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https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
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
This commit is contained in:
bellard
parent
6180a1818a
commit
a20dd508aa
1 changed files with 113 additions and 43 deletions
156
vl.c
156
vl.c
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@ -44,7 +44,7 @@
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#include <linux/if.h>
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#include <linux/if_tun.h>
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#include "cpu-i386.h"
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#include "cpu.h"
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#include "disas.h"
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#include "thunk.h"
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@ -216,7 +216,7 @@ IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
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BlockDriverState *bs_table[MAX_DISKS];
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int vga_ram_size;
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static DisplayState display_state;
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int nodisp;
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int nographic;
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int term_inited;
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int64_t ticks_per_sec;
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@ -2434,6 +2434,52 @@ void ide_reset(IDEState *s)
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s->select = 0xa0;
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}
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struct partition {
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uint8_t boot_ind; /* 0x80 - active */
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uint8_t head; /* starting head */
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uint8_t sector; /* starting sector */
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uint8_t cyl; /* starting cylinder */
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uint8_t sys_ind; /* What partition type */
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uint8_t end_head; /* end head */
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uint8_t end_sector; /* end sector */
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uint8_t end_cyl; /* end cylinder */
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uint32_t start_sect; /* starting sector counting from 0 */
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uint32_t nr_sects; /* nr of sectors in partition */
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} __attribute__((packed));
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/* try to guess the IDE geometry from the MSDOS partition table */
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void ide_guess_geometry(IDEState *s)
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{
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uint8_t buf[512];
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int ret, i;
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struct partition *p;
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uint32_t nr_sects;
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if (s->cylinders != 0)
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return;
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ret = bdrv_read(s->bs, 0, buf, 1);
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if (ret < 0)
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return;
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/* test msdos magic */
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if (buf[510] != 0x55 || buf[511] != 0xaa)
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return;
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for(i = 0; i < 4; i++) {
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p = ((struct partition *)(buf + 0x1be)) + i;
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nr_sects = tswap32(p->nr_sects);
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if (nr_sects && p->end_head) {
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/* We make the assumption that the partition terminates on
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a cylinder boundary */
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s->heads = p->end_head + 1;
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s->sectors = p->end_sector & 63;
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s->cylinders = s->nb_sectors / (s->heads * s->sectors);
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#if 0
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printf("guessed partition: CHS=%d %d %d\n",
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s->cylinders, s->heads, s->sectors);
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#endif
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}
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}
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}
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void ide_init(void)
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{
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IDEState *s;
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@ -2445,6 +2491,8 @@ void ide_init(void)
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s->bs = bs_table[i];
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if (s->bs) {
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bdrv_get_geometry(s->bs, &nb_sectors);
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s->nb_sectors = nb_sectors;
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ide_guess_geometry(s);
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if (s->cylinders == 0) {
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/* if no geometry, use a LBA compatible one */
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cylinders = nb_sectors / (16 * 63);
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@ -2456,7 +2504,6 @@ void ide_init(void)
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s->heads = 16;
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s->sectors = 63;
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}
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s->nb_sectors = nb_sectors;
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}
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s->irq = 14;
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ide_reset(s);
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@ -3136,7 +3183,10 @@ static void term_init(void)
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tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
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|INLCR|IGNCR|ICRNL|IXON);
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tty.c_oflag |= OPOST;
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tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
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tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
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/* if graphical mode, we allow Ctrl-C handling */
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if (nographic)
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tty.c_lflag &= ~ISIG;
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tty.c_cflag &= ~(CSIZE|PARENB);
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tty.c_cflag |= CS8;
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tty.c_cc[VMIN] = 1;
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@ -3238,7 +3288,7 @@ int main_loop(void *opaque)
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uint8_t ch;
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CPUState *env = global_env;
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if (nodisp && !term_inited) {
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if (!term_inited) {
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/* initialize terminal only there so that the user has a
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chance to stop QEMU with Ctrl-C before the gdb connection
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is launched */
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@ -3328,26 +3378,30 @@ int main_loop(void *opaque)
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void help(void)
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{
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printf("Virtual Linux version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
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"usage: vl [options] [bzImage [kernel parameters...]]\n"
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printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
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"usage: qemu [options] [disk_image]\n"
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"\n"
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"'bzImage' is a Linux kernel image (PAGE_OFFSET must be defined\n"
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"to 0x90000000 in asm/page.h and arch/i386/vmlinux.lds)\n"
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"'disk_image' is a raw hard image image for IDE hard disk 0\n"
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"\n"
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"General options:\n"
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"-initrd file use 'file' as initial ram disk\n"
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"-hda file use 'file' as hard disk 0 image\n"
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"-hdb file use 'file' as hard disk 1 image\n"
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"-snapshot write to temporary files instead of disk image files\n"
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"-m megs set virtual RAM size to megs MB\n"
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"-n script set network init script [default=%s]\n"
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"Standard options:\n"
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"-hda file use 'file' as IDE hard disk 0 image\n"
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"-hdb file use 'file' as IDE hard disk 1 image\n"
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"-snapshot write to temporary files instead of disk image files\n"
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"-m megs set virtual RAM size to megs MB\n"
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"-n script set network init script [default=%s]\n"
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"-nographic disable graphical output\n"
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"\n"
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"Linux boot specific (does not require PC BIOS):\n"
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"-kernel bzImage use 'bzImage' as kernel image\n"
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"-append cmdline use 'cmdline' as kernel command line\n"
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"-initrd file use 'file' as initial ram disk\n"
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"\n"
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"Debug/Expert options:\n"
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"-s wait gdb connection to port %d\n"
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"-p port change gdb connection port\n"
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"-d output log in /tmp/vl.log\n"
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"-hdachs c,h,s force hard disk 0 geometry for non LBA disk images\n"
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"-L path set the directory for the BIOS and VGA BIOS\n"
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"-s wait gdb connection to port %d\n"
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"-p port change gdb connection port\n"
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"-d output log in /tmp/vl.log\n"
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"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
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"-L path set the directory for the BIOS and VGA BIOS\n"
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"\n"
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"During emulation, use C-a h to get terminal commands:\n",
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DEFAULT_NETWORK_SCRIPT, DEFAULT_GDBSTUB_PORT);
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@ -3361,10 +3415,24 @@ struct option long_options[] = {
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{ "hdb", 1, NULL, 0, },
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{ "snapshot", 0, NULL, 0, },
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{ "hdachs", 1, NULL, 0, },
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{ "nodisp", 0, NULL, 0, },
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{ "nographic", 0, NULL, 0, },
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{ "kernel", 1, NULL, 0, },
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{ "append", 1, NULL, 0, },
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{ NULL, 0, NULL, 0 },
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};
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#ifdef CONFIG_SDL
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/* SDL use the pthreads and they modify sigaction. We don't
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want that. */
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#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
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extern void __libc_sigaction();
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#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
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#else
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extern void __sigaction();
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#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
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#endif
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#endif /* CONFIG_SDL */
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int main(int argc, char **argv)
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{
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int c, ret, initrd_size, i, use_gdbstub, gdbstub_port, long_index;
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@ -3375,6 +3443,7 @@ int main(int argc, char **argv)
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CPUX86State *env;
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const char *tmpdir, *initrd_filename;
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const char *hd_filename[MAX_DISKS];
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const char *kernel_filename, *kernel_cmdline;
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DisplayState *ds = &display_state;
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/* we never want that malloc() uses mmap() */
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@ -3388,8 +3457,9 @@ int main(int argc, char **argv)
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use_gdbstub = 0;
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gdbstub_port = DEFAULT_GDBSTUB_PORT;
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snapshot = 0;
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linux_boot = 0;
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nodisp = 0;
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nographic = 0;
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kernel_filename = NULL;
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kernel_cmdline = "";
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for(;;) {
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c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
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if (c == -1)
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@ -3432,7 +3502,13 @@ int main(int argc, char **argv)
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}
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break;
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case 5:
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nodisp = 1;
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nographic = 1;
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break;
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case 6:
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kernel_filename = optarg;
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break;
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case 7:
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kernel_cmdline = optarg;
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break;
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}
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break;
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@ -3467,7 +3543,11 @@ int main(int argc, char **argv)
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}
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}
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linux_boot = (optind < argc);
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if (optind < argc) {
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hd_filename[0] = argv[optind++];
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}
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linux_boot = (kernel_filename != NULL);
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if (!linux_boot && hd_filename[0] == '\0')
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help();
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@ -3487,7 +3567,7 @@ int main(int argc, char **argv)
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net_init();
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/* init the memory */
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tmpdir = getenv("VLTMPDIR");
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tmpdir = getenv("QEMU_TMPDIR");
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if (!tmpdir)
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tmpdir = "/tmp";
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snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
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@ -3538,9 +3618,10 @@ int main(int argc, char **argv)
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if (linux_boot) {
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/* now we can load the kernel */
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ret = load_kernel(argv[optind], phys_ram_base + KERNEL_LOAD_ADDR);
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ret = load_kernel(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
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if (ret < 0) {
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fprintf(stderr, "vl: could not load kernel '%s'\n", argv[optind]);
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fprintf(stderr, "vl: could not load kernel '%s'\n",
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kernel_filename);
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exit(1);
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}
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@ -3562,11 +3643,7 @@ int main(int argc, char **argv)
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params->cl_magic = 0xA33F;
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params->cl_offset = params->commandline - (uint8_t *)params;
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params->alt_mem_k = (phys_ram_size / 1024) - 1024;
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for(i = optind + 1; i < argc; i++) {
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if (i != optind + 1)
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pstrcat(params->commandline, sizeof(params->commandline), " ");
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pstrcat(params->commandline, sizeof(params->commandline), argv[i]);
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}
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pstrcat(params->commandline, sizeof(params->commandline), kernel_cmdline);
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params->loader_type = 0x01;
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if (initrd_size > 0) {
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params->initrd_start = INITRD_LOAD_ADDR;
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@ -3602,7 +3679,7 @@ int main(int argc, char **argv)
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} else {
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char buf[1024];
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/* RAW PC boot */
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/* BIOS load */
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@ -3642,18 +3719,11 @@ int main(int argc, char **argv)
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}
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/* terminal init */
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if (nodisp) {
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if (nographic) {
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dumb_display_init(ds);
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} else {
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#ifdef CONFIG_SDL
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sdl_display_init(ds);
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/* SDL use the pthreads and they modify sigaction. We don't
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want that. */
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#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
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#define sigaction __libc_sigaction
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#else
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#define sigaction __sigaction
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#endif
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#else
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dumb_display_init(ds);
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#endif
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