From a20dd508aa3895b2e5f4d4f255a4d6306b5e2631 Mon Sep 17 00:00:00 2001 From: bellard Date: Tue, 30 Sep 2003 21:07:02 +0000 Subject: [PATCH] simplified invocation - added automatic IDE disk geometry guessing to reuse old disk images directly git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@392 c046a42c-6fe2-441c-8c8c-71466251a162 --- vl.c | 156 ++++++++++++++++++++++++++++++++++++++++++++++++------------------- 1 file changed, 113 insertions(+), 43 deletions(-) diff --git a/vl.c b/vl.c index 94d919643f..ddb622c1af 100644 --- a/vl.c +++ b/vl.c @@ -44,7 +44,7 @@ #include #include -#include "cpu-i386.h" +#include "cpu.h" #include "disas.h" #include "thunk.h" @@ -216,7 +216,7 @@ IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS]; BlockDriverState *bs_table[MAX_DISKS]; int vga_ram_size; static DisplayState display_state; -int nodisp; +int nographic; int term_inited; int64_t ticks_per_sec; @@ -2434,6 +2434,52 @@ void ide_reset(IDEState *s) s->select = 0xa0; } +struct partition { + uint8_t boot_ind; /* 0x80 - active */ + uint8_t head; /* starting head */ + uint8_t sector; /* starting sector */ + uint8_t cyl; /* starting cylinder */ + uint8_t sys_ind; /* What partition type */ + uint8_t end_head; /* end head */ + uint8_t end_sector; /* end sector */ + uint8_t end_cyl; /* end cylinder */ + uint32_t start_sect; /* starting sector counting from 0 */ + uint32_t nr_sects; /* nr of sectors in partition */ +} __attribute__((packed)); + +/* try to guess the IDE geometry from the MSDOS partition table */ +void ide_guess_geometry(IDEState *s) +{ + uint8_t buf[512]; + int ret, i; + struct partition *p; + uint32_t nr_sects; + + if (s->cylinders != 0) + return; + ret = bdrv_read(s->bs, 0, buf, 1); + if (ret < 0) + return; + /* test msdos magic */ + if (buf[510] != 0x55 || buf[511] != 0xaa) + return; + for(i = 0; i < 4; i++) { + p = ((struct partition *)(buf + 0x1be)) + i; + nr_sects = tswap32(p->nr_sects); + if (nr_sects && p->end_head) { + /* We make the assumption that the partition terminates on + a cylinder boundary */ + s->heads = p->end_head + 1; + s->sectors = p->end_sector & 63; + s->cylinders = s->nb_sectors / (s->heads * s->sectors); +#if 0 + printf("guessed partition: CHS=%d %d %d\n", + s->cylinders, s->heads, s->sectors); +#endif + } + } +} + void ide_init(void) { IDEState *s; @@ -2445,6 +2491,8 @@ void ide_init(void) s->bs = bs_table[i]; if (s->bs) { bdrv_get_geometry(s->bs, &nb_sectors); + s->nb_sectors = nb_sectors; + ide_guess_geometry(s); if (s->cylinders == 0) { /* if no geometry, use a LBA compatible one */ cylinders = nb_sectors / (16 * 63); @@ -2456,7 +2504,6 @@ void ide_init(void) s->heads = 16; s->sectors = 63; } - s->nb_sectors = nb_sectors; } s->irq = 14; ide_reset(s); @@ -3136,7 +3183,10 @@ static void term_init(void) tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |INLCR|IGNCR|ICRNL|IXON); tty.c_oflag |= OPOST; - tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); + tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); + /* if graphical mode, we allow Ctrl-C handling */ + if (nographic) + tty.c_lflag &= ~ISIG; tty.c_cflag &= ~(CSIZE|PARENB); tty.c_cflag |= CS8; tty.c_cc[VMIN] = 1; @@ -3238,7 +3288,7 @@ int main_loop(void *opaque) uint8_t ch; CPUState *env = global_env; - if (nodisp && !term_inited) { + if (!term_inited) { /* initialize terminal only there so that the user has a chance to stop QEMU with Ctrl-C before the gdb connection is launched */ @@ -3328,26 +3378,30 @@ int main_loop(void *opaque) void help(void) { - printf("Virtual Linux version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" - "usage: vl [options] [bzImage [kernel parameters...]]\n" + printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" + "usage: qemu [options] [disk_image]\n" "\n" - "'bzImage' is a Linux kernel image (PAGE_OFFSET must be defined\n" - "to 0x90000000 in asm/page.h and arch/i386/vmlinux.lds)\n" + "'disk_image' is a raw hard image image for IDE hard disk 0\n" "\n" - "General options:\n" - "-initrd file use 'file' as initial ram disk\n" - "-hda file use 'file' as hard disk 0 image\n" - "-hdb file use 'file' as hard disk 1 image\n" - "-snapshot write to temporary files instead of disk image files\n" - "-m megs set virtual RAM size to megs MB\n" - "-n script set network init script [default=%s]\n" + "Standard options:\n" + "-hda file use 'file' as IDE hard disk 0 image\n" + "-hdb file use 'file' as IDE hard disk 1 image\n" + "-snapshot write to temporary files instead of disk image files\n" + "-m megs set virtual RAM size to megs MB\n" + "-n script set network init script [default=%s]\n" + "-nographic disable graphical output\n" + "\n" + "Linux boot specific (does not require PC BIOS):\n" + "-kernel bzImage use 'bzImage' as kernel image\n" + "-append cmdline use 'cmdline' as kernel command line\n" + "-initrd file use 'file' as initial ram disk\n" "\n" "Debug/Expert options:\n" - "-s wait gdb connection to port %d\n" - "-p port change gdb connection port\n" - "-d output log in /tmp/vl.log\n" - "-hdachs c,h,s force hard disk 0 geometry for non LBA disk images\n" - "-L path set the directory for the BIOS and VGA BIOS\n" + "-s wait gdb connection to port %d\n" + "-p port change gdb connection port\n" + "-d output log in /tmp/vl.log\n" + "-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n" + "-L path set the directory for the BIOS and VGA BIOS\n" "\n" "During emulation, use C-a h to get terminal commands:\n", DEFAULT_NETWORK_SCRIPT, DEFAULT_GDBSTUB_PORT); @@ -3361,10 +3415,24 @@ struct option long_options[] = { { "hdb", 1, NULL, 0, }, { "snapshot", 0, NULL, 0, }, { "hdachs", 1, NULL, 0, }, - { "nodisp", 0, NULL, 0, }, + { "nographic", 0, NULL, 0, }, + { "kernel", 1, NULL, 0, }, + { "append", 1, NULL, 0, }, { NULL, 0, NULL, 0 }, }; +#ifdef CONFIG_SDL +/* SDL use the pthreads and they modify sigaction. We don't + want that. */ +#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) +extern void __libc_sigaction(); +#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact) +#else +extern void __sigaction(); +#define sigaction(sig, act, oact) __sigaction(sig, act, oact) +#endif +#endif /* CONFIG_SDL */ + int main(int argc, char **argv) { int c, ret, initrd_size, i, use_gdbstub, gdbstub_port, long_index; @@ -3375,6 +3443,7 @@ int main(int argc, char **argv) CPUX86State *env; const char *tmpdir, *initrd_filename; const char *hd_filename[MAX_DISKS]; + const char *kernel_filename, *kernel_cmdline; DisplayState *ds = &display_state; /* we never want that malloc() uses mmap() */ @@ -3388,8 +3457,9 @@ int main(int argc, char **argv) use_gdbstub = 0; gdbstub_port = DEFAULT_GDBSTUB_PORT; snapshot = 0; - linux_boot = 0; - nodisp = 0; + nographic = 0; + kernel_filename = NULL; + kernel_cmdline = ""; for(;;) { c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index); if (c == -1) @@ -3432,7 +3502,13 @@ int main(int argc, char **argv) } break; case 5: - nodisp = 1; + nographic = 1; + break; + case 6: + kernel_filename = optarg; + break; + case 7: + kernel_cmdline = optarg; break; } break; @@ -3467,7 +3543,11 @@ int main(int argc, char **argv) } } - linux_boot = (optind < argc); + if (optind < argc) { + hd_filename[0] = argv[optind++]; + } + + linux_boot = (kernel_filename != NULL); if (!linux_boot && hd_filename[0] == '\0') help(); @@ -3487,7 +3567,7 @@ int main(int argc, char **argv) net_init(); /* init the memory */ - tmpdir = getenv("VLTMPDIR"); + tmpdir = getenv("QEMU_TMPDIR"); if (!tmpdir) tmpdir = "/tmp"; snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir); @@ -3538,9 +3618,10 @@ int main(int argc, char **argv) if (linux_boot) { /* now we can load the kernel */ - ret = load_kernel(argv[optind], phys_ram_base + KERNEL_LOAD_ADDR); + ret = load_kernel(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR); if (ret < 0) { - fprintf(stderr, "vl: could not load kernel '%s'\n", argv[optind]); + fprintf(stderr, "vl: could not load kernel '%s'\n", + kernel_filename); exit(1); } @@ -3562,11 +3643,7 @@ int main(int argc, char **argv) params->cl_magic = 0xA33F; params->cl_offset = params->commandline - (uint8_t *)params; params->alt_mem_k = (phys_ram_size / 1024) - 1024; - for(i = optind + 1; i < argc; i++) { - if (i != optind + 1) - pstrcat(params->commandline, sizeof(params->commandline), " "); - pstrcat(params->commandline, sizeof(params->commandline), argv[i]); - } + pstrcat(params->commandline, sizeof(params->commandline), kernel_cmdline); params->loader_type = 0x01; if (initrd_size > 0) { params->initrd_start = INITRD_LOAD_ADDR; @@ -3602,7 +3679,7 @@ int main(int argc, char **argv) } else { char buf[1024]; - + /* RAW PC boot */ /* BIOS load */ @@ -3642,18 +3719,11 @@ int main(int argc, char **argv) } /* terminal init */ - if (nodisp) { + if (nographic) { dumb_display_init(ds); } else { #ifdef CONFIG_SDL sdl_display_init(ds); - /* SDL use the pthreads and they modify sigaction. We don't - want that. */ -#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) -#define sigaction __libc_sigaction -#else -#define sigaction __sigaction -#endif #else dumb_display_init(ds); #endif -- 2.11.0