add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/hexagon/kernel/kgdb.c
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@@ -1,21 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * arch/hexagon/kernel/kgdb.c - Hexagon KGDB Support
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  *
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  * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 and
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- * only version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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- * 02110-1301, USA.
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  */
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 #include <linux/irq.h>
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@@ -83,7 +70,7 @@
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 	{ "syscall_nr", GDB_SIZEOF_REG, offsetof(struct pt_regs, syscall_nr)},
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 };
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-struct kgdb_arch arch_kgdb_ops = {
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+const struct kgdb_arch arch_kgdb_ops = {
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 	/* trap0(#0xDB) 0x0cdb0054 */
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 	.gdb_bpt_instr = {0x54, 0x00, 0xdb, 0x0c},
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 };
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@@ -114,38 +101,6 @@
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 {
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 	instruction_pointer(regs) = pc;
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 }
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-
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-#ifdef CONFIG_SMP
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-
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-/**
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- * kgdb_roundup_cpus - Get other CPUs into a holding pattern
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- * @flags: Current IRQ state
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- *
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- * On SMP systems, we need to get the attention of the other CPUs
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- * and get them be in a known state.  This should do what is needed
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- * to get the other CPUs to call kgdb_wait(). Note that on some arches,
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- * the NMI approach is not used for rounding up all the CPUs. For example,
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- * in case of MIPS, smp_call_function() is used to roundup CPUs. In
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- * this case, we have to make sure that interrupts are enabled before
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- * calling smp_call_function(). The argument to this function is
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- * the flags that will be used when restoring the interrupts. There is
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- * local_irq_save() call before kgdb_roundup_cpus().
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- *
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- * On non-SMP systems, this is not called.
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- */
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-
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-static void hexagon_kgdb_nmi_hook(void *ignored)
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-{
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-	kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
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-}
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-
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-void kgdb_roundup_cpus(unsigned long flags)
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-{
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-	local_irq_enable();
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-	smp_call_function(hexagon_kgdb_nmi_hook, NULL, 0);
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-	local_irq_disable();
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-}
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-#endif
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 /*  Not yet working  */