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misc: aarch64: Remove unused enter_in_current_el() function

This commit is contained in:
mintsuki 2023-09-16 14:28:33 -05:00
parent 5f7bcc0b1d
commit c5c43cb0fd
2 changed files with 0 additions and 50 deletions
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3
common/lib/misc.h
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@ -95,9 +95,6 @@ noreturn void stage3_common(void);
#if defined (__x86_64__) || defined (__i386__)
noreturn void common_spinup(void *fnptr, int args, ...);
#elif defined (__aarch64__)
noreturn void enter_in_current_el(uint64_t entry, uint64_t sp, uint64_t sctlr,
uint64_t target_x0);
noreturn void enter_in_el1(uint64_t entry, uint64_t sp, uint64_t sctlr,
uint64_t mair, uint64_t tcr, uint64_t ttbr0,
uint64_t ttbr1, uint64_t target_x0);

47
common/lib/spinup.asm_aarch64
View File

@ -2,53 +2,6 @@
.section .text
// noreturn void enter_in_current_el(uint64_t entry, uint64_t sp, uint64_t sctlr,
// uint64_t target_x0)
// Configure current EL state and jump to kernel. Used for Linux hence
// no paging register configuration (which requires SCTLR.M = 0).
.global enter_in_current_el
enter_in_current_el:
msr sp_el0, x1
// Sanity check that SCTLR.M = 0
and x8, x2, #0b1
cbnz x8, 99f
99:
wfi
b 99b
PICK_EL x8, 0f, 1f
0:
msr sctlr_el1, x2
dsb sy
isb
// Enter kernel in EL1
mov x8, #0x3c4
msr spsr_el1, x8
msr elr_el1, x0
mov x0, x3
ZERO_REGS_EXCEPT_X0
eret
1:
msr sctlr_el2, x2
dsb sy
isb
// Enter kernel in EL2
mov x8, #0x3c8
msr spsr_el2, x8
msr elr_el2, x0
mov x0, x3
ZERO_REGS_EXCEPT_X0
eret
// noreturn void enter_in_el1(uint64_t entry, uint64_t sp, uint64_t sctlr,
// uint64_t mair, uint64_t tcr, uint64_t ttbr0,
// uint64_t ttbr1, uint64_t target_x0)