patch-2.0.21-2.1.0 linux/arch/m68k/boot/amiga/bootstrap.c
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- Lines: 1049
- Date:
Wed Sep 25 10:47:38 1996
- Orig file:
lx2.0/v2.0.21/linux/arch/m68k/boot/amiga/bootstrap.c
- Orig date:
Mon May 20 07:54:26 1996
diff -u --recursive --new-file lx2.0/v2.0.21/linux/arch/m68k/boot/amiga/bootstrap.c linux/arch/m68k/boot/amiga/bootstrap.c
@@ -1,18 +1,26 @@
/*
-** bootstrap.c -- This program loads the Linux/68k kernel into an Amiga
-** and and launches it.
+** linux/arch/m68k/boot/amiga/bootstrap.c -- This program loads the Linux/m68k
+** kernel into an Amiga and launches
+** it.
**
** Copyright 1993,1994 by Hamish Macdonald, Greg Harp
**
** Modified 11-May-94 by Geert Uytterhoeven
-** (Geert.Uytterhoeven@cs.kuleuven.ac.be)
+** (Geert.Uytterhoeven@cs.kuleuven.ac.be)
** - A3640 MapROM check
** Modified 31-May-94 by Geert Uytterhoeven
** - Memory thrash problem solved
** Modified 07-March-95 by Geert Uytterhoeven
** - Memory block sizes are rounded to a multiple of 256K instead of 1M
-** This _requires_ >0.9pl5 to work!
-** (unless all block sizes are multiples of 1M :-)
+** This _requires_ >0.9pl5 to work!
+** (unless all block sizes are multiples of 1M :-)
+** Modified 11-July-95 by Andreas Schwab
+** - Support for ELF kernel (untested!)
+** Modified 10-Jan-96 by Geert Uytterhoeven
+** - The real Linux/m68k boot code moved to linuxboot.[ch]
+** Modified 9-Sep-96 by Geert Uytterhoeven
+** - Rewritten option parsing
+** - New parameter passing to linuxboot() (linuxboot_args)
**
** This file is subject to the terms and conditions of the GNU General Public
** License. See the file COPYING in the main directory of this archive
@@ -23,760 +31,303 @@
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
+#include <stdarg.h>
#include <string.h>
#include <sys/file.h>
#include <sys/types.h>
#include <unistd.h>
-/* Amiga bootstrap include file */
-#include "bootstrap.h"
-
-/* required Linux/68k include files */
+/* required Linux/m68k include files */
#include <linux/a.out.h>
-#include <asm/bootinfo.h>
-
-/* temporary stack size */
-#define TEMP_STACKSIZE 256
-
-/* Exec Base */
-extern struct ExecBase *SysBase;
-
-extern char *optarg;
-
-struct exec kexec;
-char *memptr;
-u_long start_mem;
-u_long mem_size;
-u_long rd_size;
-
-struct ExpansionBase *ExpansionBase;
-struct GfxBase *GfxBase;
-
-struct bootinfo bi;
-u_long bi_size = sizeof bi;
-
-caddr_t CustomBase = (caddr_t)CUSTOM_PHYSADDR;
-
-void usage(void)
-{
- fprintf (stderr, "Usage:\n"
- "\tbootstrap [-d] [-k kernel_executable] [-r ramdisk_file]"
- " [option...]\n");
- exit (EXIT_FAILURE);
-}
-
-/*
- * This assembler code is copied to chip ram, and
- * then executed.
- * It copies the kernel (and ramdisk) to their
- * final resting place.
- */
-#ifndef __GNUC__
-#error GNU CC is required to compile the bootstrap program
-#endif
-asm("
-.text
-.globl _copyall, _copyallend
-_copyall:
- | /* put variables in registers because they may */
- lea _kexec,a3 | /* be overwritten by kernel/ramdisk copy!! - G.U. */
- movel _memptr,a4
- movel _start_mem,a5
- movel _mem_size,d0
- movel _rd_size,d1
- movel _bi_size,d5
- movel a3@(4),d2 | kexec.a_text
- movel a3@(8),d3 | kexec.a_data
- movel a3@(12),d4 | kexec.a_bss
-
- | /* copy kernel text and data */
- movel a4,a0 | src = (u_long *)memptr;
- movel a0,a2 | limit = (u_long *)(memptr + kexec.a_text + kexec.a_data);
- addl d2,a2
- addl d3,a2
- movel a5,a1 | dest = (u_long *)start_mem;
-1: cmpl a0,a2
- beqs 2f | while (src < limit)
- moveb a0@+,a1@+ | *dest++ = *src++;
- bras 1b
-2:
-
- | /* clear kernel bss */
- movel a1,a0 | dest = (u_long *)(start_mem + kexec.a_text + kexec.a_data);
- movel a1,a2 | limit = dest + kexec.a_bss / sizeof(u_long);
- addl d4,a2
-1: cmpl a0,a2
- beqs 2f | while (dest < limit)
- clrb a0@+ | *dest++ = 0;
- bras 1b
-2:
-
- | /* copy bootinfo to end of bss */
- movel a4,a1 | src = (u long *)memptr + kexec.a_text + kexec.a_data);
- addl d2,a1
- addl d3,a1 | dest = end of bss (already in a0)
- movel d5,d7 | count = sizeof bi
- subql #1,d7
-1: moveb a1@+,a0@+ | while (--count > -1)
- dbra d7,1b | *dest++ = *src++
-
-
- | /* copy the ramdisk to the top of memory (from back to front) */
- movel a5,a1 | dest = (u_long *)(start_mem + mem_size);
- addl d0,a1
- movel a4,a2 | limit = (u_long *)(memptr + kexec.a_text + kexec.a_data + sizeof bi);
- addl d2,a2
- addl d3,a2
- addl d5,a2
- movel a2,a0 | src = (u_long *)((u_long)limit + rd_size);
- addl d1,a0
-1: cmpl a0,a2
- beqs 2f | while (src > limit)
- moveb a0@-,a1@- | *--dest = *--src;
- bras 1b
-2:
- | /* jump to start of kernel */
- movel a5,a0 | jump_to (START_MEM);
- jsr a0@
-_copyallend:
-");
-
-asm("
-.text
-.globl _maprommed
-_maprommed:
- oriw #0x0700,sr
- moveml #0x3f20,sp@-
-/* Save cache settings */
- .long 0x4e7a1002 /* movec cacr,d1 */
-/* Save MMU settings */
- .long 0x4e7a2003 /* movec tc,d2 */
- .long 0x4e7a3004 /* movec itt0,d3 */
- .long 0x4e7a4005 /* movec itt1,d4 */
- .long 0x4e7a5006 /* movec dtt0,d5 */
- .long 0x4e7a6007 /* movec dtt1,d6 */
- moveq #0,d0
- movel d0,a2
-/* Disable caches */
- .long 0x4e7b0002 /* movec d0,cacr */
-/* Disable MMU */
- .long 0x4e7b0003 /* movec d0,tc */
- .long 0x4e7b0004 /* movec d0,itt0 */
- .long 0x4e7b0005 /* movec d0,itt1 */
- .long 0x4e7b0006 /* movec d0,dtt0 */
- .long 0x4e7b0007 /* movec d0,dtt1 */
- lea 0x07f80000,a0
- lea 0x00f80000,a1
- movel a0@,d7
- cmpl a1@,d7
- jnes 1f
- movel d7,d0
- notl d0
- movel d0,a0@
- nop
- cmpl a1@,d0
- jnes 1f
-/* MapROMmed A3640 present */
- moveq #-1,d0
- movel d0,a2
-1: movel d7,a0@
-/* Restore MMU settings */
- .long 0x4e7b2003 /* movec d2,tc */
- .long 0x4e7b3004 /* movec d3,itt0 */
- .long 0x4e7b4005 /* movec d4,itt1 */
- .long 0x4e7b5006 /* movec d5,dtt0 */
- .long 0x4e7b6007 /* movec d6,dtt1 */
-/* Restore cache settings */
- .long 0x4e7b1002 /* movec d1,cacr */
- movel a2,d0
- moveml sp@+,#0x04fc
- rte
-");
-
-extern unsigned long maprommed();
+#include <linux/elf.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+/* Amiga bootstrap include files */
+#include "linuxboot.h"
+#include "bootstrap.h"
-extern char copyall, copyallend;
-
-int main(int argc, char *argv[])
-{
- int ch, debugflag = 0, kfd, rfd = -1, i;
- long fast_total = 0; /* total Fast RAM in system */
- struct MemHeader *mnp;
- struct ConfigDev *cdp = NULL;
- char *kernel_name = "vmlinux";
- char *ramdisk_name = NULL;
- char *memfile = NULL;
- u_long memreq;
- void (*startfunc)(void);
- long startcodesize;
- u_long *stack, text_offset;
- unsigned char *rb3_reg = NULL, *piccolo_reg = NULL, *sd64_reg = NULL;
-
- /* print the greet message */
- puts(" Linux/68k Amiga Bootstrap version 1.11");
- puts("Copyright 1993,1994 by Hamish Macdonald and Greg Harp\n");
-
- /* machine is Amiga */
- bi.machtype = MACH_AMIGA;
-
- /* check arguments */
- while ((ch = getopt(argc, argv, "dk:r:m:")) != EOF)
- switch (ch) {
- case 'd':
- debugflag = 1;
- break;
- case 'k':
- kernel_name = optarg;
- break;
- case 'r':
- ramdisk_name = optarg;
- break;
- case 'm':
- memfile = optarg;
- break;
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- SysBase = *(struct ExecBase **)4;
-
- /* Memory & AutoConfig based on 'unix_boot.c' by C= */
-
- /* open Expansion Library */
- ExpansionBase = (struct ExpansionBase *)OpenLibrary("expansion.library", 36);
- if (!ExpansionBase) {
- puts("Unable to open expansion.library V36 or greater! Aborting...");
- exit(EXIT_FAILURE);
- }
-
- /* find all of the autoconfig boards in the system */
- cdp = (struct ConfigDev *)FindConfigDev(cdp, -1, -1);
- for (i=0; (i < NUM_AUTO) && cdp; i++) {
- /* copy the contents of each structure into our boot info */
- memcpy(&bi.bi_amiga.autocon[i], cdp, sizeof(struct ConfigDev));
- /* count this device */
- bi.bi_amiga.num_autocon++;
+/* Library Bases */
+extern const struct ExecBase *SysBase;
+const struct ExpansionBase *ExpansionBase;
+const struct GfxBase *GfxBase;
- /* get next device */
- cdp = (struct ConfigDev *)FindConfigDev(cdp, -1, -1);
- }
+static const char *memfile_name = NULL;
- /* find out the memory in the system */
- for (mnp = (struct MemHeader *)SysBase->MemList.l_head;
- (bi.num_memory < NUM_MEMINFO) && mnp->mh_Node.ln_Succ;
- mnp = (struct MemHeader *)mnp->mh_Node.ln_Succ)
- {
- struct MemHeader mh;
-
- /* copy the information */
- mh = *mnp;
-
- /* if we suspect that Kickstart is shadowed in an A3000,
- modify the entry to show 512K more at the top of RAM
- Check first for a MapROMmed A3640 board: overwriting the
- Kickstart image causes an infinite lock-up on reboot! */
-
- if (mh.mh_Upper == (void *)0x07f80000)
- if ((SysBase->AttnFlags & AFF_68040) && Supervisor(maprommed))
- printf("A3640 MapROM detected.\n");
- else {
- mh.mh_Upper = (void *)0x08000000;
- printf("A3000 shadowed Kickstart detected.\n");
- }
-
- /* if we suspect that Kickstart is zkicked,
- modify the entry to show 512K more at the bottom of RAM */
- if (mh.mh_Lower == (void *)0x00280020) {
- mh.mh_Lower = (void *)0x00200000;
- printf("ZKick detected.\n");
- }
-
- /*
- * If this machine has "LOCAL" memory between 0x07000000
- * and 0x080000000, then we'll call it an A3000.
- */
- if (mh.mh_Lower >= (void *)0x07000000 &&
- mh.mh_Lower < (void *)0x08000000 &&
- (mh.mh_Attributes & MEMF_LOCAL))
- bi.bi_amiga.model = AMI_3000;
-
- /* mask the memory limit values */
- mh.mh_Upper = (void *)((u_long)mh.mh_Upper & 0xfffff000);
- mh.mh_Lower = (void *)((u_long)mh.mh_Lower & 0xfffff000);
-
- /* if fast memory */
- if (mh.mh_Attributes & MEMF_FAST) {
- unsigned long size;
-
- /* record the start */
- bi.memory[bi.num_memory].addr = (u_long)mh.mh_Lower;
-
- /* set the size value to the size of this block */
- size = (u_long)mh.mh_Upper - (u_long)mh.mh_Lower;
-
- /* mask off to a 256K increment */
- size &= 0xfffc0000;
-
- fast_total += size;
-
- if (size > 0)
- /* count this block */
- bi.memory[bi.num_memory++].size = size;
-
- } else if (mh.mh_Attributes & MEMF_CHIP) {
- /* if CHIP memory, record the size */
- bi.bi_amiga.chip_size =
- (u_long)mh.mh_Upper; /* - (u_long)mh.mh_Lower; */
- }
- }
+static int model = AMI_UNKNOWN;
- CloseLibrary((struct Library *)ExpansionBase);
+static const char *ProgramName;
- /*
- * if we have a memory file, read the memory information from it
- */
- if (memfile) {
- FILE *fp;
- int i;
-
- if ((fp = fopen (memfile, "r")) == NULL) {
- perror ("open memory file");
- fprintf (stderr, "Cannot open memory file %s\n", memfile);
- exit (EXIT_FAILURE);
- }
+struct linuxboot_args args;
- if (fscanf (fp, "%lu", &bi.bi_amiga.chip_size) != 1) {
- fprintf (stderr, "memory file does not contain chip memory size\n");
- fclose (fp);
- exit (EXIT_FAILURE);
- }
-
- for (i = 0; i < NUM_MEMINFO; i++) {
- if (fscanf (fp, "%lx %lu", &bi.memory[i].addr,
- &bi.memory[i].size) != 2)
- break;
- }
- fclose (fp);
+ /*
+ * Function Prototypes
+ */
- if (i != bi.num_memory && i > 0)
- bi.num_memory = i;
- }
+static void Usage(void) __attribute__ ((noreturn));
+int main(int argc, char *argv[]);
+static void Puts(const char *str);
+static long GetChar(void);
+static void PutChar(char c);
+static void Printf(const char *fmt, ...);
+static int Open(const char *path);
+static int Seek(int fd, int offset);
+static int Read(int fd, char *buf, int count);
+static void Close(int fd);
+static int FileSize(const char *path);
+static void Sleep(u_long micros);
+static int ModifyBootinfo(struct bootinfo *bi);
- /* get info from ExecBase */
- bi.bi_amiga.vblank = SysBase->VBlankFrequency;
- bi.bi_amiga.psfreq = SysBase->PowerSupplyFrequency;
- bi.bi_amiga.eclock = SysBase->EClockFrequency;
-
- /* open graphics library */
- GfxBase = (struct GfxBase *)OpenLibrary ("graphics.library", 0);
-
- /* determine chipset */
- bi.bi_amiga.chipset = CS_STONEAGE;
- if(GfxBase)
- {
- if(GfxBase->ChipRevBits0 & GFXG_AGA)
- {
- bi.bi_amiga.chipset = CS_AGA;
- /*
- * we considered this machine to be an A3000 because of its
- * local memory just beneath $8000000; now if it has AGA, it
- * must be an A4000
- * except the case no RAM is installed on the motherboard but
- * on an additional card like FastLane Z3 or on the processor
- * board itself. Gotta check this out.
- */
- bi.bi_amiga.model =
- (bi.bi_amiga.model == AMI_3000) ? AMI_4000 : AMI_1200;
- }
- else if(GfxBase->ChipRevBits0 & GFXG_ECS)
- bi.bi_amiga.chipset = CS_ECS;
- else if(GfxBase->ChipRevBits0 & GFXG_OCS)
- bi.bi_amiga.chipset = CS_OCS;
- }
- /* Display amiga model */
- switch (bi.bi_amiga.model) {
- case AMI_UNKNOWN:
- break;
- case AMI_500:
- printf ("Amiga 500 ");
- break;
- case AMI_2000:
- printf ("Amiga 2000 ");
- break;
- case AMI_3000:
- printf ("Amiga 3000 ");
- break;
- case AMI_4000:
- printf ("Amiga 4000 ");
- break;
- case AMI_1200: /* this implies an upgraded model */
- printf ("Amiga 1200 "); /* equipped with at least 68030 !!! */
- break;
- }
-
- /* display and set the CPU <type */
- printf("CPU: ");
- if (SysBase->AttnFlags & AFF_68040) {
- printf("68040");
- bi.cputype = CPU_68040;
- if (SysBase->AttnFlags & AFF_FPU40) {
- printf(" with internal FPU");
- bi.cputype |= FPU_68040;
- } else
- printf(" without FPU");
- } else {
- if (SysBase->AttnFlags & AFF_68030) {
- printf("68030");
- bi.cputype = CPU_68030;
- } else if (SysBase->AttnFlags & AFF_68020) {
- printf("68020 (Do you have an MMU?)");
- bi.cputype = CPU_68020;
- } else {
- puts("Insufficient for Linux. Aborting...");
- printf("SysBase->AttnFlags = %#x\n", SysBase->AttnFlags);
- exit (EXIT_FAILURE);
- }
- if (SysBase->AttnFlags & AFF_68882) {
- printf(" with 68882 FPU");
- bi.cputype |= FPU_68882;
- } else if (SysBase->AttnFlags & AFF_68881) {
- printf(" with 68881 FPU");
- bi.cputype |= FPU_68881;
- } else
- printf(" without FPU");
- }
-
- switch(bi.bi_amiga.chipset)
- {
- case CS_STONEAGE:
- printf(", old or unknown chipset");
- break;
- case CS_OCS:
- printf(", OCS");
- break;
- case CS_ECS:
- printf(", ECS");
- break;
- case CS_AGA:
- printf(", AGA chipset");
- break;
- }
-
- putchar ('\n');
- putchar ('\n');
-
- /*
- * Copy command line options into the kernel command line.
- */
- i = 0;
- while (argc--) {
- if ((i+strlen(*argv)+1) < CL_SIZE) {
- i += strlen(*argv) + 1;
- if (bi.command_line[0])
- strcat (bi.command_line, " ");
- strcat (bi.command_line, *argv++);
- }
- }
- printf ("Command line is '%s'\n", bi.command_line);
-
- /* display the clock statistics */
- printf("Vertical Blank Frequency: %dHz\nPower Supply Frequency: %dHz\n",
- bi.bi_amiga.vblank, bi.bi_amiga.psfreq);
- printf("EClock Frequency: %7.5fKHz\n\n",
- (float)bi.bi_amiga.eclock / 1000);
-
- /* display autoconfig devices */
- if (bi.bi_amiga.num_autocon) {
- printf("Found %d AutoConfig Device%s", bi.bi_amiga.num_autocon,
- (bi.bi_amiga.num_autocon > 1)?"s\n":"\n");
- for (i=0; i<bi.bi_amiga.num_autocon; i++)
- {
- printf("Device %d: addr = %08lx\n", i,
- (u_long)bi.bi_amiga.autocon[i].cd_BoardAddr);
- /* check for a Rainbow 3 and prepare to reset it if there is one */
- if ( (bi.bi_amiga.autocon[i].cd_Rom.er_Manufacturer == MANUF_HELFRICH1) &&
- (bi.bi_amiga.autocon[i].cd_Rom.er_Product == PROD_RAINBOW3) )
- {
- printf("(Found a Rainbow 3 board - will reset it at kernel boot time)\n");
- rb3_reg = (unsigned char *)(bi.bi_amiga.autocon[i].cd_BoardAddr + 0x01002000);
- }
-
- /* check for a Piccolo and prepare to reset it if there is one */
- if ( (bi.bi_amiga.autocon[i].cd_Rom.er_Manufacturer == MANUF_HELFRICH2) &&
- (bi.bi_amiga.autocon[i].cd_Rom.er_Product == PROD_PICCOLO_REG) )
- {
- printf("(Found a Piccolo board - will reset it at kernel boot time)\n");
- piccolo_reg = (unsigned char *)(bi.bi_amiga.autocon[i].cd_BoardAddr + 0x8000);
- }
-
- /* check for a SD64 and prepare to reset it if there is one */
- if ( (bi.bi_amiga.autocon[i].cd_Rom.er_Manufacturer == MANUF_HELFRICH2) &&
- (bi.bi_amiga.autocon[i].cd_Rom.er_Product == PROD_SD64_REG) )
- {
- printf("(Found a SD64 board - will reset it at kernel boot time)\n");
- sd64_reg = (unsigned char *)(bi.bi_amiga.autocon[i].cd_BoardAddr + 0x8000);
- }
-
- /* what this code lacks - what if there are several boards of */
- /* the same brand ? In that case I should reset them one after */
- /* the other, which is currently not done - a rare case...FN */
- /* ok, MY amiga currently hosts all three of the above boards ;-) */
- }
- } else
- puts("No AutoConfig Devices Found");
-
- /* display memory */
- if (bi.num_memory) {
- printf("\n%d Block%sof Memory Found\n", bi.num_memory,
- (bi.num_memory > 1)?"s ":" ");
- for (i=0; i<bi.num_memory; i++) {
- printf("Block %d: %08lx to %08lx (%ldKB)\n",
- i, bi.memory[i].addr,
- bi.memory[i].addr + bi.memory[i].size,
- bi.memory[i].size >> 10);
- }
- } else {
- puts("No memory found?! Aborting...");
- exit(10);
- }
+static void Usage(void)
+{
+ fprintf(stderr,
+ "Linux/m68k Amiga Bootstrap version " AMIBOOT_VERSION "\n\n"
+ "Usage: %s [options] [kernel command line]\n\n"
+ "Valid options are:\n"
+ " -h, --help Display this usage information\n"
+ " -k, --kernel file Use kernel image `file' (default is `vmlinux')\n"
+ " -r, --ramdisk file Use ramdisk image `file'\n"
+ " -d, --debug Enable debug mode\n"
+ " -m, --memfile file Use memory file `file'\n"
+ " -v, --keep-video Don't reset the video mode\n"
+ " -t, --model id Set the Amiga model to `id'\n\n",
+ ProgramName);
+ exit(EXIT_FAILURE);
+}
- /* display chip memory size */
- printf ("%ldK of CHIP memory\n", bi.bi_amiga.chip_size >> 10);
- start_mem = bi.memory[0].addr;
- mem_size = bi.memory[0].size;
+int main(int argc, char *argv[])
+{
+ int i;
+ int debugflag = 0, keep_video = 0;
+ const char *kernel_name = NULL;
+ const char *ramdisk_name = NULL;
+ char commandline[CL_SIZE] = "";
+
+ ProgramName = argv[0];
+ while (--argc) {
+ argv++;
+ if (!strcmp(argv[0], "-h") || !strcmp(argv[0], "--help"))
+ Usage();
+ else if (!strcmp(argv[0], "-k") || !strcmp(argv[0], "--kernel"))
+ if (--argc && !kernel_name) {
+ kernel_name = argv[1];
+ argv++;
+ } else
+ Usage();
+ else if (!strcmp(argv[0], "-r") || !strcmp(argv[0], "--ramdisk"))
+ if (--argc && !ramdisk_name) {
+ ramdisk_name = argv[1];
+ argv++;
+ } else
+ Usage();
+ else if (!strcmp(argv[0], "-d") || !strcmp(argv[0], "--debug"))
+ debugflag = 1;
+ else if (!strcmp(argv[0], "-m") || !strcmp(argv[0], "--memfile"))
+ if (--argc && !memfile_name) {
+ memfile_name = argv[1];
+ argv++;
+ } else
+ Usage();
+ else if (!strcmp(argv[0], "-v") || !strcmp(argv[0], "--keep-video"))
+ keep_video = 1;
+ else if (!strcmp(argv[0], "-t") || !strcmp(argv[0], "--model"))
+ if (--argc && !model) {
+ model = atoi(argv[1]);
+ argv++;
+ } else
+ Usage();
+ else
+ break;
+ }
+ if (!kernel_name)
+ kernel_name = "vmlinux";
+
+ SysBase = *(struct ExecBase **)4;
+
+ /* open Expansion Library */
+ ExpansionBase = (struct ExpansionBase *)OpenLibrary("expansion.library",
+ 36);
+ if (!ExpansionBase) {
+ fputs("Unable to open expansion.library V36 or greater! Aborting...\n",
+ stderr);
+ exit(EXIT_FAILURE);
+ }
+
+ /* open Graphics Library */
+ GfxBase = (struct GfxBase *)OpenLibrary ("graphics.library", 0);
+ if (!GfxBase) {
+ fputs("Unable to open graphics.library! Aborting...\n", stderr);
+ exit(EXIT_FAILURE);
+ }
+
+ /*
+ * Join command line options
+ */
+ i = 0;
+ while (argc--) {
+ if ((i+strlen(*argv)+1) < CL_SIZE) {
+ i += strlen(*argv) + 1;
+ if (commandline[0])
+ strcat(commandline, " ");
+ strcat(commandline, *argv++);
+ }
+ }
+
+ args.kernelname = kernel_name;
+ args.ramdiskname = ramdisk_name;
+ args.commandline = commandline;
+ args.debugflag = debugflag;
+ args.keep_video = keep_video;
+ args.reset_boards = 1;
+ args.puts = Puts;
+ args.getchar = GetChar;
+ args.putchar = PutChar;
+ args.printf = Printf;
+ args.open = Open;
+ args.seek = Seek;
+ args.read = Read;
+ args.close = Close;
+ args.filesize = FileSize;
+ args.sleep = Sleep;
+ args.modify_bootinfo = ModifyBootinfo;
- /* tell us where the kernel will go */
- printf("\nThe kernel will be located at %08lx\n", start_mem);
+ /* Do The Right Stuff */
+ linuxboot(&args);
- /* verify that there is enough Chip RAM */
- if (bi.bi_amiga.chip_size < 512*1024) {
- puts("\nNot enough Chip RAM in this system. Aborting...");
- exit(10);
- }
+ CloseLibrary((struct Library *)GfxBase);
+ CloseLibrary((struct Library *)ExpansionBase);
- /* verify that there is enough Fast RAM */
- if (fast_total < 2*1024*1024) {
- puts("\nNot enough Fast RAM in this system. Aborting...");
- exit(10);
- }
+ /* if we ever get here, something went wrong */
+ exit(EXIT_FAILURE);
+}
- /* open kernel executable and read exec header */
- if ((kfd = open (kernel_name, O_RDONLY)) == -1) {
- fprintf (stderr, "Unable to open kernel file %s\n", kernel_name);
- exit (EXIT_FAILURE);
- }
- if (read (kfd, (void *)&kexec, sizeof(kexec)) != sizeof(kexec)) {
- fprintf (stderr, "Unable to read exec header from %s\n",
- kernel_name);
- exit (EXIT_FAILURE);
- }
+ /*
+ * Routines needed by linuxboot
+ */
- switch (N_MAGIC(kexec)) {
- case ZMAGIC:
- text_offset = N_TXTOFF(kexec);
- break;
- case QMAGIC:
- text_offset = sizeof(kexec);
- /* the text size includes the exec header; remove this */
- kexec.a_text -= sizeof(kexec);
- break;
- default:
- fprintf (stderr, "Wrong magic number %lo in kernel header\n",
- N_MAGIC(kexec));
- exit (EXIT_FAILURE);
- }
+static void Puts(const char *str)
+{
+ fputs(str, stderr);
+}
- /* Load the kernel at one page after start of mem */
- start_mem += PAGE_SIZE;
- mem_size -= PAGE_SIZE;
- /* Align bss size to multiple of four */
- kexec.a_bss = (kexec.a_bss + 3) & ~3;
-
- if (ramdisk_name) {
- if ((rfd = open (ramdisk_name, O_RDONLY)) == -1) {
- fprintf (stderr, "Unable to open ramdisk file %s\n",
- ramdisk_name);
- exit (EXIT_FAILURE);
- }
- /* record ramdisk size */
- bi.ramdisk_size = (lseek (rfd, 0, L_XTND) + 1023) >> 10;
- } else
- bi.ramdisk_size = 0;
-
- rd_size = bi.ramdisk_size << 10;
- bi.ramdisk_addr = (u_long)start_mem + mem_size - rd_size;
-
- memreq = kexec.a_text + kexec.a_data + sizeof(bi) + rd_size;
- if (!(memptr = (char *)AllocMem (memreq, MEMF_FAST | MEMF_CLEAR))) {
- fprintf (stderr, "Unable to allocate memory\n");
- exit (EXIT_FAILURE);
- }
+static long GetChar(void)
+{
+ return(getchar());
+}
- if (lseek (kfd, text_offset, L_SET) == -1) {
- fprintf (stderr, "Failed to seek to text\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
- if (read (kfd, memptr, kexec.a_text) != kexec.a_text) {
- fprintf (stderr, "Failed to read text\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
+static void PutChar(char c)
+{
+ fputc(c, stderr);
+}
- /* data follows immediately after text */
- if (read (kfd, memptr + kexec.a_text, kexec.a_data) != kexec.a_data) {
- fprintf (stderr, "Failed to read data\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
- close (kfd);
+static void Printf(const char *fmt, ...)
+{
+ va_list args;
- /* copy the boot_info struct to the end of the kernel image */
- memcpy ((void *)(memptr + kexec.a_text + kexec.a_data), &bi,
- sizeof(bi));
-
- if (rfd != -1) {
- if (lseek (rfd, 0, L_SET) == -1) {
- fprintf (stderr, "Failed to seek to beginning of ramdisk file\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
- if (read (rfd, memptr + kexec.a_text + kexec.a_data
- + sizeof(bi), rd_size) != rd_size) {
- fprintf (stderr, "Failed to read ramdisk file\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
- close (rfd);
- }
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+}
- /* allocate temporary chip ram stack */
- stack = (u_long *)AllocMem( TEMP_STACKSIZE, MEMF_CHIP|MEMF_CLEAR);
- if (!stack) {
- fprintf (stderr, "Unable to allocate memory for stack\n");
- FreeMem ((void *)memptr, memreq);
- exit (EXIT_FAILURE);
- }
+static int Open(const char *path)
+{
+ return(open(path, O_RDONLY));
+}
- /* allocate chip ram for copy of startup code */
- startcodesize = ©allend - ©all;
- startfunc = (void (*)(void))AllocMem( startcodesize, MEMF_CHIP);
- if (!startfunc) {
- fprintf (stderr, "Unable to allocate memory for code\n");
- FreeMem ((void *)memptr, memreq);
- FreeMem ((void *)stack, TEMP_STACKSIZE);
- exit (EXIT_FAILURE);
- }
+static int Seek(int fd, int offset)
+{
+ return(lseek(fd, offset, SEEK_SET));
+}
- /* copy startup code to CHIP RAM */
- memcpy (startfunc, ©all, startcodesize);
- if (debugflag) {
- if (bi.ramdisk_size)
- printf ("RAM disk at %#lx, size is %ldK\n",
- (u_long)memptr + kexec.a_text + kexec.a_data,
- bi.ramdisk_size);
-
- printf ("\nKernel text at %#lx, code size %x\n",
- start_mem, kexec.a_text);
- printf ("Kernel data at %#lx, data size %x\n",
- start_mem + kexec.a_text, kexec.a_data );
- printf ("Kernel bss at %#lx, bss size %x\n",
- start_mem + kexec.a_text + kexec.a_data,
- kexec.a_bss );
- printf ("boot info at %#lx\n", start_mem + kexec.a_text
- + kexec.a_data + kexec.a_bss);
-
- printf ("\nKernel entry is %#x\n", kexec.a_entry );
-
- printf ("ramdisk dest top is %#lx\n", start_mem + mem_size);
- printf ("ramdisk lower limit is %#lx\n",
- (u_long)(memptr + kexec.a_text + kexec.a_data));
- printf ("ramdisk src top is %#lx\n",
- (u_long)(memptr + kexec.a_text + kexec.a_data)
- + rd_size);
-
- printf ("Type a key to continue the Linux boot...");
- fflush (stdout);
- getchar();
- }
+static int Read(int fd, char *buf, int count)
+{
+ return(read(fd, buf, count));
+}
- /* wait for things to settle down */
- sleep(2);
+static void Close(int fd)
+{
+ close(fd);
+}
- /* FN: If a Rainbow III board is present, reset it to disable */
- /* its (possibly activated) vertical blank interrupts as the */
- /* kernel is not yet prepared to handle them (level 6). */
- if (rb3_reg != NULL)
- {
- /* set RESET bit in special function register */
- *rb3_reg = 0x01;
- /* actually, only a few cycles delay are required... */
- sleep(1);
- /* clear reset bit */
- *rb3_reg = 0x00;
- }
+static int FileSize(const char *path)
+{
+ int fd, size = -1;
- /* the same stuff as above, for the Piccolo board. */
- /* this also has the side effect of resetting the board's */
- /* output selection logic to use the Amiga's display in single */
- /* monitor systems - which is currently what we want. */
- if (piccolo_reg != NULL)
- {
- /* set RESET bit in special function register */
- *piccolo_reg = 0x01;
- /* actually, only a few cycles delay are required... */
- sleep(1);
- /* clear reset bit */
- *piccolo_reg = 0x51;
- }
+ if ((fd = open(path, O_RDONLY)) != -1) {
+ size = lseek(fd, 0, SEEK_END);
+ close(fd);
+ }
+ return(size);
+}
- /* the same stuff as above, for the SD64 board. */
- /* just as on the Piccolo, this also resets the monitor switch */
- if (sd64_reg != NULL)
- {
- /* set RESET bit in special function register */
- *sd64_reg = 0x1f;
- /* actually, only a few cycles delay are required... */
- sleep(1);
- /* clear reset bit AND switch monitor bit (0x20) */
- *sd64_reg = 0x4f;
- }
+static void Sleep(u_long micros)
+{
+ struct MsgPort *TimerPort;
+ struct timerequest *TimerRequest;
- if (GfxBase) {
- /* set graphics mode to a nice normal one */
- LoadView (NULL);
- CloseLibrary ((struct Library *)GfxBase);
+ if ((TimerPort = CreateMsgPort())) {
+ if ((TimerRequest = CreateIORequest(TimerPort,
+ sizeof(struct timerequest)))) {
+ if (!OpenDevice("timer.device", UNIT_VBLANK,
+ (struct IORequest *)TimerRequest, 0)) {
+ TimerRequest->io_Command = TR_ADDREQUEST;
+ TimerRequest->io_Flags = IOF_QUICK;
+ TimerRequest->tv_secs = micros/1000000;
+ TimerRequest->tv_micro = micros%1000000;
+ DoIO((struct IORequest *)TimerRequest);
+ CloseDevice((struct IORequest *)TimerRequest);
+ }
+ DeleteIORequest(TimerRequest);
}
+ DeleteMsgPort(TimerPort);
+ }
+}
- Disable();
-
- /* Turn off all DMA */
- custom.dmacon = DMAF_ALL | DMAF_MASTER;
-
- /* turn off caches */
- CacheControl (0L, ~0L);
-
- /* Go into supervisor state */
- SuperState ();
-
- /* setup stack */
- change_stack ((char *) stack + TEMP_STACKSIZE);
-
- /* turn off any mmu translation */
- disable_mmu ();
- /* execute the copy-and-go code (from CHIP RAM) */
- startfunc();
+static int ModifyBootinfo(struct bootinfo *bi)
+{
+ /*
+ * if we have a memory file, read the memory information from it
+ */
+ if (memfile_name) {
+ FILE *fp;
+ int i;
+
+ if ((fp = fopen(memfile_name, "r")) == NULL) {
+ perror("open memory file");
+ fprintf(stderr, "Cannot open memory file %s\n", memfile_name);
+ return(FALSE);
+ }
+
+ if (fscanf(fp, "%lu", &bi->bi_amiga.chip_size) != 1) {
+ fprintf(stderr, "memory file does not contain chip memory size\n");
+ fclose(fp);
+ return(FALSE);
+ }
+
+ for (i = 0; i < NUM_MEMINFO; i++) {
+ if (fscanf(fp, "%lx %lu", &bi->memory[i].addr, &bi->memory[i].size)
+ != 2)
+ break;
+ }
+
+ fclose(fp);
+
+ if (i != bi->num_memory && i > 0)
+ bi->num_memory = i;
+ }
+
+ /*
+ * change the Amiga model, if necessary
+ */
+ if (model != AMI_UNKNOWN)
+ bi->bi_amiga.model = model;
- /* NOTREACHED */
+ return(TRUE);
}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov