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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * (C) Copyright 2013
- * David Feng <fenghua@phytium.com.cn>
- */
- #include <asm-offsets.h>
- #include <config.h>
- #include <linux/linkage.h>
- #include <asm/macro.h>
- .pushsection .text.armv8_switch_to_el2, "ax"
- ENTRY(armv8_switch_to_el2)
- switch_el x6, 1f, 0f, 0f
- 0:
- cmp x5, #ES_TO_AARCH64
- b.eq 2f
- /*
- * When loading 32-bit kernel, it will jump
- * to secure firmware again, and never return.
- */
- bl armv8_el2_to_aarch32
- 2:
- /*
- * x4 is kernel entry point or switch_to_el1
- * if CONFIG_ARMV8_SWITCH_TO_EL1 is defined.
- * When running in EL2 now, jump to the
- * address saved in x4.
- */
- br x4
- 1: armv8_switch_to_el2_m x4, x5, x6
- ENDPROC(armv8_switch_to_el2)
- .popsection
- .pushsection .text.armv8_switch_to_el1, "ax"
- ENTRY(armv8_switch_to_el1)
- switch_el x6, 0f, 1f, 0f
- 0:
- /* x4 is kernel entry point. When running in EL1
- * now, jump to the address saved in x4.
- */
- br x4
- 1: armv8_switch_to_el1_m x4, x5, x6
- ENDPROC(armv8_switch_to_el1)
- .popsection
- .pushsection .text.armv8_el2_to_aarch32, "ax"
- WEAK(armv8_el2_to_aarch32)
- ret
- ENDPROC(armv8_el2_to_aarch32)
- .popsection
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