diff options
| author | Amit Kucheria <amit.kucheria@canonical.com> | 2009-12-03 22:36:41 +0200 |
|---|---|---|
| committer | Amit Kucheria <amit.kucheria@canonical.com> | 2010-02-09 16:15:26 +0200 |
| commit | a003708ad4ee9384226251431c7953a24079ff80 (patch) | |
| tree | 03062bf18e6d688338c46015682f80aba7d458db /arch/arm/plat-mxc/include | |
| parent | cb2dc111b156eb41f61ed4e5b3a3a5df90526d9d (diff) | |
mxc: TrustZone interrupt controller (TZIC) for Freescale i.MX5 family
Freescale i.MX51 processor uses a new interrupt controller. Add
driver for TrustZone Interrupt Controller
Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
Diffstat (limited to 'arch/arm/plat-mxc/include')
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/entry-macro.S | 34 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/irqs.h | 6 |
3 files changed, 39 insertions, 2 deletions
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h index 4bf1068ffad..1394025068c 100644 --- a/arch/arm/plat-mxc/include/mach/common.h +++ b/arch/arm/plat-mxc/include/mach/common.h @@ -22,6 +22,7 @@ extern void mx31_map_io(void); extern void mx35_map_io(void); extern void mxc91231_map_io(void); extern void mxc_init_irq(void __iomem *); +extern void tzic_init_irq(void __iomem *); extern void mx1_init_irq(void); extern void mx21_init_irq(void); extern void mx25_init_irq(void); diff --git a/arch/arm/plat-mxc/include/mach/entry-macro.S b/arch/arm/plat-mxc/include/mach/entry-macro.S index 7cf290efe76..aeb08697726 100644 --- a/arch/arm/plat-mxc/include/mach/entry-macro.S +++ b/arch/arm/plat-mxc/include/mach/entry-macro.S @@ -1,6 +1,6 @@ /* * Copyright (C) 2007 Lennert Buytenhek <buytenh@wantstofly.org> - * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -18,11 +18,16 @@ .endm .macro get_irqnr_preamble, base, tmp +#ifndef CONFIG_MXC_TZIC ldr \base, =avic_base ldr \base, [\base] #ifdef CONFIG_MXC_IRQ_PRIOR ldr r4, [\base, #AVIC_NIMASK] #endif +#elif defined CONFIG_MXC_TZIC + ldr \base, =tzic_base + ldr \base, [\base] +#endif /* CONFIG_MXC_TZIC */ .endm .macro arch_ret_to_user, tmp1, tmp2 @@ -32,6 +37,7 @@ @ and returns its number in irqnr @ and returns if an interrupt occured in irqstat .macro get_irqnr_and_base, irqnr, irqstat, base, tmp +#ifndef CONFIG_MXC_TZIC @ Load offset & priority of the highest priority @ interrupt pending from AVIC_NIVECSR ldr \irqstat, [\base, #0x40] @@ -45,6 +51,32 @@ strne \tmp, [\base, #AVIC_NIMASK] streq r4, [\base, #AVIC_NIMASK] #endif +#elif defined CONFIG_MXC_TZIC + @ Load offset & priority of the highest priority + @ interrupt pending. + @ 0xD80 is HIPND0 register + mov \irqnr, #0 + mov \irqstat, #0x0D80 +1000: + ldr \tmp, [\irqstat, \base] + cmp \tmp, #0 + bne 1001f + addeq \irqnr, \irqnr, #32 + addeq \irqstat, \irqstat, #4 + cmp \irqnr, #128 + blo 1000b + b 2001f +1001: mov \irqstat, #1 +1002: tst \tmp, \irqstat + bne 2002f + movs \tmp, \tmp, lsr #1 + addne \irqnr, \irqnr, #1 + bne 1002b +2001: + mov \irqnr, #0 +2002: + movs \irqnr, \irqnr +#endif .endm @ irq priority table (not used) diff --git a/arch/arm/plat-mxc/include/mach/irqs.h b/arch/arm/plat-mxc/include/mach/irqs.h index 0cb347645db..38f150162e4 100644 --- a/arch/arm/plat-mxc/include/mach/irqs.h +++ b/arch/arm/plat-mxc/include/mach/irqs.h @@ -12,9 +12,13 @@ #define __ASM_ARCH_MXC_IRQS_H__ /* - * So far all i.MX SoCs have 64 internal interrupts + * SoCs with TZIC interrupt controller have 128 IRQs, those with AVIC have 64 */ +#ifdef CONFIG_MXC_TZIC +#define MXC_INTERNAL_IRQS 128 +#else #define MXC_INTERNAL_IRQS 64 +#endif #define MXC_GPIO_IRQ_START MXC_INTERNAL_IRQS |