riscv: Use SBI shutdown call to implement RB_POWEROFF
Currently we only call sbi_shutdown in cpu_reset, which means we reach "Please press any key to reboot." even when RB_POWEROFF is set, and only once the user presses a key do we then shutdown. Instead, register a shutdown_final event handler and make an SBI shutdown call if RB_POWEROFF is set. Reviewed by: br, jhb (mentor), kp Approved by: br, jhb (mentor), kp Differential Revision: https://reviews.freebsd.org/D25183
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=361932
@ -29,8 +29,11 @@
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/eventhandler.h>
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#include <sys/reboot.h>
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#include <machine/md_var.h>
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#include <machine/sbi.h>
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@ -80,6 +83,13 @@ sbi_get_mimpid(void)
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return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_MIMPID));
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}
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static void
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sbi_shutdown_final(void *dummy __unused, int howto)
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{
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if ((howto & RB_POWEROFF) != 0)
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sbi_shutdown();
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}
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void
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sbi_print_version(void)
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{
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@ -187,3 +197,12 @@ sbi_init(void)
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KASSERT(sbi_probe_extension(SBI_SHUTDOWN) != 0,
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("SBI doesn't implement sbi_shutdown()"));
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}
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static void
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sbi_late_init(void *dummy __unused)
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{
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EVENTHANDLER_REGISTER(shutdown_final, sbi_shutdown_final, NULL,
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SHUTDOWN_PRI_LAST);
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}
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SYSINIT(sbi, SI_SUB_KLD, SI_ORDER_ANY, sbi_late_init, NULL);
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