ref: dbf6aaf513a4dbcc53d938917d47b057adfab81f
dir: /sys/src/9/bcm/archbcm.c/
/* * bcm2835 (e.g. raspberry pi) architecture-specific stuff */ #include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "../port/error.h" #include "io.h" #include "arm.h" #define POWERREGS (VIRTIO+0x100000) enum { Wdogfreq = 65536, }; /* * Power management / watchdog registers */ enum { Rstc = 0x1c>>2, Password = 0x5A<<24, CfgMask = 0x03<<4, CfgReset = 0x02<<4, Wdog = 0x24>>2, }; void archreset(void) { fpon(); } void archreboot(void) { u32int *r; r = (u32int*)POWERREGS; r[Wdog] = Password | 1; r[Rstc] = Password | (r[Rstc] & ~CfgMask) | CfgReset; coherence(); for(;;) ; } void cpuidprint(void) { print("cpu%d: %dMHz ARM1176JZF-S\n", m->machno, m->cpumhz); } void archbcmlink(void) { }