3 * David Feng <fenghua@phytium.com.cn>
5 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm-offsets.h>
10 #include <linux/linkage.h>
11 #include <asm/macro.h>
13 .pushsection .text.armv8_switch_to_el2, "ax"
14 ENTRY(armv8_switch_to_el2)
15 switch_el x6, 1f, 0f, 0f
17 cmp x5, #ES_TO_AARCH64
20 * When loading 32-bit kernel, it will jump
21 * to secure firmware again, and never return.
23 bl armv8_el2_to_aarch32
26 * x4 is kernel entry point or switch_to_el1
27 * if CONFIG_ARMV8_SWITCH_TO_EL1 is defined.
28 * When running in EL2 now, jump to the
29 * address saved in x4.
32 1: armv8_switch_to_el2_m x4, x5, x6
33 ENDPROC(armv8_switch_to_el2)
36 .pushsection .text.armv8_switch_to_el1, "ax"
37 ENTRY(armv8_switch_to_el1)
38 switch_el x6, 0f, 1f, 0f
40 /* x4 is kernel entry point. When running in EL1
41 * now, jump to the address saved in x4.
44 1: armv8_switch_to_el1_m x4, x5, x6
45 ENDPROC(armv8_switch_to_el1)
48 .pushsection .text.armv8_el2_to_aarch32, "ax"
49 WEAK(armv8_el2_to_aarch32)
51 ENDPROC(armv8_el2_to_aarch32)