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/*
* Misc ARM declarations
*
* Copyright (c) 2006 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the LGPL.
*
*/
#ifndef HW_ARM_H
#define HW_ARM_H
#include "exec/memory.h"
#include "target-arm/cpu-qom.h"
#include "hw/irq.h"
#include "qemu/notify.h"
typedef enum {
ARM_ENDIANNESS_UNKNOWN = 0,
ARM_ENDIANNESS_LE,
ARM_ENDIANNESS_BE8,
ARM_ENDIANNESS_BE32,
} arm_endianness;
/* armv7m.c */
DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq,
const char *kernel_filename, const char *cpu_model);
/*
* struct used as a parameter of the arm_load_kernel machine init
* done notifier
*/
typedef struct {
Notifier notifier; /* actual notifier */
ARMCPU *cpu; /* handle to the first cpu object */
} ArmLoadKernelNotifier;
/* arm_boot.c */
struct arm_boot_info {
uint64_t ram_size;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
const char *dtb_filename;
hwaddr loader_start;
/* multicore boards that use the default secondary core boot functions
* need to put the address of the secondary boot code, the boot reg,
* and the GIC address in the next 3 values, respectively. boards that
* have their own boot functions can use these values as they want.
*/
hwaddr smp_loader_start;
hwaddr smp_bootreg_addr;
hwaddr gic_cpu_if_addr;
int nb_cpus;
int board_id;
/* ARM machines that support the ARM Security Extensions use this field to
* control whether Linux is booted as secure(true) or non-secure(false).
*/
bool secure_boot;
int (*atag_board)(const struct arm_boot_info *info, void *p);
/* multicore boards that use the default secondary core boot functions
* can ignore these two function calls. If the default functions won't
* work, then write_secondary_boot() should write a suitable blob of
* code mimicking the secondary CPU startup process used by the board's
* boot loader/boot ROM code, and secondary_cpu_reset_hook() should
* perform any necessary CPU reset handling and set the PC for the
* secondary CPUs to point at this boot blob.
*/
void (*write_secondary_boot)(ARMCPU *cpu,
const struct arm_boot_info *info);
void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
const struct arm_boot_info *info);
/* if a board is able to create a dtb without a dtb file then it
* sets get_dtb. This will only be used if no dtb file is provided
* by the user. On success, sets *size to the length of the created
* dtb, and returns a pointer to it. (The caller must free this memory
* with g_free() when it has finished with it.) On failure, returns NULL.
*/
void *(*get_dtb)(const struct arm_boot_info *info, int *size);
/* if a board needs to be able to modify a device tree provided by
* the user it should implement this hook.
*/
void (*modify_dtb)(const struct arm_boot_info *info, void *fdt);
/* machine init done notifier executing arm_load_dtb */
ArmLoadKernelNotifier load_kernel_notifier;
/* Used internally by arm_boot.c */
int is_linux;
hwaddr initrd_start;
hwaddr initrd_size;
hwaddr entry;
/* Boot firmware has been loaded, typically at address 0, with -bios or
* -pflash. It also implies that fw_cfg_find() will succeed.
*/
bool firmware_loaded;
/* Address at which board specific loader/setup code exists. If enabled,
* this code-blob will run before anything else. It must return to the
* caller via the link register. There is no stack set up. Enabled by
* defining write_board_setup, which is responsible for loading the blob
* to the specified address.
*/
hwaddr board_setup_addr;
void (*write_board_setup)(ARMCPU *cpu,
const struct arm_boot_info *info);
/* If set, the board specific loader/setup blob will be run from secure
* mode, regardless of secure_boot. The blob becomes responsible for
* changing to non-secure state if implementing a non-secure boot
*/
bool secure_board_setup;
arm_endianness endianness;
};
/**
* arm_load_kernel - Loads memory with everything needed to boot
*
* @cpu: handle to the first CPU object
* @info: handle to the boot info struct
* Registers a machine init done notifier that copies to memory
* everything needed to boot, depending on machine and user options:
* kernel image, boot loaders, initrd, dtb. Also registers the CPU
* reset handler.
*
* In case the machine file supports the platform bus device and its
* dynamically instantiable sysbus devices, this function must be called
* before sysbus-fdt arm_register_platform_bus_fdt_creator. Indeed the
* machine init done notifiers are called in registration reverse order.
*/
void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info);
/* Write a secure board setup routine with a dummy handler for SMCs */
void arm_write_secure_board_setup_dummy_smc(ARMCPU *cpu,
const struct arm_boot_info *info,
hwaddr mvbar_addr);
/* Multiplication factor to convert from system clock ticks to qemu timer
ticks. */
extern int system_clock_scale;
#endif /* HW_ARM_H */
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