/* * QEMU ETRAX System Emulator * * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include <time.h> #include <sys/time.h> #include "hw.h" #include "net.h" #include "flash.h" #include "sysemu.h" #include "devices.h" #include "boards.h" #include "etraxfs.h" #define FLASH_SIZE 0x2000000 #define INTMEM_SIZE (128 * 1024) static uint32_t bootstrap_pc; static void main_cpu_reset(void *opaque) { CPUState *env = opaque; cpu_reset(env); env->pc = bootstrap_pc; } static void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size, const char *boot_device, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model) { CPUState *env; struct etraxfs_pic *pic; void *etraxfs_dmac; struct etraxfs_dma_client *eth[2] = {NULL, NULL}; int kernel_size; int i; ram_addr_t phys_ram; ram_addr_t phys_flash; ram_addr_t phys_intmem; /* init CPUs */ if (cpu_model == NULL) { cpu_model = "crisv32"; } env = cpu_init(cpu_model); qemu_register_reset(main_cpu_reset, env); /* allocate RAM */ phys_ram = qemu_ram_alloc(ram_size); cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM); /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the internal memory. */ phys_intmem = qemu_ram_alloc(INTMEM_SIZE); cpu_register_physical_memory(0x38000000, INTMEM_SIZE, phys_intmem | IO_MEM_RAM); phys_flash = qemu_ram_alloc(FLASH_SIZE); i = drive_get_index(IF_PFLASH, 0, 0); pflash_cfi02_register(0x0, phys_flash, i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024), FLASH_SIZE >> 16, 1, 2, 0x0000, 0x0000, 0x0000, 0x0000, 0x555, 0x2aa); pic = etraxfs_pic_init(env, 0x3001c000); etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10); for (i = 0; i < 10; i++) { /* On ETRAX, odd numbered channels are inputs. */ etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1); } /* Add the two ethernet blocks. */ eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000, 1); if (nb_nics > 1) eth[1] = etraxfs_eth_init(&nd_table[1], env, pic->irq + 26, 0x30036000, 2); /* The DMA Connector block is missing, hardwire things for now. */ etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]); etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1); if (eth[1]) { etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]); etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1); } /* 2 timers. */ etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000); etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000); for (i = 0; i < 4; i++) { if (serial_hds[i]) { etraxfs_ser_init(env, pic->irq + 0x14 + i, serial_hds[i], 0x30026000 + i * 0x2000); } } if (kernel_filename) { uint64_t entry, high; int kcmdline_len; /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis devboard SDK. */ kernel_size = load_elf(kernel_filename, -0x80000000LL, &entry, NULL, &high); bootstrap_pc = entry; if (kernel_size < 0) { /* Takes a kimage from the axis devboard SDK. */ kernel_size = load_image_targphys(kernel_filename, 0x40004000, ram_size); bootstrap_pc = 0x40004000; env->regs[9] = 0x40004000 + kernel_size; } env->regs[8] = 0x56902387; /* RAM init magic. */ if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) { if (kcmdline_len > 256) { fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n"); exit(1); } pstrcpy_targphys(high, 256, kernel_cmdline); /* Let the kernel know we are modifying the cmdline. */ env->regs[10] = 0x87109563; env->regs[11] = high; } } env->pc = bootstrap_pc; printf ("pc =%x\n", env->pc); printf ("ram size =%ld\n", ram_size); } QEMUMachine bareetraxfs_machine = { .name = "bareetraxfs", .desc = "Bare ETRAX FS board", .init = bareetraxfs_init, };