.h>
  40 #include <grub/at_keyboard.h>
  41
  42 grub_err_t
  43 grub_machine_mmap_iterate (grub_memory_hook_t hook)
  44 {
  45   hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20,
  46         GRUB_MEMORY_AVAILABLE);
  47   hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20,
  48         GRUB_MEMORY_AVAILABLE);
  49   return GRUB_ERR_NONE;
  50 }
  51
  52 static void
  53 init_pci (void)
  54 {
  55   auto int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid);
  56   int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid)
  57   {
  58     grub_pci_address_t addr;
  59     /* FIXME: autoscan for BARs and devices.  */
  60     switch (pciid)
  61       {
  62       case GRUB_LOONGSON_OHCI_PCIID:
  63         addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
  64         grub_pci_write (addr, 0x5025000);
  65         addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
  66         grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
  67                              | GRUB_PCI_COMMAND_PARITY_ERROR
  68                              | GRUB_PCI_COMMAND_BUS_MASTER
  69                              | GRUB_PCI_COMMAND_MEM_ENABLED);
  70
  71         addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
  72         grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES);
  73         break;
  74       case GRUB_LOONGSON_EHCI_PCIID:
  75         addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
  76         grub_pci_write (addr, 0x5026000);
  77         addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
  78         grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
  79                              | GRUB_PCI_COMMAND_PARITY_ERROR
  80                              | GRUB_PCI_COMMAND_BUS_MASTER
  81                              | GRUB_PCI_COMMAND_MEM_ENABLED);
  82
  83         addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
  84         grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
  85                              | GRUB_PCI_STATUS_CAPABILITIES);
  86         break;
  87       }
  88     return 0;
  89   }
  90
  91   *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c;
  92   *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff;
  93
  94   /* Setup PCI controller.  */
  95   *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
  96                                 + GRUB_PCI_REG_COMMAND))
  97     = GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER
  98     | GRUB_PCI_COMMAND_MEM_ENABLED;
  99   *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
 100                                 + GRUB_PCI_REG_STATUS))
 101     = (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
 102     | GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE
 103     | GRUB_PCI_STATUS_CAPABILITIES;
 104
 105   *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
 106                                 + GRUB_PCI_REG_CACHELINE)) = 0xff;
 107   *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
 108                                 + GRUB_PCI_REG_ADDRESS_REG0))
 109     = 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH;
 110   *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
 111                                 + GRUB_PCI_REG_ADDRESS_REG1)) = 0;
 112
 113   grub_pci_iterate (set_card);
 114 }
 115
 116 void
 117 grub_machine_init (void)
 118 {
 119   grub_addr_t modend;
 120   grub_uint32_t prid;
 121
 122   asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_PRID : "=r" (prid));
 123
 124   switch (prid)
 125     {
 126       /* Loongson 2E.  */
 127     case 0x6302:
 128       grub_arch_machine = GRUB_ARCH_MACHINE_FULOONG2E;
 129       break;
 130       /* Loongson 2F.  */
 131     case 0x6303:
 132       if (grub_arch_machine != GRUB_ARCH_MACHINE_FULOONG2F
 133           && grub_arch_machine != GRUB_ARCH_MACHINE_YEELOONG)
 134         grub_arch_machine = GRUB_ARCH_MACHINE_YEELOONG;
 135       break;
 136     }
 137
 138   /* FIXME: measure this.  */
 139   if (grub_arch_busclock == 0)
 140     {
 141       grub_arch_busclock = 66000000;
 142       grub_arch_cpuclock = 797000000;
 143     }
 144
 145   grub_install_get_time_ms (grub_rtc_get_time_ms);
 146
 147   if (grub_arch_memsize == 0)
 148     {
 149       grub_port_t smbbase;
 150       grub_err_t err;
 151       grub_pci_device_t dev;
 152       struct grub_smbus_spd spd;
 153       unsigned totalmem;
 154       int i;
 155
 156       if (!grub_cs5536_find (&dev))
 157         grub_fatal ("No CS5536 found\n");
 158
 159       err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase);
 160       if (err)
 161         grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg);
 162
 163       /* Yeeloong and Fuloong have only one memory slot.  */
 164       err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd);
 165       if (err)
 166         grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg);
 167       for (i = 5; i < 13; i++)
 168         if (spd.ddr2.rank_capacity & (1 << (i & 7)))
 169           break;
 170       /* Something is wrong.  */
 171       if (i == 13)
 172         totalmem = 256;
 173       else
 174         totalmem = ((spd.ddr2.num_of_ranks
 175                      & GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2);
 176
 177       if (totalmem >= 256)
 178         {
 179           grub_arch_memsize = 256;
 180           grub_arch_highmemsize = totalmem - 256;
 181         }
 182       else
 183         {
 184           grub_arch_memsize = totalmem;
 185           grub_arch_highmemsize = 0;
 186         }
 187
 188       grub_cs5536_init_geode (dev);
 189
 190       init_pci ();
 191     }
 192
 193   modend = grub_modules_get_end ();
 194   grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20)
 195                        - (modend - GRUB_ARCH_LOWMEMVSTART));
 196   /* FIXME: use upper memory as well.  */
 197
 198   /* Initialize output terminal (can't be done earlier, as gfxterm
 199      relies on a working heap.  */
 200   grub_video_sm712_init ();
 201   grub_video_sis315pro_init ();
 202   grub_video_radeon_fuloong2e_init ();
 203   grub_font_init ();
 204   grub_gfxterm_init ();
 205
 206   grub_keylayouts_init ();
 207   if (grub_arch_machine == GRUB_ARCH_MACHINE_YEELOONG)
 208     grub_at_keyboard_init ();
 209
 210   grub_terminfo_init ();
 211   grub_serial_init ();
 212
 213   grub_boot_init ();
 214 }
 215
 216 void
 217 grub_machine_fini (void)
 218 {
 219 }
 220
 221 void
 222 grub_halt (void)
 223 {
 224   switch (grub_arch_machine)
 225     {
 226     case GRUB_ARCH_MACHINE_FULOONG2E:
 227       break;
 228     case GRUB_ARCH_MACHINE_FULOONG2F:
 229       {
 230         grub_pci_device_t dev;
 231         grub_port_t p;
 232         if (grub_cs5536_find (&dev))
 233           {
 234             p = (grub_cs5536_read_msr (dev, GRUB_CS5536_MSR_GPIO_BAR)
 235                  & GRUB_CS5536_LBAR_ADDR_MASK) + GRUB_MACHINE_PCI_IO_BASE;
 236             grub_outl ((1 << 13), p + 4);
 237             grub_outl ((1 << 29), p);
 238             grub_millisleep (5000);
 239           }
 240       }
 241       break;
 242     case GRUB_ARCH_MACHINE_YEELOONG:
 243       grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG)
 244                  & ~GRUB_CPU_YEELOONG_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG);
 245       grub_millisleep (1500);
 246       break;
 247     }
 248
 249   grub_puts_ (N_("Shutdown failed"));
 250   grub_refresh ();
 251   while (1);
 252 }
 253
 254 void
 255 grub_exit (void)
 256 {
 257   grub_halt ();
 258 }
 259
 260 extern char _end[];
 261 grub_addr_t grub_modbase = (grub_addr_t) _end;
 262