diff options
Diffstat (limited to 'arch/i386/boot')
| -rw-r--r-- | arch/i386/boot/Makefile | 9 | ||||
| -rw-r--r-- | arch/i386/boot/compressed/misc.c | 32 | ||||
| -rw-r--r-- | arch/i386/boot/edd.S | 97 | ||||
| -rw-r--r-- | arch/i386/boot/setup.S | 7 | ||||
| -rw-r--r-- | arch/i386/boot/video.S | 19 |
5 files changed, 115 insertions, 49 deletions
diff --git a/arch/i386/boot/Makefile b/arch/i386/boot/Makefile index 33e55476381b..e97946626064 100644 --- a/arch/i386/boot/Makefile +++ b/arch/i386/boot/Makefile @@ -109,8 +109,13 @@ fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf isoimage: $(BOOTIMAGE) -rm -rf $(obj)/isoimage mkdir $(obj)/isoimage - cp `echo /usr/lib*/syslinux/isolinux.bin | awk '{ print $1; }'` \ - $(obj)/isoimage + for i in lib lib64 share end ; do \ + if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \ + cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \ + break ; \ + fi ; \ + if [ $$i = end ] ; then exit 1 ; fi ; \ + done cp $(BOOTIMAGE) $(obj)/isoimage/linux echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg if [ -f '$(FDINITRD)' ] ; then \ diff --git a/arch/i386/boot/compressed/misc.c b/arch/i386/boot/compressed/misc.c index f19f3a7492a5..b2ccd543410d 100644 --- a/arch/i386/boot/compressed/misc.c +++ b/arch/i386/boot/compressed/misc.c @@ -24,14 +24,6 @@ #undef memset #undef memcpy - -/* - * Why do we do this? Don't ask me.. - * - * Incomprehensible are the ways of bootloaders. - */ -static void* memset(void *, int, size_t); -static void* memcpy(void *, __const void *, size_t); #define memzero(s, n) memset ((s), 0, (n)) typedef unsigned char uch; @@ -93,7 +85,7 @@ static unsigned char *real_mode; /* Pointer to real-mode data */ #endif #define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0)) -extern char input_data[]; +extern unsigned char input_data[]; extern int input_len; static long bytes_out = 0; @@ -103,6 +95,9 @@ static unsigned long output_ptr = 0; static void *malloc(int size); static void free(void *where); +static void *memset(void *s, int c, unsigned n); +static void *memcpy(void *dest, const void *src, unsigned n); + static void putstr(const char *); extern int end; @@ -205,7 +200,7 @@ static void putstr(const char *s) outb_p(0xff & (pos >> 1), vidport+1); } -static void* memset(void* s, int c, size_t n) +static void* memset(void* s, int c, unsigned n) { int i; char *ss = (char*)s; @@ -214,14 +209,13 @@ static void* memset(void* s, int c, size_t n) return s; } -static void* memcpy(void* __dest, __const void* __src, - size_t __n) +static void* memcpy(void* dest, const void* src, unsigned n) { int i; - char *d = (char *)__dest, *s = (char *)__src; + char *d = (char *)dest, *s = (char *)src; - for (i=0;i<__n;i++) d[i] = s[i]; - return __dest; + for (i=0;i<n;i++) d[i] = s[i]; + return dest; } /* =========================================================================== @@ -309,7 +303,7 @@ static void setup_normal_output_buffer(void) #else if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory"); #endif - output_data = (char *)__PHYSICAL_START; /* Normally Points to 1M */ + output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */ free_mem_end_ptr = (long)real_mode; } @@ -324,11 +318,9 @@ static void setup_output_buffer_if_we_run_high(struct moveparams *mv) #ifdef STANDARD_MEMORY_BIOS_CALL if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory"); #else - if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < - (3*1024)) - error("Less than 4MB of memory"); + if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory"); #endif - mv->low_buffer_start = output_data = (char *)LOW_BUFFER_START; + mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START; low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX ? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff; low_buffer_size = low_buffer_end - LOW_BUFFER_START; diff --git a/arch/i386/boot/edd.S b/arch/i386/boot/edd.S index 4b84ea216f2b..34321368011a 100644 --- a/arch/i386/boot/edd.S +++ b/arch/i386/boot/edd.S @@ -15,42 +15,95 @@ #include <asm/setup.h> #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) + +# It is assumed that %ds == INITSEG here + movb $0, (EDD_MBR_SIG_NR_BUF) movb $0, (EDDNR) -# Check the command line for two options: +# Check the command line for options: # edd=of disables EDD completely (edd=off) # edd=sk skips the MBR test (edd=skipmbr) +# edd=on re-enables EDD (edd=on) + pushl %esi - cmpl $0, %cs:cmd_line_ptr - jz done_cl + movw $edd_mbr_sig_start, %di # Default to edd=on + movl %cs:(cmd_line_ptr), %esi -# ds:esi has the pointer to the command line now - movl $(COMMAND_LINE_SIZE-7), %ecx -# loop through kernel command line one byte at a time -cl_loop: - cmpl $EDD_CL_EQUALS, (%si) + andl %esi, %esi + jz old_cl # Old boot protocol? + +# Convert to a real-mode pointer in fs:si + movl %esi, %eax + shrl $4, %eax + movw %ax, %fs + andw $0xf, %si + jmp have_cl_pointer + +# Old-style boot protocol? +old_cl: + push %ds # aka INITSEG + pop %fs + + cmpw $0xa33f, (0x20) + jne done_cl # No command line at all? + movw (0x22), %si # Pointer relative to INITSEG + +# fs:si has the pointer to the command line now +have_cl_pointer: + +# Loop through kernel command line one byte at a time. Just in +# case the loader is buggy and failed to null-terminate the command line +# terminate if we get close enough to the end of the segment that we +# cannot fit "edd=XX"... +cl_atspace: + cmpw $-5, %si # Watch for segment wraparound + jae done_cl + movl %fs:(%si), %eax + andb %al, %al # End of line? + jz done_cl + cmpl $EDD_CL_EQUALS, %eax jz found_edd_equals - incl %esi - loop cl_loop - jmp done_cl + cmpb $0x20, %al # <= space consider whitespace + ja cl_skipword + incw %si + jmp cl_atspace + +cl_skipword: + cmpw $-5, %si # Watch for segment wraparound + jae done_cl + movb %fs:(%si), %al # End of string? + andb %al, %al + jz done_cl + cmpb $0x20, %al + jbe cl_atspace + incw %si + jmp cl_skipword + found_edd_equals: # only looking at first two characters after equals - addl $4, %esi - cmpw $EDD_CL_OFF, (%si) # edd=of - jz do_edd_off - cmpw $EDD_CL_SKIP, (%si) # edd=sk - jz do_edd_skipmbr - jmp done_cl +# late overrides early on the command line, so keep going after finding something + movw %fs:4(%si), %ax + cmpw $EDD_CL_OFF, %ax # edd=of + je do_edd_off + cmpw $EDD_CL_SKIP, %ax # edd=sk + je do_edd_skipmbr + cmpw $EDD_CL_ON, %ax # edd=on + je do_edd_on + jmp cl_skipword do_edd_skipmbr: - popl %esi - jmp edd_start + movw $edd_start, %di + jmp cl_skipword do_edd_off: - popl %esi - jmp edd_done + movw $edd_done, %di + jmp cl_skipword +do_edd_on: + movw $edd_mbr_sig_start, %di + jmp cl_skipword + done_cl: popl %esi - + jmpw *%di # Read the first sector of each BIOS disk device and store the 4-byte signature edd_mbr_sig_start: diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S index ca668d9df164..3aec4538a113 100644 --- a/arch/i386/boot/setup.S +++ b/arch/i386/boot/setup.S @@ -46,9 +46,8 @@ * by Robert Schwebel, December 2001 <robert@schwebel.de> */ -#include <linux/config.h> #include <asm/segment.h> -#include <linux/version.h> +#include <linux/utsrelease.h> #include <linux/compile.h> #include <asm/boot.h> #include <asm/e820.h> @@ -495,12 +494,12 @@ no_voyager: movw %cs, %ax # aka SETUPSEG subw $DELTA_INITSEG, %ax # aka INITSEG movw %ax, %ds - movw $0, (0x1ff) # default is no pointing device + movb $0, (0x1ff) # default is no pointing device int $0x11 # int 0x11: equipment list testb $0x04, %al # check if mouse installed jz no_psmouse - movw $0xAA, (0x1ff) # device present + movb $0xAA, (0x1ff) # device present no_psmouse: #if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) diff --git a/arch/i386/boot/video.S b/arch/i386/boot/video.S index c9343c3a8082..8c2a6faeeae5 100644 --- a/arch/i386/boot/video.S +++ b/arch/i386/boot/video.S @@ -1929,7 +1929,7 @@ skip10: movb %ah, %al ret store_edid: -#ifdef CONFIG_FB_FIRMWARE_EDID +#ifdef CONFIG_FIRMWARE_EDID pushw %es # just save all registers pushw %ax pushw %bx @@ -1947,6 +1947,22 @@ store_edid: rep stosl + pushw %es # save ES + xorw %di, %di # Report Capability + pushw %di + popw %es # ES:DI must be 0:0 + movw $0x4f15, %ax + xorw %bx, %bx + xorw %cx, %cx + int $0x10 + popw %es # restore ES + + cmpb $0x00, %ah # call successful + jne no_edid + + cmpb $0x4f, %al # function supported + jne no_edid + movw $0x4f15, %ax # do VBE/DDC movw $0x01, %bx movw $0x00, %cx @@ -1954,6 +1970,7 @@ store_edid: movw $0x140, %di int $0x10 +no_edid: popw %di # restore all registers popw %dx popw %cx |
