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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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4
include/hw/riscv/sifive_clint.h
View file

@ -39,11 +39,13 @@ typedef struct SiFiveCLINTState {
uint32_t timecmp_base;
uint32_t time_base;
uint32_t aperture_size;
uint32_t timebase_freq;
} SiFiveCLINTState;
DeviceState *sifive_clint_create(hwaddr addr, hwaddr size,
uint32_t hartid_base, uint32_t num_harts, uint32_t sip_base,
uint32_t timecmp_base, uint32_t time_base, bool provide_rdtime);
uint32_t timecmp_base, uint32_t time_base, uint32_t timebase_freq,
bool provide_rdtime);
enum {
SIFIVE_SIP_BASE = 0x0,