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| author | Robert Morris <[email protected]> | 2019-06-04 14:20:37 -0400 |
|---|---|---|
| committer | Robert Morris <[email protected]> | 2019-06-04 14:20:37 -0400 |
| commit | a82772594e1807632b3650bff111108f250de3b7 (patch) | |
| tree | 98581a6fa9bfd5ecbabe8052b112c4166c7f9e9e /memlayout.h | |
| parent | cff3ce6e04ce4a353324630df788df21566807a6 (diff) | |
| download | xv6-labs-a82772594e1807632b3650bff111108f250de3b7.tar.gz xv6-labs-a82772594e1807632b3650bff111108f250de3b7.tar.bz2 xv6-labs-a82772594e1807632b3650bff111108f250de3b7.zip | |
timer interrupts -> supervisor software interrupt
Diffstat (limited to 'memlayout.h')
| -rw-r--r-- | memlayout.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/memlayout.h b/memlayout.h index db233f7..db7c076 100644 --- a/memlayout.h +++ b/memlayout.h @@ -1,7 +1,10 @@ // Physical memory layout -// qemu -machine virt is set up like this: +// qemu -machine virt is set up like this, +// based on qemu's hw/riscv/virt.c: +// // 00001000 -- boot ROM, provided by qemu +// 02000000 -- CLINT // 0C000000 -- PLIC // 10000000 -- uart0 registers // 80000000 -- boot ROM jumps here in machine mode @@ -18,10 +21,16 @@ #define UART0 0x10000000L #define UART0_IRQ 10 +// local interrupt controller, which contains the timer. +#define CLINT 0x2000000L +#define CLINT_MSIP0 (CLINT + 0x0) +#define CLINT_MTIMECMP0 (CLINT + 0x4000) +#define CLINT_MTIME (CLINT + 0xBFF8) + // qemu puts programmable interrupt controller here. #define PLIC 0x0c000000L -#define RAMDISK 0x88000000 +#define RAMDISK 0x88000000L // the kernel expects there to be RAM // for use by the kernel and user pages |