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Clarify CLINT and PLIC acronym

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This commit is contained in:
Frans Kaashoek 2020-10-03 10:21:04 -04:00
parent d9c7b13acc
commit 1c4b582fc7
1 changed files with 2 additions and 2 deletions
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4
kernel/memlayout.h
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@ -25,12 +25,12 @@
#define VIRTIO0 0x10001000 #define VIRTIO0 0x10001000
#define VIRTIO0_IRQ 1 #define VIRTIO0_IRQ 1
// local interrupt controller, which contains the timer. // core local interruptor (CLINT), which contains the timer.
#define CLINT 0x2000000L #define CLINT 0x2000000L
#define CLINT_MTIMECMP(hartid) (CLINT + 0x4000 + 8*(hartid)) #define CLINT_MTIMECMP(hartid) (CLINT + 0x4000 + 8*(hartid))
#define CLINT_MTIME (CLINT + 0xBFF8) // cycles since boot. #define CLINT_MTIME (CLINT + 0xBFF8) // cycles since boot.
// qemu puts programmable interrupt controller here. // qemu puts platform-level interrupt controller (PLIC) here.
#define PLIC 0x0c000000L #define PLIC 0x0c000000L
#define PLIC_PRIORITY (PLIC + 0x0) #define PLIC_PRIORITY (PLIC + 0x0)
#define PLIC_PENDING (PLIC + 0x1000) #define PLIC_PENDING (PLIC + 0x1000)