130 lines
4.8 KiB
C
130 lines
4.8 KiB
C
/*
|
|
* Misc ARM declarations
|
|
*
|
|
* Copyright (c) 2006 CodeSourcery.
|
|
* Written by Paul Brook
|
|
*
|
|
* This code is licensed under the LGPL.
|
|
*
|
|
*/
|
|
|
|
#ifndef ARM_MISC_H
|
|
#define ARM_MISC_H 1
|
|
|
|
#include "exec/memory.h"
|
|
#include "hw/irq.h"
|
|
#include "qemu/notify.h"
|
|
#include "cpu.h"
|
|
|
|
/* 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_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);
|
|
|
|
/* Multiplication factor to convert from system clock ticks to qemu timer
|
|
ticks. */
|
|
extern int system_clock_scale;
|
|
|
|
#endif /* !ARM_MISC_H */
|