129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
/*
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* Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
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* boards.
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*
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* Copyright (c) 2009 Edgar E. Iglesias.
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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 "hw/sysbus.h"
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#include "hw/hw.h"
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#include "net/net.h"
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#include "hw/block/flash.h"
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#include "sysemu/sysemu.h"
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#include "hw/devices.h"
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#include "hw/boards.h"
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#include "hw/xilinx.h"
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#include "sysemu/blockdev.h"
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#include "exec/address-spaces.h"
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#include "boot.h"
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#include "pic_cpu.h"
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#define LMB_BRAM_SIZE (128 * 1024)
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#define FLASH_SIZE (16 * 1024 * 1024)
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#define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
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#define MEMORY_BASEADDR 0x90000000
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#define FLASH_BASEADDR 0xa0000000
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#define INTC_BASEADDR 0x81800000
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#define TIMER_BASEADDR 0x83c00000
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#define UARTLITE_BASEADDR 0x84000000
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#define ETHLITE_BASEADDR 0x81000000
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static void machine_cpu_reset(MicroBlazeCPU *cpu)
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{
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CPUMBState *env = &cpu->env;
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env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
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}
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static void
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petalogix_s3adsp1800_init(QEMUMachineInitArgs *args)
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{
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ram_addr_t ram_size = args->ram_size;
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const char *cpu_model = args->cpu_model;
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DeviceState *dev;
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MicroBlazeCPU *cpu;
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CPUMBState *env;
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DriveInfo *dinfo;
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int i;
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hwaddr ddr_base = MEMORY_BASEADDR;
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MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
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MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
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qemu_irq irq[32], *cpu_irq;
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MemoryRegion *sysmem = get_system_memory();
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/* init CPUs */
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if (cpu_model == NULL) {
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cpu_model = "microblaze";
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}
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cpu = cpu_mb_init(cpu_model);
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env = &cpu->env;
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/* Attach emulated BRAM through the LMB. */
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memory_region_init_ram(phys_lmb_bram, NULL,
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"petalogix_s3adsp1800.lmb_bram", LMB_BRAM_SIZE);
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vmstate_register_ram_global(phys_lmb_bram);
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memory_region_add_subregion(sysmem, 0x00000000, phys_lmb_bram);
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memory_region_init_ram(phys_ram, NULL, "petalogix_s3adsp1800.ram", ram_size);
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vmstate_register_ram_global(phys_ram);
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memory_region_add_subregion(sysmem, ddr_base, phys_ram);
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dinfo = drive_get(IF_PFLASH, 0, 0);
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pflash_cfi01_register(FLASH_BASEADDR,
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NULL, "petalogix_s3adsp1800.flash", FLASH_SIZE,
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dinfo ? dinfo->bdrv : NULL, (64 * 1024),
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FLASH_SIZE >> 16,
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1, 0x89, 0x18, 0x0000, 0x0, 1);
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cpu_irq = microblaze_pic_init_cpu(env);
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dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 0xA);
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for (i = 0; i < 32; i++) {
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irq[i] = qdev_get_gpio_in(dev, i);
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}
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sysbus_create_simple("xlnx.xps-uartlite", UARTLITE_BASEADDR, irq[3]);
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/* 2 timers at irq 2 @ 62 Mhz. */
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xilinx_timer_create(TIMER_BASEADDR, irq[0], 0, 62 * 1000000);
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xilinx_ethlite_create(&nd_table[0], ETHLITE_BASEADDR, irq[1], 0, 0);
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microblaze_load_kernel(cpu, ddr_base, ram_size,
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args->initrd_filename,
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BINARY_DEVICE_TREE_FILE,
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machine_cpu_reset);
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}
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static QEMUMachine petalogix_s3adsp1800_machine = {
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.name = "petalogix-s3adsp1800",
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.desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800",
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.init = petalogix_s3adsp1800_init,
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.is_default = 1,
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};
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static void petalogix_s3adsp1800_machine_init(void)
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{
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qemu_register_machine(&petalogix_s3adsp1800_machine);
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}
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machine_init(petalogix_s3adsp1800_machine_init);
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