/* Boot.S: boot loader for Siemens DVB-S card Copyright (C) 2001 Convergence integrated media GmbH Written by Ralph Metzler Copyright (C) 2006 Matthieu CASTET This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ /* check AV711x_3_1.pdf for some hardware infos build it with : $ cc -mbig-endian -c Boot.S $ ld -Ttext 0x2c000000 -EB -o Boot Boot.o $ objcopy -Obinary Boot */ .text .align .globl _start _start: b reset // reset vector movs pc, r14 // undefined subs pc, r14, #4 // SWI subs pc, r14, #4 // prefetch abort subs pc, r14, #8 // data abort subs pc, r14, #4 // reserved subs pc, r14, #4 // IRQ subs pc, r14, #4 // FIQ .word tbl // table needed by firmware ROM tbl: .word (endtbl - tbl) .word 0 .word conf endtbl: .word 0 conf: .word 0xa5a55a5a .word 0x001f1555 .word 0x00000009 reset: ldr r13, buffer ldr r4, flag mov r0, #0 str r0, [r4] str r0, [r4, #4] ldr r1, wait_address ldr r2, flag_address ldr r3, sram copycode: // copy the code HW Sram ldmia r1!, {r5-r12} stmia r3!, {r5-r12} cmp r1, r2 ble copycode ldr pc, sram // jump to the copied code wait: ldrh r1, [r4] // wait for flag!=0 cmp r1, #0 beq wait mov r1, r13 // buffer address ldr r3, [r4,#4] // destaddr ldrh r2, [r4,#2] // get segment length add r2, r2, #63 // round length to next 64 bytes movs r2, r2, lsr #6 // and divide by 64 moveq r0, #2 // if 0, set flag to 2, else signal strh r0, [r4] // that buffer is accepted by setting to 0 beq wait copyloop: ldmia r1!, {r5-r12} stmia r3!, {r5-r12} ldmia r1!, {r5-r12} stmia r3!, {r5-r12} subs r2, r2, #1 bne copyloop eor r13, r13, #0x1400 // switch to other buffer b wait // flag is stored at 0x2c0003f8, length at 0x2c0003fa, // destaddr at 0x2c0003fc flag: .word 0x2c0003f8 // buffer 1 is at 0x2c000400, buffer 2 at 0x2c001000 buffer: .word 0x2c000400 sram: .word 0x9e000800 wait_address: .word wait flag_address: .word flag include/net/irda/irda_device.h
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 19:03:21 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 20:22:18 +0100
commitaaaec6fc755447a1d056765b11b24d8ff2b81366 (patch)
treea7f4167960ee1df86739905b6ccdeb95465bfe5f /include/net/irda/irda_device.h
parent08d85f3ea99f1eeafc4e8507936190e86a16ee8c (diff)
x86/irq: Make irq activate operations symmetric
The recent commit which prevents double activation of interrupts unearthed interesting code in x86. The code (ab)uses irq_domain_activate_irq() to reconfigure an already activated interrupt. That trips over the prevention code now. Fix it by deactivating the interrupt before activating the new configuration. Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once" Reported-and-tested-by: Mike Galbraith <efault@gmx.de> Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Diffstat (limited to 'include/net/irda/irda_device.h')