+++ /dev/null
-/*
- * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of the Open Source and Linux Lab nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sysemu/sysemu.h"
-#include "hw/boards.h"
-#include "hw/loader.h"
-#include "elf.h"
-#include "exec/memory.h"
-#include "exec/address-spaces.h"
-#include "hw/serial.h"
-#include "net/net.h"
-#include "hw/sysbus.h"
-#include "hw/flash.h"
-#include "sysemu/blockdev.h"
-#include "char/char.h"
-#include "hw/xtensa_bootparam.h"
-
-typedef struct LxBoardDesc {
- size_t flash_size;
- size_t flash_sector_size;
- size_t sram_size;
-} LxBoardDesc;
-
-typedef struct Lx60FpgaState {
- MemoryRegion iomem;
- uint32_t leds;
- uint32_t switches;
-} Lx60FpgaState;
-
-static void lx60_fpga_reset(void *opaque)
-{
- Lx60FpgaState *s = opaque;
-
- s->leds = 0;
- s->switches = 0;
-}
-
-static uint64_t lx60_fpga_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- Lx60FpgaState *s = opaque;
-
- switch (addr) {
- case 0x0: /*build date code*/
- return 0x09272011;
-
- case 0x4: /*processor clock frequency, Hz*/
- return 10000000;
-
- case 0x8: /*LEDs (off = 0, on = 1)*/
- return s->leds;
-
- case 0xc: /*DIP switches (off = 0, on = 1)*/
- return s->switches;
- }
- return 0;
-}
-
-static void lx60_fpga_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- Lx60FpgaState *s = opaque;
-
- switch (addr) {
- case 0x8: /*LEDs (off = 0, on = 1)*/
- s->leds = val;
- break;
-
- case 0x10: /*board reset*/
- if (val == 0xdead) {
- qemu_system_reset_request();
- }
- break;
- }
-}
-
-static const MemoryRegionOps lx60_fpga_ops = {
- .read = lx60_fpga_read,
- .write = lx60_fpga_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static Lx60FpgaState *lx60_fpga_init(MemoryRegion *address_space,
- hwaddr base)
-{
- Lx60FpgaState *s = g_malloc(sizeof(Lx60FpgaState));
-
- memory_region_init_io(&s->iomem, &lx60_fpga_ops, s,
- "lx60.fpga", 0x10000);
- memory_region_add_subregion(address_space, base, &s->iomem);
- lx60_fpga_reset(s);
- qemu_register_reset(lx60_fpga_reset, s);
- return s;
-}
-
-static void lx60_net_init(MemoryRegion *address_space,
- hwaddr base,
- hwaddr descriptors,
- hwaddr buffers,
- qemu_irq irq, NICInfo *nd)
-{
- DeviceState *dev;
- SysBusDevice *s;
- MemoryRegion *ram;
-
- dev = qdev_create(NULL, "open_eth");
- qdev_set_nic_properties(dev, nd);
- qdev_init_nofail(dev);
-
- s = SYS_BUS_DEVICE(dev);
- sysbus_connect_irq(s, 0, irq);
- memory_region_add_subregion(address_space, base,
- sysbus_mmio_get_region(s, 0));
- memory_region_add_subregion(address_space, descriptors,
- sysbus_mmio_get_region(s, 1));
-
- ram = g_malloc(sizeof(*ram));
- memory_region_init_ram(ram, "open_eth.ram", 16384);
- vmstate_register_ram_global(ram);
- memory_region_add_subregion(address_space, buffers, ram);
-}
-
-static uint64_t translate_phys_addr(void *env, uint64_t addr)
-{
- return cpu_get_phys_page_debug(env, addr);
-}
-
-static void lx60_reset(void *opaque)
-{
- XtensaCPU *cpu = opaque;
-
- cpu_reset(CPU(cpu));
-}
-
-static void lx_init(const LxBoardDesc *board, QEMUMachineInitArgs *args)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
- int be = 1;
-#else
- int be = 0;
-#endif
- MemoryRegion *system_memory = get_system_memory();
- XtensaCPU *cpu = NULL;
- CPUXtensaState *env = NULL;
- MemoryRegion *ram, *rom, *system_io;
- DriveInfo *dinfo;
- pflash_t *flash = NULL;
- const char *cpu_model = args->cpu_model;
- const char *kernel_filename = args->kernel_filename;
- const char *kernel_cmdline = args->kernel_cmdline;
- int n;
-
- if (!cpu_model) {
- cpu_model = XTENSA_DEFAULT_CPU_MODEL;
- }
-
- for (n = 0; n < smp_cpus; n++) {
- cpu = cpu_xtensa_init(cpu_model);
- if (cpu == NULL) {
- fprintf(stderr, "Unable to find CPU definition\n");
- exit(1);
- }
- env = &cpu->env;
-
- env->sregs[PRID] = n;
- qemu_register_reset(lx60_reset, cpu);
- /* Need MMU initialized prior to ELF loading,
- * so that ELF gets loaded into virtual addresses
- */
- cpu_reset(CPU(cpu));
- }
-
- ram = g_malloc(sizeof(*ram));
- memory_region_init_ram(ram, "lx60.dram", args->ram_size);
- vmstate_register_ram_global(ram);
- memory_region_add_subregion(system_memory, 0, ram);
-
- system_io = g_malloc(sizeof(*system_io));
- memory_region_init(system_io, "lx60.io", 224 * 1024 * 1024);
- memory_region_add_subregion(system_memory, 0xf0000000, system_io);
- lx60_fpga_init(system_io, 0x0d020000);
- if (nd_table[0].used) {
- lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
- xtensa_get_extint(env, 1), nd_table);
- }
-
- if (!serial_hds[0]) {
- serial_hds[0] = qemu_chr_new("serial0", "null", NULL);
- }
-
- serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0),
- 115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
-
- dinfo = drive_get(IF_PFLASH, 0, 0);
- if (dinfo) {
- flash = pflash_cfi01_register(0xf8000000,
- NULL, "lx60.io.flash", board->flash_size,
- dinfo->bdrv, board->flash_sector_size,
- board->flash_size / board->flash_sector_size,
- 4, 0x0000, 0x0000, 0x0000, 0x0000, be);
- if (flash == NULL) {
- fprintf(stderr, "Unable to mount pflash\n");
- exit(1);
- }
- }
-
- /* Use presence of kernel file name as 'boot from SRAM' switch. */
- if (kernel_filename) {
- rom = g_malloc(sizeof(*rom));
- memory_region_init_ram(rom, "lx60.sram", board->sram_size);
- vmstate_register_ram_global(rom);
- memory_region_add_subregion(system_memory, 0xfe000000, rom);
-
- /* Put kernel bootparameters to the end of that SRAM */
- if (kernel_cmdline) {
- size_t cmdline_size = strlen(kernel_cmdline) + 1;
- size_t bp_size = sizeof(BpTag[4]) + cmdline_size;
- uint32_t tagptr = (0xfe000000 + board->sram_size - bp_size) & ~0xff;
-
- env->regs[2] = tagptr;
-
- tagptr = put_tag(tagptr, 0x7b0b, 0, NULL);
- if (cmdline_size > 1) {
- tagptr = put_tag(tagptr, 0x1001,
- cmdline_size, kernel_cmdline);
- }
- tagptr = put_tag(tagptr, 0x7e0b, 0, NULL);
- }
- uint64_t elf_entry;
- uint64_t elf_lowaddr;
- int success = load_elf(kernel_filename, translate_phys_addr, env,
- &elf_entry, &elf_lowaddr, NULL, be, ELF_MACHINE, 0);
- if (success > 0) {
- env->pc = elf_entry;
- }
- } else {
- if (flash) {
- MemoryRegion *flash_mr = pflash_cfi01_get_memory(flash);
- MemoryRegion *flash_io = g_malloc(sizeof(*flash_io));
-
- memory_region_init_alias(flash_io, "lx60.flash",
- flash_mr, 0, board->flash_size);
- memory_region_add_subregion(system_memory, 0xfe000000,
- flash_io);
- }
- }
-}
-
-static void xtensa_lx60_init(QEMUMachineInitArgs *args)
-{
- static const LxBoardDesc lx60_board = {
- .flash_size = 0x400000,
- .flash_sector_size = 0x10000,
- .sram_size = 0x20000,
- };
- lx_init(&lx60_board, args);
-}
-
-static void xtensa_lx200_init(QEMUMachineInitArgs *args)
-{
- static const LxBoardDesc lx200_board = {
- .flash_size = 0x1000000,
- .flash_sector_size = 0x20000,
- .sram_size = 0x2000000,
- };
- lx_init(&lx200_board, args);
-}
-
-static QEMUMachine xtensa_lx60_machine = {
- .name = "lx60",
- .desc = "lx60 EVB (" XTENSA_DEFAULT_CPU_MODEL ")",
- .init = xtensa_lx60_init,
- .max_cpus = 4,
- DEFAULT_MACHINE_OPTIONS,
-};
-
-static QEMUMachine xtensa_lx200_machine = {
- .name = "lx200",
- .desc = "lx200 EVB (" XTENSA_DEFAULT_CPU_MODEL ")",
- .init = xtensa_lx200_init,
- .max_cpus = 4,
- DEFAULT_MACHINE_OPTIONS,
-};
-
-static void xtensa_lx_machines_init(void)
-{
- qemu_register_machine(&xtensa_lx60_machine);
- qemu_register_machine(&xtensa_lx200_machine);
-}
-
-machine_init(xtensa_lx_machines_init);
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