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Refactor fvp gic code to be a generic driver 

Refactor the FVP gic code in plat/fvp/fvp_gic.c to be a generic ARM
GIC driver in drivers/arm/gic/arm_gic.c. Provide the platform
specific inputs in the arm_gic_setup() function so that the driver
has no explicit dependency on platform code.

Provide weak implementations of the platform interrupt controller
API in a new file, plat/common/plat_gic.c. These simply call through
to the ARM GIC driver.

Move the only remaining FVP GIC function, fvp_gic_init() to
plat/fvp/aarch64/fvp_common.c and remove plat/fvp/fvp_gic.c

Fixes ARM-software/tf-issues#182

Change-Id: Iea82fe095fad62dd33ba9efbddd48c57717edd21
This commit is contained in:
Dan Handley 2014-06-20 09:43:15 +01:00
parent 6f3b195a18
commit 1e8c5c4f20
12 changed files with 316 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
bl32/tsp/tsp-fvp.mk
View File

@ -29,9 +29,10 @@
#
# TSP source files specific to FVP platform
BL32_SOURCES += drivers/arm/gic/gic_v2.c \
BL32_SOURCES += drivers/arm/gic/arm_gic.c \
drivers/arm/gic/gic_v2.c \
plat/common/aarch64/platform_mp_stack.S \
plat/common/plat_gic.c \
plat/fvp/aarch64/fvp_common.c \
plat/fvp/aarch64/fvp_helpers.S \
plat/fvp/bl32_fvp_setup.c \
plat/fvp/fvp_gic.c
plat/fvp/bl32_fvp_setup.c

6
docs/user-guide.md
View File

@ -158,9 +158,9 @@ performed.
* `V`: Verbose build. If assigned anything other than 0, the build commands
are printed. Default is 0
* `FVP_GIC_ARCH`: Choice of ARM GIC architecture version used by the FVP port
for implementing the platform GIC API. This API is used by the interrupt
management framework. Default is 2 i.e. version 2.0
* `ARM_GIC_ARCH`: Choice of ARM GIC architecture version used by the ARM GIC
driver for implementing the platform GIC API. This API is used
by the interrupt management framework. Default is 2 i.e. version 2.0.
* `IMF_READ_INTERRUPT_ID`: Boolean flag used by the interrupt management
framework to enable passing of the interrupt id to its handler. The id is

233
plat/fvp/fvp_gic.c → drivers/arm/gic/arm_gic.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@ -28,7 +28,9 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch.h>
#include <arch_helpers.h>
#include <arm_gic.h>
#include <assert.h>
#include <bl_common.h>
#include <debug.h>
@ -36,10 +38,15 @@
#include <gic_v3.h>
#include <interrupt_mgmt.h>
#include <platform.h>
#include <plat_config.h>
#include <stdint.h>
#include "fvp_def.h"
#include "fvp_private.h"
static unsigned int g_gicc_base;
static unsigned int g_gicd_base;
static unsigned long g_gicr_base;
static const unsigned int *g_irq_sec_ptr;
static unsigned int g_num_irqs;
/*******************************************************************************
* This function does some minimal GICv3 configuration. The Firmware itself does
@ -47,7 +54,7 @@
* provided by GICv3. This function allows software (like Linux) in later stages
* to use full GICv3 features.
******************************************************************************/
void gicv3_cpuif_setup(void)
static void gicv3_cpuif_setup(void)
{
unsigned int scr_val, val;
uintptr_t base;
@ -60,7 +67,8 @@ void gicv3_cpuif_setup(void)
* GICR_WAKER is NOT banked per CPU, compute the correct base address
* per CPU.
*/
base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
assert(g_gicr_base);
base = gicv3_get_rdist(g_gicr_base, read_mpidr());
if (base == (uintptr_t)NULL) {
/* No re-distributor base address. This interface cannot be
* configured.
@ -76,9 +84,8 @@ void gicv3_cpuif_setup(void)
/* We need to wait for ChildrenAsleep to clear. */
val = gicr_read_waker(base);
while (val & WAKER_CA) {
while (val & WAKER_CA)
val = gicr_read_waker(base);
}
/*
* We need to set SCR_EL3.NS in order to see GICv3 non-secure state.
@ -104,7 +111,7 @@ void gicv3_cpuif_setup(void)
write_icc_sre_el2(val | ICC_SRE_EN | ICC_SRE_SRE);
write_icc_pmr_el1(GIC_PRI_MASK);
isb(); /* commite ICC_* changes before setting NS=0 */
isb(); /* commit ICC_* changes before setting NS=0 */
/* Restore SCR_EL3 */
write_scr(scr_val);
@ -115,7 +122,7 @@ void gicv3_cpuif_setup(void)
* This function does some minimal GICv3 configuration when cores go
* down.
******************************************************************************/
void gicv3_cpuif_deactivate(void)
static void gicv3_cpuif_deactivate(void)
{
unsigned int val;
uintptr_t base;
@ -127,7 +134,8 @@ void gicv3_cpuif_deactivate(void)
* GICR_WAKER is NOT banked per CPU, compute the correct base address
* per CPU.
*/
base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
assert(g_gicr_base);
base = gicv3_get_rdist(g_gicr_base, read_mpidr());
if (base == (uintptr_t)NULL) {
/* No re-distributor base address. This interface cannot be
* configured.
@ -142,9 +150,8 @@ void gicv3_cpuif_deactivate(void)
/* We need to wait for ChildrenAsleep to set. */
val = gicr_read_waker(base);
while ((val & WAKER_CA) == 0) {
while ((val & WAKER_CA) == 0)
val = gicr_read_waker(base);
}
}
@ -152,91 +159,76 @@ void gicv3_cpuif_deactivate(void)
* Enable secure interrupts and use FIQs to route them. Disable legacy bypass
* and set the priority mask register to allow all interrupts to trickle in.
******************************************************************************/
void gic_cpuif_setup(unsigned int gicc_base)
void arm_gic_cpuif_setup(void)
{
unsigned int val;
val = gicc_read_iidr(gicc_base);
assert(g_gicc_base);
val = gicc_read_iidr(g_gicc_base);
/*
* If GICv3 we need to do a bit of additional setup. We want to
* allow default GICv2 behaviour but allow the next stage to
* enable full gicv3 features.
*/
if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3)
gicv3_cpuif_setup();
}
val = ENABLE_GRP0 | FIQ_EN | FIQ_BYP_DIS_GRP0;
val |= IRQ_BYP_DIS_GRP0 | FIQ_BYP_DIS_GRP1 | IRQ_BYP_DIS_GRP1;
gicc_write_pmr(gicc_base, GIC_PRI_MASK);
gicc_write_ctlr(gicc_base, val);
gicc_write_pmr(g_gicc_base, GIC_PRI_MASK);
gicc_write_ctlr(g_gicc_base, val);
}
/*******************************************************************************
* Place the cpu interface in a state where it can never make a cpu exit wfi as
* as result of an asserted interrupt. This is critical for powering down a cpu
******************************************************************************/
void gic_cpuif_deactivate(unsigned int gicc_base)
void arm_gic_cpuif_deactivate(void)
{
unsigned int val;
/* Disable secure, non-secure interrupts and disable their bypass */
val = gicc_read_ctlr(gicc_base);
assert(g_gicc_base);
val = gicc_read_ctlr(g_gicc_base);
val &= ~(ENABLE_GRP0 | ENABLE_GRP1);
val |= FIQ_BYP_DIS_GRP1 | FIQ_BYP_DIS_GRP0;
val |= IRQ_BYP_DIS_GRP0 | IRQ_BYP_DIS_GRP1;
gicc_write_ctlr(gicc_base, val);
gicc_write_ctlr(g_gicc_base, val);
val = gicc_read_iidr(gicc_base);
val = gicc_read_iidr(g_gicc_base);
/*
* If GICv3 we need to do a bit of additional setup. Make sure the
* RDIST is put to sleep.
*/
if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3)
gicv3_cpuif_deactivate();
}
}
/*******************************************************************************
* Per cpu gic distributor setup which will be done by all cpus after a cold
* boot/hotplug. This marks out the secure interrupts & enables them.
******************************************************************************/
void gic_pcpu_distif_setup(unsigned int gicd_base)
void arm_gic_pcpu_distif_setup(void)
{
gicd_write_igroupr(gicd_base, 0, ~0);
unsigned int index, irq_num;
gicd_clr_igroupr(gicd_base, IRQ_SEC_PHY_TIMER);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_0);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_1);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_2);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_3);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_4);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_5);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_6);
gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_7);
assert(g_gicd_base);
gicd_write_igroupr(g_gicd_base, 0, ~0);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_isenabler(gicd_base, IRQ_SEC_PHY_TIMER);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_0);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_1);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_2);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_3);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_4);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_5);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_6);
gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_7);
assert(g_irq_sec_ptr);
for (index = 0; index < g_num_irqs; index++) {
irq_num = g_irq_sec_ptr[index];
if (irq_num < MIN_SPI_ID) {
/* We have an SGI or a PPI */
gicd_clr_igroupr(g_gicd_base, irq_num);
gicd_set_ipriorityr(g_gicd_base, irq_num,
GIC_HIGHEST_SEC_PRIORITY);
gicd_set_isenabler(g_gicd_base, irq_num);
}
}
}
/*******************************************************************************
@ -244,58 +236,88 @@ void gic_pcpu_distif_setup(unsigned int gicd_base)
* cold boot. It marks out the secure SPIs, PPIs & SGIs and enables them. It
* then enables the secure GIC distributor interface.
******************************************************************************/
void gic_distif_setup(unsigned int gicd_base)
static void arm_gic_distif_setup(void)
{
unsigned int ctr, num_ints, ctlr;
unsigned int num_ints, ctlr, index, irq_num;
/* Disable the distributor before going further */
ctlr = gicd_read_ctlr(gicd_base);
assert(g_gicd_base);
ctlr = gicd_read_ctlr(g_gicd_base);
ctlr &= ~(ENABLE_GRP0 | ENABLE_GRP1);
gicd_write_ctlr(gicd_base, ctlr);
gicd_write_ctlr(g_gicd_base, ctlr);
/*
* Mark out non-secure interrupts. Calculate number of
* IGROUPR registers to consider. Will be equal to the
* number of IT_LINES
*/
num_ints = gicd_read_typer(gicd_base) & IT_LINES_NO_MASK;
num_ints = gicd_read_typer(g_gicd_base) & IT_LINES_NO_MASK;
num_ints++;
for (ctr = 0; ctr < num_ints; ctr++)
gicd_write_igroupr(gicd_base, ctr << IGROUPR_SHIFT, ~0);
for (index = 0; index < num_ints; index++)
gicd_write_igroupr(g_gicd_base, index << IGROUPR_SHIFT, ~0);
/* Configure secure interrupts now */
gicd_clr_igroupr(gicd_base, IRQ_TZ_WDOG);
gicd_set_ipriorityr(gicd_base, IRQ_TZ_WDOG, GIC_HIGHEST_SEC_PRIORITY);
gicd_set_itargetsr(gicd_base, IRQ_TZ_WDOG,
platform_get_core_pos(read_mpidr()));
gicd_set_isenabler(gicd_base, IRQ_TZ_WDOG);
gic_pcpu_distif_setup(gicd_base);
assert(g_irq_sec_ptr);
for (index = 0; index < g_num_irqs; index++) {
irq_num = g_irq_sec_ptr[index];
if (irq_num >= MIN_SPI_ID) {
/* We have an SPI */
gicd_clr_igroupr(g_gicd_base, irq_num);
gicd_set_ipriorityr(g_gicd_base, irq_num,
GIC_HIGHEST_SEC_PRIORITY);
gicd_set_itargetsr(g_gicd_base, irq_num,
platform_get_core_pos(read_mpidr()));
gicd_set_isenabler(g_gicd_base, irq_num);
}
}
arm_gic_pcpu_distif_setup();
gicd_write_ctlr(gicd_base, ctlr | ENABLE_GRP0);
gicd_write_ctlr(g_gicd_base, ctlr | ENABLE_GRP0);
}
void gic_setup(void)
/*******************************************************************************
* Initialize the ARM GIC driver with the provided platform inputs
******************************************************************************/
void arm_gic_init(unsigned int gicc_base,
unsigned int gicd_base,
unsigned long gicr_base,
const unsigned int *irq_sec_ptr,
unsigned int num_irqs
)
{
gic_cpuif_setup(get_plat_config()->gicc_base);
gic_distif_setup(get_plat_config()->gicd_base);
assert(gicc_base);
assert(gicd_base);
assert(gicr_base);
assert(irq_sec_ptr);
g_gicc_base = gicc_base;
g_gicd_base = gicd_base;
g_gicr_base = gicr_base;
g_irq_sec_ptr = irq_sec_ptr;
g_num_irqs = num_irqs;
}
/*******************************************************************************
* Setup the ARM GIC CPU and distributor interfaces.
******************************************************************************/
void arm_gic_setup(void)
{
arm_gic_cpuif_setup();
arm_gic_distif_setup();
}
/*******************************************************************************
* An ARM processor signals interrupt exceptions through the IRQ and FIQ pins.
* The interrupt controller knows which pin/line it uses to signal a type of
* interrupt. The platform knows which interrupt controller type is being used
* in a particular security state e.g. with an ARM GIC, normal world could use
* the GICv2 features while the secure world could use GICv3 features and vice
* versa.
* This function is exported by the platform to let the interrupt management
* framework determine for a type of interrupt and security state, which line
* should be used in the SCR_EL3 to control its routing to EL3. The interrupt
* line is represented as the bit position of the IRQ or FIQ bit in the SCR_EL3.
* interrupt. This function provides a common implementation of
* plat_interrupt_type_to_line() in an ARM GIC environment for optional re-use
* across platforms. It lets the interrupt management framework determine
* for a type of interrupt and security state, which line should be used in the
* SCR_EL3 to control its routing to EL3. The interrupt line is represented as
* the bit position of the IRQ or FIQ bit in the SCR_EL3.
******************************************************************************/
uint32_t plat_interrupt_type_to_line(uint32_t type, uint32_t security_state)
uint32_t arm_gic_interrupt_type_to_line(uint32_t type,
uint32_t security_state)
{
uint32_t gicc_base = get_plat_config()->gicc_base;
assert(type == INTR_TYPE_S_EL1 ||
type == INTR_TYPE_EL3 ||
type == INTR_TYPE_NS);
@ -307,24 +329,25 @@ uint32_t plat_interrupt_type_to_line(uint32_t type, uint32_t security_state)
* both normal and secure worlds are using ARM GICv2. This parameter
* will be used when the secure world starts using GICv3.
*/
#if FVP_GIC_ARCH == 2
return gicv2_interrupt_type_to_line(gicc_base, type);
#if ARM_GIC_ARCH == 2
return gicv2_interrupt_type_to_line(g_gicc_base, type);
#else
#error "Invalid GIC architecture version specified for FVP port"
#endif
#error "Invalid ARM GIC architecture version specified for platform port"
#endif /* ARM_GIC_ARCH */
}
#if FVP_GIC_ARCH == 2
#if ARM_GIC_ARCH == 2
/*******************************************************************************
* This function returns the type of the highest priority pending interrupt at
* the GIC cpu interface. INTR_TYPE_INVAL is returned when there is no
* interrupt pending.
******************************************************************************/
uint32_t plat_ic_get_pending_interrupt_type(void)
uint32_t arm_gic_get_pending_interrupt_type(void)
{
uint32_t id;
id = gicc_read_hppir(get_plat_config()->gicc_base);
assert(g_gicc_base);
id = gicc_read_hppir(g_gicc_base);
/* Assume that all secure interrupts are S-EL1 interrupts */
if (id < 1022)
@ -341,12 +364,12 @@ uint32_t plat_ic_get_pending_interrupt_type(void)
* the GIC cpu interface. INTR_ID_UNAVAILABLE is returned when there is no
* interrupt pending.
******************************************************************************/
uint32_t plat_ic_get_pending_interrupt_id(void)
uint32_t arm_gic_get_pending_interrupt_id(void)
{
uint32_t id, gicc_base;
uint32_t id;
gicc_base = get_plat_config()->gicc_base;
id = gicc_read_hppir(gicc_base);
assert(g_gicc_base);
id = gicc_read_hppir(g_gicc_base);
if (id < 1022)
return id;
@ -358,26 +381,27 @@ uint32_t plat_ic_get_pending_interrupt_id(void)
* Find out which non-secure interrupt it is under the assumption that
* the GICC_CTLR.AckCtl bit is 0.
*/
return gicc_read_ahppir(gicc_base);
return gicc_read_ahppir(g_gicc_base);
}
/*******************************************************************************
* This functions reads the GIC cpu interface Interrupt Acknowledge register
* to start handling the pending interrupt. It returns the contents of the IAR.
******************************************************************************/
uint32_t plat_ic_acknowledge_interrupt(void)
uint32_t arm_gic_acknowledge_interrupt(void)
{
return gicc_read_IAR(get_plat_config()->gicc_base);
assert(g_gicc_base);
return gicc_read_IAR(g_gicc_base);
}
/*******************************************************************************
* This functions writes the GIC cpu interface End Of Interrupt register with
* the passed value to finish handling the active interrupt
******************************************************************************/
void plat_ic_end_of_interrupt(uint32_t id)
void arm_gic_end_of_interrupt(uint32_t id)
{
gicc_write_EOIR(get_plat_config()->gicc_base, id);
return;
assert(g_gicc_base);
gicc_write_EOIR(g_gicc_base, id);
}
/*******************************************************************************
@ -385,11 +409,12 @@ void plat_ic_end_of_interrupt(uint32_t id)
* this interrupt has been configured under by the interrupt controller i.e.
* group0 or group1.
******************************************************************************/
uint32_t plat_ic_get_interrupt_type(uint32_t id)
uint32_t arm_gic_get_interrupt_type(uint32_t id)
{
uint32_t group;
group = gicd_get_igroupr(get_plat_config()->gicd_base, id);
assert(g_gicd_base);
group = gicd_get_igroupr(g_gicd_base, id);
/* Assume that all secure interrupts are S-EL1 interrupts */
if (group == GRP0)
@ -399,5 +424,5 @@ uint32_t plat_ic_get_interrupt_type(uint32_t id)
}
#else
#error "Invalid GIC architecture version specified for FVP port"
#endif
#error "Invalid ARM GIC architecture version specified for platform port"
#endif /* ARM_GIC_ARCH */

57
include/drivers/arm/arm_gic.h Normal file
View File

@ -0,0 +1,57 @@
/*
* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __ARM_GIC_H__
#define __ARM_GIC_H__
#include <stdint.h>
/*******************************************************************************
* Function declarations
******************************************************************************/
void arm_gic_init(unsigned int gicc_base,
unsigned int gicd_base,
unsigned long gicr_base,
const unsigned int *irq_sec_ptr,
unsigned int num_irqs);
void arm_gic_setup(void);
void arm_gic_cpuif_deactivate(void);
void arm_gic_cpuif_setup(void);
void arm_gic_pcpu_distif_setup(void);
uint32_t arm_gic_interrupt_type_to_line(uint32_t type,
uint32_t security_state);
uint32_t arm_gic_get_pending_interrupt_type(void);
uint32_t arm_gic_get_pending_interrupt_id(void);
uint32_t arm_gic_acknowledge_interrupt(void);
void arm_gic_end_of_interrupt(uint32_t id);
uint32_t arm_gic_get_interrupt_type(uint32_t id);
#endif /* __GIC_H__ */

4
include/drivers/arm/gic_v2.h
View File

@ -36,6 +36,10 @@
#define MAX_PPIS 14
#define MAX_SGIS 16
#define MIN_SGI_ID 0
#define MIN_PPI_ID 16
#define MIN_SPI_ID 32
#define GRP0 0
#define GRP1 1
#define GIC_PRI_MASK 0xff

73
plat/common/plat_gic.c Normal file
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@ -0,0 +1,73 @@
/*
* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arm_gic.h>
/*
* The following platform GIC functions are weakly defined. They
* provide typical implementations that may be re-used by multiple
* platforms but may also be overridden by a platform if required.
*/
#pragma weak plat_ic_get_pending_interrupt_id
#pragma weak plat_ic_get_pending_interrupt_type
#pragma weak plat_ic_acknowledge_interrupt
#pragma weak plat_ic_get_interrupt_type
#pragma weak plat_ic_end_of_interrupt
#pragma weak plat_interrupt_type_to_line
uint32_t plat_ic_get_pending_interrupt_id(void)
{
return arm_gic_get_pending_interrupt_id();
}
uint32_t plat_ic_get_pending_interrupt_type(void)
{
return arm_gic_get_pending_interrupt_type();
}
uint32_t plat_ic_acknowledge_interrupt(void)
{
return arm_gic_acknowledge_interrupt();
}
uint32_t plat_ic_get_interrupt_type(uint32_t id)
{
return arm_gic_get_interrupt_type(id);
}
void plat_ic_end_of_interrupt(uint32_t id)
{
arm_gic_end_of_interrupt(id);
}
uint32_t plat_interrupt_type_to_line(uint32_t type,
uint32_t security_state)
{
return arm_gic_interrupt_type_to_line(type, security_state);
}

27
plat/fvp/aarch64/fvp_common.c
View File

@ -30,6 +30,7 @@
#include <arch.h>
#include <arch_helpers.h>
#include <arm_gic.h>
#include <assert.h>
#include <bl_common.h>
#include <cci400.h>
@ -77,6 +78,23 @@ const mmap_region_t fvp_mmap[] = {
{0}
};
/* Array of secure interrupts to be configured by the gic driver */
const unsigned int irq_sec_array[] = {
IRQ_TZ_WDOG,
IRQ_SEC_PHY_TIMER,
IRQ_SEC_SGI_0,
IRQ_SEC_SGI_1,
IRQ_SEC_SGI_2,
IRQ_SEC_SGI_3,
IRQ_SEC_SGI_4,
IRQ_SEC_SGI_5,
IRQ_SEC_SGI_6,
IRQ_SEC_SGI_7
};
const unsigned int num_sec_irqs = sizeof(irq_sec_array) /
sizeof(irq_sec_array[0]);
/*******************************************************************************
* Macro generating the code for the function setting up the pagetables as per
* the platform memory map & initialize the mmu, for the given exception level
@ -235,6 +253,15 @@ void fvp_cci_setup(void)
cci_enable_coherency(read_mpidr());
}
void fvp_gic_init(void)
{
arm_gic_init(plat_config.gicc_base,
plat_config.gicd_base,
BASE_GICR_BASE,
irq_sec_array,
num_sec_irqs);
}
/*******************************************************************************
* Gets SPSR for BL32 entry

4
plat/fvp/bl31_fvp_setup.c
View File

@ -30,6 +30,7 @@
#include <arch.h>
#include <arch_helpers.h>
#include <arm_gic.h>
#include <assert.h>
#include <bl_common.h>
#include <bl31.h>
@ -183,7 +184,8 @@ void bl31_platform_setup(void)
unsigned int reg_val;
/* Initialize the gic cpu and distributor interfaces */
gic_setup();
fvp_gic_init();
arm_gic_setup();
/*
* TODO: Configure the CLCD before handing control to

2
plat/fvp/bl32_fvp_setup.c
View File

@ -83,7 +83,7 @@ void bl32_early_platform_setup(void)
******************************************************************************/
void bl32_platform_setup(void)
{
fvp_gic_init();
}
/*******************************************************************************

19
plat/fvp/fvp_pm.c
View File

@ -29,6 +29,7 @@
*/
#include <arch_helpers.h>
#include <arm_gic.h>
#include <assert.h>
#include <bakery_lock.h>
#include <cci400.h>
@ -130,7 +131,7 @@ int fvp_affinst_off(unsigned long mpidr,
unsigned int state)
{
int rc = PSCI_E_SUCCESS;
unsigned int gicc_base, ectlr;
unsigned int ectlr;
switch (afflvl) {
case MPIDR_AFFLVL1:
@ -168,8 +169,7 @@ int fvp_affinst_off(unsigned long mpidr,
* Prevent interrupts from spuriously waking up
* this cpu
*/
gicc_base = get_plat_config()->gicc_base;
gic_cpuif_deactivate(gicc_base);
arm_gic_cpuif_deactivate();
/*
* Program the power controller to power this
@ -205,7 +205,7 @@ int fvp_affinst_suspend(unsigned long mpidr,
unsigned int state)
{
int rc = PSCI_E_SUCCESS;
unsigned int gicc_base, ectlr;
unsigned int ectlr;
unsigned long linear_id;
mailbox_t *fvp_mboxes;
@ -251,8 +251,7 @@ int fvp_affinst_suspend(unsigned long mpidr,
* Prevent interrupts from spuriously waking up
* this cpu
*/
gicc_base = get_plat_config()->gicc_base;
gic_cpuif_deactivate(gicc_base);
arm_gic_cpuif_deactivate();
/*
* Program the power controller to power this
@ -284,7 +283,7 @@ int fvp_affinst_on_finish(unsigned long mpidr,
int rc = PSCI_E_SUCCESS;
unsigned long linear_id;
mailbox_t *fvp_mboxes;
unsigned int gicd_base, gicc_base, ectlr;
unsigned int ectlr;
switch (afflvl) {
@ -339,12 +338,10 @@ int fvp_affinst_on_finish(unsigned long mpidr,
sizeof(unsigned long));
/* Enable the gic cpu interface */
gicc_base = get_plat_config()->gicc_base;
gic_cpuif_setup(gicc_base);
arm_gic_cpuif_setup();
/* TODO: This setup is needed only after a cold boot */
gicd_base = get_plat_config()->gicd_base;
gic_pcpu_distif_setup(gicd_base);
arm_gic_pcpu_distif_setup();
break;

6
plat/fvp/fvp_private.h
View File

@ -79,11 +79,7 @@ int fvp_config_setup(void);
void fvp_cci_setup(void);
/* Declarations for fvp_gic.c */
void gic_cpuif_deactivate(unsigned int);
void gic_cpuif_setup(unsigned int);
void gic_pcpu_distif_setup(unsigned int);
void gic_setup(void);
void fvp_gic_init(void);
/* Declarations for fvp_topology.c */
int fvp_setup_topology(void);

11
plat/fvp/platform.mk
View File

@ -69,12 +69,13 @@ BL2_SOURCES += drivers/arm/tzc400/tzc400.c \
plat/fvp/aarch64/fvp_common.c
BL31_SOURCES += drivers/arm/cci400/cci400.c \
drivers/arm/gic/arm_gic.c \
drivers/arm/gic/gic_v2.c \
drivers/arm/gic/gic_v3.c \
drivers/arm/tzc400/tzc400.c \
plat/common/plat_gic.c \
plat/common/aarch64/platform_mp_stack.S \
plat/fvp/bl31_fvp_setup.c \
plat/fvp/fvp_gic.c \
plat/fvp/fvp_pm.c \
plat/fvp/fvp_security.c \
plat/fvp/fvp_topology.c \
@ -82,7 +83,7 @@ BL31_SOURCES += drivers/arm/cci400/cci400.c \
plat/fvp/aarch64/fvp_common.c \
plat/fvp/drivers/pwrc/fvp_pwrc.c
# Flag used by the FVP port to determine the version of ARM GIC architecture
# to use for interrupt management in EL3.
FVP_GIC_ARCH := 2
$(eval $(call add_define,FVP_GIC_ARCH))
# Flag used by the platform port to determine the version of ARM GIC
# architecture to use for interrupt management in EL3.
ARM_GIC_ARCH := 2
$(eval $(call add_define,ARM_GIC_ARCH))