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[Qemu-devel] [RFC 06/28] target-xtensa: add sample board
From: |
Max Filippov |
Subject: |
[Qemu-devel] [RFC 06/28] target-xtensa: add sample board |
Date: |
Wed, 4 May 2011 04:59:06 +0400 |
Sample board and sample CPU core are used for debug and may be used for
development of custom SoC emulators.
This board has two fixed size memory regions for DTCM and ITCM and
variable length SRAM region.
Signed-off-by: Max Filippov <address@hidden>
---
Makefile.target | 1 +
hw/xtensa_sample.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 69 insertions(+), 0 deletions(-)
create mode 100644 hw/xtensa_sample.c
diff --git a/Makefile.target b/Makefile.target
index 7e7afd2..8d6d081 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -367,6 +367,7 @@ obj-s390x-y = s390-virtio-bus.o s390-virtio.o
obj-alpha-y = alpha_palcode.o
obj-xtensa-y += xtensa_pic.o
+obj-xtensa-y += xtensa_sample.o
main.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
diff --git a/hw/xtensa_sample.c b/hw/xtensa_sample.c
new file mode 100644
index 0000000..8103675
--- /dev/null
+++ b/hw/xtensa_sample.c
@@ -0,0 +1,68 @@
+#include "sysemu.h"
+#include "boards.h"
+#include "loader.h"
+#include "elf.h"
+
+static void xtensa_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+ CPUState *env = NULL;
+ ram_addr_t ram_offset;
+ int n;
+
+ for (n = 0; n < smp_cpus; n++) {
+ env = cpu_init(cpu_model);
+ if (!env) {
+ fprintf(stderr, "Unable to find CPU definition\n");
+ exit(1);
+ }
+ }
+
+ ram_offset = qemu_ram_alloc(NULL, "xtensa.dram", 0x10000);
+ cpu_register_physical_memory(0x5ffd0000, 0x10000, ram_offset);
+
+ ram_offset = qemu_ram_alloc(NULL, "xtensa.iram", 0x20000);
+ cpu_register_physical_memory(0x5ffe0000, 0x20000, ram_offset);
+
+ ram_offset = qemu_ram_alloc(NULL, "xtensa.sram", ram_size);
+ cpu_register_physical_memory(0x60000000, ram_size, ram_offset);
+
+ if (kernel_filename) {
+ uint64_t elf_entry;
+ uint64_t elf_lowaddr;
+
+ int success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
+ &elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
+ if (success > 0) {
+ env->pc = elf_entry;
+ }
+ }
+}
+
+static void xtensa_sample_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+ if (!cpu_model) {
+ cpu_model = "sample-xtensa-core";
+ }
+ xtensa_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
+ initrd_filename, cpu_model);
+}
+
+static QEMUMachine xtensa_sample_machine = {
+ .name = "sample-xtensa-machine",
+ .desc = "Sample Xtensa machine (sample Xtensa core)",
+ .init = xtensa_sample_init,
+ .max_cpus = 4,
+};
+
+static void xtensa_sample_machine_init(void)
+{
+ qemu_register_machine(&xtensa_sample_machine);
+}
+
+machine_init(xtensa_sample_machine_init);
--
1.7.3.4
- [Qemu-devel] [RFC 01/28] target-xtensa: add target stubs, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 02/28] target-xtensa: add target to the configure script, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 03/28] target-xtensa: implement disas_xtensa_insn, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 04/28] target-xtensa: implement narrow instructions, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 05/28] target-xtensa: implement RT0 group, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 06/28] target-xtensa: add sample board,
Max Filippov <=
- [Qemu-devel] [RFC 07/28] target-xtensa: add gdb support, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 08/28] target-xtensa: implement conditional jumps, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 09/28] target-xtensa: implement JX/RET0/CALLX, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 10/28] target-xtensa: add special and user registers, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 11/28] target-xtensa: implement RST3 group, Max Filippov, 2011/05/03
- [Qemu-devel] [RFC 12/28] target-xtensa: implement shifts (ST1 and RST1 groups), Max Filippov, 2011/05/03