diff options
| author | Hans J. Koch <hjk@linutronix.de> | 2010-09-17 18:13:56 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-09-17 21:55:07 +0200 |
| commit | 83ef3338a2ae5d5bd9f5f6803b900b8067660054 (patch) | |
| tree | a759da3a601d092889321cf49b9f003726147be1 /arch/arm/plat-tcc/include/mach/entry-macro.S | |
| parent | 509344b8b4d365b7ff3bce97198d83a57b7c3f31 (diff) | |
ARM: Introduce plat-tcc
This patch introduces support for the tcc platform by creating an
arch/arm/plat-tcc and arch/arm/mach-tcc8k directories and adding
basic include files plus Kconfig and Makefile.
Signed-off-by: "Hans J. Koch" <hjk@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/arm/plat-tcc/include/mach/entry-macro.S')
| -rw-r--r-- | arch/arm/plat-tcc/include/mach/entry-macro.S | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/arm/plat-tcc/include/mach/entry-macro.S b/arch/arm/plat-tcc/include/mach/entry-macro.S new file mode 100644 index 00000000000..748f401e4b6 --- /dev/null +++ b/arch/arm/plat-tcc/include/mach/entry-macro.S @@ -0,0 +1,68 @@ +/* + * include/asm-arm/arch-tcc83x/entry-macro.S + * + * Author : <linux@telechips.com> + * Created: June 10, 2008 + * Description: Low-level IRQ helper macros for Telechips-based platforms + * + * Copyright (C) 2008-2009 Telechips + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <mach/hardware.h> +#include <mach/irqs.h> + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + ldr \base, =0xF2003000 @ base address of PIC registers + + @@ read MREQ register of PIC0 + + mov \irqnr, #0 + ldr \irqstat, [\base, #0x00000014 ] @ lower 32 interrupts + cmp \irqstat, #0 + bne 1001f + + @@ read MREQ register of PIC1 + + ldr \irqstat, [\base, #0x00000094] @ upper 32 interrupts + cmp \irqstat, #0 + beq 1002f + mov \irqnr, #0x20 + +1001: + movs \tmp, \irqstat, lsl #16 + movne \irqstat, \tmp + addeq \irqnr, \irqnr, #16 + + movs \tmp, \irqstat, lsl #8 + movne \irqstat, \tmp + addeq \irqnr, \irqnr, #8 + + movs \tmp, \irqstat, lsl #4 + movne \irqstat, \tmp + addeq \irqnr, \irqnr, #4 + + movs \tmp, \irqstat, lsl #2 + movne \irqstat, \tmp + addeq \irqnr, \irqnr, #2 + + movs \tmp, \irqstat, lsl #1 + addeq \irqnr, \irqnr, #1 + orrs \base, \base, #1 +1002: + @@ exit here, Z flag unset if IRQ + + .endm |