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/* |
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* Cisco router simulation platform. |
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* Copyright (C) 2006 Christophe Fillot. All rights reserved. |
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* |
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* Remote control module. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <stdarg.h> |
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#include <unistd.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <pthread.h> |
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#include <assert.h> |
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#include "utils.h" |
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#include "cpu.h" |
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#include "vm.h" |
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#include "dynamips.h" |
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#include "memory.h" |
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#include "device.h" |
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#include "net.h" |
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#include "net_io.h" |
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#include "registry.h" |
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#include "ptask.h" |
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#include "dev_c7200.h" |
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#include "dev_c3600.h" |
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#include "dev_c2691.h" |
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#include "dev_c3725.h" |
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#include "dev_c3745.h" |
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#include "dev_c2600.h" |
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#define DEBUG_ACCESS 0 |
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#define ROMMON_SET_VAR 0x01 |
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#define ROMMON_GET_VAR 0x02 |
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#define ROMMON_CLEAR_VAR_STAT 0x03 |
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/* Remote control private data */ |
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struct remote_data { |
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vm_obj_t vm_obj; |
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struct vdevice dev; |
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/* Console buffer */ |
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char con_buffer[512]; |
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u_int con_buf_pos; |
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/* ROMMON variables buffer */ |
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char var_buffer[512]; |
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u_int var_buf_pos; |
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u_int var_status; |
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/* Position for cookie reading */ |
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u_int cookie_pos; |
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}; |
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/* |
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* dev_remote_control_access() |
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*/ |
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void *dev_remote_control_access(cpu_gen_t *cpu,struct vdevice *dev, |
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m_uint32_t offset,u_int op_size,u_int op_type, |
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m_uint64_t *data) |
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{ |
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vm_instance_t *vm = cpu->vm; |
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struct remote_data *d = dev->priv_data; |
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struct vdevice *storage_dev; |
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size_t len; |
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if (op_type == MTS_READ) |
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*data = 0; |
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#if DEBUG_ACCESS |
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if (op_type == MTS_READ) { |
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cpu_log(cpu,"REMOTE","reading reg 0x%x at pc=0x%llx\n", |
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offset,cpu_get_pc(cpu)); |
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} else { |
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cpu_log(cpu,"REMOTE","writing reg 0x%x at pc=0x%llx, data=0x%llx\n", |
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offset,cpu_get_pc(cpu),*data); |
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} |
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#endif |
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switch(offset) { |
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/* ROM Identification tag */ |
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case 0x000: |
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if (op_type == MTS_READ) |
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*data = ROM_ID; |
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break; |
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/* CPU ID */ |
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case 0x004: |
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if (op_type == MTS_READ) |
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*data = cpu->id; |
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break; |
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/* Display CPU registers */ |
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case 0x008: |
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if (op_type == MTS_WRITE) |
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cpu->reg_dump(cpu); |
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break; |
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/* Display CPU memory info */ |
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case 0x00c: |
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if (op_type == MTS_WRITE) |
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cpu->mmu_dump(cpu); |
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break; |
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/* Reserved/Unused */ |
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case 0x010: |
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break; |
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/* RAM size */ |
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case 0x014: |
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if (op_type == MTS_READ) |
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*data = vm->ram_size; |
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break; |
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/* ROM size */ |
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case 0x018: |
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if (op_type == MTS_READ) |
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*data = vm->rom_size; |
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break; |
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/* NVRAM size */ |
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case 0x01c: |
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if (op_type == MTS_READ) |
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*data = vm->nvram_size; |
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break; |
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/* IOMEM size */ |
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case 0x020: |
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if (op_type == MTS_READ) |
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*data = vm->iomem_size; |
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break; |
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/* Config Register */ |
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case 0x024: |
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if (op_type == MTS_READ) |
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*data = vm->conf_reg; |
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break; |
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/* ELF entry point */ |
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case 0x028: |
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if (op_type == MTS_READ) |
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*data = vm->ios_entry_point; |
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break; |
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/* ELF machine id */ |
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case 0x02c: |
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if (op_type == MTS_READ) |
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*data = vm->elf_machine_id; |
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break; |
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/* Restart IOS Image */ |
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case 0x030: |
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/* not implemented */ |
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break; |
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/* Stop the virtual machine */ |
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case 0x034: |
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vm->status = VM_STATUS_SHUTDOWN; |
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break; |
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/* Debugging/Log message: /!\ physical address */ |
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case 0x038: |
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if (op_type == MTS_WRITE) { |
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len = physmem_strlen(vm,*data); |
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if (len < sizeof(d->con_buffer)) { |
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physmem_copy_from_vm(vm,d->con_buffer,*data,len+1); |
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vm_log(vm,"ROM",d->con_buffer); |
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} |
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} |
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break; |
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/* Console Buffering */ |
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case 0x03c: |
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if (op_type == MTS_WRITE) { |
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if (d->con_buf_pos < (sizeof(d->con_buffer)-1)) { |
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d->con_buffer[d->con_buf_pos++] = *data & 0xFF; |
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d->con_buffer[d->con_buf_pos] = 0; |
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if (d->con_buffer[d->con_buf_pos-1] == '\n') { |
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vm_log(vm,"ROM","%s",d->con_buffer); |
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d->con_buf_pos = 0; |
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} |
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} else |
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d->con_buf_pos = 0; |
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} |
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break; |
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/* Console output */ |
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case 0x040: |
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if (op_type == MTS_WRITE) |
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vtty_put_char(vm->vtty_con,(char)*data); |
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break; |
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/* NVRAM address */ |
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case 0x044: |
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if (op_type == MTS_READ) { |
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if ((storage_dev = dev_get_by_name(vm,"nvram"))) |
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*data = storage_dev->phys_addr; |
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if ((storage_dev = dev_get_by_name(vm,"ssa"))) |
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*data = storage_dev->phys_addr; |
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if (cpu->type == CPU_TYPE_MIPS64) |
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*data += MIPS_KSEG1_BASE; |
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} |
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break; |
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/* IO memory size for Smart-Init (C3600, others ?) */ |
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case 0x048: |
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if (op_type == MTS_READ) |
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*data = vm->nm_iomem_size; |
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break; |
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/* Cookie position selector */ |
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case 0x04c: |
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if (op_type == MTS_READ) |
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*data = d->cookie_pos; |
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else |
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d->cookie_pos = *data; |
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break; |
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/* Cookie data */ |
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case 0x050: |
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if ((op_type == MTS_READ) && (d->cookie_pos < 64)) |
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*data = vm->chassis_cookie[d->cookie_pos]; |
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break; |
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/* ROMMON variable */ |
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case 0x054: |
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if (op_type == MTS_WRITE) { |
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if (d->var_buf_pos < (sizeof(d->var_buffer)-1)) { |
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d->var_buffer[d->var_buf_pos++] = *data & 0xFF; |
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d->var_buffer[d->var_buf_pos] = 0; |
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} else |
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d->var_buf_pos = 0; |
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} else { |
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if (d->var_buf_pos < (sizeof(d->var_buffer)-1)) { |
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*data = d->var_buffer[d->var_buf_pos++]; |
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} else { |
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d->var_buf_pos = 0; |
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*data = 0; |
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} |
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} |
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break; |
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/* ROMMON variable command */ |
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case 0x058: |
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if (op_type == MTS_WRITE) { |
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switch(*data & 0xFF) { |
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case ROMMON_SET_VAR: |
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d->var_status = rommon_var_add_str(&vm->rommon_vars, |
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d->var_buffer); |
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d->var_buf_pos = 0; |
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break; |
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case ROMMON_GET_VAR: |
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d->var_status = rommon_var_get(&vm->rommon_vars, |
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d->var_buffer, |
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d->var_buffer, |
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sizeof(d->var_buffer)); |
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d->var_buf_pos = 0; |
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break; |
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case ROMMON_CLEAR_VAR_STAT: |
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d->var_buf_pos = 0; |
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break; |
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default: |
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d->var_status = -1; |
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} |
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} else { |
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*data = d->var_status; |
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} |
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break; |
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} |
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return NULL; |
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} |
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/* Shutdown a remote control device */ |
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void dev_remote_control_shutdown(vm_instance_t *vm,struct remote_data *d) |
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{ |
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if (d != NULL) { |
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dev_remove(vm,&d->dev); |
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free(d); |
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} |
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} |
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/* remote control device */ |
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int dev_remote_control_init(vm_instance_t *vm,m_uint64_t paddr,m_uint32_t len) |
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{ |
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struct remote_data *d; |
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if (!(d = malloc(sizeof(*d)))) { |
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fprintf(stderr,"Remote Control: unable to create device.\n"); |
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return(-1); |
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} |
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memset(d,0,sizeof(*d)); |
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vm_object_init(&d->vm_obj); |
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d->vm_obj.name = "remote_ctrl"; |
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d->vm_obj.data = d; |
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d->vm_obj.shutdown = (vm_shutdown_t)dev_remote_control_shutdown; |
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dev_init(&d->dev); |
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d->dev.name = "remote_ctrl"; |
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d->dev.phys_addr = paddr; |
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d->dev.phys_len = len; |
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d->dev.handler = dev_remote_control_access; |
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d->dev.priv_data = d; |
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/* Map this device to the VM */ |
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vm_bind_device(vm,&d->dev); |
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vm_object_add(vm,&d->vm_obj); |
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return(0); |
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} |