Annotation of qemu/hw/etraxfs.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU ETRAX System Emulator
        !             3:  *
        !             4:  * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
        !             5:  *
        !             6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
        !             7:  * of this software and associated documentation files (the "Software"), to deal
        !             8:  * in the Software without restriction, including without limitation the rights
        !             9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
        !            10:  * copies of the Software, and to permit persons to whom the Software is
        !            11:  * furnished to do so, subject to the following conditions:
        !            12:  *
        !            13:  * The above copyright notice and this permission notice shall be included in
        !            14:  * all copies or substantial portions of the Software.
        !            15:  *
        !            16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        !            17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
        !            19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        !            20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
        !            21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
        !            22:  * THE SOFTWARE.
        !            23:  */
        !            24: #include <time.h>
        !            25: #include <sys/time.h>
        !            26: #include "hw.h"
        !            27: #include "sysemu.h"
        !            28: #include "boards.h"
        !            29: 
        !            30: extern FILE *logfile;
        !            31: 
        !            32: static void main_cpu_reset(void *opaque)
        !            33: {
        !            34:     CPUState *env = opaque;
        !            35:     cpu_reset(env);
        !            36: }
        !            37: 
        !            38: static uint32_t fs_mmio_readb (void *opaque, target_phys_addr_t addr)
        !            39: {
        !            40:        CPUState *env = opaque;
        !            41:        uint32_t r = 0;
        !            42:        printf ("%s %x pc=%x\n", __func__, addr, env->pc);
        !            43:        return r;
        !            44: }
        !            45: static uint32_t fs_mmio_readw (void *opaque, target_phys_addr_t addr)
        !            46: {
        !            47:        CPUState *env = opaque;
        !            48:        uint32_t r = 0;
        !            49:        printf ("%s %x pc=%x\n", __func__, addr, env->pc);
        !            50:        return r;
        !            51: }
        !            52: 
        !            53: static uint32_t fs_mmio_readl (void *opaque, target_phys_addr_t addr)
        !            54: {
        !            55:        CPUState *env = opaque;
        !            56:        uint32_t r = 0;
        !            57:        printf ("%s %x p=%x\n", __func__, addr, env->pc);
        !            58:        return r;
        !            59: }
        !            60: 
        !            61: static void
        !            62: fs_mmio_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
        !            63: {
        !            64:        CPUState *env = opaque;
        !            65:        printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
        !            66: }
        !            67: static void
        !            68: fs_mmio_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
        !            69: {
        !            70:        CPUState *env = opaque;
        !            71:        printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
        !            72: }
        !            73: static void
        !            74: fs_mmio_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
        !            75: {
        !            76:        CPUState *env = opaque;
        !            77:        printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
        !            78: }
        !            79: 
        !            80: static CPUReadMemoryFunc *fs_mmio_read[] = {
        !            81:     &fs_mmio_readb,
        !            82:     &fs_mmio_readw,
        !            83:     &fs_mmio_readl,
        !            84: };
        !            85: 
        !            86: static CPUWriteMemoryFunc *fs_mmio_write[] = {
        !            87:     &fs_mmio_writeb,
        !            88:     &fs_mmio_writew,
        !            89:     &fs_mmio_writel,
        !            90: };
        !            91: 
        !            92: 
        !            93: /* Init functions for different blocks.  */
        !            94: extern void etraxfs_timer_init(CPUState *env, qemu_irq *irqs);
        !            95: extern void etraxfs_ser_init(CPUState *env, qemu_irq *irqs);
        !            96: 
        !            97: void etrax_ack_irq(CPUState *env, uint32_t mask)
        !            98: {
        !            99:        env->pending_interrupts &= ~mask;
        !           100: }
        !           101: 
        !           102: static void dummy_cpu_set_irq(void *opaque, int irq, int level)
        !           103: {
        !           104:        CPUState *env = opaque;
        !           105: 
        !           106:        /* Hmm, should this really be done here?  */
        !           107:        env->pending_interrupts |= 1 << irq;
        !           108:        cpu_interrupt(env, CPU_INTERRUPT_HARD);
        !           109: }
        !           110: 
        !           111: static
        !           112: void bareetraxfs_init (int ram_size, int vga_ram_size,
        !           113:                        const char *boot_device, DisplayState *ds,
        !           114:                        const char *kernel_filename, const char *kernel_cmdline,
        !           115:                        const char *initrd_filename, const char *cpu_model)
        !           116: {
        !           117:     CPUState *env;
        !           118:     qemu_irq *irqs;
        !           119:     int kernel_size;
        !           120:     int internal_regs;
        !           121: 
        !           122:     /* init CPUs */
        !           123:     if (cpu_model == NULL) {
        !           124:         cpu_model = "crisv32";
        !           125:     }
        !           126:     env = cpu_init(cpu_model);
        !           127: /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
        !           128:     qemu_register_reset(main_cpu_reset, env);
        !           129:     irqs = qemu_allocate_irqs(dummy_cpu_set_irq, env, 32);
        !           130: 
        !           131:     internal_regs = cpu_register_io_memory(0,
        !           132:                                           fs_mmio_read, fs_mmio_write, env);
        !           133:     /* 0xb0050000 is the last reg.  */
        !           134:     cpu_register_physical_memory (0xac000000, 0x4010000, internal_regs);
        !           135:     /* allocate RAM */
        !           136:     cpu_register_physical_memory(0x40000000, ram_size, IO_MEM_RAM);
        !           137: 
        !           138:     etraxfs_timer_init(env, irqs);
        !           139:     etraxfs_ser_init(env, irqs);
        !           140: 
        !           141:     kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
        !           142:     /* magic for boot.  */
        !           143:     env->regs[8] = 0x56902387;
        !           144:     env->regs[9] = 0x40004000 + kernel_size;
        !           145:     env->pc = 0x40004000;
        !           146: 
        !           147:     {
        !           148:        unsigned char *ptr = phys_ram_base + 0x4000;
        !           149:        int i;
        !           150:        for (i = 0; i < 8; i++)
        !           151:        {
        !           152:                printf ("%2.2x ", ptr[i]);
        !           153:        }
        !           154:        printf("\n");
        !           155:     }
        !           156: 
        !           157:     printf ("pc =%x\n", env->pc);
        !           158:     printf ("ram size =%d\n", ram_size);
        !           159:     printf ("kernel name =%s\n", kernel_filename);
        !           160:     printf ("kernel size =%d\n", kernel_size);
        !           161:     printf ("cpu haltd =%d\n", env->halted);
        !           162: }
        !           163: 
        !           164: void DMA_run(void)
        !           165: {
        !           166: }
        !           167: 
        !           168: void pic_info()
        !           169: {
        !           170: }
        !           171: 
        !           172: void irq_info()
        !           173: {
        !           174: }
        !           175: 
        !           176: QEMUMachine bareetraxfs_machine = {
        !           177:     "bareetraxfs",
        !           178:     "Bare ETRAX FS board",
        !           179:     bareetraxfs_init,
        !           180: };

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