函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\boot\a20.c Create Date:2022-07-27 08:25:35
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：键盘鼠标驱动初始化

函数原型：int enable_a20(void)

返回类型：int

参数：无

130  loops等于Number of times to try
133  当loops自减循环
136  如果Quick test to see if A20 is already enabled 则返回:0
140  enable_a20_bios()
141  如果Quick test to see if A20 is already enabled 则返回:0
145  kbc_err等于empty_8042()
147  如果Quick test to see if A20 is already enabled 则返回:0
150  如果非kbc_err则
151  enable_a20_kbc()
152  如果Longer test that actually waits for A20 to come on line; thisis useful when dealing with the KBC or other slow external circuitry. 则返回:0
157  enable_a20_fast()
158  如果Longer test that actually waits for A20 to come on line; thisis useful when dealing with the KBC or other slow external circuitry. 则返回:0
162  返回:负1
调用者
名称描述
go_to_protected_mode进入保护模式