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arm timer is working on QEMU gicv2!!!

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This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-08-09 00:00:00 +00:00
parent d2c39c280d
commit 975b15b814
3 changed files with 93 additions and 11 deletions
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16
baremetal/arch/aarch64/timer.c
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@@ -4,7 +4,6 @@
#include <lkmc.h>
#include <lkmc/gicv3.h>
#define CLOCK_FREQUENCY 10
#define INTERRUPT_FREQUENCY 1
void enable_irq(void) {
@@ -36,7 +35,7 @@ void psw_disable_and_save_interrupt(uint64_t *pswp) {
void disable_cntv(void) {
lkmc_sysreg_write_cntv_ctl_el0(
lkmc_sysreg_read_cntv_ctl_el0() &
LKMC_SYSREG_CNTV_CTL_ENABLE
~LKMC_SYSREG_CNTV_CTL_ENABLE
);
}
@@ -67,7 +66,7 @@ void lkmc_vector_trap_handler(
puts("IRQ not found!");
goto restore_irq_out;
} else {
printf("IRQ found: 0x%" PRIX32 "\n", irq);
printf("IRQ number 0x%" PRIX32 "\n", irq);
}
gicd_disable_int(irq);
gic_v3_eoi(irq);
@@ -76,10 +75,13 @@ void lkmc_vector_trap_handler(
disable_cntv();
gicd_clear_pending(TIMER_IRQ);
lkmc_sysreg_print_cntvct_el0();
raw_write_cntv_cval_el0(
uint64_t cntv_cval_el0 =
lkmc_sysreg_read_cntvct_el0() +
CLOCK_FREQUENCY / INTERRUPT_FREQUENCY
);
lkmc_sysreg_read_cntfrq_el0() / INTERRUPT_FREQUENCY
;
lkmc_sysreg_write_cntv_cval_el0(cntv_cval_el0);
lkmc_sysreg_print_cntv_cval_el0();
puts("");
enable_cntv();
}
gicd_enable_int(irq);
@@ -98,12 +100,12 @@ int main(void) {
lkmc_sysreg_print_cntvct_el0();
lkmc_sysreg_print_cntvct_el0();
lkmc_sysreg_print_cntvct_el0();
puts("");
gic_v3_initialize();
{
/*uint64_t ticks, current_cnt;*/
/*uint32_t cntfrq;*/
lkmc_sysreg_write_cntfrq_el0(CLOCK_FREQUENCY);
/*ticks = cntfrq;*/
/*current_cnt = lkmc_sysreg_read_cntvct_el0();*/
/*lkmc_sysreg_write_cntv_cval_el0(current_cnt + ticks);*/