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cmos init for IDE (Ben Pfaf) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1105 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-10-09 16:47:59 +00:00
parent 4b19ec0c2b
commit ba6c23778c
1 changed files with 54 additions and 2 deletions
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56
hw/pc.c
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@ -101,13 +101,32 @@ static int cmos_get_fd_drive_type(int fd0)
return val;
}
static void cmos_init(int ram_size, int boot_device)
static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
{
RTCState *s = rtc_state;
int cylinders, heads, sectors;
bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
rtc_set_memory(s, type_ofs, 47);
rtc_set_memory(s, info_ofs, cylinders);
rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
rtc_set_memory(s, info_ofs + 2, heads);
rtc_set_memory(s, info_ofs + 3, 0xff);
rtc_set_memory(s, info_ofs + 4, 0xff);
rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
rtc_set_memory(s, info_ofs + 6, cylinders);
rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
rtc_set_memory(s, info_ofs + 8, sectors);
}
/* hd_table must contain 4 block drivers */
static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table)
{
RTCState *s = rtc_state;
int val;
int fd0, fd1, nb;
time_t ti;
struct tm *tm;
int i;
/* set the CMOS date */
time(&ti);
@ -187,6 +206,39 @@ static void cmos_init(int ram_size, int boot_device)
val |= 0x04; /* PS/2 mouse installed */
rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
/* hard drives */
rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
if (hd_table[0])
cmos_init_hd(0x19, 0x1b, hd_table[0]);
if (hd_table[1])
cmos_init_hd(0x1a, 0x24, hd_table[1]);
val = 0;
for (i = 0; i < 4; i++)
if (hd_table[i]) {
int cylinders, heads, sectors;
uint8_t translation;
bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
/* No translation. */
translation = 0;
} else if (cylinders * heads > 131072) {
/* LBA translation. */
translation = 1;
} else {
/* LARGE translation. */
translation = 2;
}
val |= translation << (i * 2);
}
rtc_set_memory(s, 0x39, val);
/* Disable check of 0x55AA signature on the last two bytes of
first sector of disk. XXX: make it the default ? */
// rtc_set_memory(s, 0x38, 1);
}
static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val)
@ -512,7 +564,7 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
cmos_init(ram_size, boot_device);
cmos_init(ram_size, boot_device, bs_table);
/* must be done after all PCI devices are instanciated */
/* XXX: should be done in the Bochs BIOS */