4a15661ee0
If we were booted at EL2 (e.g. when passing -machine virt,virtualization=on), we need to use SMC instead of HVC for PSCI calls. Change psci_call() to do this and add a flag to do-qemuarm to allow testing this scenario.
32 lines
635 B
ArmAsm
32 lines
635 B
ArmAsm
/*
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* Copyright (c) 2014 Travis Geiselbrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <lk/asm.h>
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.section .text
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/* used to call into PSCI firmware (Power State Coordination Firmware) */
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FUNCTION(psci_call)
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#if ARCH_ARM
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hvc #0
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bx lr
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#else
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/* If booted at EL2 (bit 3 set of boot EL), we need to use SMC instead of HVC. */
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adrp x9, arm64_boot_el
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ldr x9, [x9, #:lo12:arm64_boot_el]
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tbnz x9, #3, .Lsmc
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hvc #0
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ret
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.Lsmc:
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smc #0
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ret
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#endif
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.ltorg
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