From 52c543f90c4095dff71dc125017594b61a753069 Mon Sep 17 00:00:00 2001 From: Quinn Jensen Date: Mon, 9 Jul 2007 22:06:53 +0100 Subject: [ARM] 4461/1: MXC platform and i.MX31ADS core support This patch adds the foundation pieces for the Freescale MXC platforms, including i.MX2 and i.MX3 based systems. The bare-bones MX31 support in this patch boots to the rootdev panic with 8250 serial console configured "console=ttyS0,115200". It assumes that Redboot is the boot loader. Signed-off-by: Quinn Jensen Acked-by: Lennert Buytenhek Signed-off-by: Russell King --- include/asm-arm/arch-mxc/entry-macro.S | 39 ++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 include/asm-arm/arch-mxc/entry-macro.S (limited to 'include/asm-arm/arch-mxc/entry-macro.S') diff --git a/include/asm-arm/arch-mxc/entry-macro.S b/include/asm-arm/arch-mxc/entry-macro.S new file mode 100644 index 00000000000..b542433afb1 --- /dev/null +++ b/include/asm-arm/arch-mxc/entry-macro.S @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2007 Lennert Buytenhek + * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * 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 macro disables fast irq (not implemented) + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + @ this macro checks which interrupt occured + @ and returns its number in irqnr + @ and returns if an interrupt occured in irqstat + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \base, =AVIC_IO_ADDRESS(AVIC_BASE_ADDR) + @ Load offset & priority of the highest priority + @ interrupt pending from AVIC_NIVECSR + ldr \irqstat, [\base, #0x40] + @ Shift to get the decoded IRQ number, using ASR so + @ 'no interrupt pending' becomes 0xffffffff + mov \irqnr, \irqstat, asr #16 + @ set zero flag if IRQ + 1 == 0 + adds \tmp, \irqnr, #1 + .endm + + @ irq priority table (not used) + .macro irq_prio_table + .endm -- cgit v1.2.3