hw/arm-misc.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 /* The CPU is also modelled as an interrupt controller.  */
  18 #define ARM_PIC_CPU_IRQ 0
  19 #define ARM_PIC_CPU_FIQ 1
  20 qemu_irq *arm_pic_init_cpu(ARMCPU *cpu);
  21
  22 /* armv7m.c */
  23 qemu_irq *armv7m_init(MemoryRegion *address_space_mem,
  24                       int flash_size, int sram_size,
  25                       const char *kernel_filename, const char *cpu_model);
  26
  27 /* arm_boot.c */
  28 struct arm_boot_info {
  29     uint64_t ram_size;
  30     const char *kernel_filename;
  31     const char *kernel_cmdline;
  32     const char *initrd_filename;
  33     const char *dtb_filename;
  34     hwaddr loader_start;
  35     /* multicore boards that use the default secondary core boot functions
  36      * need to put the address of the secondary boot code, the boot reg,
  37      * and the GIC address in the next 3 values, respectively. boards that
  38      * have their own boot functions can use these values as they want.
  39      */
  40     hwaddr smp_loader_start;
  41     hwaddr smp_bootreg_addr;
  42     hwaddr gic_cpu_if_addr;
  43     int nb_cpus;
  44     int board_id;
  45     int (*atag_board)(const struct arm_boot_info *info, void *p);
  46     /* multicore boards that use the default secondary core boot functions
  47      * can ignore these two function calls. If the default functions won't
  48      * work, then write_secondary_boot() should write a suitable blob of
  49      * code mimicking the secondary CPU startup process used by the board's
  50      * boot loader/boot ROM code, and secondary_cpu_reset_hook() should
  51      * perform any necessary CPU reset handling and set the PC for the
  52      * secondary CPUs to point at this boot blob.
  53      */
  54     void (*write_secondary_boot)(ARMCPU *cpu,
  55                                  const struct arm_boot_info *info);
  56     void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
  57                                      const struct arm_boot_info *info);
  58     /* Used internally by arm_boot.c */
  59     int is_linux;
  60     hwaddr initrd_start;
  61     hwaddr initrd_size;
  62     hwaddr entry;
  63 };
  64 void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info);
  65
  66 /* Multiplication factor to convert from system clock ticks to qemu timer
  67    ticks.  */
  68 extern int system_clock_scale;
  69
  70 #endif /* !ARM_MISC_H */