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* ARM: Add PSCI supportSascha Hauer2017-02-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains the barebox implementation for the ARM "Power State Coordination Interface" (PSCI). The interface is aimed at the generalization of code in the following power management scenarios: * Core idle management. * Dynamic addition and removal of cores, and secondary core boot. * big.LITTLE migration. * System shutdown and reset. In practice, all that's currently implemented is a way to enable the secondary core one some SoCs. With PSCI the Kernel is either started in nonsecure or in Hypervisor mode and PSCI is used to apply power to the secondary cores. The start mode is passed in the global.bootm.secure_state variable. This enum can contain "secure" (Kernel is started in secure mode, means no PSCI), "nonsecure" (Kernel is started in nonsecure mode, PSCI available) or "hyp" (Kernel is started in hyp mode, meaning it can support virtualization). We currently only support putting the secure monitor code into SDRAM, which means we always steal some amount of memory from the Kernel. To keep things simple for now we simply keep the whole barebox binary in memory The PSCI support has been tested on i.MX7 only so far. The only supported operations are CPU_ON and CPU_OFF. The PSCI and secure monitor code is based on the corresponding U-Boot code. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* feature_list: a way to pass hardware info to the kernelVicente Bergas2013-01-211-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | Hi Sascha, I've made the changes you suggested in this resent patch. Everything related to custom ATAGs has been moved to the board directory. The generic code does not make any references to feature lists or bootloader versions. About the setup_feature_list prototype: it has been renamed to atag_appender it's not a function, it's a pointer to a function. Can it have a prototype other than it's own declaration? All non-related changes has been dropped. They were checkpatch.pl warnings unrelated to this patch. Regards, Vicente. Signed-off-by: Vicente Bergas <vicencb@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: let armlinux_set_* depend on the correct optionSascha Hauer2012-07-251-2/+1
| | | | | | | | We need inline versions of armlinux_set* exactly when CONFIG_ARM_LINUX is not set, because this is the symbol used to compile the non inline versions. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: call start_linux directly with initrd start/size and oftreeSascha Hauer2011-12-151-1/+2
| | | | | | | whoever calls this function is not necessarily aware of a struct image_data, so remove the dependency from the function. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: switch to generic memory banksSascha Hauer2011-09-231-3/+0
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: move armlinux_add_dram to location which is always compiledSascha Hauer2011-08-011-5/+2
| | | | | | | | | | | We want to use the memory banks later in the MMU which is independent of Linux, so move this to a location which is always compiled. Also, make the memory bank list global and add an iterator for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arm: introduce arm_add_mem_device to register dram deviceJean-Christophe PLAGNIOL-VILLARD2011-08-011-0/+3
| | | | | | this will automaticaly register the device to armlinux_add_dram Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: factor out a start_linux functionSascha Hauer2011-04-041-0/+4
| | | | | | This can be shared between the different boot commands. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: Add missing parameter name in armlinux_set_serialSascha Hauer2011-04-041-1/+1
| | | | | | | Also, make it a static inline function if compiled without arm linux support. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* armlinux: bugfix add parameter name into inline functionMichael Grzeschik2010-08-181-1/+1
| | | | | Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arm: add support for the serial ATAGBaruch Siach2010-08-041-0/+4
| | | | | Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arm: Add revision tag to boot parametersMarc Reilly2010-05-171-0/+6
| | | | | | | | Revision info required for some boards at boot time. Only adds if the system_rev has been set to non-zero. Signed-off-by: Marc Reilly <marc@cpdesign.com.au> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* [ARM] move include/asm-arm to arch/arm/include/asmJean-Christophe PLAGNIOL-VILLARD2009-10-221-0/+23
Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/proc* alone. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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