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Write MSIP by using memory-mapped control register

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The machine-level MSIP bits are written by accesses to memory-mapped
control registers. Only use CSR instruction for SSIP and USIP.

There is no effect that using CSR instruction to write MSIP when testing
on unleashed board and QEMU.

Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Zong Li 2019-09-26 20:14:02 -07:00 • committed by Anup Patel
parent 0a482e2edb
commit 1ed9eb255d
1 changed files with 1 additions and 1 deletions
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2
lib/sbi/sbi_hart.c
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@ -341,7 +341,7 @@ void sbi_hart_wait_for_coldboot(struct sbi_scratch *scratch, u32 hartid)
spin_unlock(&coldboot_wait_bitmap_lock);
} while (!(mipval & MIP_MSIP));
csr_clear(CSR_MIP, MIP_MSIP);
sbi_platform_ipi_clear(plat, hartid);
}
void sbi_hart_wake_coldboot_harts(struct sbi_scratch *scratch, u32 hartid)