Date: Fri, 22 Jan 2010 20:32:07 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r202830 - in head/sys/mips: include mips Message-ID: <201001222032.o0MKW79x077742@svn.freebsd.org>
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Author: imp Date: Fri Jan 22 20:32:07 2010 New Revision: 202830 URL: http://svn.freebsd.org/changeset/base/202830 Log: Create a method of last resort for rebooting the mips processor: jump to the reset vector. This works for many SoCs where other reset hardware is either missing or unknown. Modified: head/sys/mips/include/md_var.h head/sys/mips/mips/machdep.c Modified: head/sys/mips/include/md_var.h ============================================================================== --- head/sys/mips/include/md_var.h Fri Jan 22 20:30:54 2010 (r202829) +++ head/sys/mips/include/md_var.h Fri Jan 22 20:32:07 2010 (r202830) @@ -52,6 +52,7 @@ uintptr_t MipsEmulateBranch(struct trapf void MipsSwitchFPState(struct thread *, struct trapframe *); u_long kvtop(void *addr); int is_physical_memory(vm_offset_t addr); +void mips_generic_reset(void); #define is_cacheable_mem(pa) is_physical_memory((pa)) Modified: head/sys/mips/mips/machdep.c ============================================================================== --- head/sys/mips/mips/machdep.c Fri Jan 22 20:30:54 2010 (r202829) +++ head/sys/mips/mips/machdep.c Fri Jan 22 20:32:07 2010 (r202830) @@ -84,6 +84,7 @@ __FBSDID("$FreeBSD$"); #include <machine/cache.h> #include <machine/clock.h> #include <machine/cpu.h> +#include <machine/cpuregs.h> #include <machine/hwfunc.h> #include <machine/intr_machdep.h> #include <machine/md_var.h> @@ -359,6 +360,17 @@ mips_vector_init(void) } /* + * Many SoCs have a means to reset the core itself. Others do not, or + * the method is unknown to us. For those cases, we jump to the mips + * reset vector and hope for the best. This works well in practice. + */ +void +mips_generic_reset() +{ + ((void(*)(void))(intptr_t)MIPS_VEC_RESET)(); +} + +/* * Initialise a struct pcpu. */ void
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