blob: fc8abd9d4acc84d9969c1cc7dde1f47ce8280778 [file] [log] [blame]
// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SRC_FIRMWARE_GIGABOOT_SRC_OSBOOT_H_
#define SRC_FIRMWARE_GIGABOOT_SRC_OSBOOT_H_
#include <stdbool.h>
#include <stdint.h>
#include <zircon/compiler.h>
#include <efi/protocol/graphics-output.h>
#include <efi/system-table.h>
__BEGIN_CDECLS
#define PAGE_SIZE (4096)
#define PAGE_MASK (PAGE_SIZE - 1)
#define BYTES_TO_PAGES(n) (((n) + PAGE_MASK) / PAGE_SIZE)
#define CMDLINE_MAX PAGE_SIZE
// Space for extra ZBI items.
#define EXTRA_ZBI_ITEM_SPACE (8 * PAGE_SIZE)
uint64_t find_acpi_root(efi_handle img, efi_system_table* sys);
uint64_t find_smbios(efi_handle img, efi_system_table* sys);
uint32_t get_zx_pixel_format(efi_graphics_output_protocol* gop);
int boot_deprecated(efi_handle img, efi_system_table* sys, void* image, size_t sz, void* ramdisk,
size_t rsz, void* cmdline, size_t csz);
int zbi_boot(efi_handle img, efi_system_table* sys, void* image, size_t sz);
bool image_is_valid(void* image, size_t sz);
// sz may be just one block or sector
// if the header looks like a kernel image, return expected size
// otherwise returns 0
size_t image_getsize(void* imageheader, size_t sz);
// Where to start the kernel from
extern size_t kernel_zone_size;
extern efi_physical_addr kernel_zone_base;
// Selection for how to boot the device.
typedef enum {
kBootActionDefault,
kBootActionFastboot,
kBootActionNetboot,
kBootActionSlotA,
kBootActionSlotB,
kBootActionSlotR
} BootAction;
// Determines what boot action to take.
//
// Priority order goes:
// 1. use the bootbyte if set (e.g. via `dm reboot-bootloader`)
// 2. let the user select from a boot menu
// 3. use "bootloader.default" commandline arg
//
// Args:
// have_network: true if we have a working network interface.
// have_fb: true if we have a framebuffer.
//
// Returns the chosen boot action.
BootAction get_boot_action(bool have_network, bool have_fb);
__END_CDECLS
#endif // SRC_FIRMWARE_GIGABOOT_SRC_OSBOOT_H_