4 * Copyright (c) 2006 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the LGPL.
14 #include "exec/memory.h"
15 #include "target/arm/cpu-qom.h"
16 #include "qemu/notify.h"
19 ARM_ENDIANNESS_UNKNOWN = 0,
28 * @kernel_filename: file to load
29 * @mem_size: mem_size: maximum image size to load
31 * Load the guest image for an ARMv7M system. This must be called by
32 * any ARMv7M board. (This is necessary to ensure that the CPU resets
33 * correctly on system reset, as well as for kernel loading.)
35 void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename, int mem_size);
38 struct arm_boot_info {
40 const char *kernel_filename;
41 const char *kernel_cmdline;
42 const char *initrd_filename;
43 const char *dtb_filename;
47 /* If set to True, arm_load_kernel() will not load DTB.
48 * It allows board to load DTB manually later.
51 bool skip_dtb_autoload;
52 /* multicore boards that use the default secondary core boot functions
53 * need to put the address of the secondary boot code, the boot reg,
54 * and the GIC address in the next 3 values, respectively. boards that
55 * have their own boot functions can use these values as they want.
57 hwaddr smp_loader_start;
58 hwaddr smp_bootreg_addr;
59 hwaddr gic_cpu_if_addr;
62 /* ARM machines that support the ARM Security Extensions use this field to
63 * control whether Linux is booted as secure(true) or non-secure(false).
66 int (*atag_board)(const struct arm_boot_info *info, void *p);
67 /* multicore boards that use the default secondary core boot functions
68 * can ignore these two function calls. If the default functions won't
69 * work, then write_secondary_boot() should write a suitable blob of
70 * code mimicking the secondary CPU startup process used by the board's
71 * boot loader/boot ROM code, and secondary_cpu_reset_hook() should
72 * perform any necessary CPU reset handling and set the PC for the
73 * secondary CPUs to point at this boot blob.
75 void (*write_secondary_boot)(ARMCPU *cpu,
76 const struct arm_boot_info *info);
77 void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
78 const struct arm_boot_info *info);
79 /* if a board is able to create a dtb without a dtb file then it
80 * sets get_dtb. This will only be used if no dtb file is provided
81 * by the user. On success, sets *size to the length of the created
82 * dtb, and returns a pointer to it. (The caller must free this memory
83 * with g_free() when it has finished with it.) On failure, returns NULL.
85 void *(*get_dtb)(const struct arm_boot_info *info, int *size);
86 /* if a board needs to be able to modify a device tree provided by
87 * the user it should implement this hook.
89 void (*modify_dtb)(const struct arm_boot_info *info, void *fdt);
90 /* Used internally by arm_boot.c */
96 /* Boot firmware has been loaded, typically at address 0, with -bios or
97 * -pflash. It also implies that fw_cfg_find() will succeed.
101 /* Address at which board specific loader/setup code exists. If enabled,
102 * this code-blob will run before anything else. It must return to the
103 * caller via the link register. There is no stack set up. Enabled by
104 * defining write_board_setup, which is responsible for loading the blob
105 * to the specified address.
107 hwaddr board_setup_addr;
108 void (*write_board_setup)(ARMCPU *cpu,
109 const struct arm_boot_info *info);
111 /* If set, the board specific loader/setup blob will be run from secure
112 * mode, regardless of secure_boot. The blob becomes responsible for
113 * changing to non-secure state if implementing a non-secure boot
115 bool secure_board_setup;
117 arm_endianness endianness;
121 * arm_load_kernel - Loads memory with everything needed to boot
123 * @cpu: handle to the first CPU object
124 * @info: handle to the boot info struct
125 * Registers a machine init done notifier that copies to memory
126 * everything needed to boot, depending on machine and user options:
127 * kernel image, boot loaders, initrd, dtb. Also registers the CPU
130 * In case the machine file supports the platform bus device and its
131 * dynamically instantiable sysbus devices, this function must be called
132 * before sysbus-fdt arm_register_platform_bus_fdt_creator. Indeed the
133 * machine init done notifiers are called in registration reverse order.
135 void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info);
137 AddressSpace *arm_boot_address_space(ARMCPU *cpu,
138 const struct arm_boot_info *info);
141 * arm_load_dtb() - load a device tree binary image into memory
142 * @addr: the address to load the image at
143 * @binfo: struct describing the boot environment
144 * @addr_limit: upper limit of the available memory area at @addr
145 * @as: address space to load image to
147 * Load a device tree supplied by the machine or by the user with the
148 * '-dtb' command line option, and put it at offset @addr in target
151 * If @addr_limit contains a meaningful value (i.e., it is strictly greater
152 * than @addr), the device tree is only loaded if its size does not exceed
155 * Returns: the size of the device tree image on success,
156 * 0 if the image size exceeds the limit,
159 * Note: Must not be called unless have_dtb(binfo) is true.
161 int arm_load_dtb(hwaddr addr, const struct arm_boot_info *binfo,
162 hwaddr addr_limit, AddressSpace *as);
164 /* Write a secure board setup routine with a dummy handler for SMCs */
165 void arm_write_secure_board_setup_dummy_smc(ARMCPU *cpu,
166 const struct arm_boot_info *info,
169 #endif /* HW_ARM_BOOT_H */