diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/pc386/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/i386/pc386/start/start.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/start/start.S b/c/src/lib/libbsp/i386/pc386/start/start.S index c09903e807..361f973c2e 100644 --- a/c/src/lib/libbsp/i386/pc386/start/start.S +++ b/c/src/lib/libbsp/i386/pc386/start/start.S @@ -87,6 +87,22 @@ speakl: jmp speakl # and SPIN!!! nop cli # DISABLE INTERRUPTS!!! cld + + /* Save multiboot info */ + cmp $0x2badb002,eax + jne 1f + /* We have multiboot info; let's hope DS and ES are OK... */ + movl ebx, SYM(_boot_multiboot_info_p) + /* Check for memory size info and save */ + movl ebx, esi + movl $SYM(_boot_multiboot_info), edi + movsd + /* only save flag 1 since that's the only data we save */ + and $1,-4(edi) + je 1f + movl $2,ecx + rep movsd +1: #ifdef DEBUG_EARLY_START /* * Must get video attribute to have a working printk. @@ -178,6 +194,15 @@ SYM (zero_bss): END_CODE BEGIN_DATA + PUBLIC(_boot_multiboot_info_p) +SYM(_boot_multiboot_info_p): + .long 0 + + PUBLIC(_boot_multiboot_info) +SYM(_boot_multiboot_info): + .long 0 /* flags */ + .long 0 /* mem_lower */ + .long 0 /* mem_upper */ PUBLIC(_stack_size) SYM(_stack_size): |