bda19d7bb5
Add the RX machine internally simulated in GDB. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [PMD: Use TYPE_RX62N_CPU, use #define for RX62N_NR_TMR/CMT/SCI, renamed CPU -> MCU, device -> microcontroller] Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200224141923.82118-18-ysato@users.sourceforge.jp> [PMD: Split of MCU, rename gdbsim, Add gdbsim-r5f562n7/r5f562n8] Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
199 lines
6.5 KiB
C
199 lines
6.5 KiB
C
/*
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* RX QEMU GDB simulator
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*
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* Copyright (c) 2019 Yoshinori Sato
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu/cutils.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "cpu.h"
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#include "hw/hw.h"
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#include "hw/sysbus.h"
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#include "hw/loader.h"
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#include "hw/rx/rx62n.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/qtest.h"
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#include "sysemu/device_tree.h"
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#include "hw/boards.h"
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/* Same address of GDB integrated simulator */
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#define SDRAM_BASE EXT_CS_BASE
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typedef struct RxGdbSimMachineClass {
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/*< private >*/
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MachineClass parent_class;
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/*< public >*/
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const char *mcu_name;
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uint32_t xtal_freq_hz;
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} RxGdbSimMachineClass;
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typedef struct RxGdbSimMachineState {
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/*< private >*/
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MachineState parent_obj;
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/*< public >*/
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RX62NState mcu;
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} RxGdbSimMachineState;
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#define TYPE_RX_GDBSIM_MACHINE MACHINE_TYPE_NAME("rx62n-common")
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#define RX_GDBSIM_MACHINE(obj) \
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OBJECT_CHECK(RxGdbSimMachineState, (obj), TYPE_RX_GDBSIM_MACHINE)
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#define RX_GDBSIM_MACHINE_CLASS(klass) \
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OBJECT_CLASS_CHECK(RxGdbSimMachineClass, (klass), TYPE_RX_GDBSIM_MACHINE)
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#define RX_GDBSIM_MACHINE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(RxGdbSimMachineClass, (obj), TYPE_RX_GDBSIM_MACHINE)
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static void rx_load_image(RXCPU *cpu, const char *filename,
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uint32_t start, uint32_t size)
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{
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static uint32_t extable[32];
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long kernel_size;
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int i;
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kernel_size = load_image_targphys(filename, start, size);
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n", filename);
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exit(1);
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}
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cpu->env.pc = start;
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/* setup exception trap trampoline */
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/* linux kernel only works little-endian mode */
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for (i = 0; i < ARRAY_SIZE(extable); i++) {
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extable[i] = cpu_to_le32(0x10 + i * 4);
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}
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rom_add_blob_fixed("extable", extable, sizeof(extable), VECTOR_TABLE_BASE);
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}
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static void rx_gdbsim_init(MachineState *machine)
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{
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MachineClass *mc = MACHINE_GET_CLASS(machine);
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RxGdbSimMachineState *s = RX_GDBSIM_MACHINE(machine);
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RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_GET_CLASS(machine);
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MemoryRegion *sysmem = get_system_memory();
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const char *kernel_filename = machine->kernel_filename;
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const char *dtb_filename = machine->dtb;
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if (machine->ram_size < mc->default_ram_size) {
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char *sz = size_to_str(mc->default_ram_size);
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error_report("Invalid RAM size, should be more than %s", sz);
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g_free(sz);
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}
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/* Allocate memory space */
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memory_region_add_subregion(sysmem, SDRAM_BASE, machine->ram);
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/* Initialize MCU */
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object_initialize_child(OBJECT(machine), "mcu", &s->mcu, rxc->mcu_name);
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object_property_set_link(OBJECT(&s->mcu), OBJECT(sysmem),
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"main-bus", &error_abort);
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object_property_set_uint(OBJECT(&s->mcu), rxc->xtal_freq_hz,
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"xtal-frequency-hz", &error_abort);
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object_property_set_bool(OBJECT(&s->mcu), kernel_filename != NULL,
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"load-kernel", &error_abort);
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qdev_realize(DEVICE(&s->mcu), NULL, &error_abort);
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/* Load kernel and dtb */
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if (kernel_filename) {
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ram_addr_t kernel_offset;
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/*
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* The kernel image is loaded into
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* the latter half of the SDRAM space.
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*/
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kernel_offset = machine->ram_size / 2;
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rx_load_image(RXCPU(first_cpu), kernel_filename,
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SDRAM_BASE + kernel_offset, kernel_offset);
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if (dtb_filename) {
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ram_addr_t dtb_offset;
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int dtb_size;
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void *dtb;
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dtb = load_device_tree(dtb_filename, &dtb_size);
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if (dtb == NULL) {
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error_report("Couldn't open dtb file %s", dtb_filename);
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exit(1);
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}
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if (machine->kernel_cmdline &&
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qemu_fdt_setprop_string(dtb, "/chosen", "bootargs",
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machine->kernel_cmdline) < 0) {
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error_report("Couldn't set /chosen/bootargs");
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exit(1);
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}
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/* DTB is located at the end of SDRAM space. */
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dtb_offset = machine->ram_size - dtb_size;
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rom_add_blob_fixed("dtb", dtb, dtb_size,
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SDRAM_BASE + dtb_offset);
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/* Set dtb address to R1 */
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RXCPU(first_cpu)->env.regs[1] = SDRAM_BASE + dtb_offset;
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}
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}
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}
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static void rx_gdbsim_class_init(ObjectClass *oc, void *data)
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{
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MachineClass *mc = MACHINE_CLASS(oc);
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mc->init = rx_gdbsim_init;
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mc->default_cpu_type = TYPE_RX62N_CPU;
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mc->default_ram_size = 16 * MiB;
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mc->default_ram_id = "ext-sdram";
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}
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static void rx62n7_class_init(ObjectClass *oc, void *data)
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{
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RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_CLASS(oc);
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MachineClass *mc = MACHINE_CLASS(oc);
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rxc->mcu_name = TYPE_R5F562N7_MCU;
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rxc->xtal_freq_hz = 12 * 1000 * 1000;
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mc->desc = "gdb simulator (R5F562N7 MCU and external RAM)";
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};
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static void rx62n8_class_init(ObjectClass *oc, void *data)
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{
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RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_CLASS(oc);
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MachineClass *mc = MACHINE_CLASS(oc);
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rxc->mcu_name = TYPE_R5F562N8_MCU;
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rxc->xtal_freq_hz = 12 * 1000 * 1000;
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mc->desc = "gdb simulator (R5F562N8 MCU and external RAM)";
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};
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static const TypeInfo rx_gdbsim_types[] = {
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{
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.name = MACHINE_TYPE_NAME("gdbsim-r5f562n7"),
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.parent = TYPE_RX_GDBSIM_MACHINE,
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.class_init = rx62n7_class_init,
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}, {
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.name = MACHINE_TYPE_NAME("gdbsim-r5f562n8"),
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.parent = TYPE_RX_GDBSIM_MACHINE,
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.class_init = rx62n8_class_init,
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}, {
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.name = TYPE_RX_GDBSIM_MACHINE,
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.parent = TYPE_MACHINE,
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.instance_size = sizeof(RxGdbSimMachineState),
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.class_size = sizeof(RxGdbSimMachineClass),
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.class_init = rx_gdbsim_class_init,
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.abstract = true,
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}
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};
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DEFINE_TYPES(rx_gdbsim_types)
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