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https://github.com/brain-hackers/u-boot-brain
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cae39ae365
Microblaze is storing reset vector at address 0x0. It means soft reset can be done by just jumping to this address. This code was in platform code but sysreset interface is providing enough capabilities to have more options how to reset the system. It can go from gpio reset through watchdog reset till soft reset. The driver has not compatible string because this is cpu specific and DM core is not able to detect compatible string in DT root that's why this driver will be instantiated from platform code by calling device_bind_driver(gd->dm_root, "mb_soft_reset", "reset_soft", NULL); It should be bind as the last reset method to ensure that hw reset is called before this. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
#
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# System reset devices
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#
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menu "System reset device drivers"
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config SYSRESET
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bool "Enable support for system reset drivers"
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depends on DM
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help
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Enable system reset drivers which can be used to reset the CPU or
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board. Each driver can provide a reset method which will be called
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to effect a reset. The uclass will try all available drivers when
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reset_walk() is called.
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if SYSRESET
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config SYSRESET_GPIO
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bool "Enable support for GPIO reset driver"
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select GPIO
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help
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Reset support via GPIO pin connected reset logic. This is used for
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example on Microblaze where reset logic can be controlled via GPIO
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pin which triggers cpu reset.
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config SYSRESET_MICROBLAZE
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bool "Enable support for Microblaze soft reset"
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depends on MICROBLAZE
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help
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This is soft reset on Microblaze which does jump to 0x0 address.
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config SYSRESET_PSCI
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bool "Enable support for PSCI System Reset"
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depends on ARM_PSCI_FW
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help
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Enable PSCI SYSTEM_RESET function call. To use this, PSCI firmware
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must be running on your system.
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endif
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config SYSRESET_SYSCON
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bool "Enable support for mfd syscon reboot driver"
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select REGMAP
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select SYSCON
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help
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Reboot support for generic SYSCON mapped register reset.
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config SYSRESET_WATCHDOG
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bool "Enable support for watchdog reboot driver"
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select WDT
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help
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Reboot support for generic watchdog reset.
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endmenu
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