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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

bootparam.h (7053B)


  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. #ifndef _ASM_X86_BOOTPARAM_H
  3. #define _ASM_X86_BOOTPARAM_H
  4. #include <asm/setup_data.h>
  5. /* ram_size flags */
  6. #define RAMDISK_IMAGE_START_MASK 0x07FF
  7. #define RAMDISK_PROMPT_FLAG 0x8000
  8. #define RAMDISK_LOAD_FLAG 0x4000
  9. /* loadflags */
  10. #define LOADED_HIGH (1<<0)
  11. #define KASLR_FLAG (1<<1)
  12. #define QUIET_FLAG (1<<5)
  13. #define KEEP_SEGMENTS (1<<6)
  14. #define CAN_USE_HEAP (1<<7)
  15. /* xloadflags */
  16. #define XLF_KERNEL_64 (1<<0)
  17. #define XLF_CAN_BE_LOADED_ABOVE_4G (1<<1)
  18. #define XLF_EFI_HANDOVER_32 (1<<2)
  19. #define XLF_EFI_HANDOVER_64 (1<<3)
  20. #define XLF_EFI_KEXEC (1<<4)
  21. #define XLF_5LEVEL (1<<5)
  22. #define XLF_5LEVEL_ENABLED (1<<6)
  23. #define XLF_MEM_ENCRYPTION (1<<7)
  24. #ifndef __ASSEMBLY__
  25. #include <linux/types.h>
  26. #include <linux/screen_info.h>
  27. #include <linux/apm_bios.h>
  28. #include <linux/edd.h>
  29. #include <asm/ist.h>
  30. #include <video/edid.h>
  31. struct setup_header {
  32. __u8 setup_sects;
  33. __u16 root_flags;
  34. __u32 syssize;
  35. __u16 ram_size;
  36. __u16 vid_mode;
  37. __u16 root_dev;
  38. __u16 boot_flag;
  39. __u16 jump;
  40. __u32 header;
  41. __u16 version;
  42. __u32 realmode_swtch;
  43. __u16 start_sys_seg;
  44. __u16 kernel_version;
  45. __u8 type_of_loader;
  46. __u8 loadflags;
  47. __u16 setup_move_size;
  48. __u32 code32_start;
  49. __u32 ramdisk_image;
  50. __u32 ramdisk_size;
  51. __u32 bootsect_kludge;
  52. __u16 heap_end_ptr;
  53. __u8 ext_loader_ver;
  54. __u8 ext_loader_type;
  55. __u32 cmd_line_ptr;
  56. __u32 initrd_addr_max;
  57. __u32 kernel_alignment;
  58. __u8 relocatable_kernel;
  59. __u8 min_alignment;
  60. __u16 xloadflags;
  61. __u32 cmdline_size;
  62. __u32 hardware_subarch;
  63. __u64 hardware_subarch_data;
  64. __u32 payload_offset;
  65. __u32 payload_length;
  66. __u64 setup_data;
  67. __u64 pref_address;
  68. __u32 init_size;
  69. __u32 handover_offset;
  70. __u32 kernel_info_offset;
  71. } __attribute__((packed));
  72. struct sys_desc_table {
  73. __u16 length;
  74. __u8 table[14];
  75. };
  76. /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
  77. struct olpc_ofw_header {
  78. __u32 ofw_magic; /* OFW signature */
  79. __u32 ofw_version;
  80. __u32 cif_handler; /* callback into OFW */
  81. __u32 irq_desc_table;
  82. } __attribute__((packed));
  83. struct efi_info {
  84. __u32 efi_loader_signature;
  85. __u32 efi_systab;
  86. __u32 efi_memdesc_size;
  87. __u32 efi_memdesc_version;
  88. __u32 efi_memmap;
  89. __u32 efi_memmap_size;
  90. __u32 efi_systab_hi;
  91. __u32 efi_memmap_hi;
  92. };
  93. /*
  94. * This is the maximum number of entries in struct boot_params::e820_table
  95. * (the zeropage), which is part of the x86 boot protocol ABI:
  96. */
  97. #define E820_MAX_ENTRIES_ZEROPAGE 128
  98. /*
  99. * Smallest compatible version of jailhouse_setup_data required by this kernel.
  100. */
  101. #define JAILHOUSE_SETUP_REQUIRED_VERSION 1
  102. /* The so-called "zeropage" */
  103. struct boot_params {
  104. struct screen_info screen_info; /* 0x000 */
  105. struct apm_bios_info apm_bios_info; /* 0x040 */
  106. __u8 _pad2[4]; /* 0x054 */
  107. __u64 tboot_addr; /* 0x058 */
  108. struct ist_info ist_info; /* 0x060 */
  109. __u64 acpi_rsdp_addr; /* 0x070 */
  110. __u8 _pad3[8]; /* 0x078 */
  111. __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
  112. __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
  113. struct sys_desc_table sys_desc_table; /* obsolete! */ /* 0x0a0 */
  114. struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */
  115. __u32 ext_ramdisk_image; /* 0x0c0 */
  116. __u32 ext_ramdisk_size; /* 0x0c4 */
  117. __u32 ext_cmd_line_ptr; /* 0x0c8 */
  118. __u8 _pad4[112]; /* 0x0cc */
  119. __u32 cc_blob_address; /* 0x13c */
  120. struct edid_info edid_info; /* 0x140 */
  121. struct efi_info efi_info; /* 0x1c0 */
  122. __u32 alt_mem_k; /* 0x1e0 */
  123. __u32 scratch; /* Scratch field! */ /* 0x1e4 */
  124. __u8 e820_entries; /* 0x1e8 */
  125. __u8 eddbuf_entries; /* 0x1e9 */
  126. __u8 edd_mbr_sig_buf_entries; /* 0x1ea */
  127. __u8 kbd_status; /* 0x1eb */
  128. __u8 secure_boot; /* 0x1ec */
  129. __u8 _pad5[2]; /* 0x1ed */
  130. /*
  131. * The sentinel is set to a nonzero value (0xff) in header.S.
  132. *
  133. * A bootloader is supposed to only take setup_header and put
  134. * it into a clean boot_params buffer. If it turns out that
  135. * it is clumsy or too generous with the buffer, it most
  136. * probably will pick up the sentinel variable too. The fact
  137. * that this variable then is still 0xff will let kernel
  138. * know that some variables in boot_params are invalid and
  139. * kernel should zero out certain portions of boot_params.
  140. */
  141. __u8 sentinel; /* 0x1ef */
  142. __u8 _pad6[1]; /* 0x1f0 */
  143. struct setup_header hdr; /* setup header */ /* 0x1f1 */
  144. __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
  145. __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
  146. struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */
  147. __u8 _pad8[48]; /* 0xcd0 */
  148. struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
  149. __u8 _pad9[276]; /* 0xeec */
  150. } __attribute__((packed));
  151. /**
  152. * enum x86_hardware_subarch - x86 hardware subarchitecture
  153. *
  154. * The x86 hardware_subarch and hardware_subarch_data were added as of the x86
  155. * boot protocol 2.07 to help distinguish and support custom x86 boot
  156. * sequences. This enum represents accepted values for the x86
  157. * hardware_subarch. Custom x86 boot sequences (not X86_SUBARCH_PC) do not
  158. * have or simply *cannot* make use of natural stubs like BIOS or EFI, the
  159. * hardware_subarch can be used on the Linux entry path to revector to a
  160. * subarchitecture stub when needed. This subarchitecture stub can be used to
  161. * set up Linux boot parameters or for special care to account for nonstandard
  162. * handling of page tables.
  163. *
  164. * These enums should only ever be used by x86 code, and the code that uses
  165. * it should be well contained and compartmentalized.
  166. *
  167. * KVM and Xen HVM do not have a subarch as these are expected to follow
  168. * standard x86 boot entries. If there is a genuine need for "hypervisor" type
  169. * that should be considered separately in the future. Future guest types
  170. * should seriously consider working with standard x86 boot stubs such as
  171. * the BIOS or EFI boot stubs.
  172. *
  173. * WARNING: this enum is only used for legacy hacks, for platform features that
  174. * are not easily enumerated or discoverable. You should not ever use
  175. * this for new features.
  176. *
  177. * @X86_SUBARCH_PC: Should be used if the hardware is enumerable using standard
  178. * PC mechanisms (PCI, ACPI) and doesn't need a special boot flow.
  179. * @X86_SUBARCH_LGUEST: Used for x86 hypervisor demo, lguest, deprecated
  180. * @X86_SUBARCH_XEN: Used for Xen guest types which follow the PV boot path,
  181. * which start at __asm__ startup_xen() entry point and later jump to the C
  182. * xen_start_kernel() entry point. Both domU and dom0 type of guests are
  183. * currently supported through this PV boot path.
  184. * @X86_SUBARCH_INTEL_MID: Used for Intel MID (Mobile Internet Device) platform
  185. * systems which do not have the PCI legacy interfaces.
  186. * @X86_SUBARCH_CE4100: Used for Intel CE media processor (CE4100) SoC
  187. * for settop boxes and media devices, the use of a subarch for CE4100
  188. * is more of a hack...
  189. */
  190. enum x86_hardware_subarch {
  191. X86_SUBARCH_PC = 0,
  192. X86_SUBARCH_LGUEST,
  193. X86_SUBARCH_XEN,
  194. X86_SUBARCH_INTEL_MID,
  195. X86_SUBARCH_CE4100,
  196. X86_NR_SUBARCHS,
  197. };
  198. #endif /* __ASSEMBLY__ */
  199. #endif /* _ASM_X86_BOOTPARAM_H */