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kconfig: move CONFIG_SYS_HZ to lib/Kconfig

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CONFIG_SYS_HZ is always defined as 1000 in config_fallbacks.h
(but some boards still have redundant definitions).

This commit moves the definition and the document in README to
Kconfig.  Since lib/Kconfig can assure that CONFIG_SYS_HZ is 1000,
the sanity check in lib/time.c should be removed.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Masahiro Yamada 2014-10-24 01:30:40 +09:00 committed by Tom Rini
parent b2b8a6967a
commit 8c688bc4de
12 changed files with 8 additions and 25 deletions
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7
README
View File

@ -623,13 +623,6 @@ The following options need to be configured:
exists, unlike the similar options in the Linux kernel. Do not
set these options unless they apply!
- CPU timer options:
CONFIG_SYS_HZ
The frequency of the timer returned by get_timer().
get_timer() must operate in milliseconds and this CONFIG
option must be set to 1000.
- Linux Kernel Interface:
CONFIG_CLOCKS_IN_MHZ

4
include/config_fallbacks.h
View File

@ -79,10 +79,6 @@
#define CONFIG_SYS_PROMPT "=> "
#endif
#ifndef CONFIG_SYS_HZ
#define CONFIG_SYS_HZ 1000
#endif
#ifndef CONFIG_FIT_SIGNATURE
#define CONFIG_IMAGE_FORMAT_LEGACY
#endif

1
include/configs/cm_fx6.h
View File

@ -19,7 +19,6 @@
#define CONFIG_MX6
#define CONFIG_SYS_LITTLE_ENDIAN
#define CONFIG_MACH_TYPE 4273
#define CONFIG_SYS_HZ 1000
#ifndef CONFIG_SPL_BUILD
#define CONFIG_DM

1
include/configs/edb93xx.h
View File

@ -89,7 +89,6 @@
#define CONFIG_EP93XX 1 /* in a Cirrus Logic 93xx SoC */
#define CONFIG_SYS_CLK_FREQ 14745600 /* EP93xx has a 14.7456 clock */
#define CONFIG_SYS_HZ 1000 /* decr freq: 1 ms ticks */
#undef CONFIG_USE_IRQ /* Don't need IRQ/FIQ */
/* Monitor configuration */

1
include/configs/ks2_evm.h
View File

@ -23,7 +23,6 @@
#define CONFIG_ARMV7
#define CONFIG_ARCH_CPU_INIT
#define CONFIG_SYS_ARCH_TIMER
#define CONFIG_SYS_HZ 1000
#define CONFIG_SYS_TEXT_BASE 0x0c001000
#define CONFIG_SPL_TARGET "u-boot-spi.gph"
#define CONFIG_SYS_DCACHE_OFF

1
include/configs/ls1021aqds.h
View File

@ -360,7 +360,6 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_SYS_MEMTEST_END 0x9fffffff
#define CONFIG_SYS_LOAD_ADDR 0x82000000
#define CONFIG_SYS_HZ 1000
/*
* Stack sizes

1
include/configs/ls1021atwr.h
View File

@ -261,7 +261,6 @@
#define CONFIG_SYS_MEMTEST_END 0x9fffffff
#define CONFIG_SYS_LOAD_ADDR 0x82000000
#define CONFIG_SYS_HZ 1000
/*
* Stack sizes

2
include/configs/ls2085a_common.h
View File

@ -253,8 +253,6 @@
#define CONFIG_NR_DRAM_BANKS 3
#define CONFIG_SYS_HZ 1000
#define CONFIG_HWCONFIG
#define HWCONFIG_BUFFER_SIZE 128

2
include/configs/sunxi-common.h
View File

@ -105,8 +105,6 @@
/* standalone support */
#define CONFIG_STANDALONE_LOAD_ADDR 0x42000000
#define CONFIG_SYS_HZ 1000
/* baudrate */
#define CONFIG_BAUDRATE 115200

1
include/configs/tqma6.h
View File

@ -450,7 +450,6 @@
#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
#define CONFIG_SYS_HZ 1000
#define CONFIG_CMDLINE_EDITING
#define CONFIG_STACKSIZE (128u * SZ_1K)

8
lib/Kconfig
View File

@ -8,4 +8,12 @@ config CC_OPTIMIZE_LIBS_FOR_SPEED
If unsure, say N.
config SYS_HZ
int
default 1000
help
The frequency of the timer returned by get_timer().
get_timer() must operate in milliseconds and this option must be
set to 1000.
endmenu

4
lib/time.c
View File

@ -10,10 +10,6 @@
#include <div64.h>
#include <asm/io.h>
#if CONFIG_SYS_HZ != 1000
#warning "CONFIG_SYS_HZ must be 1000 and should not be defined by platforms"
#endif
#ifndef CONFIG_WD_PERIOD
# define CONFIG_WD_PERIOD (10 * 1000 * 1000) /* 10 seconds default */
#endif