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Implement __set_memory_registers

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This commit is contained in:
TuxSH 2018-02-28 02:37:08 +01:00
parent 924d469344
commit 93634d08e3
2 changed files with 27 additions and 0 deletions
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2
exosphere/linker.ld
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@ -27,6 +27,7 @@ SECTIONS
.cold_crt0 : .cold_crt0 :
{ {
. = ALIGN(64); . = ALIGN(64);
KEEP (*(.cold_crt0.text.start)) /* MUST be first */
KEEP (*(.cold_crt0.text*)) KEEP (*(.cold_crt0.text*))
KEEP (build/coldboot_init.o(.text*)) KEEP (build/coldboot_init.o(.text*))
*(.cold_crt0.rodata*) *(.cold_crt0.rodata*)
@ -44,6 +45,7 @@ SECTIONS
. = ALIGN(64); . = ALIGN(64);
__warmboot_crt0_lma__ = LOADADDR(.warm_crt0); __warmboot_crt0_lma__ = LOADADDR(.warm_crt0);
__warmboot_crt0_start__ = ABSOLUTE(.); __warmboot_crt0_start__ = ABSOLUTE(.);
KEEP (*(.warm_crt0.text.start)) /* Should be first */
KEEP (*(.warm_crt0.text*)) KEEP (*(.warm_crt0.text*))
KEEP (build/warmboot_init.o(.text*)) KEEP (build/warmboot_init.o(.text*))
*(.warm_crt0.rodata*) *(.warm_crt0.rodata*)

25
exosphere/src/start.s
View file

@ -97,6 +97,31 @@ __start_warm:
ldr x16, =__jump_to_main_warm ldr x16, =__jump_to_main_warm
br x16 br x16
/* Used by coldboot as well */
.section .warm_crt0.text.__set_memory_registers, "ax", %progbits
.global __set_memory_registers
.type __set_memory_registers, %function
__set_memory_registers:
msr cpuactlr_el1, x2
isb
msr scr_el3, x3
msr ttbr0_el3, x0
msr tcr_el3, x4
msr cptr_el3, x5
msr mair_el3, x6
msr vbar_el3, x1
/* Invalidate the entire TLB on the Inner Shareable domain */
isb
dsb ish
tlbi alle3is
dsb ish
isb
msr sctlr_el3, x7
isb
ret
.align 4 .align 4
.section .text.__jump_to_main_cold, "ax", %progbits .section .text.__jump_to_main_cold, "ax", %progbits
__jump_to_main_cold: __jump_to_main_cold: