linux/arch/c6x/kernel/vectors.S

; SPDX-License-Identifier: GPL-2.0-only
;
;  Port on Texas Instruments TMS320C6x architecture
;
;  Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated
;  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
;
;  This section handles all the interrupt vector routines.
;  At RESET the processor sets up the DRAM timing parameters and
;  branches to the label _c_int00 which handles initialization for the C code.
;

#define ALIGNMENT 5

	.macro IRQVEC name, handler
	.align ALIGNMENT
	.hidden \name
	.global \name
\name:
#ifdef CONFIG_C6X_BIG_KERNEL
	STW	.D2T1	A0,*B15--[2]
 ||	MVKL	.S1	\handler,A0
	MVKH	.S1	\handler,A0
	B	.S2X	A0
	LDW	.D2T1	*++B15[2],A0
	NOP	4
	NOP
	NOP
	.endm
#else /* CONFIG_C6X_BIG_KERNEL */
	B	.S2	\handler
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	.endm
#endif /* CONFIG_C6X_BIG_KERNEL */

	   .sect ".vectors","ax"
	   .align ALIGNMENT
	   .global RESET
	   .hidden RESET
RESET:
#ifdef CONFIG_C6X_BIG_KERNEL
	   MVKL	.S1	_c_int00,A0		; branch to _c_int00
	   MVKH	.S1	_c_int00,A0
	   B	.S2X	A0
#else
	   B	.S2	_c_int00
	   NOP
	   NOP
#endif
	   NOP
	   NOP
	   NOP
	   NOP
	   NOP


	   IRQVEC NMI,_nmi_handler		; NMI interrupt
	   IRQVEC AINT,_bad_interrupt		; reserved
	   IRQVEC MSGINT,_bad_interrupt		; reserved

	   IRQVEC INT4,_int4_handler
	   IRQVEC INT5,_int5_handler
	   IRQVEC INT6,_int6_handler
	   IRQVEC INT7,_int7_handler
	   IRQVEC INT8,_int8_handler
	   IRQVEC INT9,_int9_handler
	   IRQVEC INT10,_int10_handler
	   IRQVEC INT11,_int11_handler
	   IRQVEC INT12,_int12_handler
	   IRQVEC INT13,_int13_handler
	   IRQVEC INT14,_int14_handler
	   IRQVEC INT15,_int15_handler
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-06-04 08:11:33 +00:00			`; SPDX-License-Identifier: GPL-2.0-only`
C6X: early boot code Original port to early 2.6 kernel using TI COFF toolchain. Brought up to date by Mark Salter <msalter@redhat.com> This patch provides the early boot code for C6X architecture. There is a 16 entry vector table which is used to direct reset and interrupt events. The vector table entries contain a small amount of code (maximum of 8 opcodes) which simply branches to the actual event handling code. The head.S code simply clears BSS, setups up a few control registers, and calls machine_init followed by start_kernel. The machine_init code in setup.c does the early flat tree parsing (memory, commandline, etc). At setup_arch time, the code does the usual memory setup and minimally scans the devicetree for any needed information. Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com> Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 2011-10-04 15:00:02 +00:00			`;`
			`; Port on Texas Instruments TMS320C6x architecture`
			`;`
			`; Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated`
			`; Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)`
			`;`
			`; This section handles all the interrupt vector routines.`
			`; At RESET the processor sets up the DRAM timing parameters and`
			`; branches to the label _c_int00 which handles initialization for the C code.`
			`;`

			`#define ALIGNMENT 5`

			`.macro IRQVEC name, handler`
			`.align ALIGNMENT`
			`.hidden \name`
			`.global \name`
			`\name:`
			`#ifdef CONFIG_C6X_BIG_KERNEL`
			`STW .D2T1 A0,*B15--[2]`
			`\|\| MVKL .S1 \handler,A0`
			`MVKH .S1 \handler,A0`
			`B .S2X A0`
			`LDW .D2T1 *++B15[2],A0`
			`NOP 4`
			`NOP`
			`NOP`
			`.endm`
			`#else /* CONFIG_C6X_BIG_KERNEL */`
			`B .S2 \handler`
			`NOP`
			`NOP`
			`NOP`
			`NOP`
			`NOP`
			`NOP`
			`NOP`
			`.endm`
			`#endif /* CONFIG_C6X_BIG_KERNEL */`

			`.sect ".vectors","ax"`
			`.align ALIGNMENT`
			`.global RESET`
			`.hidden RESET`
			`RESET:`
			`#ifdef CONFIG_C6X_BIG_KERNEL`
			`MVKL .S1 _c_int00,A0 ; branch to _c_int00`
			`MVKH .S1 _c_int00,A0`
			`B .S2X A0`
			`#else`
			`B .S2 _c_int00`
			`NOP`
			`NOP`
			`#endif`
			`NOP`
			`NOP`
			`NOP`
			`NOP`
			`NOP`


			`IRQVEC NMI,_nmi_handler ; NMI interrupt`
			`IRQVEC AINT,_bad_interrupt ; reserved`
			`IRQVEC MSGINT,_bad_interrupt ; reserved`

			`IRQVEC INT4,_int4_handler`
			`IRQVEC INT5,_int5_handler`
			`IRQVEC INT6,_int6_handler`
			`IRQVEC INT7,_int7_handler`
			`IRQVEC INT8,_int8_handler`
			`IRQVEC INT9,_int9_handler`
			`IRQVEC INT10,_int10_handler`
			`IRQVEC INT11,_int11_handler`
			`IRQVEC INT12,_int12_handler`
			`IRQVEC INT13,_int13_handler`
			`IRQVEC INT14,_int14_handler`
			`IRQVEC INT15,_int15_handler`