Function report |
Source Code:arch\x86\kernel\early_printk.c |
Create Date:2022-07-28 08:42:31 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:early_serial_hw_init
Proto:static __init void early_serial_hw_init(unsigned divisor)
Type:void
Parameter:
| Type | Parameter | Name |
|---|---|---|
| unsigned | divisor |
| 137 | serial_out(yS0 , Line control , 0x3) |
| 138 | serial_out(yS0 , Interrupt Enable , 0) |
| 139 | serial_out(yS0 , FIFO control , 0) |
| 140 | serial_out(yS0 , Modem control , 0x3) |
| 142 | c = serial_in(yS0 , Line control ) |
| 143 | serial_out(yS0 , Line control , c | DLAB) |
| 144 | serial_out(yS0 , Divisor Latch Low , divisor & 0xff) |
| 145 | serial_out(yS0 , Divisor latch High , (divisor >> 8) & 0xff) |
| 146 | serial_out(yS0 , Line control , c & ~DLAB) |
| Name | Describe |
|---|---|
| early_serial_init |
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