diff options
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 15 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 22 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 8 | ||||
| -rw-r--r-- | include/asm-x86/boot.h | 8 |
4 files changed, 31 insertions, 22 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index 036e635f18a..ba7736cf2ec 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -130,7 +130,7 @@ relocated: /* * Setup the stack for the decompressor */ - leal stack_end(%ebx), %esp + leal boot_stack_end(%ebx), %esp /* * Do the decompression, and jump to the new kernel.. @@ -142,8 +142,8 @@ relocated: pushl %eax # input_len leal input_data(%ebx), %eax pushl %eax # input_data - leal _end(%ebx), %eax - pushl %eax # end of the image as third argument + leal boot_heap(%ebx), %eax + pushl %eax # heap area as third argument pushl %esi # real mode pointer as second arg call decompress_kernel addl $20, %esp @@ -181,7 +181,10 @@ relocated: jmp *%ebp .bss +/* Stack and heap for uncompression */ .balign 4 -stack: - .fill 4096, 1, 0 -stack_end: +boot_heap: + .fill BOOT_HEAP_SIZE, 1, 0 +boot_stack: + .fill BOOT_STACK_SIZE, 1, 0 +boot_stack_end: diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index e8657b98c90..7a212a62db3 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -28,6 +28,7 @@ #include <asm/segment.h> #include <asm/pgtable.h> #include <asm/page.h> +#include <asm/boot.h> #include <asm/msr.h> #include <asm/asm-offsets.h> @@ -62,7 +63,7 @@ startup_32: subl $1b, %ebp /* setup a stack and make sure cpu supports long mode. */ - movl $user_stack_end, %eax + movl $boot_stack_end, %eax addl %ebp, %eax movl %eax, %esp @@ -274,7 +275,7 @@ relocated: stosb /* Setup the stack */ - leaq user_stack_end(%rip), %rsp + leaq boot_stack_end(%rip), %rsp /* zero EFLAGS after setting rsp */ pushq $0 @@ -285,7 +286,7 @@ relocated: */ pushq %rsi # Save the real mode argument movq %rsi, %rdi # real mode address - leaq _heap(%rip), %rsi # _heap + leaq boot_heap(%rip), %rsi # malloc area for uncompression leaq input_data(%rip), %rdx # input_data movl input_len(%rip), %eax movq %rax, %rcx # input_len @@ -310,9 +311,12 @@ gdt: .quad 0x0080890000000000 /* TS descriptor */ .quad 0x0000000000000000 /* TS continued */ gdt_end: - .bss -/* Stack for uncompression */ - .balign 4 -user_stack: - .fill 4096,4,0 -user_stack_end: + +.bss +/* Stack and heap for uncompression */ +.balign 4 +boot_heap: + .fill BOOT_HEAP_SIZE, 1, 0 +boot_stack: + .fill BOOT_STACK_SIZE, 1, 0 +boot_stack_end: diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index dad4e699f5a..90456cee47c 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -217,12 +217,6 @@ static void putstr(const char *); static memptr free_mem_ptr; static memptr free_mem_end_ptr; -#ifdef CONFIG_X86_64 -#define HEAP_SIZE 0x7000 -#else -#define HEAP_SIZE 0x4000 -#endif - static char *vidmem; static int vidport; static int lines, cols; @@ -449,7 +443,7 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap, window = output; /* Output buffer (Normally at 1M) */ free_mem_ptr = heap; /* Heap */ - free_mem_end_ptr = heap + HEAP_SIZE; + free_mem_end_ptr = heap + BOOT_HEAP_SIZE; inbuf = input_data; /* Input buffer */ insize = input_len; inptr = 0; diff --git a/include/asm-x86/boot.h b/include/asm-x86/boot.h index ed8affbf96c..2faed7ecb09 100644 --- a/include/asm-x86/boot.h +++ b/include/asm-x86/boot.h @@ -17,4 +17,12 @@ + (CONFIG_PHYSICAL_ALIGN - 1)) \ & ~(CONFIG_PHYSICAL_ALIGN - 1)) +#ifdef CONFIG_X86_64 +#define BOOT_HEAP_SIZE 0x7000 +#define BOOT_STACK_SIZE 0x4000 +#else +#define BOOT_HEAP_SIZE 0x4000 +#define BOOT_STACK_SIZE 0x1000 +#endif + #endif /* _ASM_BOOT_H */ |