diff options
Diffstat (limited to 'arch/x86/boot/compressed')
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 15 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 30 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 8 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/vmlinux_64.lds | 4 |
4 files changed, 29 insertions, 28 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index 036e635f18a3..ba7736cf2ec7 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 e8657b98c902..d8819efac81d 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 @@ -243,9 +244,9 @@ ENTRY(startup_64) /* Copy the compressed kernel to the end of our buffer * where decompression in place becomes safe. */ - leaq _end(%rip), %r8 - leaq _end(%rbx), %r9 - movq $_end /* - $startup_32 */, %rcx + leaq _end_before_pgt(%rip), %r8 + leaq _end_before_pgt(%rbx), %r9 + movq $_end_before_pgt /* - $startup_32 */, %rcx 1: subq $8, %r8 subq $8, %r9 movq 0(%r8), %rax @@ -267,14 +268,14 @@ relocated: */ xorq %rax, %rax leaq _edata(%rbx), %rdi - leaq _end(%rbx), %rcx + leaq _end_before_pgt(%rbx), %rcx subq %rdi, %rcx cld rep 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 dad4e699f5a3..90456cee47c3 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/arch/x86/boot/compressed/vmlinux_64.lds b/arch/x86/boot/compressed/vmlinux_64.lds index 7e5c7209f6cc..bef1ac891bce 100644 --- a/arch/x86/boot/compressed/vmlinux_64.lds +++ b/arch/x86/boot/compressed/vmlinux_64.lds @@ -39,10 +39,10 @@ SECTIONS *(.bss.*) *(COMMON) . = ALIGN(8); - _end = . ; + _end_before_pgt = . ; . = ALIGN(4096); pgtable = . ; . = . + 4096 * 6; - _heap = .; + _ebss = .; } } |