hw/milkymist.c - qemu - Git at Google

 /*
  *  QEMU model for the Milkymist board.
  *
  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */

 #include "sysbus.h"
 #include "hw.h"
 #include "flash.h"
 #include "sysemu/sysemu.h"
 #include "devices.h"
 #include "boards.h"
 #include "loader.h"
 #include "elf.h"
 #include "sysemu/blockdev.h"
 #include "milkymist-hw.h"
 #include "lm32.h"
 #include "exec/address-spaces.h"

 #define BIOS_FILENAME    "mmone-bios.bin"
 #define BIOS_OFFSET      0x00860000
 #define BIOS_SIZE        (512*1024)
 #define KERNEL_LOAD_ADDR 0x40000000

 typedef struct {
     LM32CPU *cpu;
     hwaddr bootstrap_pc;
     hwaddr flash_base;
     hwaddr initrd_base;
     size_t initrd_size;
     hwaddr cmdline_base;
 } ResetInfo;

 static void cpu_irq_handler(void *opaque, int irq, int level)
 {
     CPULM32State *env = opaque;

     if (level) {
         cpu_interrupt(env, CPU_INTERRUPT_HARD);
     } else {
         cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
     }
 }

 static void main_cpu_reset(void *opaque)
 {
     ResetInfo *reset_info = opaque;
     CPULM32State *env = &reset_info->cpu->env;

     cpu_reset(CPU(reset_info->cpu));

     /* init defaults */
     env->pc = reset_info->bootstrap_pc;
     env->regs[R_R1] = reset_info->cmdline_base;
     env->regs[R_R2] = reset_info->initrd_base;
     env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
     env->eba = reset_info->flash_base;
     env->deba = reset_info->flash_base;
 }

 static void
 milkymist_init(QEMUMachineInitArgs *args)
 {
     const char *cpu_model = args->cpu_model;
     const char *kernel_filename = args->kernel_filename;
     const char *kernel_cmdline = args->kernel_cmdline;
     const char *initrd_filename = args->initrd_filename;
     LM32CPU *cpu;
     CPULM32State *env;
     int kernel_size;
     DriveInfo *dinfo;
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *phys_sdram = g_new(MemoryRegion, 1);
     qemu_irq irq[32], *cpu_irq;
     int i;
     char *bios_filename;
     ResetInfo *reset_info;

     /* memory map */
     hwaddr flash_base   = 0x00000000;
     size_t flash_sector_size        = 128 * 1024;
     size_t flash_size               = 32 * 1024 * 1024;
     hwaddr sdram_base   = 0x40000000;
     size_t sdram_size               = 128 * 1024 * 1024;

     hwaddr initrd_base  = sdram_base + 0x1002000;
     hwaddr cmdline_base = sdram_base + 0x1000000;
     size_t initrd_max = sdram_size - 0x1002000;

     reset_info = g_malloc0(sizeof(ResetInfo));

     if (cpu_model == NULL) {
         cpu_model = "lm32-full";
     }
     cpu = cpu_lm32_init(cpu_model);
     env = &cpu->env;
     reset_info->cpu = cpu;

     cpu_lm32_set_phys_msb_ignore(env, 1);

     memory_region_init_ram(phys_sdram, "milkymist.sdram", sdram_size);
     vmstate_register_ram_global(phys_sdram);
     memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram);

     dinfo = drive_get(IF_PFLASH, 0, 0);
     /* Numonyx JS28F256J3F105 */
     pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size,
                           dinfo ? dinfo->bdrv : NULL, flash_sector_size,
                           flash_size / flash_sector_size, 2,
                           0x00, 0x89, 0x00, 0x1d, 1);

     /* create irq lines */
     cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
     env->pic_state = lm32_pic_init(*cpu_irq);
     for (i = 0; i < 32; i++) {
         irq[i] = qdev_get_gpio_in(env->pic_state, i);
     }

     /* load bios rom */
     if (bios_name == NULL) {
         bios_name = BIOS_FILENAME;
     }
     bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

     if (bios_filename) {
         load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE);
     }

     reset_info->bootstrap_pc = BIOS_OFFSET;

     /* if no kernel is given no valid bios rom is a fatal error */
     if (!kernel_filename && !dinfo && !bios_filename) {
         fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n",
                 bios_name);
         exit(1);
     }

     milkymist_uart_create(0x60000000, irq[0]);
     milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3],
             80000000, 0x10014d31, 0x0000041f, 0x00000001);
     milkymist_hpdmc_create(0x60002000);
     milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
     milkymist_memcard_create(0x60004000);
     milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]);
     milkymist_pfpu_create(0x60006000, irq[8]);
     milkymist_tmu2_create(0x60007000, irq[9]);
     milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]);
     milkymist_softusb_create(0x6000f000, irq[15],
             0x20000000, 0x1000, 0x20020000, 0x2000);

     /* make sure juart isn't the first chardev */
     env->juart_state = lm32_juart_init();

     if (kernel_filename) {
         uint64_t entry;

         /* Boots a kernel elf binary.  */
         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
                                1, ELF_MACHINE, 0);
         reset_info->bootstrap_pc = entry;

         if (kernel_size < 0) {
             kernel_size = load_image_targphys(kernel_filename, sdram_base,
                                               sdram_size);
             reset_info->bootstrap_pc = sdram_base;
         }

         if (kernel_size < 0) {
             fprintf(stderr, "qemu: could not load kernel '%s'\n",
                     kernel_filename);
             exit(1);
         }
     }

     if (kernel_cmdline && strlen(kernel_cmdline)) {
         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
                 kernel_cmdline);
         reset_info->cmdline_base = (uint32_t)cmdline_base;
     }

     if (initrd_filename) {
         size_t initrd_size;
         initrd_size = load_image_targphys(initrd_filename, initrd_base,
                 initrd_max);
         reset_info->initrd_base = (uint32_t)initrd_base;
         reset_info->initrd_size = (uint32_t)initrd_size;
     }

     qemu_register_reset(main_cpu_reset, reset_info);
 }

 static QEMUMachine milkymist_machine = {
     .name = "milkymist",
     .desc = "Milkymist One",
     .init = milkymist_init,
     .is_default = 0,
     DEFAULT_MACHINE_OPTIONS,
 };

 static void milkymist_machine_init(void)
 {
     qemu_register_machine(&milkymist_machine);
 }

 machine_init(milkymist_machine_init);
	/*
	* QEMU model for the Milkymist board.
	*
	* Copyright (c) 2010 Michael Walle <michael@walle.cc>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include "sysbus.h"
	#include "hw.h"
	#include "flash.h"
	#include "sysemu/sysemu.h"
	#include "devices.h"
	#include "boards.h"
	#include "loader.h"
	#include "elf.h"
	#include "sysemu/blockdev.h"
	#include "milkymist-hw.h"
	#include "lm32.h"
	#include "exec/address-spaces.h"

	#define BIOS_FILENAME "mmone-bios.bin"
	#define BIOS_OFFSET 0x00860000
	#define BIOS_SIZE (512*1024)
	#define KERNEL_LOAD_ADDR 0x40000000

	typedef struct {
	LM32CPU *cpu;
	hwaddr bootstrap_pc;
	hwaddr flash_base;
	hwaddr initrd_base;
	size_t initrd_size;
	hwaddr cmdline_base;
	} ResetInfo;

	static void cpu_irq_handler(void *opaque, int irq, int level)
	{
	CPULM32State *env = opaque;

	if (level) {
	cpu_interrupt(env, CPU_INTERRUPT_HARD);
	} else {
	cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
	}
	}

	static void main_cpu_reset(void *opaque)
	{
	ResetInfo *reset_info = opaque;
	CPULM32State *env = &reset_info->cpu->env;

	cpu_reset(CPU(reset_info->cpu));

	/* init defaults */
	env->pc = reset_info->bootstrap_pc;
	env->regs[R_R1] = reset_info->cmdline_base;
	env->regs[R_R2] = reset_info->initrd_base;
	env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
	env->eba = reset_info->flash_base;
	env->deba = reset_info->flash_base;
	}

	static void
	milkymist_init(QEMUMachineInitArgs *args)
	{
	const char *cpu_model = args->cpu_model;
	const char *kernel_filename = args->kernel_filename;
	const char *kernel_cmdline = args->kernel_cmdline;
	const char *initrd_filename = args->initrd_filename;
	LM32CPU *cpu;
	CPULM32State *env;
	int kernel_size;
	DriveInfo *dinfo;
	MemoryRegion *address_space_mem = get_system_memory();
	MemoryRegion *phys_sdram = g_new(MemoryRegion, 1);
	qemu_irq irq[32], *cpu_irq;
	int i;
	char *bios_filename;
	ResetInfo *reset_info;

	/* memory map */
	hwaddr flash_base = 0x00000000;
	size_t flash_sector_size = 128 * 1024;
	size_t flash_size = 32 * 1024 * 1024;
	hwaddr sdram_base = 0x40000000;
	size_t sdram_size = 128 * 1024 * 1024;

	hwaddr initrd_base = sdram_base + 0x1002000;
	hwaddr cmdline_base = sdram_base + 0x1000000;
	size_t initrd_max = sdram_size - 0x1002000;

	reset_info = g_malloc0(sizeof(ResetInfo));

	if (cpu_model == NULL) {
	cpu_model = "lm32-full";
	}
	cpu = cpu_lm32_init(cpu_model);
	env = &cpu->env;
	reset_info->cpu = cpu;

	cpu_lm32_set_phys_msb_ignore(env, 1);

	memory_region_init_ram(phys_sdram, "milkymist.sdram", sdram_size);
	vmstate_register_ram_global(phys_sdram);
	memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram);

	dinfo = drive_get(IF_PFLASH, 0, 0);
	/* Numonyx JS28F256J3F105 */
	pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size,
	dinfo ? dinfo->bdrv : NULL, flash_sector_size,
	flash_size / flash_sector_size, 2,
	0x00, 0x89, 0x00, 0x1d, 1);

	/* create irq lines */
	cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
	env->pic_state = lm32_pic_init(*cpu_irq);
	for (i = 0; i < 32; i++) {
	irq[i] = qdev_get_gpio_in(env->pic_state, i);
	}

	/* load bios rom */
	if (bios_name == NULL) {
	bios_name = BIOS_FILENAME;
	}
	bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

	if (bios_filename) {
	load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE);
	}

	reset_info->bootstrap_pc = BIOS_OFFSET;

	/* if no kernel is given no valid bios rom is a fatal error */
	if (!kernel_filename && !dinfo && !bios_filename) {
	fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n",
	bios_name);
	exit(1);
	}

	milkymist_uart_create(0x60000000, irq[0]);
	milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3],
	80000000, 0x10014d31, 0x0000041f, 0x00000001);
	milkymist_hpdmc_create(0x60002000);
	milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
	milkymist_memcard_create(0x60004000);
	milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]);
	milkymist_pfpu_create(0x60006000, irq[8]);
	milkymist_tmu2_create(0x60007000, irq[9]);
	milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]);
	milkymist_softusb_create(0x6000f000, irq[15],
	0x20000000, 0x1000, 0x20020000, 0x2000);

	/* make sure juart isn't the first chardev */
	env->juart_state = lm32_juart_init();

	if (kernel_filename) {
	uint64_t entry;

	/* Boots a kernel elf binary. */
	kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
	1, ELF_MACHINE, 0);
	reset_info->bootstrap_pc = entry;

	if (kernel_size < 0) {
	kernel_size = load_image_targphys(kernel_filename, sdram_base,
	sdram_size);
	reset_info->bootstrap_pc = sdram_base;
	}

	if (kernel_size < 0) {
	fprintf(stderr, "qemu: could not load kernel '%s'\n",
	kernel_filename);
	exit(1);
	}
	}

	if (kernel_cmdline && strlen(kernel_cmdline)) {
	pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
	kernel_cmdline);
	reset_info->cmdline_base = (uint32_t)cmdline_base;
	}

	if (initrd_filename) {
	size_t initrd_size;
	initrd_size = load_image_targphys(initrd_filename, initrd_base,
	initrd_max);
	reset_info->initrd_base = (uint32_t)initrd_base;
	reset_info->initrd_size = (uint32_t)initrd_size;
	}

	qemu_register_reset(main_cpu_reset, reset_info);
	}

	static QEMUMachine milkymist_machine = {
	.name = "milkymist",
	.desc = "Milkymist One",
	.init = milkymist_init,
	.is_default = 0,
	DEFAULT_MACHINE_OPTIONS,
	};

	static void milkymist_machine_init(void)
	{
	qemu_register_machine(&milkymist_machine);
	}

	machine_init(milkymist_machine_init);