From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/sparc/prom/mp.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/sparc/prom/mp.c (limited to 'arch/sparc/prom/mp.c') diff --git a/arch/sparc/prom/mp.c b/arch/sparc/prom/mp.c new file mode 100644 index 000000000..67cf0e957 --- /dev/null +++ b/arch/sparc/prom/mp.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * mp.c: OpenBoot Prom Multiprocessor support routines. Don't call + * these on a UP or else you will halt and catch fire. ;) + * + * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) + */ + +#include +#include +#include + +#include +#include + +extern void restore_current(void); + +/* Start cpu with prom-tree node 'cpunode' using context described + * by 'ctable_reg' in context 'ctx' at program counter 'pc'. + * + * XXX Have to look into what the return values mean. XXX + */ +int +prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc) +{ + int ret; + unsigned long flags; + + spin_lock_irqsave(&prom_lock, flags); + switch(prom_vers) { + case PROM_V0: + case PROM_V2: + default: + ret = -1; + break; + case PROM_V3: + ret = (*(romvec->v3_cpustart))(cpunode, (int) ctable_reg, ctx, pc); + break; + } + restore_current(); + spin_unlock_irqrestore(&prom_lock, flags); + + return ret; +} -- cgit v1.2.3