diff options
Diffstat (limited to 'runkernel.inc')
| -rw-r--r-- | runkernel.inc | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/runkernel.inc b/runkernel.inc index 39d8e908..98d826f0 100644 --- a/runkernel.inc +++ b/runkernel.inc @@ -97,10 +97,14 @@ kernel_sane: push ax ; Save the cluster pointer for later... ; push si + ; -; Get the BIOS' idea of what the size of high memory is. +; Initialize our end of memory pointer ; - call highmemsize + mov eax,[HighMemRsvd] + xor ax,ax ; Align to a 64K boundary + mov [MyHighMemSize],eax + ; ; Construct the command line (append options have already been copied) ; @@ -195,7 +199,7 @@ is_mem_cmd: %if HIGHMEM_SLOP != 0 sub ebx,HIGHMEM_SLOP %endif - mov [cs:HighMemSize],ebx + mov [cs:MyHighMemSize],ebx jmp short skip_this_opt cmdline_end: push cs ; Restore standard DS @@ -256,7 +260,7 @@ read_kernel: mov si,dotdot_msg ; Print dots call cwritestr - mov eax,[HighMemSize] + mov eax,[MyHighMemSize] sub eax,100000h ; Load address cmp eax,[KernelSize] jb no_high_mem ; Not enough high memory @@ -592,7 +596,7 @@ loadinitrd: mov es,ax push ecx ; Bytes to load - mov edx,[HighMemSize] ; End of memory + mov edx,[MyHighMemSize] ; End of memory dec edx mov eax,[RamdiskMax] ; Highest address allowed by kernel cmp edx,eax @@ -670,6 +674,7 @@ boot_image_len equ $-boot_image section .bss alignb 4 +MyHighMemSize resd 1 ; Possibly adjusted highmem size RamdiskMax resd 1 ; Highest address for ramdisk KernelSize resd 1 ; Size of kernel in bytes KernelSects resd 1 ; Size of kernel in sectors |