Annotation of qemu/hw/etraxfs.c, revision 1.1.1.1

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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