37 lines
642 B
ArmAsm
37 lines
642 B
ArmAsm
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/* 8字节对齐，否则会出错*/
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.align 3
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.globl sp_addr
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.section ".data.boot"
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sp_addr:
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.quad stack + 4096 - 8 //pt regs is 320 bytes.
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.align 3
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.globl knl_entry
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.section ".data.boot"
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knl_entry:
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.quad 0
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.section ".text.boot"
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.globl _start
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_start:
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msr daifset, #0xf // 关闭中断
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//进入多核启动流程
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mrs x0, mpidr_el1 // 读取该寄存器获取处理器id
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and x0, x0,#0xFF // Check processor id
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cbz x0, master // Hang for all non-primary CPU
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//spin table
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ldr x1, = knl_entry
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spin_jump:
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ldr x3, [x1, #0]
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cbz x3, spin_jump
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br x3
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b .
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master:
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ldr x8, = sp_addr
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ldr x9, [x8]
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mov sp, x9
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bl main
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b . |