mirror of
https://github.com/fail0verflow/mini.git
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82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
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#include "irq.h"
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#include "hollywood.h"
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#include "gecko.h"
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#include "utils.h"
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void irq_setup_stack(void);
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void irq_initialize(void)
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{
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irq_setup_stack();
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write32(HW_IRQENABLE, 0);
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write32(HW_IRQFLAG, 0xffffffff);
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irq_restore(CPSR_FIQDIS);
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//???
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write32(HW_IRQENABLE+0x04, 0);
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write32(HW_IRQENABLE+0x20, 0);
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}
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void irq_shutdown(void)
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{
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write32(HW_IRQENABLE, 0);
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write32(HW_IRQFLAG, 0xffffffff);
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irq_kill();
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}
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void irq_handler(void)
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{
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u32 enabled = read32(HW_IRQENABLE);
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u32 flags = read32(HW_IRQFLAG);
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gecko_printf("In IRQ handler: 0x%08x 0x%08x 0x%08x\n", enabled, flags, flags & enabled);
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flags = flags & enabled;
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if(flags & IRQF_TIMER) {
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gecko_printf("IRQ: timer\n");
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gecko_printf("Timer: %08x\n", read32(HW_TIMER));
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gecko_printf("Alarm: %08x\n", read32(HW_ALARM));
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write32(HW_ALARM, 0); // shut it up
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write32(HW_IRQFLAG, IRQF_TIMER);
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}
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if(flags & IRQF_NAND) {
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gecko_printf("IRQ: NAND\n");
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write32(NAND_CMD, 0x7fffffff); // shut it up
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write32(HW_IRQFLAG, IRQF_NAND);
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}
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if(flags & IRQF_GPIO1B) {
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gecko_printf("IRQ: GPIO1B\n");
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write32(HW_GPIO1BINTFLAG, 0xFFFFFF); // shut it up
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write32(HW_IRQFLAG, IRQF_GPIO1B);
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}
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if(flags & IRQF_GPIO1) {
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gecko_printf("IRQ: GPIO1\n");
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write32(HW_GPIO1INTFLAG, 0xFFFFFF); // shut it up
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write32(HW_IRQFLAG, IRQF_GPIO1);
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}
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if(flags & IRQF_RESET) {
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gecko_printf("IRQ: RESET\n");
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write32(HW_IRQFLAG, IRQF_RESET);
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}
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if(flags & IRQF_IPC) {
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gecko_printf("IRQ: IPC\n");
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write32(HW_IRQFLAG, IRQF_IPC);
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}
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flags &= ~IRQF_ALL;
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if(flags) {
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gecko_printf("IRQ: unknown 0x%08x\n");
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write32(HW_IRQFLAG, flags);
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}
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}
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void irq_enable(u32 irq)
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{
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set32(HW_IRQENABLE, 1<<irq);
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}
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void irq_disable(u32 irq)
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{
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clear32(HW_IRQENABLE, 1<<irq);
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}
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