xref: /openbmc/linux/arch/x86/include/asm/boot.h (revision cd4d09ec)
1 #ifndef _ASM_X86_BOOT_H
2 #define _ASM_X86_BOOT_H
3 
4 
5 #include <asm/pgtable_types.h>
6 #include <uapi/asm/boot.h>
7 
8 /* Physical address where kernel should be loaded. */
9 #define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
10 				+ (CONFIG_PHYSICAL_ALIGN - 1)) \
11 				& ~(CONFIG_PHYSICAL_ALIGN - 1))
12 
13 /* Minimum kernel alignment, as a power of two */
14 #ifdef CONFIG_X86_64
15 #define MIN_KERNEL_ALIGN_LG2	PMD_SHIFT
16 #else
17 #define MIN_KERNEL_ALIGN_LG2	(PAGE_SHIFT + THREAD_SIZE_ORDER)
18 #endif
19 #define MIN_KERNEL_ALIGN	(_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
20 
21 #if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
22 	(CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
23 #error "Invalid value for CONFIG_PHYSICAL_ALIGN"
24 #endif
25 
26 #ifdef CONFIG_KERNEL_BZIP2
27 #define BOOT_HEAP_SIZE             0x400000
28 #else /* !CONFIG_KERNEL_BZIP2 */
29 
30 #define BOOT_HEAP_SIZE	0x10000
31 
32 #endif /* !CONFIG_KERNEL_BZIP2 */
33 
34 #ifdef CONFIG_X86_64
35 #define BOOT_STACK_SIZE	0x4000
36 #else
37 #define BOOT_STACK_SIZE	0x1000
38 #endif
39 
40 #endif /* _ASM_X86_BOOT_H */
41