Some mainboards need to disable the power button to avoid turning off
right after being turned on, while other boards ship with a jumper over
the power button and should allow the user to configure the behavior.
This adds infrastructure in the form of four mutually exclusive options
which can be selected in a mainboard Kconfig (power button forced on/off,
and user-controllable with default on/off) and one result bool which
source code can test. (Enable the button or not.)
The options have been implemented in CS5536 code and for all mainboards
which select SOUTHBRIDGE_AMD_CS5536, but should be used also by other
chipsets where applicable. Note that if chipset code uses the result
bool ENABLE_POWER_BUTTON, then every board using that chipset must
select one out of the four control options in order to build.
All touched boards should have unchanged behavior, except
pcengines/alix1c, traverse/geos and lippert/hurricane-lx where the
power button can now be configured by the user.
Build tested for alix1c, alix2d, hurricane-lx and wyse-s50. Confirmed
to work as advertised on alix1c both with button enabled and disabled.
Includes additional traverse/geos changes from Nathan and
lippert/hurricane-lx changes from Jens to correctly use the new
feature on those boards.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Aurelien Guillaume <aurelien@iwi.me>
Acked-by: Nils Jacobs <njacobs8@hetnet.nl>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5948
2b7e53f0-3cfb-0310-b3e9-
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hex
default 0x10
+# The four POWER_BUTTON_DEFAULT_ENABLE, POWER_BUTTON_DEFAULT_DISABLE,
+# POWER_BUTTON_FORCE_ENABLE and POWER_BUTTON_FORCE_DISABLE options are
+# mutually exclusive. One of these options must be selected in the
+# mainboard Kconfig if the chipset supports enabling and disabling of
+# the power button. Chipset code uses the ENABLE_POWER_BUTTON option set
+# in mainboard/Kconfig to know if the button should be enabled or not.
+
+config POWER_BUTTON_DEFAULT_ENABLE
+ def_bool n
+ help
+ Select when the board has a power button which can optionally be
+ disabled by the user.
+
+config POWER_BUTTON_DEFAULT_DISABLE
+ def_bool n
+ help
+ Select when the board has a power button which can optionally be
+ enabled by the user, e.g. when the board ships with a jumper over
+ the power switch contacts.
+
+config POWER_BUTTON_FORCE_ENABLE
+ def_bool n
+ help
+ Select when the board requires that the power button is always
+ enabled.
+
+config POWER_BUTTON_FORCE_DISABLE
+ def_bool n
+ help
+ Select when the board requires that the power button is always
+ disabled, e.g. when it has been hardwired to ground.
+
+config POWER_BUTTON_IS_OPTIONAL
+ bool
+ default y if POWER_BUTTON_DEFAULT_ENABLE || POWER_BUTTON_DEFAULT_DISABLE
+ default n if !(POWER_BUTTON_DEFAULT_ENABLE || POWER_BUTTON_DEFAULT_DISABLE)
+ help
+ Internal option that controls ENABLE_POWER_BUTTON visibility.
+
source src/Kconfig.deprecated_options
default 0x200000 if COREBOOT_ROMSIZE_KB_2048
default 0x400000 if COREBOOT_ROMSIZE_KB_4096
+config ENABLE_POWER_BUTTON
+ bool "Enable the power button" if POWER_BUTTON_IS_OPTIONAL
+ default y if POWER_BUTTON_DEFAULT_ENABLE
+ default n if POWER_BUTTON_DEFAULT_DISABLE
+ help
+ The selected mainboard can optionally have the power button tied
+ to ground with a jumper so that the button appears to be
+ constantly depressed. If this option is enabled and the jumper is
+ installed then the board will turn on, but turn off again after a
+ short timeout, usually 4 seconds.
+
+ Select Y here if you have removed the jumper and want to use an
+ actual power button. Select N if you have the jumper installed.
+
+config ENABLE_POWER_BUTTON
+ def_bool y if !POWER_BUTTON_IS_OPTIONAL && POWER_BUTTON_FORCE_ENABLE
+ def_bool n if !POWER_BUTTON_IS_OPTIONAL && POWER_BUTTON_FORCE_DISABLE
+
endmenu
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select UDELAY_TSC
select HAVE_PIRQ_TABLE
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_DISABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select HAVE_PIRQ_TABLE
select PIRQ_ROUTE
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
config BOARD_OLD_REVISION
bool "Board is old pre-3.0 revision"
default n
+ select POWER_BUTTON_DEFAULT_DISABLE
help
Look on the bottom side for a number like 406-0001-30. The last 2
digits state the PCB revision (3.0 in this example). For 2.0 or older
boards choose Y, for 3.0 and newer say N.
+ Old revision boards need a jumper shorting the power button to
+ power on automatically. You may enable the button only after this
+ jumper has been removed. New revision boards are not restricted
+ in this way, and always have the power button enabled.
+
+config POWER_BUTTON_FORCE_ENABLE
+ def_bool y if !BOARD_OLD_REVISION
+
config ONBOARD_UARTS_RS485
bool "Switch on-board serial ports to RS485"
default n
cpuRegInit(0, DIMM0, DIMM1, DRAM_TERMINATED);
-#if CONFIG_BOARD_OLD_REVISION
- /*
- * Old revision boards need a jumper shorting the power button to power
- * on automatically. So we must disable the button's fail-safe function,
- * or the board will shut down after 4 s.
- */
- outl(0, PMS_IO_BASE + PM_FSD); // Fail-Save Delay register
-#else
+#if !CONFIG_BOARD_OLD_REVISION
int err;
/* bit0 = Spread Spectrum */
if ((err = smc_send_config(SMC_CONFIG))) {
# Board is equipped with a 1 MB SPI flash, however, due to limitations
# of the IT8712F Super I/O, only the top 512 KB are directly mapped.
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
# Standard chip is a 512 KB FWH. Replacing it with a 1 MB
# SST 49LF008A is possible.
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
# Board is equipped with a 1 MB SPI flash, however, due to limitations
# of the IT8712F Super I/O, only the top 512 KB are directly mapped.
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_DEFAULT_DISABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_FORCE_DISABLE
config MAINBOARD_DIR
string
/** Early mainboard specific GPIO setup. */
static void mb_gpio_init(void)
{
- /*
- * Disable power button, since it is hardwired to ground on this board,
- * and the power would be cut off atfer a 4-second delay otherwise.
- */
- outl(0x00020000, PMS_IO_BASE + 0x40);
-
/*
* Enable LEDs GPIO outputs to light up the leds
* This is how the original tinyBIOS sets them after boot.
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_1024
+ select POWER_BUTTON_DEFAULT_DISABLE
config MAINBOARD_DIR
string
select PIRQ_ROUTE
select UDELAY_TSC
select BOARD_ROMSIZE_KB_512
+ select POWER_BUTTON_FORCE_ENABLE
config MAINBOARD_DIR
string
select HAVE_PIRQ_TABLE
select PIRQ_ROUTE
select BOARD_ROMSIZE_KB_256
+ select POWER_BUTTON_FORCE_DISABLE
config MAINBOARD_DIR
string
cs5536_early_setup();
- /* disable the power button */
- outl(0x00, PMS_IO_BASE + 0x40);
-
/* cs5536_disable_internal_uart disable them. Set them up now... */
cs5536_setup_onchipuart(1);
static void cs5536_setup_power_button(void)
{
- /* Power Button Setup */
+#if CONFIG_ENABLE_POWER_BUTTON
outl(0x40020000, PMS_IO_BASE + 0x40);
+#endif
/* setup WORK_AUX/GPIO24, it is the external signal for 5536
* vsb_work_aux controls all voltage rails except Vstandby & Vmem.
projects / coreboot.git / commitdiff