xref: /linux/arch/mips/cavium-octeon/octeon_boot.h (revision fcc8487d477a3452a1d0ccbdd4c5e0e1e3cb8bed)
1 /*
2  * (C) Copyright 2004, 2005 Cavium Networks
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of
7  * the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17  * MA 02111-1307 USA
18  */
19 
20 #ifndef __OCTEON_BOOT_H__
21 #define __OCTEON_BOOT_H__
22 
23 #include <linux/types.h>
24 
25 struct boot_init_vector {
26 	/* First stage address - in ram instead of flash */
27 	uint64_t code_addr;
28 	/* Setup code for application, NOT application entry point */
29 	uint32_t app_start_func_addr;
30 	/* k0 is used for global data - needs to be passed to other cores */
31 	uint32_t k0_val;
32 	/* Address of boot info block structure */
33 	uint64_t boot_info_addr;
34 	uint32_t flags;		/* flags */
35 	uint32_t pad;
36 };
37 
38 /* similar to bootloader's linux_app_boot_info but without global data */
39 struct linux_app_boot_info {
40 #ifdef __BIG_ENDIAN_BITFIELD
41 	uint32_t labi_signature;
42 	uint32_t start_core0_addr;
43 	uint32_t avail_coremask;
44 	uint32_t pci_console_active;
45 	uint32_t icache_prefetch_disable;
46 	uint32_t padding;
47 	uint64_t InitTLBStart_addr;
48 	uint32_t start_app_addr;
49 	uint32_t cur_exception_base;
50 	uint32_t no_mark_private_data;
51 	uint32_t compact_flash_common_base_addr;
52 	uint32_t compact_flash_attribute_base_addr;
53 	uint32_t led_display_base_addr;
54 #else
55 	uint32_t start_core0_addr;
56 	uint32_t labi_signature;
57 
58 	uint32_t pci_console_active;
59 	uint32_t avail_coremask;
60 
61 	uint32_t padding;
62 	uint32_t icache_prefetch_disable;
63 
64 	uint64_t InitTLBStart_addr;
65 
66 	uint32_t cur_exception_base;
67 	uint32_t start_app_addr;
68 
69 	uint32_t compact_flash_common_base_addr;
70 	uint32_t no_mark_private_data;
71 
72 	uint32_t led_display_base_addr;
73 	uint32_t compact_flash_attribute_base_addr;
74 #endif
75 };
76 
77 /* If not to copy a lot of bootloader's structures
78    here is only offset of requested member */
79 #define AVAIL_COREMASK_OFFSET_IN_LINUX_APP_BOOT_BLOCK	 0x765c
80 
81 /* hardcoded in bootloader */
82 #define	 LABI_ADDR_IN_BOOTLOADER			 0x700
83 
84 #define LINUX_APP_BOOT_BLOCK_NAME "linux-app-boot"
85 
86 #define LABI_SIGNATURE 0xAABBCC01
87 
88 /*  from uboot-headers/octeon_mem_map.h */
89 #define EXCEPTION_BASE_INCR	(4 * 1024)
90 			       /* Increment size for exception base addresses (4k minimum) */
91 #define EXCEPTION_BASE_BASE	0
92 #define BOOTLOADER_PRIV_DATA_BASE	(EXCEPTION_BASE_BASE + 0x800)
93 #define BOOTLOADER_BOOT_VECTOR		(BOOTLOADER_PRIV_DATA_BASE)
94 
95 #endif /* __OCTEON_BOOT_H__ */
96