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riscv : add riscv qemu virt support and fix fs bit error in mstatus

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This commit is contained in:
Jer6y
2024-10-25 20:03:11 +08:00
parent 485a02faec
commit d24da0e2ea
20 changed files with 1463 additions and 0 deletions
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25
ports/risc-v64/gnu/example_build/qemu_virt/hwtimer.c Normal file
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#include "tx_port.h"
#include "csr.h"
#include "hwtimer.h"
#define CLINT (0x02000000L)
#define CLINT_TIME (CLINT+0xBFF8)
#define CLINT_TIMECMP(hart_id) (CLINT+0x4000+8*(hart_id))
int hwtimer_init(void)
{
int hart = riscv_get_core();
uint64_t time = *((uint64_t*)CLINT_TIME);
*((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
return 0;
}
int hwtimer_handler(void)
{
int hart = riscv_get_core();
uint64_t time = *((uint64_t*)CLINT_TIME);
*((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
return 0;
}