root / hw / etraxfs.c @ 4b816985
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/*
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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 "etraxfs.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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CPUState *env; |
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qemu_irq *irq, *nmi; |
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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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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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i = drive_get_index(IF_PFLASH, 0, 0); |
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pflash_cfi02_register(0x0, phys_flash,
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i != -1 ? drives_table[i].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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irq = etraxfs_pic_init(env, 0x3001c000);
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nmi = irq + 30;
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etraxfs_dmac = etraxfs_dmac_init(env, 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], env, irq + 25, 0x30034000, 1); |
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if (nb_nics > 1) |
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eth[1] = etraxfs_eth_init(&nd_table[1], env, |
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irq + 26, 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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etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000); |
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etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000); |
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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);
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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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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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}; |