182 lines
6.1 KiB
C
182 lines
6.1 KiB
C
/*
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* QEMU ETRAX System Emulator
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*
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* Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "sysbus.h"
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#include "boards.h"
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#include "sysemu.h"
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#include "net.h"
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#include "flash.h"
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#include "etraxfs.h"
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#include "loader.h"
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#include "elf.h"
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#define FLASH_SIZE 0x2000000
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#define INTMEM_SIZE (128 * 1024)
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static uint32_t bootstrap_pc;
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static void main_cpu_reset(void *opaque)
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{
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CPUState *env = opaque;
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cpu_reset(env);
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env->pc = bootstrap_pc;
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}
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static
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void bareetraxfs_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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DeviceState *dev;
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SysBusDevice *s;
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CPUState *env;
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qemu_irq irq[30], nmi[2], *cpu_irq;
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void *etraxfs_dmac;
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struct etraxfs_dma_client *eth[2] = {NULL, NULL};
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int kernel_size;
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DriveInfo *dinfo;
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int i;
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ram_addr_t phys_ram;
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ram_addr_t phys_flash;
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ram_addr_t phys_intmem;
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/* init CPUs */
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if (cpu_model == NULL) {
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cpu_model = "crisv32";
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}
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env = cpu_init(cpu_model);
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qemu_register_reset(main_cpu_reset, env);
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/* allocate RAM */
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phys_ram = qemu_ram_alloc(ram_size);
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cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
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/* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
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internal memory. */
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phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
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cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
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phys_intmem | IO_MEM_RAM);
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phys_flash = qemu_ram_alloc(FLASH_SIZE);
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dinfo = drive_get(IF_PFLASH, 0, 0);
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pflash_cfi02_register(0x0, phys_flash,
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dinfo ? dinfo->bdrv : NULL, (64 * 1024),
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FLASH_SIZE >> 16,
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1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
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0x555, 0x2aa);
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cpu_irq = cris_pic_init_cpu(env);
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dev = qdev_create(NULL, "etraxfs,pic");
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/* FIXME: Is there a proper way to signal vectors to the CPU core? */
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qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
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qdev_init(dev);
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s = sysbus_from_qdev(dev);
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sysbus_mmio_map(s, 0, 0x3001c000);
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sysbus_connect_irq(s, 0, cpu_irq[0]);
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sysbus_connect_irq(s, 1, cpu_irq[1]);
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for (i = 0; i < 30; i++) {
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irq[i] = qdev_get_gpio_in(dev, i);
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}
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nmi[0] = qdev_get_gpio_in(dev, 30);
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nmi[1] = qdev_get_gpio_in(dev, 31);
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etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
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for (i = 0; i < 10; i++) {
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/* On ETRAX, odd numbered channels are inputs. */
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etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
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}
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/* Add the two ethernet blocks. */
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eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
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if (nb_nics > 1)
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eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
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/* The DMA Connector block is missing, hardwire things for now. */
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etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
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etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
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if (eth[1]) {
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etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
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etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
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}
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/* 2 timers. */
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sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
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sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
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for (i = 0; i < 4; i++) {
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sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
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irq[0x14 + i]);
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}
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if (kernel_filename) {
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uint64_t entry, high;
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int kcmdline_len;
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/* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
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devboard SDK. */
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kernel_size = load_elf(kernel_filename, -0x80000000LL,
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&entry, NULL, &high, 0, ELF_MACHINE, 0);
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bootstrap_pc = entry;
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if (kernel_size < 0) {
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/* Takes a kimage from the axis devboard SDK. */
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kernel_size = load_image_targphys(kernel_filename, 0x40004000,
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ram_size);
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bootstrap_pc = 0x40004000;
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env->regs[9] = 0x40004000 + kernel_size;
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}
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env->regs[8] = 0x56902387; /* RAM init magic. */
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if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
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if (kcmdline_len > 256) {
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fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
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exit(1);
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}
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/* Let the kernel know we are modifying the cmdline. */
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env->regs[10] = 0x87109563;
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env->regs[11] = 0x40000000;
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pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
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}
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}
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env->pc = bootstrap_pc;
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printf ("pc =%x\n", env->pc);
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printf ("ram size =%ld\n", ram_size);
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}
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static QEMUMachine bareetraxfs_machine = {
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.name = "bareetraxfs",
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.desc = "Bare ETRAX FS board",
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.init = bareetraxfs_init,
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.is_default = 1,
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};
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static void bareetraxfs_machine_init(void)
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{
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qemu_register_machine(&bareetraxfs_machine);
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}
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machine_init(bareetraxfs_machine_init);
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