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More generic boot devices specification, allowing more devices to be specified

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and avoiding per-target hardcoded limitations.
The machine implementations can then check if the given devices match the
actual hardware implementation and firmware API.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3577 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer
2007-11-11 01:50:45 +00:00
parent aba9ee8726
commit 28c5af54c6
5 changed files with 125 additions and 51 deletions
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100
vl.c
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@@ -162,12 +162,6 @@ static DisplayState display_state;
int nographic;
const char* keyboard_layout = NULL;
int64_t ticks_per_sec;
#if defined(TARGET_I386)
#define MAX_BOOT_DEVICES 3
#else
#define MAX_BOOT_DEVICES 1
#endif
static char boot_device[MAX_BOOT_DEVICES + 1];
int ram_size;
int pit_min_timer_count = 0;
int nb_nics;
@@ -7587,14 +7581,16 @@ int main(int argc, char **argv)
int use_gdbstub;
const char *gdbstub_port;
#endif
uint32_t boot_devices_bitmap = 0;
int i, cdrom_index, pflash_index;
int snapshot, linux_boot;
int snapshot, linux_boot, net_boot;
const char *initrd_filename;
const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
const char *pflash_filename[MAX_PFLASH];
const char *sd_filename;
const char *mtd_filename;
const char *kernel_filename, *kernel_cmdline;
const char *boot_devices = "";
DisplayState *ds = &display_state;
int cyls, heads, secs, translation;
char net_clients[MAX_NET_CLIENTS][256];
@@ -7846,20 +7842,34 @@ int main(int argc, char **argv)
}
break;
case QEMU_OPTION_boot:
if (strlen(optarg) > MAX_BOOT_DEVICES) {
fprintf(stderr, "qemu: too many boot devices\n");
exit(1);
}
strncpy(boot_device, optarg, MAX_BOOT_DEVICES);
#if defined(TARGET_SPARC) || defined(TARGET_I386)
#define BOOTCHARS "acdn"
#else
#define BOOTCHARS "acd"
#endif
if (strlen(boot_device) != strspn(boot_device, BOOTCHARS)) {
fprintf(stderr, "qemu: invalid boot device "
"sequence '%s'\n", boot_device);
exit(1);
boot_devices = optarg;
/* We just do some generic consistency checks */
{
/* Could easily be extended to 64 devices if needed */
const unsigned char *p;
boot_devices_bitmap = 0;
for (p = boot_devices; *p != '\0'; p++) {
/* Allowed boot devices are:
* a b : floppy disk drives
* c ... f : IDE disk drives
* g ... m : machine implementation dependant drives
* n ... p : network devices
* It's up to each machine implementation to check
* if the given boot devices match the actual hardware
* implementation and firmware features.
*/
if (*p < 'a' || *p > 'q') {
fprintf(stderr, "Invalid boot device '%c'\n", *p);
exit(1);
}
if (boot_devices_bitmap & (1 << (*p - 'a'))) {
fprintf(stderr,
"Boot device '%c' was given twice\n",*p);
exit(1);
}
boot_devices_bitmap |= 1 << (*p - 'a');
}
}
break;
case QEMU_OPTION_fda:
@@ -8243,23 +8253,23 @@ int main(int argc, char **argv)
kqemu_allowed = 0;
#endif
linux_boot = (kernel_filename != NULL);
if (!linux_boot &&
(!strchr(boot_device, 'n')) &&
net_boot = (boot_devices_bitmap >> ('n' - 'a')) && 0xF;
/* XXX: this should not be: some embedded targets just have flash */
if (!linux_boot && net_boot == 0 &&
hd_filename[0] == '\0' &&
(cdrom_index >= 0 && hd_filename[cdrom_index] == '\0') &&
fd_filename[0] == '\0')
help(1);
/* boot to floppy or the default cd if no hard disk defined yet */
if (!boot_device[0]) {
if (!boot_devices[0]) {
if (hd_filename[0] != '\0')
boot_device[0] = 'c';
boot_devices = "c";
else if (fd_filename[0] != '\0')
boot_device[0] = 'a';
boot_devices = "a";
else
boot_device[0] = 'd';
boot_device[1] = 0;
boot_devices = "d";
}
setvbuf(stdout, NULL, _IOLBF, 0);
@@ -8299,20 +8309,28 @@ int main(int argc, char **argv)
}
#ifdef TARGET_I386
if (strchr(boot_device, 'n')) {
for (i = 0; i < nb_nics; i++) {
/* XXX: this should be moved in the PC machine instanciation code */
if (net_boot != 0) {
int netroms = 0;
for (i = 0; i < nb_nics && i < 4; i++) {
const char *model = nd_table[i].model;
char buf[1024];
if (model == NULL)
model = "ne2k_pci";
snprintf(buf, sizeof(buf), "%s/pxe-%s.bin", bios_dir, model);
if (get_image_size(buf) > 0) {
option_rom[nb_option_roms] = strdup(buf);
nb_option_roms++;
break;
}
if (net_boot & (1 << i)) {
if (model == NULL)
model = "ne2k_pci";
snprintf(buf, sizeof(buf), "%s/pxe-%s.bin", bios_dir, model);
if (get_image_size(buf) > 0) {
if (nb_option_roms >= MAX_OPTION_ROMS) {
fprintf(stderr, "Too many option ROMs\n");
exit(1);
}
option_rom[nb_option_roms] = strdup(buf);
nb_option_roms++;
netroms++;
}
}
}
if (i == nb_nics) {
if (netroms == 0) {
fprintf(stderr, "No valid PXE rom found for network device\n");
exit(1);
}
@@ -8492,7 +8510,7 @@ int main(int argc, char **argv)
}
}
machine->init(ram_size, vga_ram_size, boot_device,
machine->init(ram_size, vga_ram_size, boot_devices,
ds, fd_filename, snapshot,
kernel_filename, kernel_cmdline, initrd_filename, cpu_model);