82b25dc8b0
LX60 carry 4 Mbyte FLASH and 128 Kbyte SRAM, LX200 carry 16 Mbyte FLASH and 32 Mbyte SRAM. Either of these memories may be mapped to the system ROM region. Select boot from FLASH if -kernel option is not specified, otherwise boot from SRAM. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
297 lines
9 KiB
C
297 lines
9 KiB
C
/*
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* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Open Source and Linux Lab nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sysemu.h"
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#include "boards.h"
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#include "loader.h"
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#include "elf.h"
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#include "memory.h"
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#include "exec-memory.h"
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#include "pc.h"
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#include "sysbus.h"
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#include "flash.h"
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typedef struct LxBoardDesc {
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size_t flash_size;
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size_t flash_sector_size;
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size_t sram_size;
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} LxBoardDesc;
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typedef struct Lx60FpgaState {
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MemoryRegion iomem;
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uint32_t leds;
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uint32_t switches;
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} Lx60FpgaState;
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static void lx60_fpga_reset(void *opaque)
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{
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Lx60FpgaState *s = opaque;
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s->leds = 0;
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s->switches = 0;
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}
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static uint64_t lx60_fpga_read(void *opaque, target_phys_addr_t addr,
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unsigned size)
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{
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Lx60FpgaState *s = opaque;
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switch (addr) {
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case 0x0: /*build date code*/
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return 0x27092011;
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case 0x4: /*processor clock frequency, Hz*/
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return 10000000;
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case 0x8: /*LEDs (off = 0, on = 1)*/
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return s->leds;
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case 0xc: /*DIP switches (off = 0, on = 1)*/
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return s->switches;
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}
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return 0;
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}
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static void lx60_fpga_write(void *opaque, target_phys_addr_t addr,
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uint64_t val, unsigned size)
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{
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Lx60FpgaState *s = opaque;
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switch (addr) {
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case 0x8: /*LEDs (off = 0, on = 1)*/
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s->leds = val;
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break;
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case 0x10: /*board reset*/
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if (val == 0xdead) {
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qemu_system_reset_request();
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}
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break;
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}
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}
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static const MemoryRegionOps lx60_fpga_ops = {
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.read = lx60_fpga_read,
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.write = lx60_fpga_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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};
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static Lx60FpgaState *lx60_fpga_init(MemoryRegion *address_space,
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target_phys_addr_t base)
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{
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Lx60FpgaState *s = g_malloc(sizeof(Lx60FpgaState));
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memory_region_init_io(&s->iomem, &lx60_fpga_ops, s,
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"lx60-fpga", 0x10000);
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memory_region_add_subregion(address_space, base, &s->iomem);
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lx60_fpga_reset(s);
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qemu_register_reset(lx60_fpga_reset, s);
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return s;
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}
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static void lx60_net_init(MemoryRegion *address_space,
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target_phys_addr_t base,
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target_phys_addr_t descriptors,
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target_phys_addr_t buffers,
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qemu_irq irq, NICInfo *nd)
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{
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DeviceState *dev;
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SysBusDevice *s;
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MemoryRegion *ram;
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dev = qdev_create(NULL, "open_eth");
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qdev_set_nic_properties(dev, nd);
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qdev_init_nofail(dev);
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s = sysbus_from_qdev(dev);
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sysbus_connect_irq(s, 0, irq);
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memory_region_add_subregion(address_space, base,
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sysbus_mmio_get_region(s, 0));
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memory_region_add_subregion(address_space, descriptors,
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sysbus_mmio_get_region(s, 1));
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ram = g_malloc(sizeof(*ram));
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memory_region_init_ram(ram, NULL, "open_eth.ram", 16384);
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memory_region_add_subregion(address_space, buffers, ram);
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}
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static uint64_t translate_phys_addr(void *env, uint64_t addr)
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{
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return cpu_get_phys_page_debug(env, addr);
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}
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static void lx60_reset(void *env)
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{
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cpu_reset(env);
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}
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static void lx_init(const LxBoardDesc *board,
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ram_addr_t ram_size, const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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#ifdef TARGET_WORDS_BIGENDIAN
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int be = 1;
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#else
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int be = 0;
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#endif
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MemoryRegion *system_memory = get_system_memory();
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CPUState *env = NULL;
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MemoryRegion *ram, *rom, *system_io;
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DriveInfo *dinfo;
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pflash_t *flash = NULL;
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int n;
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if (!cpu_model) {
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cpu_model = "dc232b";
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}
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for (n = 0; n < smp_cpus; n++) {
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env = cpu_init(cpu_model);
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if (!env) {
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fprintf(stderr, "Unable to find CPU definition\n");
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exit(1);
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}
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env->sregs[PRID] = n;
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qemu_register_reset(lx60_reset, env);
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/* Need MMU initialized prior to ELF loading,
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* so that ELF gets loaded into virtual addresses
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*/
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cpu_reset(env);
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}
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ram = g_malloc(sizeof(*ram));
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memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size);
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memory_region_add_subregion(system_memory, 0, ram);
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rom = g_malloc(sizeof(*rom));
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memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000);
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memory_region_add_subregion(system_memory, 0xfe000000, rom);
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system_io = g_malloc(sizeof(*system_io));
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memory_region_init(system_io, "system.io", 224 * 1024 * 1024);
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memory_region_add_subregion(system_memory, 0xf0000000, system_io);
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lx60_fpga_init(system_io, 0x0d020000);
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if (nd_table[0].vlan) {
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lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
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xtensa_get_extint(env, 1), nd_table);
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}
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if (!serial_hds[0]) {
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serial_hds[0] = qemu_chr_new("serial0", "null", NULL);
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}
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serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0),
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115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
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dinfo = drive_get(IF_PFLASH, 0, 0);
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if (dinfo) {
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flash = pflash_cfi01_register(0xf8000000,
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NULL, "lx60.io.flash", board->flash_size,
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dinfo->bdrv, board->flash_sector_size,
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board->flash_size / board->flash_sector_size,
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4, 0x0000, 0x0000, 0x0000, 0x0000, be);
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if (flash == NULL) {
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fprintf(stderr, "Unable to mount pflash\n");
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exit(1);
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}
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}
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/* Use presence of kernel file name as 'boot from SRAM' switch. */
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if (kernel_filename) {
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uint64_t elf_entry;
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uint64_t elf_lowaddr;
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int success = load_elf(kernel_filename, translate_phys_addr, env,
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&elf_entry, &elf_lowaddr, NULL, be, ELF_MACHINE, 0);
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if (success > 0) {
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env->pc = elf_entry;
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}
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} else {
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if (flash) {
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MemoryRegion *flash_mr = pflash_cfi01_get_memory(flash);
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MemoryRegion *flash_io = g_malloc(sizeof(*flash_io));
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memory_region_init_alias(flash_io, "lx60.flash",
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flash_mr, 0, board->flash_size);
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memory_region_add_subregion(system_memory, 0xfe000000,
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flash_io);
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}
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}
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}
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static void xtensa_lx60_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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static const LxBoardDesc lx60_board = {
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.flash_size = 0x400000,
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.flash_sector_size = 0x10000,
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.sram_size = 0x20000,
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};
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lx_init(&lx60_board, ram_size, boot_device,
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kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model);
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}
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static void xtensa_lx200_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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static const LxBoardDesc lx200_board = {
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.flash_size = 0x1000000,
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.flash_sector_size = 0x20000,
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.sram_size = 0x2000000,
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};
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lx_init(&lx200_board, ram_size, boot_device,
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kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model);
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}
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static QEMUMachine xtensa_lx60_machine = {
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.name = "lx60",
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.desc = "lx60 EVB (dc232b)",
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.init = xtensa_lx60_init,
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.max_cpus = 4,
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};
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static QEMUMachine xtensa_lx200_machine = {
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.name = "lx200",
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.desc = "lx200 EVB (dc232b)",
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.init = xtensa_lx200_init,
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.max_cpus = 4,
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};
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static void xtensa_lx_machines_init(void)
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{
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qemu_register_machine(&xtensa_lx60_machine);
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qemu_register_machine(&xtensa_lx200_machine);
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}
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machine_init(xtensa_lx_machines_init);
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