LXR qemu/include/hw/arm/arm.h

   1/*
   2 * Misc ARM declarations
   3 *
   4 * Copyright (c) 2006 CodeSourcery.
   5 * Written by Paul Brook
   6 *
   7 * This code is licensed under the LGPL.
   8 *
   9 */
  10
  11#ifndef ARM_MISC_H
  12#define ARM_MISC_H 1
  13
  14#include "exec/memory.h"
  15#include "hw/irq.h"
  16
  17/* armv7m.c */
  18qemu_irq *armv7m_init(MemoryRegion *system_memory,
  19                      int flash_size, int sram_size,
  20                      const char *kernel_filename, const char *cpu_model);
  21
  22/* arm_boot.c */
  23struct arm_boot_info {
  24    uint64_t ram_size;
  25    const char *kernel_filename;
  26    const char *kernel_cmdline;
  27    const char *initrd_filename;
  28    const char *dtb_filename;
  29    hwaddr loader_start;
  30    /* multicore boards that use the default secondary core boot functions
  31     * need to put the address of the secondary boot code, the boot reg,
  32     * and the GIC address in the next 3 values, respectively. boards that
  33     * have their own boot functions can use these values as they want.
  34     */
  35    hwaddr smp_loader_start;
  36    hwaddr smp_bootreg_addr;
  37    hwaddr gic_cpu_if_addr;
  38    int nb_cpus;
  39    int board_id;
  40    int (*atag_board)(const struct arm_boot_info *info, void *p);
  41    /* multicore boards that use the default secondary core boot functions
  42     * can ignore these two function calls. If the default functions won't
  43     * work, then write_secondary_boot() should write a suitable blob of
  44     * code mimicking the secondary CPU startup process used by the board's
  45     * boot loader/boot ROM code, and secondary_cpu_reset_hook() should
  46     * perform any necessary CPU reset handling and set the PC for the
  47     * secondary CPUs to point at this boot blob.
  48     */
  49    void (*write_secondary_boot)(ARMCPU *cpu,
  50                                 const struct arm_boot_info *info);
  51    void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
  52                                     const struct arm_boot_info *info);
  53    /* if a board is able to create a dtb without a dtb file then it
  54     * sets get_dtb. This will only be used if no dtb file is provided
  55     * by the user. On success, sets *size to the length of the created
  56     * dtb, and returns a pointer to it. (The caller must free this memory
  57     * with g_free() when it has finished with it.) On failure, returns NULL.
  58     */
  59    void *(*get_dtb)(const struct arm_boot_info *info, int *size);
  60    /* if a board needs to be able to modify a device tree provided by
  61     * the user it should implement this hook.
  62     */
  63    void (*modify_dtb)(const struct arm_boot_info *info, void *fdt);
  64    /* Used internally by arm_boot.c */
  65    int is_linux;
  66    hwaddr initrd_start;
  67    hwaddr initrd_size;
  68    hwaddr entry;
  69};
  70void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info);
  71
  72/* Multiplication factor to convert from system clock ticks to qemu timer
  73   ticks.  */
  74extern int system_clock_scale;
  75
  76#endif /* !ARM_MISC_H */
  77