mirror of
https://github.com/vivier/EMILE.git
synced 2024-08-02 06:29:14 +00:00
406 lines
9.2 KiB
C
406 lines
9.2 KiB
C
/*
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*
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* (c) 2004-2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
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*
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*/
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#define __NO_INLINE__
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include <unistd.h>
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#include <macos/types.h>
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#include <macos/gestalt.h>
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#include "bank.h"
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#include "memory.h"
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#if defined(ARCH_M68K)
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#if defined(__LINUX__)
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#include "bootinfo.h"
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#elif defined(__NETBSD__)
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#include "bootenv.h"
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#endif
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#endif
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#ifdef ARCH_PPC
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#include "bootx.h"
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#endif
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#include "arch.h"
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#include "misc.h"
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#include "load.h"
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#include "console.h"
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#include "vga.h"
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#include "driver.h"
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#if defined(USE_CLI) && defined(__LINUX__)
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#include "cli.h"
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#endif
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#include "enter_kernel.h"
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#ifdef ARCH_M68K
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#define KERNEL_ALIGN (256L * 1024L) // Kernel alignment, on 256K boundary
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#if defined(__LINUX__)
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#define BI_ALLOC_SIZE (4096L) // Allocate 4K for bootinfo
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#elif defined(__NETBSD__)
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#define BI_ALLOC_SIZE (4096L)
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#endif
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#endif
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static void banner(void)
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{
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printf("Early Macintosh Image LoadEr"
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#if defined(__LINUX__) && defined(__NETBSD__)
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#error Cannot support LINUX AND NETBSD
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#elif defined(__LINUX__)
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" for Linux"
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#elif defined(__NETBSD__)
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" for NetBSD"
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#endif
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#if defined(ARCH_M68K) && defined(ARCH_PPC)
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" (mixed mode)\n");
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#elif defined(ARCH_M68K)
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#ifdef USE_MMU
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" on Motorola 680x0\n");
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#else
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" on Motorola 68000\n");
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#endif /* USE_MMU */
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#elif defined(ARCH_PPC)
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" on PowerPC\n");
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#else
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" (unknown processor)\n");
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#endif
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printf("EMILE v"VERSION" (c) 2004,2005 Laurent Vivier\n");
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printf("This is free software, redistribute it under GPL\n");
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}
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int start(emile_l2_header_t* info)
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{
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char * kernel;
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#ifdef ARCH_M68K
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entry_t entry;
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unsigned long physImage;
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#ifdef USE_MMU
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unsigned long physical;
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#ifdef __LINUX__
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unsigned long aligned_size;
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unsigned long aligned_addr;
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#endif /* __LINUX__ */
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#endif /* USE_MMU */
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unsigned long start_mem;
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unsigned long entry_point;
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#endif /* ARCH_M68K */
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#ifdef ARCH_PPC
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PPCRegisterList regs;
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#endif
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int ret;
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unsigned long ramdisk_start;
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int bootstrap_size;
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banner();
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if (!EMILE_COMPAT(EMILE_05_SIGNATURE, info->signature))
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error("Bad header signature !\n");
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arch_init();
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init_memory_map();
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#ifdef BANK_DUMP
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bank_dump();
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#endif
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printf("Available Memory: %ld kB\n", bank_mem_avail() / 1024);
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if (info->gestaltID != 0) {
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machine_id = info->gestaltID;
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printf("User forces gestalt ID to %ld\n", machine_id);
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}
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/* where is mapped my boot function ? */
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enter_kernel_init();
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#ifdef ARCH_M68K
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if (arch_type == gestalt68k)
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{
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#if defined(__LINUX__)
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/* and BI_ALLOC_SIZE for bootinfo */
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bootstrap_size = BI_ALLOC_SIZE +
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end_enter_kernel - enter_kernel;
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#elif defined(__NETBSD__)
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bootstrap_size = BI_ALLOC_SIZE +
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end_enter_kernel - enter_kernel;
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#endif
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}
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#ifndef ARCH_PPC
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else
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error("EMILE doesn't support your architecture");
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#endif
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#endif
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/* load kernel */
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if (info->kernel_image_size == 0)
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error("Kernel is missing !!!!\n");
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#if defined(USE_CLI) && defined(__LINUX__)
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printf("Parameters: ");
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console_cursor_save();
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printf("%s", info->command_line);
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console_cursor_on();
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if (console_keypressed(5 * 60))
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{
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console_cursor_restore();
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cli_edit(info->command_line, COMMAND_LINE_LENGTH);
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}
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console_cursor_off();
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putchar('\n');
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#else
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#ifdef __LINUX__
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printf("%s\n", info->command_line);
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#endif
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#endif
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#ifdef SCSI_SUPPORT
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info->kernel_image_offset = (unsigned long)info->kernel_image_offset + (unsigned long)info;
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#endif
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printf("Kernel image size is %d Bytes\n", info->kernel_image_size);
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/* allocate memory for kernel */
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printf("Allocating %d bytes for kernel\n", info->kernel_size);
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kernel = (char*)malloc_contiguous(info->kernel_size + 4 +
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bootstrap_size
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);
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if (kernel == 0)
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{
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printf("cannot allocate %d bytes\n", info->kernel_size);
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while(1);
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}
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/* align kernel address to a 4 byte word */
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kernel = (unsigned char*)(((unsigned long)kernel + 3) & 0xFFFFFFFC);
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printf("Kernel image base at %p\n", kernel);
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if (!check_full_in_bank((unsigned long)kernel, info->kernel_size))
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error("Kernel between two banks, contact maintainer\n");
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/* load kernel */
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printf("Loading kernel...\n");
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if (info->kernel_size == info->kernel_image_size) /* means uncompressed */
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{
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/* load kernel */
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ret = load_image((unsigned long)info->kernel_image_offset,
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info->kernel_size, kernel);
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if (ret == -1)
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error("Cannot load kernel image\n");
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}
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else
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{
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/* load and uncompress kernel */
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ret = load_gzip((unsigned long)info->kernel_image_offset,
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info->kernel_image_size, kernel);
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if (ret == -1)
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error("Cannot load and uncompress kernel image\n");
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}
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#ifdef ARCH_M68K
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if (arch_type == gestalt68k)
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{
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unsigned long enter_size = end_enter_kernel - enter_kernel;
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/* copy enter_kernel at end of kernel */
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memcpy((char*)kernel +
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info->kernel_size + bootstrap_size - enter_size,
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(char*)enter_kernel, enter_size);
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end_enter_kernel = (unsigned long)kernel +
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info->kernel_size + bootstrap_size;
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enter_kernel = (unsigned long)kernel +
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bootstrap_size - enter_size + info->kernel_size;
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}
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#endif
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/* load ramdisk if needed */
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if (info->ramdisk_size != 0)
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{
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printf("RAMDISK size is %d Bytes\n", info->ramdisk_size);
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ramdisk_start = (unsigned long)malloc_top(
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info->ramdisk_size + 4);
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ramdisk_start = (ramdisk_start + 3) & 0xFFFFFFFC;
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printf("RAMDISK base at 0x%lx\n", ramdisk_start);
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printf("Loading RAMDISK...\n");
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ret = load_image((unsigned long)info->ramdisk_offset,
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info->ramdisk_size, (char*)ramdisk_start);
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if (ret == -1)
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error("Cannot load ramdisk\n");
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if (!check_full_in_bank(ramdisk_start, info->ramdisk_size))
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error("ramdisk between two banks, contact maintainer\n");
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}
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else
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{
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ramdisk_start = 0;
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printf("no RAMDISK\n");
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}
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#ifdef ARCH_M68K
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if (arch_type == gestalt68k)
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{
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/* compute final address of kernel */
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if (mmu_type == gestaltNoMMU)
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{
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unsigned long size = end_enter_kernel - enter_kernel;
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#if defined(__LINUX__)
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/* initialize bootinfo structure */
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bootinfo_init(info->command_line,
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(char*)ramdisk_start, info->ramdisk_size);
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/* set bootinfo at end of kernel image */
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set_kernel_bootinfo(kernel + info->kernel_size);
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physImage = (unsigned long)kernel;
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start_mem = KERNEL_BASEADDR + 0x1000;
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entry_point = start_mem;
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#elif defined(__NETBSD__)
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start_mem = 0;
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entry_point = 0x2e00;
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#endif
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entry = (entry_t)(start_mem - size);
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printf("\n");
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printf("Physical address of kernel will be 0x%08lx\n",
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start_mem);
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printf("Ok, booting the kernel.\n");
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memcpy(entry, (char*)enter_kernel, size);
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} else
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#ifndef USE_MMU
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error("Unsupported MMU");
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#else
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{
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ret = logical2physical((unsigned long)kernel, &physImage);
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/* disable and flush cache */
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disable_cache();
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#if defined(__LINUX__)
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/* initialize bootinfo structure */
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bootinfo_init(info->command_line,
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(char*)ramdisk_start, info->ramdisk_size);
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/* add KERNEL_ALIGN if we have to align */
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aligned_size = boot_info.memory[0].addr & (KERNEL_ALIGN - 1);
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if ( aligned_size > 0 )
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{
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aligned_size = KERNEL_ALIGN - aligned_size;
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aligned_addr = boot_info.memory[0].addr + aligned_size;
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aligned_size = boot_info.memory[0].size - aligned_size;
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boot_info.memory[0].addr = aligned_addr;
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boot_info.memory[0].size = aligned_size;
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}
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/* set bootinfo at end of kernel image */
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set_kernel_bootinfo(kernel + info->kernel_size);
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start_mem = boot_info.memory[0].addr + PAGE_SIZE;
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entry_point = start_mem;
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#elif defined(__NETBSD__)
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bootenv_init(kernel + info->kernel_size);
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start_mem = 0;
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entry_point = 0x2e00;
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#endif
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printf("\n");
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printf("Physical address of kernel will be 0x%08lx\n",
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start_mem);
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printf("Ok, booting the kernel.\n");
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ret = logical2physical(enter_kernel, &physical);
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entry = (entry_t)physical;
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if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
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{
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unsigned long logi;
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unsigned long size = end_enter_kernel - enter_kernel;
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logi = vga_get_video();
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ret = logical2physical(logi, &physical);
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entry = (entry_t)physical;
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memcpy((char*)logi, (char*)enter_kernel, size);
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memcpy((char*)entry, (char*)enter_kernel, size);
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}
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}
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#endif /* USE_MMU */
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}
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else
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#ifndef ARCH_PPC
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error("EMILE doesn't support your architecture");
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#endif
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#endif /* ARCH_M68K */
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#ifdef ARCH_PPC
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if (arch_type == gestaltPowerPC)
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{
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bootx_init(info->command_line,
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(char*)ramdisk_start, info->ramdisk_size);
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regs.PC = (u_int32_t)kernel;
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#define BOOT_KERNEL_STACK_SIZE 65536
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regs.GPR[1] = (u_int32_t)malloc_contiguous(BOOT_KERNEL_STACK_SIZE)
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+ BOOT_KERNEL_STACK_SIZE - 512;
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regs.GPR[2] = 0;
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regs.GPR[3] = 'BooX';
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regs.GPR[4] = (u_int32_t)&bootx_infos;
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/* Set up the info for BAT mapping on Nubus */
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regs.GPR[5] = vga_get_videobase() & 0xFF800000UL;
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regs.GPR[11] = 1;
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printf("\n");
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printf("Physical address of kernel will be 0x%08lx\n",
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(unsigned long)kernel);
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printf("Ok, booting the kernel.\n");
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}
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else
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error("EMILE doesn't support your architecture");
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#endif
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turn_off_interrupts();
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asm("ori.w #0x0700,%sr");
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/* kick off */
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#ifdef ARCH_M68K
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if (arch_type == gestalt68k)
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entry(physImage, info->kernel_size + BI_ALLOC_SIZE, start_mem, entry_point);
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#endif
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#ifdef ARCH_PPC
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if (arch_type == gestaltPowerPC)
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enter_kernelPPC((unsigned long)kernel, ®s);
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#endif
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error("Kernel startup failed");
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return 0;
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}
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