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Add handlers for timer interrupts

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git-svn-id: svn://coreboot.org/openbios/openbios-devel@182 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
2007-12-25 08:26:21 +00:00
parent 4657a8af34
commit 4f53b1dbc2
2 changed files with 36 additions and 7 deletions
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28
arch/sparc32/vectors.S
View File

@@ -43,6 +43,12 @@ trap_table:
#define BTRAP(lvl) ba bug; mov lvl, %g1; nop; nop;
#define BTRAPS(x) BTRAP(x) BTRAP(x+1) BTRAP(x+2) BTRAP(x+3) BTRAP(x+4) BTRAP(x+5) BTRAP(x+6) BTRAP(x+7)
#define TRAP_ENTRY_INTERRUPT(int_level) \
sethi %hi(irq_entry ## int_level), %l7; \
or %l7, %lo(irq_entry ## int_level), %l7; \
jmp %l7; \
nop
t_zero: b entry; nop; nop; nop;
BTRAP(0x1) BTRAP(0x2) BTRAP(0x3) BTRAP(0x4)
t_wovf: WINDOW_SPILL /* Window Overflow */
@@ -67,7 +73,12 @@ t_irq13: TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr.
t_irq14: TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
t_nmi: BAD_TRAP(0x1f) /* Level 15 (NMI) */
#else
BTRAPS(0x10) BTRAPS(0x18)
BTRAPS(0x10)
BTRAP(0x18) BTRAP(0x19)
t_irq10: TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */
BTRAP(0x1b) BTRAP(0x1c) BTRAP(0x1d)
t_irq14: TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
BTRAP(0x1f)
#endif
BTRAPS(0x20) BTRAPS(0x28)
BTRAPS(0x30) BTRAPS(0x38)
@@ -174,6 +185,21 @@ _forever:
b _forever ;
nop
irq_entry10:
sethi %hi(counter_regs), %l7
ld [%l7 + %lo(counter_regs)], %l7
sethi 0x10000, %l6
ld [%l7 + %l6], %g0
jmp %l1
rett %l2
irq_entry14:
sethi %hi(counter_regs), %l7
ld [%l7 + %lo(counter_regs)], %l7
ld [%l7], %g0
jmp %l1
rett %l2
/* Register window handlers */
#include "wof.S"
#include "wuf.S"

15
drivers/obio.c
View File

@@ -1067,10 +1067,11 @@ ob_power_init(uint64_t base, uint64_t offset, int intr)
fword("finish-device");
}
volatile struct sun4m_timer_regs *counter_regs;
static void
ob_counter_init(uint64_t base, unsigned long offset)
{
volatile struct sun4m_timer_regs *regs;
int i;
ob_new_obio_device("counter", NULL);
@@ -1101,17 +1102,19 @@ ob_counter_init(uint64_t base, unsigned long offset)
fword("property");
regs = map_io(base + (uint64_t)offset, sizeof(*regs));
regs->l10_timer_limit = (((1000000/100) + 1) << 10);
regs->cpu_timers[0].l14_timer_limit = 0;
counter_regs = map_io(base + (uint64_t)offset, sizeof(*counter_regs));
counter_regs->cfg = 0xffffffff;
counter_regs->l10_timer_limit = (((1000000/100) + 1) << 10);
counter_regs->cpu_timers[0].l14_timer_limit = 0;
counter_regs->cpu_timers[0].cntrl = 1;
for (i = 0; i < SUN4M_NCPU; i++) {
PUSH((unsigned long)&regs->cpu_timers[i]);
PUSH((unsigned long)&counter_regs->cpu_timers[i]);
fword("encode-int");
if (i != 0)
fword("encode+");
}
PUSH((unsigned long)&regs->l10_timer_limit);
PUSH((unsigned long)&counter_regs->l10_timer_limit);
fword("encode-int");
fword("encode+");
push_str("address");