git.maemo.org Git - qemu/blob - hw/beagle.c

   1 /*\r
   2  * Beagle board emulation. http://beagleboard.org/\r
   3  * \r
   4  * Copyright (C) 2008 yajin(yajin@vm-kernel.org)\r
   5  *\r
   6  * This program is free software; you can redistribute it and/or\r
   7  * modify it under the terms of the GNU General Public License as\r
   8  * published by the Free Software Foundation; either version 2 or\r
   9  * (at your option) version 3 of the License.\r
  10  *\r
  11  * This program is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with this program; if not, write to the Free Software\r
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,\r
  19  * MA 02111-1307 USA\r
  20  */\r
  21 \r
  22 #include "qemu-common.h"\r
  23 #include "sysemu.h"\r
  24 #include "omap.h"\r
  25 #include "arm-misc.h"\r
  26 #include "irq.h"\r
  27 #include "console.h"\r
  28 #include "boards.h"\r
  29 #include "i2c.h"\r
  30 #include "devices.h"\r
  31 #include "flash.h"\r
  32 #include "hw.h"\r
  33 #include "block.h"\r
  34 \r
  35 #define BEAGLE_NAND_CS                  0\r
  36 \r
  37 #define GPMC_NOR             0\r
  38 #define GPMC_NAND           1\r
  39 #define GPMC_MDOC           2\r
  40 #define GPMC_ONENAND    3\r
  41 #define MMC_NAND            4\r
  42 #define MMC_ONENAND     5\r
  43 \r
  44 \r
  45 #define TST_DEVICE              0x0\r
  46 #define EMU_DEVICE              0x1\r
  47 #define HS_DEVICE               0x2\r
  48 #define GP_DEVICE               0x3\r
  49 \r
  50 #define DEBUG_BEAGLE\r
  51 \r
  52 #ifdef DEBUG_BEAGLE\r
  53 #define BEAGLE_DEBUG(...)    do { fprintf(stderr, __VA_ARGS__); } while(0)\r
  54 #else\r
  55 #define BEAGLE_DEBUG(x)    \r
  56 #endif\r
  57 \r
  58 /* Beagle board support */\r
  59 struct beagle_s {\r
  60     struct omap_mpu_state_s *cpu;\r
  61     \r
  62     struct nand_bflash_s *nand;\r
  63     struct omap3_lcd_panel_s *lcd_panel;\r
  64     i2c_bus *i2c;\r
  65     struct twl4030_s *twl4030;\r
  66 };\r
  67 \r
  68 \r
  69 \r
  70 static struct arm_boot_info beagle_binfo = {\r
  71     .ram_size = 0x08000000,\r
  72 };\r
  73 \r
  74 \r
  75 static uint32_t beagle_nand_read16(void *opaque, target_phys_addr_t addr)\r
  76 {\r
  77         struct beagle_s *s = (struct beagle_s *) opaque;\r
  78     //BEAGLE_DEBUG("beagle_nand_read16 offset %x\n",addr);\r
  79 \r
  80         switch (addr)\r
  81         {\r
  82                 case 0x7C: /*NAND_COMMAND*/\r
  83                 case 0x80: /*NAND_ADDRESS*/\r
  84                         OMAP_BAD_REG(addr);\r
  85                         break;\r
  86                 case 0x84: /*NAND_DATA*/\r
  87                         return nandb_read_data16(s->nand);\r
  88                         break;\r
  89                 default:\r
  90                         OMAP_BAD_REG(addr);\r
  91                         break;\r
  92         }\r
  93     return 0;\r
  94 }\r
  95 \r
  96 static void beagle_nand_write16(void *opaque, target_phys_addr_t addr,\r
  97                 uint32_t value)\r
  98 {\r
  99         struct beagle_s *s = (struct beagle_s *) opaque;\r
 100     switch (addr)\r
 101         {\r
 102                 case 0x7C: /*NAND_COMMAND*/\r
 103                         nandb_write_command(s->nand,value);\r
 104                         break;\r
 105                 case 0x80: /*NAND_ADDRESS*/\r
 106                         nandb_write_address(s->nand,value);\r
 107                         break;\r
 108                 case 0x84: /*NAND_DATA*/\r
 109                         nandb_write_data16(s->nand,value);\r
 110                         break;\r
 111                 default:\r
 112                         OMAP_BAD_REG(addr);\r
 113                         break;\r
 114         }\r
 115 }\r
 116 \r
 117 \r
 118 static CPUReadMemoryFunc *beagle_nand_readfn[] = {\r
 119         beagle_nand_read16,\r
 120         beagle_nand_read16,\r
 121         omap_badwidth_read32,\r
 122 };\r
 123 \r
 124 static CPUWriteMemoryFunc *beagle_nand_writefn[] = {\r
 125         beagle_nand_write16,\r
 126         beagle_nand_write16,\r
 127         omap_badwidth_write32,\r
 128 };\r
 129 \r
 130 static void beagle_nand_setup(struct beagle_s *s)\r
 131 {\r
 132         //int iomemtype;\r
 133         \r
 134         /*MT29F2G16ABC*/\r
 135         s->nand = nandb_init(NAND_MFR_MICRON,0xba);\r
 136         /*wp=1, no write protect!!! */\r
 137         //nand_set_wp(s->nand, 1);\r
 138 \r
 139 /*      iomemtype = cpu_register_io_memory(0, beagle_nand_readfn,\r
 140                     beagle_nand_writefn, s);\r
 141     cpu_register_physical_memory(0x6e00007c, 0xc, iomemtype);*/\r
 142     omap_gpmc_attach(s->cpu->gpmc, 0, 0, NULL, NULL, s, beagle_nand_readfn, beagle_nand_writefn);\r
 143 \r
 144          /*BOOT from nand*/\r
 145     omap3_set_mem_type(s->cpu,GPMC_NAND);\r
 146 \r
 147 }\r
 148 \r
 149 static int beagle_nand_read_page(struct beagle_s *s,uint8_t *buf, uint16_t page_addr)\r
 150 {\r
 151         uint16_t *p;\r
 152         int i;\r
 153 \r
 154         p=(uint16_t *)buf;\r
 155 \r
 156         /*send command 0x0*/\r
 157         beagle_nand_write16(s,0x7C,0);\r
 158         /*send page address */\r
 159         beagle_nand_write16(s,0x80,page_addr&0xff);\r
 160         beagle_nand_write16(s,0x80,(page_addr>>8)&0x7);\r
 161         beagle_nand_write16(s,0x80,(page_addr>>11)&0xff);\r
 162         beagle_nand_write16(s,0x80,(page_addr>>19)&0xff);\r
 163         beagle_nand_write16(s,0x80,(page_addr>>27)&0xff);\r
 164         /*send command 0x30*/\r
 165         beagle_nand_write16(s,0x7C,0x30);\r
 166 \r
 167         for (i=0;i<0x800/2;i++)\r
 168         {\r
 169                 *p++ = beagle_nand_read16(s,0x84);\r
 170         }\r
 171         return 1;\r
 172 }\r
 173 \r
 174 /*read the xloader from NAND Flash into internal RAM*/\r
 175 static int beagle_boot_from_nand(struct beagle_s *s)\r
 176 {\r
 177         uint32_t        loadaddr, len;\r
 178         uint8_t nand_page[0x800],*load_dest;\r
 179         uint32_t nand_pages,i;\r
 180 \r
 181         /* The first two words(8 bytes) in first nand flash page have special meaning.\r
 182                 First word:x-loader len\r
 183                 Second word: x-load address in internal ram */\r
 184         beagle_nand_read_page(s,nand_page,0);\r
 185         len = *((uint32_t*)nand_page);\r
 186         loadaddr =  *((uint32_t*)(nand_page+4));\r
 187         if ((len==0)||(loadaddr==0)||(len==0xffffffff)||(loadaddr==0xffffffff))\r
 188                 return (-1);\r
 189 \r
 190         /*put the first page into internal ram*/\r
 191         load_dest = phys_ram_base +beagle_binfo.ram_size;\r
 192         load_dest += loadaddr-OMAP3_SRAM_BASE;\r
 193         \r
 194         BEAGLE_DEBUG("load_dest %x phys_ram_base %x \n",(unsigned)load_dest,(unsigned)phys_ram_base);\r
 195         \r
 196         memcpy(load_dest,nand_page+8,0x800-8);\r
 197         load_dest += 0x800-8;\r
 198 \r
 199         nand_pages = len/0x800;\r
 200         if (len%0x800!=0)\r
 201                 nand_pages++;\r
 202 \r
 203         for (i=1;i<nand_pages;i++)\r
 204         {\r
 205                 beagle_nand_read_page(s,nand_page,i*0x800);\r
 206                 memcpy(load_dest,nand_page,0x800);\r
 207                 load_dest += 0x800;\r
 208         }\r
 209         s->cpu->env->regs[15] = loadaddr;\r
 210         return 0;\r
 211 \r
 212 }\r
 213 \r
 214 static int beagle_rom_emu(struct beagle_s *s)\r
 215 {\r
 216     if (!omap3_mmc_boot(s->cpu))\r
 217         if (beagle_boot_from_nand(s) < 0)\r
 218             return -1;\r
 219         return 0;\r
 220 }\r
 221 \r
 222 static void beagle_dss_setup(struct beagle_s *s)\r
 223 {\r
 224         s->lcd_panel = omap3_lcd_panel_init();\r
 225         omap3_lcd_panel_attach(s->cpu->dss, 0, s->lcd_panel);\r
 226         s->lcd_panel->dss = s->cpu->dss;\r
 227 }\r
 228 \r
 229 static void beagle_mmc_cs_cb(void *opaque, int line, int level)\r
 230 {\r
 231     /* TODO: this seems to actually be connected to the menelaus, to\r
 232      * which also both MMC slots connect.  */\r
 233     omap_mmc_enable((struct omap_mmc_s *) opaque, !level);\r
 234 \r
 235     printf("%s: MMC slot %i active\n", __FUNCTION__, level + 1);\r
 236 }\r
 237 \r
 238 static void beagle_i2c_setup(struct beagle_s *s)\r
 239 {\r
 240     /* Attach the CPU on one end of our I2C bus.  */\r
 241     s->i2c = omap_i2c_bus(s->cpu->i2c[0]);\r
 242 \r
 243     s->twl4030 = twl4030_init(s->i2c, s->cpu->irq[0][OMAP_INT_35XX_SYS_NIRQ]);\r
 244 }\r
 245 \r
 246 \r
 247 static void beagle_init(ram_addr_t ram_size, int vga_ram_size,\r
 248                 const char *boot_device,\r
 249                 const char *kernel_filename, const char *kernel_cmdline,\r
 250                 const char *initrd_filename, const char *cpu_model)\r
 251 {\r
 252     struct beagle_s *s = (struct beagle_s *) qemu_mallocz(sizeof(*s));\r
 253     int sdram_size = beagle_binfo.ram_size;\r
 254 \r
 255         if (ram_size < sdram_size +  OMAP3530_SRAM_SIZE) {\r
 256         fprintf(stderr, "This architecture uses %i bytes of memory\n",\r
 257                         sdram_size + OMAP3530_SRAM_SIZE);\r
 258         exit(1);\r
 259     }\r
 260         s->cpu = omap3530_mpu_init(sdram_size, NULL);\r
 261         beagle_nand_setup(s);\r
 262         beagle_i2c_setup(s);\r
 263         beagle_dss_setup(s);\r
 264         omap3_set_device_type(s->cpu,GP_DEVICE);\r
 265     if (beagle_rom_emu(s) < 0) {\r
 266                 fprintf(stderr,"boot from MMC and nand failed \n");\r
 267                 exit(-1);\r
 268         }\r
 269 }\r
 270 \r
 271 \r
 272 \r
 273 QEMUMachine beagle_machine = {\r
 274     .name = "beagle",\r
 275     .desc =     "Beagle board (OMAP3530)",\r
 276     .init =     beagle_init,\r
 277     .ram_require =     (0x08000000 +  OMAP3530_SRAM_SIZE) | RAMSIZE_FIXED,\r
 278 };\r
 279 \r