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x86: Update the bootparam header

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This header is missing a few of the newer features from the specification.
Add these as well as a link to the spec. Also use the BIT() macros where
appropriate.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-09-05 14:50:37 -06:00 committed by Bin Meng
parent e119de72e3
commit 6e04cb76db
1 changed files with 19 additions and 6 deletions
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25
arch/x86/include/asm/bootparam.h
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@ -24,6 +24,11 @@ struct setup_data {
__u8 data[0];
};
/**
* struct setup_header - Information needed by Linux to boot
*
* See https://www.kernel.org/doc/html/latest/x86/boot.html
*/
struct setup_header {
__u8 setup_sects;
__u16 root_flags;
@ -43,15 +48,16 @@ struct setup_header {
__u16 kernel_version;
__u8 type_of_loader;
__u8 loadflags;
#define LOADED_HIGH (1<<0)
#define QUIET_FLAG (1<<5)
#define KEEP_SEGMENTS (1<<6)
#define CAN_USE_HEAP (1<<7)
#define LOADED_HIGH BIT(0)
#define KASLR_FLAG BIT(1)
#define QUIET_FLAG BIT(5)
#define KEEP_SEGMENTS BIT(6) /* Obsolete */
#define CAN_USE_HEAP BIT(7)
__u16 setup_move_size;
__u32 code32_start;
__u32 ramdisk_image;
__u32 ramdisk_size;
__u32 bootsect_kludge;
__u32 bootsect_kludge; /* Obsolete */
__u16 heap_end_ptr;
__u8 ext_loader_ver;
__u8 ext_loader_type;
@ -59,7 +65,13 @@ struct setup_header {
__u32 initrd_addr_max;
__u32 kernel_alignment;
__u8 relocatable_kernel;
__u8 _pad2[3];
u8 min_alignment;
#define XLF_KERNEL_64 BIT(0)
#define XLF_CAN_BE_LOADED_ABOVE_4G BIT(1)
#define XLF_EFI_HANDOVER_32 BIT(2)
#define XLF_EFI_HANDOVER_64 BIT(3)
#define XLF_EFI_KEXEC BIT(4)
u16 xloadflags;
__u32 cmdline_size;
__u32 hardware_subarch;
__u64 hardware_subarch_data;
@ -69,6 +81,7 @@ struct setup_header {
__u64 pref_address;
__u32 init_size;
__u32 handover_offset;
u32 kernel_info_offset;
} __attribute__((packed));
struct sys_desc_table {