Support for NXP's imx SoC common function
This patch adds support for NXP's imx SoC common
function support like topology, gic implementation.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
diff --git a/plat/imx/common/imx8_helpers.S b/plat/imx/common/imx8_helpers.S
new file mode 100644
index 0000000..b89d346
--- /dev/null
+++ b/plat/imx/common/imx8_helpers.S
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <asm_macros.S>
+#include <platform_def.h>
+#include <cortex_a35.h>
+
+ .globl plat_is_my_cpu_primary
+ .globl plat_my_core_pos
+ .globl plat_calc_core_pos
+ .globl plat_reset_handler
+ .globl plat_get_my_entrypoint
+ .globl plat_secondary_cold_boot_setup
+ .globl plat_crash_console_init
+ .globl plat_crash_console_putc
+ .globl platform_mem_init
+ .globl imx_mailbox_init
+
+ /* --------------------------------------------------------------------
+ * Helper macro that reads the part number of the current CPU and jumps
+ * to the given label if it matches the CPU MIDR provided.
+ *
+ * Clobbers x0.
+ * --------------------------------------------------------------------
+ */
+ .macro jump_if_cpu_midr _cpu_midr, _label
+
+ mrs x0, midr_el1
+ ubfx x0, x0, MIDR_PN_SHIFT, #12
+ cmp w0, #((\_cpu_midr >> MIDR_PN_SHIFT) & MIDR_PN_MASK)
+ b.eq \_label
+
+ .endm
+
+ /* ----------------------------------------------
+ * The mailbox_base is used to distinguish warm/cold
+ * reset. The mailbox_base is in the data section, not
+ * in .bss, this allows function to start using this
+ * variable before the runtime memory is initialized.
+ * ----------------------------------------------
+ */
+ .section .data.mailbox_base
+ .align 3
+ mailbox_base: .quad 0x0
+
+ /* ----------------------------------------------
+ * unsigned int plat_is_my_cpu_primary(void);
+ * This function checks if this is the primary CPU
+ * ----------------------------------------------
+ */
+func plat_is_my_cpu_primary
+ mrs x0, mpidr_el1
+ and x0, x0, #(MPIDR_CPU_MASK)
+ cmp x0, #PLAT_PRIMARY_CPU
+ cset x0, eq
+ ret
+endfunc plat_is_my_cpu_primary
+
+ /* ----------------------------------------------
+ * unsigned int plat_my_core_pos(void)
+ * This Function uses the plat_calc_core_pos()
+ * to get the index of the calling CPU.
+ * ----------------------------------------------
+ */
+func plat_my_core_pos
+ mrs x0, mpidr_el1
+ and x1, x0, #MPIDR_CPU_MASK
+ and x0, x0, #MPIDR_CLUSTER_MASK
+ add x0, x1, x0, LSR #6
+ ret
+endfunc plat_my_core_pos
+
+ /*
+ * unsigned int plat_calc_core_pos(uint64_t mpidr)
+ * helper function to calculate the core position.
+ * With this function.
+ */
+func plat_calc_core_pos
+ and x1, x0, #MPIDR_CPU_MASK
+ and x0, x0, #MPIDR_CLUSTER_MASK
+ add x0, x1, x0, LSR #6
+ ret
+endfunc plat_calc_core_pos
+
+ /* ---------------------------------------------
+ * function to get the entrypoint.
+ * ---------------------------------------------
+ */
+func plat_get_my_entrypoint
+ adrp x1, mailbox_base
+ ldr x0, [x1, :lo12:mailbox_base]
+ ret
+endfunc plat_get_my_entrypoint
+
+func imx_mailbox_init
+ adrp x1, mailbox_base
+ str x0, [x1, :lo12:mailbox_base]
+ ret
+endfunc imx_mailbox_init
+
+func plat_secondary_cold_boot_setup
+ b .
+endfunc plat_secondary_cold_boot_setup
+
+func plat_crash_console_init
+ ret
+endfunc plat_crash_console_init
+
+func plat_crash_console_putc
+ ret
+endfunc plat_crash_console_putc
+
+func platform_mem_init
+ ret
+endfunc platform_mem_init
diff --git a/plat/imx/common/imx8_topology.c b/plat/imx/common/imx8_topology.c
new file mode 100644
index 0000000..bcb7d59
--- /dev/null
+++ b/plat/imx/common/imx8_topology.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <platform.h>
+
+const unsigned char imx_power_domain_tree_desc[] = {
+ PWR_DOMAIN_AT_MAX_LVL,
+ PLATFORM_CLUSTER_COUNT,
+ PLATFORM_CORE_COUNT,
+};
+
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+ return imx_power_domain_tree_desc;
+}
+
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+ unsigned int cluster_id, cpu_id;
+
+ mpidr &= MPIDR_AFFINITY_MASK;
+
+ if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+ return -1;
+
+ cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
+ cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
+
+ if (cluster_id > PLATFORM_CLUSTER_COUNT ||
+ cpu_id > PLATFORM_MAX_CPU_PER_CLUSTER)
+ return -1;
+
+ return (cpu_id + (cluster_id * 4));
+}
diff --git a/plat/imx/common/include/plat_imx8.h b/plat/imx/common/include/plat_imx8.h
new file mode 100644
index 0000000..27d4c37
--- /dev/null
+++ b/plat/imx/common/include/plat_imx8.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_IMX8_H__
+#define __PLAT_IMX8_H__
+
+#include <gicv3.h>
+
+unsigned int plat_calc_core_pos(uint64_t mpidr);
+void imx_mailbox_init(uintptr_t base_addr);
+void plat_gic_driver_init(void);
+void plat_gic_init(void);
+void plat_gic_cpuif_enable(void);
+void plat_gic_cpuif_disable(void);
+void plat_gic_pcpu_init(void);
+
+#endif /*__PLAT_IMX8_H__ */
diff --git a/plat/imx/common/include/plat_macros.S b/plat/imx/common/include/plat_macros.S
new file mode 100644
index 0000000..30cce0a
--- /dev/null
+++ b/plat/imx/common/include/plat_macros.S
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * the below macros print out relevant GIC
+ * registers whenever an unhandled exception is
+ * taken in BL3-1
+ */
+.macro plat_print_gic_regs
+ /* TODO */
+.endm
+
+/*
+ * the below macros print out relevant interconnect
+ * registers whenever an unhandled exception is
+ * taken in BL3-1
+ */
+.macro plat_print_interconnect_regs
+ /* TODO */
+.endm
+
+/* ---------------------------------------------
+ * The below required platform porting macro
+ * prints out relevant platform registers
+ * whenever an unhandled exception is taken in
+ * BL31.
+ * ---------------------------------------------
+ */
+.macro plat_crash_print_regs
+ /* TODO */
+.endm
diff --git a/plat/imx/common/plat_imx8_gic.c b/plat/imx/common/plat_imx8_gic.c
new file mode 100644
index 0000000..242e31b
--- /dev/null
+++ b/plat/imx/common/plat_imx8_gic.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <bl_common.h>
+#include <gicv3.h>
+#include <plat_imx8.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <utils.h>
+
+/* the GICv3 driver only needs to be initialized in EL3 */
+uintptr_t rdistif_base_addrs[PLATFORM_CORE_COUNT];
+
+/* array of Group1 secure interrupts to be configured by the gic driver */
+const unsigned int g1s_interrupt_array[] = { 6 };
+
+/* array of Group0 interrupts to be configured by the gic driver */
+const unsigned int g0_interrupt_array[] = { 7 };
+
+static unsigned int plat_imx_mpidr_to_core_pos(unsigned long mpidr)
+{
+ return (unsigned int)plat_core_pos_by_mpidr(mpidr);
+}
+
+const gicv3_driver_data_t arm_gic_data = {
+ .gicd_base = PLAT_GICD_BASE,
+ .gicr_base = PLAT_GICR_BASE,
+ .g0_interrupt_num = ARRAY_SIZE(g0_interrupt_array),
+ .g1s_interrupt_num = ARRAY_SIZE(g1s_interrupt_array),
+ .g0_interrupt_array = g0_interrupt_array,
+ .g1s_interrupt_array = g1s_interrupt_array,
+ .rdistif_num = PLATFORM_CORE_COUNT,
+ .rdistif_base_addrs = rdistif_base_addrs,
+ .mpidr_to_core_pos = plat_imx_mpidr_to_core_pos,
+};
+
+void plat_gic_driver_init(void)
+{
+ /*
+ * the GICv3 driver is initialized in EL3 and does not need
+ * to be initialized again in S-EL1. This is because the S-EL1
+ * can use GIC system registers to manage interrupts and does
+ * not need GIC interface base addresses to be configured.
+ */
+#if IMAGE_BL31
+ gicv3_driver_init(&arm_gic_data);
+#endif
+}
+
+void plat_gic_init(void)
+{
+ gicv3_distif_init();
+ gicv3_rdistif_init(plat_my_core_pos());
+ gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+void plat_gic_cpuif_enable(void)
+{
+ gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+void plat_gic_cpuif_disable(void)
+{
+ gicv3_cpuif_disable(plat_my_core_pos());
+}
+
+void plat_gic_pcpu_init(void)
+{
+ gicv3_rdistif_init(plat_my_core_pos());
+}