From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:52955) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QHQRn-0004Dm-Ow for qemu-devel@nongnu.org; Tue, 03 May 2011 21:00:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QHQRm-0000iq-UH for qemu-devel@nongnu.org; Tue, 03 May 2011 21:00:11 -0400 Received: from mail-ew0-f45.google.com ([209.85.215.45]:56465) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QHQRm-0000ZL-M5 for qemu-devel@nongnu.org; Tue, 03 May 2011 21:00:10 -0400 Received: by mail-ew0-f45.google.com with SMTP id 24so221435ewy.4 for ; Tue, 03 May 2011 18:00:10 -0700 (PDT) From: Max Filippov Date: Wed, 4 May 2011 04:59:06 +0400 Message-Id: <1304470768-16924-6-git-send-email-jcmvbkbc@gmail.com> In-Reply-To: <1304470768-16924-1-git-send-email-jcmvbkbc@gmail.com> References: <1304470768-16924-1-git-send-email-jcmvbkbc@gmail.com> Subject: [Qemu-devel] [RFC 06/28] target-xtensa: add sample board List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Max Filippov 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 --- 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