arm/chip/qemu: add chip QEMU_CORTEXR5

This adds support for QEMU Cortex-R5 virtual processor on existing QEMU
Cortex-A7 code base with profile support in `armv7-r/` and `armv7-a/`.

Signed-off-by: Yanfeng Liu <p-liuyanfeng9@xiaomi.com>

arch/arm/src/qemu/CMakeLists.txt

@@ -20,7 +20,11 @@
 #
 # ##############################################################################
 
-set(SRCS qemu_boot.c qemu_serial.c qemu_irq.c qemu_timer.c qemu_memorymap.c)
+set(SRCS qemu_boot.c qemu_serial.c qemu_irq.c qemu_timer.c)
+
+if(CONFIG_ARCH_ARMV7A)
+  list(APPEND SRCS qemu_memorymap.c)
+endif()
 
 if(CONFIG_SMP)
   list(APPEND SRCS qemu_cpuboot.c)

arch/arm/src/qemu/Kconfig

@@ -25,6 +25,14 @@ config ARCH_CHIP_QEMU_CORTEXA7
 	select ARMV7A_HAVE_GTM
 	select ARMV7A_HAVE_PTM
 
+config ARCH_CHIP_QEMU_CORTEXR5
+	bool "Qemu virtual Processor (cortex-r5)"
+	select ARCH_CORTEXR5
+	select ARCH_HAVE_FPU
+	select ARCH_HAVE_LOWVECTORS
+	select ARMV7R_HAVE_GICv2
+	select ARMV7R_HAVE_PTM
+
 endchoice # Qemu Chip Selection
 
 endmenu # "Qemu Virt Chip Selection"

arch/arm/src/qemu/Make.defs

@@ -20,11 +20,20 @@
 #
 ############################################################################
 
+ifeq ($(CONFIG_ARCH_ARMV7A),y)
 include armv7-a/Make.defs
+endif
+
+ifeq ($(CONFIG_ARCH_ARMV7R),y)
+include armv7-r/Make.defs
+endif
 
 # qemu-specific C source files
-CHIP_CSRCS  = qemu_boot.c qemu_serial.c qemu_irq.c qemu_timer.c qemu_memorymap.c
-CHIP_CSRCS += qemu_pgalloc.c
+CHIP_CSRCS  = qemu_boot.c qemu_serial.c qemu_irq.c qemu_timer.c
+
+ifeq ($(CONFIG_ARCH_ARMV7A),y)
+CHIP_CSRCS += qemu_pgalloc.c qemu_memorymap.c
+endif
 
 ifeq ($(CONFIG_SMP),y)
   CHIP_CSRCS += qemu_cpuboot.c

arch/arm/src/qemu/qemu_boot.c

@@ -27,7 +27,10 @@
 #include <nuttx/config.h>
 
 #include "arm_internal.h"
-#include "arm_cpu_psci.h"
+
+#ifdef CONFIG_ARM_PSCI
+#  include "arm_cpu_psci.h"
+#endif
 
 #include "qemu_irq.h"
 #include "qemu_memorymap.h"
@@ -43,6 +46,10 @@
 #  include <nuttx/sched_note.h>
 #endif
 
+#ifdef CONFIG_ARCH_ARMV7R
+#  include <nuttx/init.h>
+#endif
+
 #include <nuttx/syslog/syslog_rpmsg.h>
 
 /****************************************************************************
@@ -73,9 +80,11 @@ void arm_boot(void)
   up_perf_init(0);
 #endif
 
+#ifdef CONFIG_ARCH_ARMV7A
   /* Set the page table for section */
 
   qemu_setupmappings();
+#endif
 
   arm_fpuconfig();
 
@@ -98,6 +107,12 @@ void arm_boot(void)
 #ifdef CONFIG_SYSLOG_RPMSG
   syslog_rpmsg_init_early(g_syslog_rpmsg_buf, sizeof(g_syslog_rpmsg_buf));
 #endif
+
+#ifdef CONFIG_ARCH_ARMV7R
+  /* dont return per armv7-r/arm_head.S design */
+
+  nx_start();
+#endif
 }
 
 #if defined(CONFIG_ARM_PSCI) && defined(CONFIG_SMP)