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 "memory.h"
  15
  16 /* The CPU is also modeled as an interrupt controller.  */
  17 #define ARM_PIC_CPU_IRQ 0
  18 #define ARM_PIC_CPU_FIQ 1
  19 qemu_irq *arm_pic_init_cpu(ARMCPU *cpu);
  20
  21 /* armv7m.c */
  22 qemu_irq *armv7m_init(MemoryRegion *address_space_mem,
  23                       int flash_size, int sram_size,
  24                       const char *kernel_filename, const char *cpu_model);
  25
  26 /* arm_boot.c */
  27 struct arm_boot_info {
  28     int ram_size;
  29     const char *kernel_filename;
  30     const char *kernel_cmdline;
  31     const char *initrd_filename;
  32     const char *dtb_filename;
  33     target_phys_addr_t loader_start;
  34     /* multicore boards that use the default secondary core boot functions
  35      * need to put the address of the secondary boot code, the boot reg,
  36      * and the GIC address in the next 3 values, respectively. boards that
  37      * have their own boot functions can use these values as they want.
  38      */
  39     target_phys_addr_t smp_loader_start;
  40     target_phys_addr_t smp_bootreg_addr;
  41     target_phys_addr_t gic_cpu_if_addr;
  42     int nb_cpus;
  43     int board_id;
  44     int (*atag_board)(const struct arm_boot_info *info, void *p);
  45     /* multicore boards that use the default secondary core boot functions
  46      * can ignore these two function calls. If the default functions won't
  47      * work, then write_secondary_boot() should write a suitable blob of
  48      * code mimicing the secondary CPU startup process used by the board's
  49      * boot loader/boot ROM code, and secondary_cpu_reset_hook() should
  50      * perform any necessary CPU reset handling and set the PC for thei
  51      * secondary CPUs to point at this boot blob.
  52      */
  53     void (*write_secondary_boot)(ARMCPU *cpu,
  54                                  const struct arm_boot_info *info);
  55     void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
  56                                      const struct arm_boot_info *info);
  57     /* Used internally by arm_boot.c */
  58     int is_linux;
  59     target_phys_addr_t initrd_size;
  60     target_phys_addr_t entry;
  61 };
  62 void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info);
  63
  64 /* Multiplication factor to convert from system clock ticks to qemu timer
  65    ticks.  */
  66 extern int system_clock_scale;
  67
  68 #endif /* !ARM_MISC_H */