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lib: sbi_hart: Shorten the code to set MPV bit

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MPV bit is set when the value of next_virt boolean variable equals
true. Since the value of next_virt is either 0 or 1, we can set
MPV bit without if-else logic.

Signed-off-by: Che-Chia Chang <alvinga@andestech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
gagachang
2022-07-15 01:29:41 +08:00
committed by Anup Patel
parent caa5eeacac
commit 0374ccf3f1
1 changed files with 3 additions and 10 deletions
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13
lib/sbi/sbi_hart.c
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@@ -769,19 +769,12 @@ sbi_hart_switch_mode(unsigned long arg0, unsigned long arg1,
#if __riscv_xlen == 32
if (misa_extension('H')) {
valH = csr_read(CSR_MSTATUSH);
if (next_virt)
valH = INSERT_FIELD(valH, MSTATUSH_MPV, 1);
else
valH = INSERT_FIELD(valH, MSTATUSH_MPV, 0);
valH = INSERT_FIELD(valH, MSTATUSH_MPV, next_virt);
csr_write(CSR_MSTATUSH, valH);
}
#else
if (misa_extension('H')) {
if (next_virt)
val = INSERT_FIELD(val, MSTATUS_MPV, 1);
else
val = INSERT_FIELD(val, MSTATUS_MPV, 0);
}
if (misa_extension('H'))
val = INSERT_FIELD(val, MSTATUS_MPV, next_virt);
#endif
csr_write(CSR_MSTATUS, val);
csr_write(CSR_MEPC, next_addr);