git.zerfleddert.de Git - linexec-j720/blob - boot.cpp

   1 #include "stdafx.h"
   2 #include "tester1.h"
   3 #include <commctrl.h>
   4 //#include <aygshell.h>
   5 #include <sipapi.h>
   6 #include "setup.h"
   7
   8
   9 #define BOOT_LOGO_PATH "\\My Documents\\booting.bmp"
  10 #define BOOT_LOGO_PATH_CF "\\CF Card\\booting.bmp"
  11 #define BOOT_LOGO_DONE_PATH "\\My Documents\\done.bmp"
  12 #define BOOT_LOGO_DONE_PATH_CF "\\CF Card\\done.bmp"
  13 #define DONE1_X 100
  14 #define DONE1_Y 100
  15 #define DONE2_X 100
  16 #define DONE2_Y 130
  17
  18
  19 void setup_linux_params(long bootimg_dest, UINT32 initrd,UINT32 initrdl, long dram_size, const char *cmdline, char*base)
  20 {
  21         int rootdev = 0x00ff;
  22         struct tag *tag;
  23         int newcmdlinelen = 0;
  24         char *newcmdline = NULL;
  25
  26
  27         tag = (struct tag *)(base+0x100);
  28
  29         tag->hdr.tag = ATAG_CORE;
  30         tag->hdr.size = tag_size(tag_core);
  31         tag->u.core.flags =0;
  32         tag->u.core.pagesize = 0x00001000;
  33         tag->u.core.rootdev = rootdev;
  34         tag = tag_next(tag);
  35
  36         // now the cmdline tag
  37         tag->hdr.tag = ATAG_CMDLINE;
  38         // must be at least +3!! 1 for the null and 2 for the ???
  39         tag->hdr.size = (strlen(cmdline) + 3 + sizeof(struct tag_header)) >> 2;
  40         //tag->hdr.size = (strlen(cmdline) + 10 + sizeof(struct tag_header)) >> 2;
  41         strcpy(tag->u.cmdline.cmdline,cmdline);
  42         tag = tag_next(tag);
  43
  44
  45         // now the mem32 tag
  46         tag->hdr.tag = ATAG_MEM;
  47         tag->hdr.size = tag_size(tag_mem32);
  48         tag->u.mem.size = dram_size;
  49         tag->u.mem.start = MEM_START;
  50         tag = tag_next(tag);
  51
  52
  53         /* and now the initrd tag */
  54         if (initrdl) {
  55                 tag->hdr.tag = INITRD_TAG;
  56                 tag->hdr.size = tag_size(tag_initrd);
  57                 tag->u.initrd.start = initrd;
  58                 tag->u.initrd.size = initrdl;
  59                 tag = tag_next(tag);
  60         }
  61
  62         tag->hdr.tag = ATAG_VIDEOTEXT;
  63         tag->hdr.size = tag_size(tag_videotext);
  64         tag->u.videotext.video_lines = 40;
  65         tag->u.videotext.video_cols = 30;
  66         tag = tag_next(tag);
  67
  68         // now the NULL tag
  69         tag->hdr.tag = ATAG_NONE;
  70         tag->hdr.size = 0;
  71 }
  72
  73
  74
  75
  76
  77 /* loading process:
  78 function do_it is loaded onto address KERNELCOPY along with parameters(offset=0x100) and
  79 kernel image(offset=0x8000). Afterwards DRAMloader is called; it disables MMU and
  80 jumps onto KERNELCOPY. Function do_it then copies kernel image to its proper address(0xA0008000)
  81 and calls it.
  82 Initrd is loaded onto address INITRD and the address is passed to kernel via ATAG
  83 */
  84
  85
  86 // This resets some devices
  87 void ResetDevices()
  88 {
  89 #ifndef STRONGARM
  90         WritePhysical(0x4050000C,0); // Reset AC97
  91         WritePhysical(0x48000014,0); // Reset PCMCIA
  92         for(int i=0;i<0x3C;i+=4)
  93                 WritePhysical(0x40000000,8); // Set DMAs to Stop state
  94         WritePhysical(0x400000F0,0); // DMA do not gen interrupt
  95         SetGPIOio(28,0);                        // AC97
  96         SetGPIOio(29,0);                        // AC97/I2S
  97         SetGPIOio(30,0);                        // I2S/AC97
  98         SetGPIOio(31,0);                        // I2S/AC97
  99         SetGPIOio(32,0);                        // AC97/I2S
 100         SetGPIOalt(28,0);
 101         SetGPIOalt(29,0);
 102         SetGPIOalt(30,0);
 103         SetGPIOalt(31,0);
 104         SetGPIOalt(32,0);
 105 #endif
 106 }
 107
 108
 109
 110
 111 void mymemcpy(char* a, char* b, int size);
 112
 113 void boot_linux(char *filename,char* initrd,char *param)
 114 {
 115         FILE *fd=fopen(filename,"rb");
 116         int ret;
 117
 118         FILE* fd1;
 119
 120         long initrdl;
 121         long len;
 122
 123 #ifndef STRONGARM
 124         Image image;
 125         Image image_done;
 126 #endif
 127
 128
 129
 130         if(!fd)
 131         {
 132                 FILE *logfd=fopen("\\bootlog.txt","a");
 133                 fprintf(logfd, "Booting: ***FAILED TO OPEN %s***\n",filename);
 134                 fclose(logfd);
 135                 return;
 136         }
 137
 138         fseek(fd,0,SEEK_END);
 139         len=ftell(fd);
 140         fseek(fd,0,SEEK_SET);
 141
 142         fd1=fopen(initrd,"rb");
 143         initrdl=0;
 144         if(fd1)
 145         {
 146                 fseek(fd1,0,SEEK_END);
 147                 initrdl=ftell(fd1);
 148                 fseek(fd1,0,SEEK_SET);
 149         }
 150         FILE *logfd=fopen("\\bootlog.txt","a");
 151         fprintf(logfd, "Booting: Images.");
 152         fclose(logfd);
 153
 154
 155 #ifndef STRONGARM
 156         /* i haven't ported this to strongarm, hope this is not important to
 157          * anyone */
 158         init_fb();
 159         try_fb();
 160
 161         image=ReadBMP(BOOT_LOGO_PATH);
 162         if (!image.p) image=ReadBMP(BOOT_LOGO_PATH_CF);
 163         image_done=ReadBMP(BOOT_LOGO_DONE_PATH);
 164         if (!image_done.p) image_done = ReadBMP(BOOT_LOGO_DONE_PATH_CF);
 165         if (image.p) ShowImage(image.p,image.x,image.y);
 166 #endif
 167
 168         logfd=fopen("\\bootlog.txt","a");
 169         fprintf(logfd, "Booting: entering supervisor mode.");
 170         fclose(logfd);
 171
 172         /* now becoming supervisor. */
 173         SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL);
 174 //      CeSetThreadQuantum(GetCurrentThread(),0);
 175         SetKMode(1);
 176         SetProcPermissions(0xffffffff);
 177         /* <ibot> rooooooooot has landed! */
 178
 179         logfd=fopen("\\bootlog.txt","a");
 180         fprintf(logfd, "Booting: supervisor mode.");
 181         fclose(logfd);
 182
 183         void *mmu=(void*)read_mmu();
 184         UINT32 *data=NULL,*lcd=NULL,*intr=NULL,*_mmu=NULL;
 185         char *watch=NULL,*krnl=NULL;
 186
 187
 188         IntOff();
 189
 190
 191         char *kernel_copy2=(char*)VirtualAlloc((void*)0x0,0x8000+len, MEM_RESERVE|MEM_TOP_DOWN,PAGE_READWRITE);
 192         ret=VirtualCopy((void*)kernel_copy2,(void *) (KERNELCOPY/256),  0x8000+len, PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
 193
 194         char *initrd_copy2;
 195
 196
 197         if(fd1)
 198         {
 199                 initrd_copy2=(char*)VirtualAlloc((void*)0x0,initrdl, MEM_RESERVE|MEM_TOP_DOWN,PAGE_READWRITE);
 200                 ret=VirtualCopy((void*)initrd_copy2,(void *) (INITRD/256),      initrdl, PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
 201         }
 202
 203         void(*relmemcpy)(char*,char*,int);
 204         relmemcpy=(void (__cdecl *)(char *,char *,int))VirtualAlloc((void*)0x0, 1024, MEM_RESERVE|MEM_TOP_DOWN,PAGE_READWRITE);
 205
 206         /* ask joshua */
 207 #ifndef STRONGARM
 208         ret=VirtualCopy((void*)relmemcpy,(void *) (0xa0001000/256),     1024, PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
 209 #else
 210         ret=VirtualCopy((void*)relmemcpy,(void *) (0xc0001000/256),     1024, PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
 211 #endif
 212
 213         if(!kernel_copy2) return;
 214
 215
 216         UINT32 phys_addr;
 217         phys_addr=KERNELCOPY;
 218
 219
 220         char *data1,*data2;
 221
 222         data1=(char*)malloc(len);
 223
 224         char *initrd1=NULL;
 225
 226         if(fd1) initrd1=(char*)malloc(initrdl);
 227
 228         if(!data1) return;
 229
 230         if(!ret) return;
 231
 232         data2= (char*)do_it;
 233
 234
 235         fread(data1,len,1,fd);
 236         fclose(fd);
 237
 238
 239         if(fd1)
 240         {
 241                 fread(initrd1,initrdl,1,fd1);
 242                 fclose(fd1);
 243         }
 244
 245         // Do not block interrupts before they are needed anymore
 246         // Like reading the SD card.
 247         intr=(UINT32*)VirtualAlloc((void*)0x0,0x100, MEM_RESERVE,PAGE_READWRITE);
 248
 249         // Interrupt control registers
 250         ret=VirtualCopy((void*)intr,(void *) (ICIP/256), 0x100, PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
 251
 252         intr[1]=0;
 253
 254 //      ResetDevices();
 255
 256         UART_puts("LinExec: Passing the point of no return.. Now.\r\n");
 257
 258         UINT32  crc=0;
 259
 260         setup_linux_params(BOOTIMG, INITRD,initrdl, MEM_SIZE*1024*1024 , param,kernel_copy2);
 261
 262         memcpy(relmemcpy,mymemcpy,1024);
 263         relmemcpy(kernel_copy2,data2,0x100);
 264
 265         if(fd1)
 266                 relmemcpy(initrd_copy2,initrd1,initrdl);
 267
 268         relmemcpy(kernel_copy2+0x8000,data1,len);
 269
 270         UART_puts("LinExec: Entering DRAMloader...\r\n");
 271
 272         DRAMloader(phys_addr, MACH_TYPE);
 273 }
 274
 275 void mymemcpy(char* a, char* b, int size)
 276 {
 277         while (size)
 278         {
 279                 *a=*b;
 280                 size--;
 281                 a++; b++;
 282         };
 283 };
 284
 285 /*
 286         Loads parameters from file given.
 287         The file has to be:
 288         kernel image
 289         initrd
 290         kernel cmdline
 291 */
 292
 293 void load_boot(char *ParamFile)
 294 {
 295         FILE *stream;
 296
 297         UART_setup();
 298
 299         stream=fopen(ParamFile,"r");
 300         if(!stream) {
 301                 FILE *logfd=fopen("\\bootlog.txt","a");
 302                 fprintf(logfd, "Booting: ***FAILED TO OPEN %s***\n",ParamFile);
 303                 fclose(logfd);
 304                 return;
 305         }
 306         char cmd[200],image[50],initrd[50];
 307
 308         fgets(image,50,stream);
 309         image[strlen(image)-1]=0; // remove \n from the end
 310
 311         fgets(initrd,50,stream);
 312         initrd[strlen(initrd)-1]=0;
 313
 314         fgets(cmd,200,stream);
 315         cmd[strlen(cmd)-1]=0;
 316
 317         fclose(stream);
 318
 319         UART_puts("LinExec: Beginning boot_linux.\r\n");
 320         boot_linux(image,initrd,cmd);
 321 }