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Merge pull request #1041 from gsomlo/gls-vex-smp-fix 

cpu/vexriscv_smp/crt0.S: only boot core should run data_init
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enjoy-digital 2021-09-22 19:35:47 +02:00 committed by GitHub
parent 60c6077c32 23b2ac2013
commit 1d302c56da
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1 changed files with 14 additions and 15 deletions
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litex/soc/cores/cpu/vexriscv_smp/crt0.S
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@ -63,23 +63,9 @@ crt_init:
csrw mtvec, a0 csrw mtvec, a0
sw x0, smp_lottery_lock, a1 sw x0, smp_lottery_lock, a1
data_init:
la a0, _fdata
la a1, _edata
la a2, _fdata_rom
data_loop:
beq a0,a1,data_done
lw a3,0(a2)
sw a3,0(a0)
add a0,a0,4
add a2,a2,4
j data_loop
data_done:
smp_tyranny: smp_tyranny:
csrr a0, mhartid csrr a0, mhartid
beqz a0, bss_init beqz a0, data_init
call smp_slave
smp_slave: smp_slave:
lw a0, smp_lottery_lock lw a0, smp_lottery_lock
@ -93,6 +79,19 @@ smp_slave:
lw x13, smp_lottery_target lw x13, smp_lottery_target
jr x13 jr x13
data_init:
la a0, _fdata
la a1, _edata
la a2, _fdata_rom
data_loop:
beq a0,a1,data_done
lw a3,0(a2)
sw a3,0(a0)
add a0,a0,4
add a2,a2,4
j data_loop
data_done:
bss_init: bss_init:
la a0, _fbss la a0, _fbss
la a1, _ebss la a1, _ebss