arch/mips/cavium-octeon/octeon_boot.h

Source file repositories/reference/linux-study-clean/arch/mips/cavium-octeon/octeon_boot.h

File Facts

System
Linux kernel
Corpus path
arch/mips/cavium-octeon/octeon_boot.h
Extension
.h
Size
2198 bytes
Lines
82
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct boot_init_vector {
	/* First stage address - in ram instead of flash */
	uint64_t code_addr;
	/* Setup code for application, NOT application entry point */
	uint32_t app_start_func_addr;
	/* k0 is used for global data - needs to be passed to other cores */
	uint32_t k0_val;
	/* Address of boot info block structure */
	uint64_t boot_info_addr;
	uint32_t flags;		/* flags */
	uint32_t pad;
};

/* similar to bootloader's linux_app_boot_info but without global data */
struct linux_app_boot_info {
#ifdef __BIG_ENDIAN_BITFIELD
	uint32_t labi_signature;
	uint32_t start_core0_addr;
	uint32_t avail_coremask;
	uint32_t pci_console_active;
	uint32_t icache_prefetch_disable;
	uint32_t padding;
	uint64_t InitTLBStart_addr;
	uint32_t start_app_addr;
	uint32_t cur_exception_base;
	uint32_t no_mark_private_data;
	uint32_t compact_flash_common_base_addr;
	uint32_t compact_flash_attribute_base_addr;
	uint32_t led_display_base_addr;
#else
	uint32_t start_core0_addr;
	uint32_t labi_signature;

	uint32_t pci_console_active;
	uint32_t avail_coremask;

	uint32_t padding;
	uint32_t icache_prefetch_disable;

	uint64_t InitTLBStart_addr;

	uint32_t cur_exception_base;
	uint32_t start_app_addr;

	uint32_t compact_flash_common_base_addr;
	uint32_t no_mark_private_data;

	uint32_t led_display_base_addr;
	uint32_t compact_flash_attribute_base_addr;
#endif
};

/* If not to copy a lot of bootloader's structures
   here is only offset of requested member */
#define AVAIL_COREMASK_OFFSET_IN_LINUX_APP_BOOT_BLOCK	 0x765c

/* hardcoded in bootloader */
#define	 LABI_ADDR_IN_BOOTLOADER			 0x700

#define LINUX_APP_BOOT_BLOCK_NAME "linux-app-boot"

#define LABI_SIGNATURE 0xAABBCC01

/*  from uboot-headers/octeon_mem_map.h */
#define EXCEPTION_BASE_INCR	(4 * 1024)
			       /* Increment size for exception base addresses (4k minimum) */
#define EXCEPTION_BASE_BASE	0
#define BOOTLOADER_PRIV_DATA_BASE	(EXCEPTION_BASE_BASE + 0x800)
#define BOOTLOADER_BOOT_VECTOR		(BOOTLOADER_PRIV_DATA_BASE)

#endif /* __OCTEON_BOOT_H__ */

Annotation

Implementation Notes