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体验新版 GitCode,发现更多精彩内容 >>
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b39392a9
编写于
12月 16, 2004
作者:
S
stroese
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
CPU speed calculation updated (fixed a rounding problem)
上级
0912e483
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
14 addition
and
34 deletion
+14
-34
cpu/ppc4xx/speed.c
cpu/ppc4xx/speed.c
+14
-34
未找到文件。
cpu/ppc4xx/speed.c
浏览文件 @
b39392a9
...
...
@@ -132,10 +132,10 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
m
=
sysInfo
->
pllFbkDiv
*
sysInfo
->
pllFwdDivB
*
sysInfo
->
pllPlbDiv
;
}
sysInfo
->
freqVCO
Mhz
=
(
1000000
*
m
)
/
sysClkPeriodPs
;
sysInfo
->
freqProcessor
=
(
sysInfo
->
freqVCOMhz
*
1000000
)
/
sysInfo
->
pllFwdDiv
;
sysInfo
->
freqP
LB
=
(
sysInfo
->
freqVCOMhz
*
1000000
)
/
(
sysInfo
->
pllFwdDivB
*
sysInfo
->
pllPlbDiv
);
sysInfo
->
freqVCO
Hz
=
(
1000000000000LL
*
(
unsigned
long
long
)
m
)
/
(
unsigned
long
long
)
sysClkPeriodPs
;
sysInfo
->
freqP
rocessor
=
sysInfo
->
freqVCOHz
/
sysInfo
->
pllFwdDiv
;
sysInfo
->
freqPLB
=
sysInfo
->
freqVCOHz
/
(
sysInfo
->
pllFwdDivB
*
sysInfo
->
pllPlbDiv
);
}
else
{
/*
* Check pllFwdDiv to see if running in bypass mode where the CPU speed
...
...
@@ -148,26 +148,14 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
sysInfo
->
freqProcessor
=
CONFIG_SYS_CLK_FREQ
;
sysInfo
->
freqPLB
=
CONFIG_SYS_CLK_FREQ
/
sysInfo
->
pllPlbDiv
;
}
else
{
sysInfo
->
freqVCOMhz
=
(
1000000
*
sysInfo
->
pllFwdDiv
*
sysInfo
->
pllFbkDiv
*
sysInfo
->
pllPlbDiv
)
/
sysClkPeriodPs
;
if
(
sysInfo
->
freqVCOMhz
>=
VCO_MIN
&&
sysInfo
->
freqVCOMhz
<=
VCO_MAX
)
{
sysInfo
->
freqPLB
=
(
ONE_BILLION
/
((
sysClkPeriodPs
*
10
)
/
sysInfo
->
pllFbkDiv
))
*
10000
;
sysInfo
->
freqProcessor
=
sysInfo
->
freqPLB
*
sysInfo
->
pllPlbDiv
;
}
else
{
printf
(
"
\n
Invalid VCO frequency calculated : %ld MHz
\a\n
"
,
sysInfo
->
freqVCOMhz
);
printf
(
"It must be between %d-%d MHz
\a\n
"
,
VCO_MIN
,
VCO_MAX
);
printf
(
"PLL Mode reg : %8.8lx
\a\n
"
,
pllmr
);
hang
();
}
sysInfo
->
freqVCOHz
=
(
1000000000000LL
*
(
unsigned
long
long
)
sysInfo
->
pllFwdDiv
*
(
unsigned
long
long
)
sysInfo
->
pllFbkDiv
*
(
unsigned
long
long
)
sysInfo
->
pllPlbDiv
)
/
(
unsigned
long
long
)
sysClkPeriodPs
;
sysInfo
->
freqPLB
=
(
ONE_BILLION
/
((
sysClkPeriodPs
*
10
)
/
sysInfo
->
pllFbkDiv
))
*
10000
;
sysInfo
->
freqProcessor
=
sysInfo
->
freqPLB
*
sysInfo
->
pllPlbDiv
;
}
}
}
...
...
@@ -376,7 +364,8 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
/*
* Determine VCO clock frequency
*/
sysInfo
->
freqVCOMhz
=
(
1000000
*
m
)
/
sysClkPeriodPs
;
sysInfo
->
freqVCOHz
=
(
1000000000000LL
*
(
unsigned
long
long
)
m
)
/
(
unsigned
long
long
)
sysClkPeriodPs
;
/*
* Determine CPU clock frequency
...
...
@@ -398,15 +387,6 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
* Determine PLB clock frequency
*/
sysInfo
->
freqPLB
=
sysInfo
->
freqProcessor
/
sysInfo
->
pllPlbDiv
;
if
(
!
((
sysInfo
->
freqVCOMhz
>=
VCO_MIN
)
&&
(
sysInfo
->
freqVCOMhz
<=
VCO_MAX
)))
{
printf
(
"
\n
Invalid VCO frequency calculated : %ld MHz
\a\n
"
,
sysInfo
->
freqVCOMhz
);
printf
(
"It must be between %d-%d MHz
\a\n
"
,
VCO_MIN
,
VCO_MAX
);
printf
(
"PLL Mode reg 0 : %8.8lx
\a\n
"
,
pllmr0
);
printf
(
"PLL Mode reg 1 : %8.8lx
\a\n
"
,
pllmr1
);
hang
();
}
}
...
...
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