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f9886bc60f
I've encountered a problem when compiling the 'examples/api' directory for ARM64 in U-boot. The problem lies in the assembly code in 'examples/api/crt0.S' where the current CONFIG_ARM code is only 32-bit. When targeting ARM64, a 64-bit version is necessary. I have proposed a fix by including a 'CONFIG_ARM64' section in the assembly code as shown below. These changes have been check via https://github.com/u-boot/u-boot/pull/538. Feedback is welcome. Signed-off-by: Kalen Brunham <kalen.brunham@intel.com>
94 lines
1.3 KiB
ArmAsm
94 lines
1.3 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2007 Semihalf
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*
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* Written by: Rafal Jaworowski <raj@semihalf.com>
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*/
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#if defined(CONFIG_PPC)
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.text
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.globl _start
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_start:
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lis %r11, search_hint@ha
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addi %r11, %r11, search_hint@l
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stw %r1, 0(%r11)
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b main
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.globl syscall
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syscall:
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lis %r11, syscall_ptr@ha
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addi %r11, %r11, syscall_ptr@l
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lwz %r11, 0(%r11)
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mtctr %r11
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bctr
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#elif defined(CONFIG_ARM)
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.text
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.globl _start
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_start:
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ldr ip, =search_hint
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str sp, [ip]
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b main
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#elif defined(CONFIG_ARM64)
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.text
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.globl _start
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_start:
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ldr ip0, =search_hint
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str sp_el2, [ip0]
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b main
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.globl syscall
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syscall:
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ldr ip0, =syscall_ptr
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ldr pc_el2, [ip0]
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.globl syscall
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syscall:
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ldr ip, =syscall_ptr
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ldr pc, [ip]
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#elif defined(CONFIG_MIPS)
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#include <asm/asm.h>
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.text
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.globl __start
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.ent __start
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__start:
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PTR_S $sp, search_hint
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b main
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.end __start
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.globl syscall
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.ent syscall
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syscall:
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PTR_S $ra, return_addr
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PTR_L $t9, syscall_ptr
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jalr $t9
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nop
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PTR_L $ra, return_addr
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jr $ra
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nop
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.end syscall
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return_addr:
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.align 8
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.long 0
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#else
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#error No support for this arch!
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#endif
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.globl syscall_ptr
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syscall_ptr:
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.align 8
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.long 0
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.globl search_hint
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search_hint:
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.long 0
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