int trap_handler(struct trapframe *tf)
{
switch(tf->trapno) {
case TRAP_SYSCALL:
print_tf(tf);
return kern_syscall(tf->regs.eax,
tf->regs.edx,
tf->regs.ecx);
case TRAP_GEP:
// 2018-05-18 FIXME: found #GEP issue on vmware player 12.5.9 by testing
print_tf(tf);
panic("panic: system halt, not fix yet\n");
case TRAP_QEMU_MOUSE_CLICK: // not handle yet
// [fixed] got 44 trap_handler while mouse click the window of qemu at the first time
// after qemu-system-x86_64 started (tested in QEMU version 2.12.0, OSX 10.13.4)
{
unsigned char m_char = inb(0x60);
printf("event mouse grap qemu window trapno(%d) eax: %04x, edx: %04x, ecx: %04x, mb:%02x\n",
tf->trapno,
tf->regs.eax,
tf->regs.edx,
tf->regs.ecx, m_char);
}
return 0;
default:
print_tf(tf);
panic("panic: system halt\n");
}
return 0;
}
static uint16_t mct_MaxLoadFreq(uint8_t count, uint8_t highest_rank_count, uint8_t registered, uint8_t voltage, uint16_t freq)
{
/* FIXME
* Mainboards need to be able to specify the maximum number of DIMMs installable per channel
* For now assume a maximum of 2 DIMMs per channel can be installed
*/
uint8_t MaxDimmsInstallable = 2;
/* Return limited maximum RAM frequency */
if (IS_ENABLED(CONFIG_DIMM_DDR2)) {
if (IS_ENABLED(CONFIG_DIMM_REGISTERED) && registered) {
/* K10 BKDG Rev. 3.62 Table 53 */
if (count > 2) {
/* Limit to DDR2-533 */
if (freq > 266) {
freq = 266;
print_tf(__func__, ": More than 2 registered DIMMs on channel; limiting to DDR2-533\n");
}
}
} else {
/* K10 BKDG Rev. 3.62 Table 52 */
if (count > 1) {
/* Limit to DDR2-800 */
if (freq > 400) {
freq = 400;
print_tf(__func__, ": More than 1 unbuffered DIMM on channel; limiting to DDR2-800\n");
}
}
}
} else if (IS_ENABLED(CONFIG_DIMM_DDR3)) {
if (voltage == 0) {
printk(BIOS_DEBUG, "%s: WARNING: Mainboard DDR3 voltage unknown, assuming 1.5V!\n", __func__);
voltage = 0x1;
}
if (is_fam15h()) {
if (IS_ENABLED(CONFIG_DIMM_REGISTERED) && registered) {
/* Fam15h BKDG Rev. 3.14 Table 27 */
if (voltage & 0x4) {
/* 1.25V */
if (count > 1) {
if (highest_rank_count > 1) {
/* Limit to DDR3-1066 */
if (freq > 533) {
freq = 533;
printk(BIOS_DEBUG, "%s: More than 1 registered DIMM on %dmV channel; limiting to DDR3-1066\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: More than 1 registered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
} else {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: 1 registered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
} else if (voltage & 0x2) {
/* 1.35V */
if (count > 1) {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: More than 1 registered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: 1 registered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
}
} else if (voltage & 0x1) {
/* 1.50V */
if (count > 1) {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: More than 1 registered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1866 */
if (freq > 933) {
freq = 933;
printk(BIOS_DEBUG, "%s: 1 registered DIMM on %dmV channel; limiting to DDR3-1866\n", __func__, voltage_index_to_mv(voltage));
}
}
}
} else {
/* Fam15h BKDG Rev. 3.14 Table 26 */
if (voltage & 0x4) {
/* 1.25V */
if (count > 1) {
if (highest_rank_count > 1) {
/* Limit to DDR3-1066 */
if (freq > 533) {
freq = 533;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1066\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
} else {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
} else if (voltage & 0x2) {
/* 1.35V */
if (MaxDimmsInstallable > 1) {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
}
} else if (voltage & 0x1) {
if (MaxDimmsInstallable == 1) {
if (count > 1) {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1866 */
if (freq > 933) {
freq = 933;
printk(BIOS_DEBUG, "%s: 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1866\n", __func__, voltage_index_to_mv(voltage));
}
}
} else {
if (count > 1) {
if (highest_rank_count > 1) {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: More than 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
}
} else {
/* Limit to DDR3-1600 */
if (freq > 800) {
freq = 800;
printk(BIOS_DEBUG, "%s: 1 unbuffered DIMM on %dmV channel; limiting to DDR3-1600\n", __func__, voltage_index_to_mv(voltage));
}
}
}
}
}
} else {
if (IS_ENABLED(CONFIG_DIMM_REGISTERED) && registered) {
/* K10 BKDG Rev. 3.62 Table 34 */
if (count > 2) {
/* Limit to DDR3-800 */
if (freq > 400) {
freq = 400;
printk(BIOS_DEBUG, "%s: More than 2 registered DIMMs on %dmV channel; limiting to DDR3-800\n", __func__, voltage_index_to_mv(voltage));
}
} else if (count == 2) {
/* Limit to DDR3-1066 */
if (freq > 533) {
freq = 533;
printk(BIOS_DEBUG, "%s: 2 registered DIMMs on %dmV channel; limiting to DDR3-1066\n", __func__, voltage_index_to_mv(voltage));
}
} else {
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: 1 registered DIMM on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
} else {
/* K10 BKDG Rev. 3.62 Table 33 */
/* Limit to DDR3-1333 */
if (freq > 666) {
freq = 666;
printk(BIOS_DEBUG, "%s: unbuffered DIMMs on %dmV channel; limiting to DDR3-1333\n", __func__, voltage_index_to_mv(voltage));
}
}
}
}
return freq;
}
