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ARM: OMAP4: Add minimal support for omap4

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This patch adds the support for OMAP4. The platform and machine specific
headers and sources updated for OMAP4430 SDP platform.

OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Santosh Shilimkar
2009-05-28 14:16:04 -07:00
committed by Tony Lindgren
parent 7419045016
commit 44169075e6
26 changed files with 600 additions and 62 deletions
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46
arch/arm/plat-omap/include/mach/entry-macro.S
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@@ -3,6 +3,9 @@
*
* Low-level IRQ helper macros for OMAP-based platforms
*
* Copyright (C) 2009 Texas Instruments
* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* 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.
@@ -10,6 +13,7 @@
#include <mach/hardware.h>
#include <mach/io.h>
#include <mach/irqs.h>
#include <asm/hardware/gic.h>
#if defined(CONFIG_ARCH_OMAP1)
@@ -56,7 +60,8 @@
.endm
#endif
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
defined(CONFIG_ARCH_OMAP4)
#include <mach/omap24xx.h>
#include <mach/omap34xx.h>
@@ -67,7 +72,9 @@
#elif defined(CONFIG_ARCH_OMAP34XX)
#define OMAP2_VA_IC_BASE IO_ADDRESS(OMAP34XX_IC_BASE)
#endif
#if defined(CONFIG_ARCH_OMAP4)
#include <mach/omap44xx.h>
#endif
#define INTCPS_SIR_IRQ_OFFSET 0x0040 /* Active interrupt offset */
#define ACTIVEIRQ_MASK 0x7f /* Active interrupt bits */
@@ -80,6 +87,7 @@
.macro arch_ret_to_user, tmp1, tmp2
.endm
#ifndef CONFIG_ARCH_OMAP4
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \base, =OMAP2_VA_IC_BASE
ldr \irqnr, [\base, #0x98] /* IRQ pending reg 1 */
@@ -95,6 +103,40 @@
and \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
.endm
#else
/*
* The interrupt numbering scheme is defined in the
* interrupt controller spec. To wit:
*
* Interrupts 0-15 are IPI
* 16-28 are reserved
* 29-31 are local. We allow 30 to be used for the watchdog.
* 32-1020 are global
* 1021-1022 are reserved
* 1023 is "spurious" (no interrupt)
*
* For now, we ignore all local interrupts so only return an
* interrupt if it's between 30 and 1020. The test_for_ipi
* routine below will pick up on IPIs.
* A simple read from the controller will tell us the number
* of the highest priority enabled interrupt.
* We then just need to check whether it is in the
* valid range for an IRQ (30-1020 inclusive).
*/
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \base, =OMAP44XX_VA_GIC_CPU_BASE
ldr \irqstat, [\base, #GIC_CPU_INTACK]
ldr \tmp, =1021
bic \irqnr, \irqstat, #0x1c00
cmp \irqnr, #29
cmpcc \irqnr, \irqnr
cmpne \irqnr, \tmp
cmpcs \irqnr, \irqnr
.endm
#endif
.macro irq_prio_table
.endm