[mirror_qemu.git] / hw / milkymist.c

/*
 *  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 "net.h"
#include "flash.h"
#include "sysemu.h"
#include "devices.h"
#include "boards.h"
#include "loader.h"
#include "elf.h"
#include "blockdev.h"
#include "milkymist-hw.h"
#include "lm32.h"

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

typedef struct {
    CPUState *env;
    target_phys_addr_t bootstrap_pc;
    target_phys_addr_t flash_base;
    target_phys_addr_t initrd_base;
    size_t initrd_size;
    target_phys_addr_t cmdline_base;
} ResetInfo;

static void cpu_irq_handler(void *opaque, int irq, int level)
{
    CPUState *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;
    CPUState *env = reset_info->env;

    cpu_reset(env);

    /* 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(ram_addr_t ram_size_not_used,
                          const char *boot_device,
                          const char *kernel_filename,
                          const char *kernel_cmdline,
                          const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    int kernel_size;
    DriveInfo *dinfo;
    ram_addr_t phys_sdram;
    qemu_irq irq[32], *cpu_irq;
    int i;
    char *bios_filename;
    ResetInfo *reset_info;

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

    target_phys_addr_t initrd_base  = sdram_base + 0x1002000;
    target_phys_addr_t 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";
    }
    env = cpu_init(cpu_model);
    reset_info->env = env;

    cpu_lm32_set_phys_msb_ignore(env, 1);

    phys_sdram = qemu_ram_alloc(NULL, "milkymist.sdram", sdram_size);
    cpu_register_physical_memory(sdram_base, sdram_size,
            phys_sdram | IO_MEM_RAM);

    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], irq[1]);
    milkymist_sysctl_create(0x60001000, irq[2], irq[3], irq[4],
            80000000, 0x10014d31, 0x0000041f, 0x00000001);
    milkymist_hpdmc_create(0x60002000);
    milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
    milkymist_memcard_create(0x60004000);
    milkymist_ac97_create(0x60005000, irq[5], irq[6], irq[7], irq[8]);
    milkymist_pfpu_create(0x60006000, irq[9]);
    milkymist_tmu2_create(0x60007000, irq[10]);
    milkymist_minimac2_create(0x60008000, 0x30000000, irq[11], irq[12]);
    milkymist_softusb_create(0x6000f000, irq[17],
            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
};

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

machine_init(milkymist_machine_init);
Commit	Line	Data
5052d227 MW	1	/*
	2	* QEMU model for the Milkymist board.
	3	*
	4	* Copyright (c) 2010 Michael Walle <michael@walle.cc>
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include "sysbus.h"
	21	#include "hw.h"
	22	#include "net.h"
	23	#include "flash.h"
	24	#include "sysemu.h"
	25	#include "devices.h"
	26	#include "boards.h"
	27	#include "loader.h"
	28	#include "elf.h"
	29	#include "blockdev.h"
	30	#include "milkymist-hw.h"
	31	#include "lm32.h"
	32
	33	#define BIOS_FILENAME "mmone-bios.bin"
	34	#define BIOS_OFFSET 0x00860000
	35	#define BIOS_SIZE (512*1024)
	36	#define KERNEL_LOAD_ADDR 0x40000000
	37
	38	typedef struct {
	39	CPUState *env;
	40	target_phys_addr_t bootstrap_pc;
	41	target_phys_addr_t flash_base;
	42	target_phys_addr_t initrd_base;
	43	size_t initrd_size;
	44	target_phys_addr_t cmdline_base;
	45	} ResetInfo;
	46
	47	static void cpu_irq_handler(void *opaque, int irq, int level)
	48	{
	49	CPUState *env = opaque;
	50
	51	if (level) {
	52	cpu_interrupt(env, CPU_INTERRUPT_HARD);
	53	} else {
	54	cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
	55	}
	56	}
	57
	58	static void main_cpu_reset(void *opaque)
	59	{
	60	ResetInfo *reset_info = opaque;
	61	CPUState *env = reset_info->env;
	62
	63	cpu_reset(env);
	64
65	/* init defaults */
66	env->pc = reset_info->bootstrap_pc;
67	env->regs[R_R1] = reset_info->cmdline_base;
68	env->regs[R_R2] = reset_info->initrd_base;
69	env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
70	env->eba = reset_info->flash_base;
71	env->deba = reset_info->flash_base;
72	}
73
74	static void
75	milkymist_init(ram_addr_t ram_size_not_used,
76	const char *boot_device,
77	const char *kernel_filename,
78	const char *kernel_cmdline,
79	const char initrd_filename, const char cpu_model)
80	{
81	CPUState *env;
82	int kernel_size;
83	DriveInfo *dinfo;
01e0451a	84	ram_addr_t phys_sdram;
5052d227 MW	85	qemu_irq irq[32], *cpu_irq;
	86	int i;
	87	char *bios_filename;
	88	ResetInfo *reset_info;
	89
	90	/* memory map */
	91	target_phys_addr_t flash_base = 0x00000000;
	92	size_t flash_sector_size = 128 * 1024;
	93	size_t flash_size = 32 * 1024 * 1024;
	94	target_phys_addr_t sdram_base = 0x40000000;
	95	size_t sdram_size = 128 * 1024 * 1024;
	96
	97	target_phys_addr_t initrd_base = sdram_base + 0x1002000;
	98	target_phys_addr_t cmdline_base = sdram_base + 0x1000000;
	99	size_t initrd_max = sdram_size - 0x1002000;
	100
7267c094	101	reset_info = g_malloc0(sizeof(ResetInfo));
5052d227 MW	102
	103	if (cpu_model == NULL) {
	104	cpu_model = "lm32-full";
	105	}
	106	env = cpu_init(cpu_model);
	107	reset_info->env = env;
	108
	109	cpu_lm32_set_phys_msb_ignore(env, 1);
	110
01e0451a AL	111	phys_sdram = qemu_ram_alloc(NULL, "milkymist.sdram", sdram_size);
	112	cpu_register_physical_memory(sdram_base, sdram_size,
	113	phys_sdram \| IO_MEM_RAM);
5052d227	114
5052d227 MW	115	dinfo = drive_get(IF_PFLASH, 0, 0);
5052d227 MW	116	/* Numonyx JS28F256J3F105 */
cfe5f011	117	pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size,
5052d227 MW	118	dinfo ? dinfo->bdrv : NULL, flash_sector_size,
5052d227 MW	119	flash_size / flash_sector_size, 2,
01e0451a	120	0x00, 0x89, 0x00, 0x1d, 1);
5052d227 MW	121
	122	/* create irq lines */
	123	cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
	124	env->pic_state = lm32_pic_init(*cpu_irq);
	125	for (i = 0; i < 32; i++) {
	126	irq[i] = qdev_get_gpio_in(env->pic_state, i);
	127	}
	128
	129	/* load bios rom */
	130	if (bios_name == NULL) {
	131	bios_name = BIOS_FILENAME;
	132	}
	133	bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
	134
	135	if (bios_filename) {
	136	load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE);
	137	}
	138
	139	reset_info->bootstrap_pc = BIOS_OFFSET;
	140
	141	/* if no kernel is given no valid bios rom is a fatal error */
	142	if (!kernel_filename && !dinfo && !bios_filename) {
	143	fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n",
	144	bios_name);
	145	exit(1);
	146	}
	147
	148	milkymist_uart_create(0x60000000, irq[0], irq[1]);
	149	milkymist_sysctl_create(0x60001000, irq[2], irq[3], irq[4],
	150	80000000, 0x10014d31, 0x0000041f, 0x00000001);
	151	milkymist_hpdmc_create(0x60002000);
	152	milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
	153	milkymist_memcard_create(0x60004000);
	154	milkymist_ac97_create(0x60005000, irq[5], irq[6], irq[7], irq[8]);
	155	milkymist_pfpu_create(0x60006000, irq[9]);
	156	milkymist_tmu2_create(0x60007000, irq[10]);
57aa265d	157	milkymist_minimac2_create(0x60008000, 0x30000000, irq[11], irq[12]);
5052d227 MW	158	milkymist_softusb_create(0x6000f000, irq[17],
	159	0x20000000, 0x1000, 0x20020000, 0x2000);
	160
	161	/* make sure juart isn't the first chardev */
	162	env->juart_state = lm32_juart_init();
	163
	164	if (kernel_filename) {
	165	uint64_t entry;
	166
	167	/* Boots a kernel elf binary. */
	168	kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
	169	1, ELF_MACHINE, 0);
	170	reset_info->bootstrap_pc = entry;
	171
	172	if (kernel_size < 0) {
	173	kernel_size = load_image_targphys(kernel_filename, sdram_base,
	174	sdram_size);
	175	reset_info->bootstrap_pc = sdram_base;
	176	}
	177
	178	if (kernel_size < 0) {
	179	fprintf(stderr, "qemu: could not load kernel '%s'\n",
	180	kernel_filename);
	181	exit(1);
	182	}
	183	}
	184
	185	if (kernel_cmdline && strlen(kernel_cmdline)) {
	186	pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
	187	kernel_cmdline);
	188	reset_info->cmdline_base = (uint32_t)cmdline_base;
	189	}
	190
	191	if (initrd_filename) {
	192	size_t initrd_size;
	193	initrd_size = load_image_targphys(initrd_filename, initrd_base,
	194	initrd_max);
	195	reset_info->initrd_base = (uint32_t)initrd_base;
	196	reset_info->initrd_size = (uint32_t)initrd_size;
	197	}
	198
	199	qemu_register_reset(main_cpu_reset, reset_info);
	200	}
	201
	202	static QEMUMachine milkymist_machine = {
	203	.name = "milkymist",
	204	.desc = "Milkymist One",
	205	.init = milkymist_init,
	206	.is_default = 0
	207	};
	208
	209	static void milkymist_machine_init(void)
	210	{
	211	qemu_register_machine(&milkymist_machine);
	212	}
	213
	214	machine_init(milkymist_machine_init);