mediatek: mt8183: add GIC driver
Add Mediatek GIC driver to support interrupt functions.
Change-Id: I967a18f2e45b7bbc88c506dd4f1f40a745227ad9
diff --git a/plat/mediatek/mt8183/bl31_plat_setup.c b/plat/mediatek/mt8183/bl31_plat_setup.c
index 1e5367f..5a0cb87 100644
--- a/plat/mediatek/mt8183/bl31_plat_setup.c
+++ b/plat/mediatek/mt8183/bl31_plat_setup.c
@@ -12,6 +12,7 @@
#include <common/debug.h>
#include <drivers/generic_delay_timer.h>
#include <mcucfg.h>
+#include <mt_gic_v3.h>
#include <lib/mmio.h>
#include <mtk_plat_common.h>
#include <plat_debug.h>
@@ -69,8 +70,8 @@
u_register_t arg2, u_register_t arg3)
{
struct mtk_bl31_params *arg_from_bl2 = (struct mtk_bl31_params *)arg0;
-
static console_16550_t console;
+
console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
NOTICE("MT8183 bl31_setup\n");
@@ -91,6 +92,10 @@
{
platform_setup_cpu();
generic_delay_timer_init();
+
+ /* Initialize the GIC driver, CPU and distributor interfaces */
+ mt_gic_driver_init();
+ mt_gic_init();
}
/*******************************************************************************
diff --git a/plat/mediatek/mt8183/include/mt_gic_v3.h b/plat/mediatek/mt8183/include/mt_gic_v3.h
new file mode 100644
index 0000000..e2706f4
--- /dev/null
+++ b/plat/mediatek/mt8183/include/mt_gic_v3.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MT_GIC_V3_H
+#define MT_GIC_V3_H
+
+#include <lib/mmio.h>
+
+enum irq_schedule_mode {
+ SW_MODE,
+ HW_MODE
+};
+
+#define GIC_INT_MASK (MCUCFG_BASE + 0x5e8)
+#define GIC500_ACTIVE_SEL_SHIFT 3
+#define GIC500_ACTIVE_SEL_MASK (0x7 << GIC500_ACTIVE_SEL_SHIFT)
+#define GIC500_ACTIVE_CPU_SHIFT 16
+#define GIC500_ACTIVE_CPU_MASK (0xff << GIC500_ACTIVE_CPU_SHIFT)
+
+void mt_gic_driver_init(void);
+void mt_gic_init(void);
+void mt_gic_set_pending(uint32_t irq);
+uint32_t mt_gic_get_pending(uint32_t irq);
+void mt_gic_cpuif_enable(void);
+void mt_gic_cpuif_disable(void);
+void mt_gic_pcpu_init(void);
+void mt_gic_irq_save(void);
+void mt_gic_irq_restore(void);
+void mt_gic_sync_dcm_enable(void);
+void mt_gic_sync_dcm_disable(void);
+
+#endif /* MT_GIC_V3_H */
diff --git a/plat/mediatek/mt8183/include/plat_private.h b/plat/mediatek/mt8183/include/plat_private.h
index e57ae45..599f14f 100644
--- a/plat/mediatek/mt8183/include/plat_private.h
+++ b/plat/mediatek/mt8183/include/plat_private.h
@@ -21,7 +21,6 @@
void plat_cci_enable(void);
void plat_cci_disable(void);
void plat_cci_init_sf(void);
-void plat_gic_init(void);
/* Declarations for plat_topology.c */
int mt_setup_topology(void);
diff --git a/plat/mediatek/mt8183/plat_mt_gic.c b/plat/mediatek/mt8183/plat_mt_gic.c
new file mode 100644
index 0000000..2144379
--- /dev/null
+++ b/plat/mediatek/mt8183/plat_mt_gic.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <drivers/arm/gicv3.h>
+#include <bl31/interrupt_mgmt.h>
+#include <../drivers/arm/gic/v3/gicv3_private.h>
+#include <mt_gic_v3.h>
+#include <mtk_plat_common.h>
+#include "plat_private.h"
+#include <plat/common/platform.h>
+#include <platform_def.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#define NR_INT_POL_CTL 20
+
+uintptr_t rdistif_base_addrs[PLATFORM_CORE_COUNT];
+
+/*
+ * We save and restore the GICv3 context on system suspend. Allocate the
+ * data in the designated EL3 Secure carve-out memory
+ */
+gicv3_redist_ctx_t rdist_ctx __section("arm_el3_tzc_dram");
+gicv3_dist_ctx_t dist_ctx __section("arm_el3_tzc_dram");
+
+
+static unsigned int mt_mpidr_to_core_pos(u_register_t mpidr)
+{
+ return plat_core_pos_by_mpidr(mpidr);
+}
+
+gicv3_driver_data_t mt_gicv3_data = {
+ .gicd_base = MT_GIC_BASE,
+ .gicr_base = MT_GIC_RDIST_BASE,
+ .rdistif_num = PLATFORM_CORE_COUNT,
+ .rdistif_base_addrs = rdistif_base_addrs,
+ .mpidr_to_core_pos = mt_mpidr_to_core_pos,
+};
+
+void setup_int_schedule_mode(enum irq_schedule_mode mode,
+ unsigned int active_cpu)
+{
+ assert(mode <= HW_MODE);
+ assert(active_cpu <= 0xFF);
+
+ if (mode == HW_MODE) {
+ mmio_write_32(GIC_INT_MASK,
+ (mmio_read_32(GIC_INT_MASK) & ~(GIC500_ACTIVE_SEL_MASK))
+ | (0x1 << GIC500_ACTIVE_SEL_SHIFT));
+ } else if (mode == SW_MODE) {
+ mmio_write_32(GIC_INT_MASK,
+ (mmio_read_32(GIC_INT_MASK) & ~(GIC500_ACTIVE_SEL_MASK)));
+ }
+
+ mmio_write_32(GIC_INT_MASK,
+ (mmio_read_32(GIC_INT_MASK) & ~(GIC500_ACTIVE_CPU_MASK))
+ | (active_cpu << GIC500_ACTIVE_CPU_SHIFT));
+ return;
+}
+
+void clear_sec_pol_ctl_en(void)
+{
+ unsigned int i;
+
+ /* total 19 polarity ctrl registers */
+ for (i = 0; i <= NR_INT_POL_CTL - 1; i++) {
+ mmio_write_32((SEC_POL_CTL_EN0 + (i * 4)), 0);
+ }
+ dsb();
+}
+
+void mt_gic_driver_init(void)
+{
+ gicv3_driver_init(&mt_gicv3_data);
+}
+
+void mt_gic_init(void)
+{
+ gicv3_distif_init();
+ gicv3_rdistif_init(plat_my_core_pos());
+ gicv3_cpuif_enable(plat_my_core_pos());
+
+ setup_int_schedule_mode(SW_MODE, 0xf);
+ clear_sec_pol_ctl_en();
+}
+
+void mt_gic_set_pending(uint32_t irq)
+{
+ gicv3_set_interrupt_pending(irq, plat_my_core_pos());
+}
+
+uint32_t mt_gic_get_pending(uint32_t irq)
+{
+ uint32_t bit = 1 << (irq % 32);
+
+ return (mmio_read_32(gicv3_driver_data->gicd_base +
+ GICD_ISPENDR + irq / 32 * 4) & bit) ? 1 : 0;
+}
+
+void mt_gic_cpuif_enable(void)
+{
+ gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+void mt_gic_cpuif_disable(void)
+{
+ gicv3_cpuif_disable(plat_my_core_pos());
+}
+
+void mt_gic_pcpu_init(void)
+{
+ gicv3_rdistif_init(plat_my_core_pos());
+}
+
+void mt_gic_irq_save(void)
+{
+ gicv3_rdistif_save(plat_my_core_pos(), &rdist_ctx);
+ gicv3_distif_save(&dist_ctx);
+}
+
+void mt_gic_irq_restore(void)
+{
+ gicv3_distif_init_restore(&dist_ctx);
+ gicv3_rdistif_init_restore(plat_my_core_pos(), &rdist_ctx);
+}
+
+void mt_gic_sync_dcm_enable(void)
+{
+ unsigned int val = mmio_read_32(GIC_SYNC_DCM);
+
+ val &= ~GIC_SYNC_DCM_MASK;
+ mmio_write_32(GIC_SYNC_DCM, val | GIC_SYNC_DCM_ON);
+}
+
+void mt_gic_sync_dcm_disable(void)
+{
+ unsigned int val = mmio_read_32(GIC_SYNC_DCM);
+
+ val &= ~GIC_SYNC_DCM_MASK;
+ mmio_write_32(GIC_SYNC_DCM, val | GIC_SYNC_DCM_OFF);
+}
diff --git a/plat/mediatek/mt8183/platform.mk b/plat/mediatek/mt8183/platform.mk
index 2ceb459..607e7e3 100644
--- a/plat/mediatek/mt8183/platform.mk
+++ b/plat/mediatek/mt8183/platform.mk
@@ -12,14 +12,15 @@
PLAT_BL_COMMON_SOURCES := lib/xlat_tables/aarch64/xlat_tables.c \
lib/xlat_tables/xlat_tables_common.c \
- plat/common/plat_gicv2.c \
plat/common/plat_psci_common.c \
plat/common/aarch64/crash_console_helpers.S
BL31_SOURCES += drivers/arm/cci/cci.c \
drivers/arm/gic/common/gic_common.c \
- drivers/arm/gic/v2/gicv2_main.c \
- drivers/arm/gic/v2/gicv2_helpers.c \
+ drivers/arm/gic/v3/arm_gicv3_common.c \
+ drivers/arm/gic/v3/gicv3_helpers.c \
+ drivers/arm/gic/v3/gic500.c \
+ drivers/arm/gic/v3/gicv3_main.c \
drivers/delay_timer/delay_timer.c \
drivers/delay_timer/generic_delay_timer.c \
drivers/gpio/gpio.c \
@@ -27,11 +28,13 @@
lib/cpus/aarch64/aem_generic.S \
lib/cpus/aarch64/cortex_a53.S \
lib/cpus/aarch64/cortex_a73.S \
+ plat/common/plat_gicv3.c \
${MTK_PLAT}/common/mtk_plat_common.c \
${MTK_PLAT_SOC}/aarch64/plat_helpers.S \
${MTK_PLAT_SOC}/aarch64/platform_common.c \
${MTK_PLAT_SOC}/plat_pm.c \
${MTK_PLAT_SOC}/plat_topology.c \
+ ${MTK_PLAT_SOC}/plat_mt_gic.c \
${MTK_PLAT_SOC}/bl31_plat_setup.c \
${MTK_PLAT_SOC}/plat_debug.c \
${MTK_PLAT_SOC}/scu.c