diff options
Diffstat (limited to 'qemu/roms/openbios/arch/ppc/mol/main.c')
-rw-r--r-- | qemu/roms/openbios/arch/ppc/mol/main.c | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/qemu/roms/openbios/arch/ppc/mol/main.c b/qemu/roms/openbios/arch/ppc/mol/main.c deleted file mode 100644 index f6ed934d0..000000000 --- a/qemu/roms/openbios/arch/ppc/mol/main.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - * Creation Date: <2002/10/02 22:24:24 samuel> - * Time-stamp: <2004/03/27 01:57:55 samuel> - * - * <main.c> - * - * - * - * Copyright (C) 2002, 2003, 2004 Samuel Rydh (samuel@ibrium.se) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation - * - */ - - -#include "config.h" -#include "libopenbios/bindings.h" -#include "libopenbios/elfload.h" -#include "arch/common/nvram.h" -#include "libc/diskio.h" -#include "libc/vsprintf.h" -#include "mol/mol.h" -#include "libopenbios/ofmem.h" -#include "osi_calls.h" -#include "ablk_sh.h" -#include "boothelper_sh.h" - - -static void patch_newworld_rom( char *start, size_t size ); -static void newworld_timer_hack( char *start, size_t size ); - -static void -transfer_control_to_elf( unsigned long entry ) -{ - extern void call_elf( unsigned long entry ); - printk("Starting ELF boot loader\n"); - call_elf( entry ); - - fatal_error("call_elf returned unexpectedly\n"); -} - -static int -load_elf_rom( unsigned long *entry, int fd ) -{ - int i, lszz_offs, elf_offs; - char buf[128], *addr; - Elf_ehdr ehdr; - Elf_phdr *phdr; - size_t s; - - printk("Loading '%s' from '%s'\n", get_file_path(fd), - get_volume_name(fd) ); - - /* the ELF-image (usually) starts at offset 0x4000 */ - if( (elf_offs=find_elf(fd)) < 0 ) { - printk("----> %s is not an ELF image\n", buf ); - exit(1); - } - if( !(phdr=elf_readhdrs(fd, elf_offs, &ehdr)) ) - fatal_error("elf_readhdrs failed\n"); - - *entry = ehdr.e_entry; - - /* load segments. Compressed ROM-image assumed to be located immediately - * after the last segment */ - lszz_offs = elf_offs; - for( i=0; i<ehdr.e_phnum; i++ ) { - /* p_memsz, p_flags */ - s = MIN( phdr[i].p_filesz, phdr[i].p_memsz ); - seek_io( fd, elf_offs + phdr[i].p_offset ); - - /* printk("filesz: %08lX memsz: %08lX p_offset: %08lX p_vaddr %08lX\n", - phdr[i].p_filesz, phdr[i].p_memsz, phdr[i].p_offset, - phdr[i].p_vaddr ); */ - - if( phdr[i].p_vaddr != phdr[i].p_paddr ) - printk("WARNING: ELF segment virtual addr != physical addr\n"); - lszz_offs = MAX( lszz_offs, elf_offs + phdr[i].p_offset + phdr[i].p_filesz ); - if( !s ) - continue; - if( ofmem_claim( phdr[i].p_vaddr, phdr[i].p_memsz, 0 ) == -1 ) - fatal_error("Claim failed!\n"); - - addr = (char*)phdr[i].p_vaddr; - if( read_io(fd, addr, s) != s ) - fatal_error("read failed\n"); - - /* patch CODE segment */ - if( *entry >= phdr[i].p_vaddr && *entry < phdr[i].p_vaddr + s ) { - patch_newworld_rom( (char*)phdr[i].p_vaddr, s ); - newworld_timer_hack( (char*)phdr[i].p_vaddr, s ); - } - flush_icache_range( addr, addr+s ); - - /* printk("ELF ROM-section loaded at %08lX (size %08lX)\n", - (unsigned long)phdr[i].p_vaddr, (unsigned long)phdr[i].p_memsz );*/ - } - free( phdr ); - return lszz_offs; -} - - -/************************************************************************/ -/* newworld ROM loading */ -/************************************************************************/ - -#define ROM_BASE 0x1100000 /* where we decide to put things */ - -/* fix bug present in the 2.4 and the 3.0 Apple ROM */ -static void -patch_newworld_rom( char *start, size_t size ) -{ - int s; - unsigned long mark[] = { 0x7c7d1b78, /* mr r29,r3 */ - 0x7c9c2378, /* mr r28,r4 */ - 0x7cc33378, /* mr r3,r6 */ - 0x7c864214, /* add r4,r6,r8 <------ BUG -- */ - 0x80b10000, /* lwz r5,0(r17) */ - 0x38a500e8 }; /* addi r5,r5,232 */ - - /* Correcting add r4,r6,r8 ----> addi r4,r6,8 */ - for( s=0; s<size-sizeof(mark); s+=4 ) - if( memcmp( start+s, mark, sizeof(mark)) == 0 ) { - printk("FIXING ROM BUG @ %X!\n", s+12); - ((unsigned long*)(start+s))[3] = 0x38860008; /* addi r4,r6,8 */ - } -} - -/* This hack is only needed on machines with a timebase slower than 12.5 MHz - * (50 MHz bus frequency). Typically only old, accelerated machines fall - * into this category. The cause of the problem is an overflow in Apple's - * calibration routine. - */ -static void -newworld_timer_hack( char *start, size_t size ) -{ - int s; - unsigned long mark[] = { 0x7d0000a6, 0x5507045e, 0x7ce00124, 0x4c00012c, - 0x38e00000, 0x3c80000f, 0x6084ffff, 0x98830c00, - 0x7c0006ac, 0x98830a00, 0x7c0006ac, 0x7c9603a6, - 0x4c00012c, 0x7cb602a6, 0x2c050000, 0x4181fff8, - 0x7c0004ac, 0x88830a00, 0x7c0006ac, 0x88a30800, - 0x7c0006ac, 0x88c30a00, 0x7c0006ac, 0x7c043040, - 0x40a2ffe4, 0x5085442e, 0x7ca500d0, 0x54a5043e, - 0x7c053840, 0x7ca72b78, 0x4082ff9c, 0x7ca32b78, - 0x7d000124, 0x4c00012c, 0x4e800020 - }; - - /* return #via ticks corresponding to 0xfffff DEC ticks (VIA frequency == 47/60 MHz) */ - for( s=0; s < size-sizeof(mark); s+=4 ) { - if( !memcmp( start+s, mark, sizeof(mark)) ) { - extern char timer_calib_start[], timer_calib_end[]; - extern unsigned long nw_dec_calibration; - int hz = OSI_UsecsToMticks(1000); - nw_dec_calibration = OSI_MticksToUsecs(0xfffff*47)/60; - memcpy( start + s, timer_calib_start, timer_calib_end - timer_calib_start ); - - printk("Timer calibration fix: %d.%02d MHz [%ld]\n", - hz/1000, (hz/10)%100, nw_dec_calibration ); - break; - } - } -} - -static unsigned long -load_newworld_rom( int fd ) -{ - int lszz_offs, lszz_size; - unsigned long entry, data[2]; - phandle_t ph; - - lszz_offs = load_elf_rom( &entry, fd ); - seek_io( fd, -1 ); - lszz_size = tell(fd) - lszz_offs; - seek_io( fd, lszz_offs ); - - /* printk("Compressed ROM image: offset %08X, size %08X loaded at %08x\n", - lszz_offs, lszz_size, ROM_BASE ); */ - - if( ofmem_claim(ROM_BASE, lszz_size, 0) == -1 ) - fatal_error("Claim failure (lszz)!\n"); - - read_io( fd, (char*)ROM_BASE, lszz_size ); - - /* Fix the /rom/macos/AAPL,toolbox-image,lzss property (phys, size) */ -#if 0 - if( (ph=prom_create_node("/rom/macos/")) == -1 ) - fatal_error("Failed creating /rom/macos/"); -#else - ph = find_dev("/rom/macos"); -#endif - data[0] = ROM_BASE; - data[1] = lszz_size; - set_property( ph, "AAPL,toolbox-image,lzss", (char*)data, sizeof(data) ); - - /* The 7.8 rom (MacOS 9.2) uses AAPL,toolbox-parcels instead of - * AAPL,toolbox-image,lzss. It probably doesn't hurt to have it - * always present (we don't have an easy way to determine ROM version...) - */ - set_property( ph, "AAPL,toolbox-parcels", (char*)data, sizeof(data) ); - return entry; -} - -static int -search_nwrom( int fd, int fast ) -{ - char *s, buf[128]; - int found = 0; - - if( fast ) { - int ind; - found = !reopen( fd, "\\\\:tbxi" ); - for( ind=0; !found && (s=BootHGetStrResInd("macos_rompath", buf, sizeof(buf), ind++, 0)) ; ) - found = !reopen( fd, s ); - for( ind=0; !found && (s=BootHGetStrResInd("macos_rompath_", buf, sizeof(buf), ind++, 0)) ; ) - found = !reopen( fd, s ); - } else { - printk("Searching %s for a 'Mac OS ROM' file\n", get_volume_name(fd) ); - if( !(found=reopen_nwrom(fd)) ) { - printk(" \n**** HINT ***************************************************\n"); - printk("* The booting can be speeded up by adding the line\n"); - printk("* macos_rompath: '%s'\n", get_file_path(fd) ); - printk("* to the /etc/mol/molrc.macos (recommended).\n"); - printk("*************************************************************\n \n"); - } - } - return found; -} - -static void -encode_bootpath( const char *spec, const char *args ) -{ - phandle_t chosen_ph = find_dev("/chosen"); - set_property( chosen_ph, "bootpath", spec, strlen(spec)+1 ); - set_property( chosen_ph, "bootargs", args, strlen(args)+1 ); -} - -static char * -newworld_load( const char *node_path, const char *spec, int do_search ) -{ - char *p, *entry, buf[80]; - int fd, len; - - if( (fd=open_io(spec)) == -1 ) - return NULL; - - if( !search_nwrom(fd, do_search) ) { - close_io(fd); - return NULL; - } - printk("Boot Disk: %s [%s]\n", spec, get_fstype(fd) ); - - entry = (char*)load_newworld_rom( fd ); - -#if 1 - PUSH_ih( get_ih_from_fd(fd) ); - fword("get-instance-path"); - len = POP(); - p = (char*)POP(); - buf[0] = 0; - if( len < sizeof(buf) ) { - memcpy( buf, p, len ); - buf[len] =0; - } - strcat( buf, "/x@:" ); - printk("boot_path: %s\n", buf ); - encode_bootpath( buf, "" ); -#endif - close_io( fd ); - return entry; -} - -static void -newworld_startup( void ) -{ - int i, j, bootunit, type, fd; - ablk_disk_info_t info; - char *entry = NULL; - char spec[80]; - phandle_t ph; - - char path[]="/pci/pci-bridge/mol-blk"; - if( !(ph=find_dev(path)) ) - fatal_error("MOLBlockDriver node not found\n"); - - /* user-specified newworld ROMs take precedence */ - if( (fd=open_io("pseudo:,nwrom")) >= 0 ) { - entry = (char*)load_newworld_rom( fd ); - close_io( fd ); - } - - /* determine boot volume */ - for( bootunit=-1, type=0; bootunit==-1 && type<3 ; type++ ) { - for( i=0; !OSI_ABlkDiskInfo(0, i, &info) ; i++ ) { - if( type<=1 && !(info.flags & ABLK_BOOT_HINT) ) - continue; - if( type>1 && (info.flags & ABLK_BOOT_HINT) ) - continue; - - for( j=0; !entry && j<32; j++ ) { - snprintf( spec, sizeof(spec), "%s/disk@%x:%d", - path, i, j ); - entry = newworld_load( path, spec, (!type || type==2) ); - } - if( entry ) { - bootunit = i; - break; - } - } - } - - if( entry ) { - OSI_ABlkBlessDisk( 0 /*channel*/, bootunit ); - - update_nvram(); - transfer_control_to_elf( (unsigned long)entry ); - /* won't come here */ - return; - } - - printk("\n--- No bootable disk was found! -----------------------------\n"); - printk("If this is an oldworld machine, try booting from the MacOS\n"); - printk("install CD and install MacOS from within MOL.\n"); - printk("-------------------------------------------------------------\n"); - exit(1); -} - - -/************************************************************************/ -/* yaboot booting */ -/************************************************************************/ - -static void -yaboot_startup( void ) -{ - const char *paths[] = { "pseudo:,ofclient", "pseudo:,yaboot", NULL }; - unsigned long entry; - int i, fd; - - for( i=0; paths[i]; i++ ) { - if( (fd=open_io(paths[i])) == -1 ) - continue; - (void) load_elf_rom( &entry, fd ); - close_io( fd ); - encode_bootpath( paths[i], "" ); - - update_nvram(); - transfer_control_to_elf( entry ); - /* won't come here */ - } - printk("*** Boot failure! No secondary bootloader specified ***\n"); - exit(1); -} - - -/************************************************************************/ -/* entry */ -/************************************************************************/ - -void -boot( void ) -{ - fword("update-chosen"); - if( find_dev("/mol-platform") ) - yaboot_startup(); - else - newworld_startup(); -} |