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hw/riscv: clint: Avoid using hard-coded timebase frequency

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At present the CLINT timestamp is using a hard-coded timebase
frequency value SIFIVE_CLINT_TIMEBASE_FREQ. This might not be
true for all boards.

Add a new 'timebase-freq' property to the CLINT device, and
update various functions to accept this as a parameter.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1598924352-89526-16-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Bin Meng 2020-09-01 09:39:10 +08:00 • committed by Alistair Francis
parent ce908a2f6f
commit a47ef6e93a
10 changed files with 40 additions and 22 deletions
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3
hw/riscv/spike.c
View file

@ -242,7 +242,8 @@ static void spike_board_init(MachineState *machine)
sifive_clint_create(
memmap[SPIKE_CLINT].base + i * memmap[SPIKE_CLINT].size,
memmap[SPIKE_CLINT].size, base_hartid, hart_count,
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, false);
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE,
SIFIVE_CLINT_TIMEBASE_FREQ, false);
}
/* register system main memory (actual RAM) */