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third-party: copy data section at boot

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-01-25 14:27:43 +13:00
parent c447457ffc
commit d31bcea114
1 changed files with 12 additions and 0 deletions
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12
third_party/libbase/crt0-vexriscv.S vendored
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@ -71,6 +71,18 @@ bss_loop:
j bss_loop
bss_done:
/* Load DATA */
la t0, _erodata
la t1, _fdata
la t2, _edata
3:
lw t3, 0(t0)
sw t3, 0(t1)
/* _edata is aligned to 16 bytes. Use word-xfers. */
addi t0, t0, 4
addi t1, t1, 4
bltu t1, t2, 3b
li a0, 0x880 //880 enable timer + external interrupt sources (until mstatus.MIE is set, they will never trigger an interrupt)
csrw mie,a0