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https://github.com/u-boot/u-boot.git
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9ad5fdf1a8
Move zboot_start() and zboot_info() in with the other logic functions. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
162 lines
4.8 KiB
C
162 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2002
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* Daniel Engström, Omicron Ceti AB, daniel@omicron.se
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*/
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#ifndef _ASM_ZIMAGE_H_
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#define _ASM_ZIMAGE_H_
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#include <asm/bootparam.h>
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#include <asm/e820.h>
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/* linux i386 zImage/bzImage header. Offsets relative to
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* the start of the image */
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#define HEAP_FLAG 0x80
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#define BIG_KERNEL_FLAG 0x01
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/* magic numbers */
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#define KERNEL_MAGIC 0xaa55
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#define KERNEL_V2_MAGIC 0x53726448
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#define COMMAND_LINE_MAGIC 0xA33F
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/* limits */
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#define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */
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#define ZIMAGE_MAX_SIZE 512*1024 /* 512k */
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#define SETUP_MAX_SIZE 32768
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#define SETUP_START_OFFSET 0x200
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#define BZIMAGE_LOAD_ADDR 0x100000
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#define ZIMAGE_LOAD_ADDR 0x10000
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enum {
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ZBOOT_STATE_START = BIT(0),
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ZBOOT_STATE_LOAD = BIT(1),
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ZBOOT_STATE_SETUP = BIT(2),
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ZBOOT_STATE_INFO = BIT(3),
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ZBOOT_STATE_GO = BIT(4),
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/* This one doesn't execute automatically, so stop the count before 5 */
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ZBOOT_STATE_DUMP = BIT(5),
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ZBOOT_STATE_COUNT = 5,
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};
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/**
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* struct zboot_state - Current state of the boot
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*
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* @bzimage_addr: Address of the bzImage to boot, or 0 if the image has already
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* been loaded and does not exist (as a cohesive whole) in memory
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* @bzimage_size: Size of the bzImage, or 0 to detect this
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* @initrd_addr: Address of the initial ramdisk, or 0 if none
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* @initrd_size: Size of the initial ramdisk, or 0 if none
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* @load_address: Address where the bzImage is moved before booting, either
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* BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
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* This is set up when loading the zimage
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* @base_ptr: Pointer to the boot parameters, typically at address
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* DEFAULT_SETUP_BASE
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* This is set up when loading the zimage
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* @cmdline: Environment variable containing the 'override' command line, or
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* NULL to use the one in the setup block
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*/
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struct zboot_state {
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ulong bzimage_addr;
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ulong bzimage_size;
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ulong initrd_addr;
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ulong initrd_size;
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ulong load_address;
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struct boot_params *base_ptr;
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const char *cmdline;
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};
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extern struct zboot_state state;
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/**
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* zimage_dump() - Dump information about a zimage
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*
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* @base_ptr: Pointer to the boot parameters
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* @show_cmdline: true to show the kernel command line
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*/
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void zimage_dump(struct boot_params *base_ptr, bool show_cmdline);
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/**
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* zboot_load() - Load a zimage
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*
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* Load the zimage into the correct place
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*
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* Return: 0 if OK, -ve on error
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*/
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int zboot_load(void);
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/**
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* zboot_setup() - Set up the zboot image reeady for booting
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*
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* Return: 0 if OK, -ve on error
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*/
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int zboot_setup(void);
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/**
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* zboot_go() - Start the image
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*
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* Return: 0 if OK, -ve on error
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*/
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int zboot_go(void);
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/**
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* load_zimage() - Load a zImage or bzImage
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*
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* This copies an image into the standard location ready for setup
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*
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* @image: Address of image to load
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* @kernel_size: Size of kernel including setup block (or 0 if the kernel is
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* new enough to have a 'syssize' value)
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* @load_addressp: Returns the address where the kernel has been loaded
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* Return: address of setup block, or NULL if something went wrong
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*/
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struct boot_params *load_zimage(char *image, unsigned long kernel_size,
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ulong *load_addressp);
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/**
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* setup_zimage() - Set up a loaded zImage or bzImage ready for booting
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*
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* @setup_base: Pointer to the boot parameters, typically at address
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* DEFAULT_SETUP_BASE
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* @cmd_line: Place to put the command line, or NULL to use the one in the setup
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* block
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* @initrd_addr: Address of the initial ramdisk, or 0 if none
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* @initrd_size: Size of the initial ramdisk, or 0 if none
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* @load_address: Address where the bzImage is moved before booting, either
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* BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
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* @cmdline_force: Address of 'override' command line, or 0 to use the one in
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* the * setup block
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* Return: 0 (always)
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*/
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int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
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ulong initrd_addr, ulong initrd_size, ulong cmdline_force);
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/**
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* zboot_start() - Prepare to boot a zimage
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*
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* Record information about a zimage so it can be booted
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*
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* @bzimage_addr: Address of the bzImage to boot
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* @bzimage_size: Size of the bzImage, or 0 to detect this
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* @initrd_addr: Address of the initial ramdisk, or 0 if none
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* @initrd_size: Size of the initial ramdisk, or 0 if none
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* @base_addr: If non-zero, this indicates that the boot parameters have already
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* been loaded by the caller to this address, so the load_zimage() call
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* in zboot_load() will be skipped when booting
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* @cmdline: Environment variable containing the 'override' command line, or
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* NULL to use the one in the setup block
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*/
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void zboot_start(ulong bzimage_addr, ulong bzimage_size, ulong initrd_addr,
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ulong initrd_size, ulong base_addr, const char *cmdline);
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/**
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* zboot_info() - Show simple info about a zimage
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*
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* Shows wherer the kernel was loaded and also the setup base
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*/
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void zboot_info(void);
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#endif
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