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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [qemu] Allow booting from more than one device.
# HG changeset patch
# User Christian Limpach <Christian.Limpach@xxxxxxxxxxxxx>
# Node ID fc3e7e65b9530bf1c0fe7a7f12320edd8a656185
# Parent 45a84091144e26ce326b32d8bb661a788ab2685e
[qemu] Allow booting from more than one device.
The rombios supports trying to boot from more than one device and then
falling back. Set 'boot=dc' in your config file to try booting first
from the CD and then the hard drive.
Based on a patch from: Jeremy Katz <katzj@xxxxxxxxxx>
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxxx>
---
tools/examples/xmexample.hvm | 4 ++-
tools/examples/xmexample.vti | 4 ++-
tools/ioemu/hw/pc.c | 46 +++++++++++++++++++++++++------------------
tools/ioemu/vl.c | 19 ++++++++++-------
tools/ioemu/vl.h | 4 +--
5 files changed, 46 insertions(+), 31 deletions(-)
diff -r 45a84091144e -r fc3e7e65b953 tools/examples/xmexample.hvm
--- a/tools/examples/xmexample.hvm Sun Aug 20 17:55:33 2006 +0100
+++ b/tools/examples/xmexample.hvm Sun Aug 20 23:33:28 2006 +0100
@@ -116,7 +116,9 @@ device_model = '/usr/' + arch_libdir + '
#-----------------------------------------------------------------------------
# boot on floppy (a), hard disk (c) or CD-ROM (d)
-#boot=[a|c|d]
+# default: hard disk, cd-rom, floppy
+#boot="cda"
+
#-----------------------------------------------------------------------------
# write to temporary files instead of disk image files
#snapshot=1
diff -r 45a84091144e -r fc3e7e65b953 tools/examples/xmexample.vti
--- a/tools/examples/xmexample.vti Sun Aug 20 17:55:33 2006 +0100
+++ b/tools/examples/xmexample.vti Sun Aug 20 23:33:28 2006 +0100
@@ -75,7 +75,9 @@ memmap = '/usr/lib/xen/boot/mem-map.sxp'
#-----------------------------------------------------------------------------
# boot on floppy (a), hard disk (c) or CD-ROM (d)
-#boot=[a|c|d]
+# default: hard disk, cd-rom, floppy
+#boot="cda"
+
#-----------------------------------------------------------------------------
# write to temporary files instead of disk image files
#snapshot=1
diff -r 45a84091144e -r fc3e7e65b953 tools/ioemu/hw/pc.c
--- a/tools/ioemu/hw/pc.c Sun Aug 20 17:55:33 2006 +0100
+++ b/tools/ioemu/hw/pc.c Sun Aug 20 23:33:28 2006 +0100
@@ -158,8 +158,23 @@ static void cmos_init_hd(int type_ofs, i
rtc_set_memory(s, info_ofs + 8, sectors);
}
+static int get_bios_disk(char *boot_device, int index) {
+
+ if (index < strlen(boot_device)) {
+ switch (boot_device[index]) {
+ case 'a':
+ return 0x01; /* floppy */
+ case 'c':
+ return 0x02; /* hard drive */
+ case 'd':
+ return 0x03; /* cdrom */
+ }
+ }
+ return 0x00; /* no device */
+}
+
/* hd_table must contain 4 block drivers */
-static void cmos_init(uint64_t ram_size, int boot_device, BlockDriverState
**hd_table, time_t timeoffset)
+static void cmos_init(uint64_t ram_size, char *boot_device, BlockDriverState
**hd_table, time_t timeoffset)
{
RTCState *s = rtc_state;
int val;
@@ -205,21 +220,14 @@ static void cmos_init(uint64_t ram_size,
rtc_set_memory(s, 0x34, val);
rtc_set_memory(s, 0x35, val >> 8);
- switch(boot_device) {
- case 'a':
- case 'b':
- rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
- if (!fd_bootchk)
- rtc_set_memory(s, 0x38, 0x01); /* disable signature check */
- break;
- default:
- case 'c':
- rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
- break;
- case 'd':
- rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
- break;
- }
+ if (boot_device == NULL) {
+ /* default to hd, then cd, then floppy. */
+ boot_device = "cda";
+ }
+ rtc_set_memory(s, 0x3d, get_bios_disk(boot_device, 0) |
+ (get_bios_disk(boot_device, 1) << 4));
+ rtc_set_memory(s, 0x38, (get_bios_disk(boot_device, 2) << 4) |
+ (!fd_bootchk ? 0x01 : 0x00));
/* floppy type */
@@ -617,7 +625,7 @@ static void pc_init_ne2k_isa(NICInfo *nd
#define NOBIOS 1
/* PC hardware initialisation */
-static void pc_init1(uint64_t ram_size, int vga_ram_size, int boot_device,
+static void pc_init1(uint64_t ram_size, int vga_ram_size, char *boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, time_t timeoffset,
@@ -919,7 +927,7 @@ static void pc_init1(uint64_t ram_size,
}
}
-static void pc_init_pci(uint64_t ram_size, int vga_ram_size, int boot_device,
+static void pc_init_pci(uint64_t ram_size, int vga_ram_size, char *boot_device,
DisplayState *ds, const char **fd_filename,
int snapshot,
const char *kernel_filename,
@@ -933,7 +941,7 @@ static void pc_init_pci(uint64_t ram_siz
initrd_filename, timeoffset, 1);
}
-static void pc_init_isa(uint64_t ram_size, int vga_ram_size, int boot_device,
+static void pc_init_isa(uint64_t ram_size, int vga_ram_size, char *boot_device,
DisplayState *ds, const char **fd_filename,
int snapshot,
const char *kernel_filename,
diff -r 45a84091144e -r fc3e7e65b953 tools/ioemu/vl.c
--- a/tools/ioemu/vl.c Sun Aug 20 17:55:33 2006 +0100
+++ b/tools/ioemu/vl.c Sun Aug 20 23:33:28 2006 +0100
@@ -124,7 +124,7 @@ int vncunused;
int vncunused;
const char* keyboard_layout = NULL;
int64_t ticks_per_sec;
-int boot_device = 'c';
+char *boot_device = NULL;
uint64_t ram_size;
int pit_min_timer_count = 0;
int nb_nics;
@@ -6057,14 +6057,14 @@ int main(int argc, char **argv)
break;
#endif /* !CONFIG_DM */
case QEMU_OPTION_boot:
- boot_device = optarg[0];
- if (boot_device != 'a' &&
+ boot_device = strdup(optarg);
+ if (strspn(boot_device, "acd"
#ifdef TARGET_SPARC
- // Network boot
- boot_device != 'n' &&
-#endif
- boot_device != 'c' && boot_device != 'd') {
- fprintf(stderr, "qemu: invalid boot device '%c'\n",
boot_device);
+ "n"
+#endif
+ ) != strlen(boot_device)) {
+ fprintf(stderr, "qemu: invalid boot device in '%s'\n",
+ boot_device);
exit(1);
}
break;
@@ -6328,6 +6328,7 @@ int main(int argc, char **argv)
fd_filename[0] == '\0')
help();
+#if 0
/* boot to cd by default if no hard disk */
if (hd_filename[0] == '\0' && boot_device == 'c') {
if (fd_filename[0] != '\0')
@@ -6335,6 +6336,7 @@ int main(int argc, char **argv)
else
boot_device = 'd';
}
+#endif
#endif /* !CONFIG_DM */
setvbuf(stdout, NULL, _IOLBF, 0);
@@ -6593,6 +6595,7 @@ int main(int argc, char **argv)
ds, fd_filename, snapshot,
kernel_filename, kernel_cmdline, initrd_filename,
timeoffset);
+ free(boot_device);
/* init USB devices */
if (usb_enabled) {
diff -r 45a84091144e -r fc3e7e65b953 tools/ioemu/vl.h
--- a/tools/ioemu/vl.h Sun Aug 20 17:55:33 2006 +0100
+++ b/tools/ioemu/vl.h Sun Aug 20 23:33:28 2006 +0100
@@ -575,7 +575,7 @@ int qcow_compress_cluster(BlockDriverSta
#ifndef QEMU_TOOL
typedef void QEMUMachineInitFunc(uint64_t ram_size, int vga_ram_size,
- int boot_device,
+ char *boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, time_t timeoffset);
@@ -1020,7 +1020,7 @@ void NVRAM_set_crc (m48t59_t *nvram, uin
uint32_t start, uint32_t count);
int PPC_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
const unsigned char *arch,
- uint32_t RAM_size, int boot_device,
+ uint32_t RAM_size, char *boot_device,
uint32_t kernel_image, uint32_t kernel_size,
const char *cmdline,
uint32_t initrd_image, uint32_t initrd_size,
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