// SPDX-License-Identifier: GPL-2.0 /* * arch/alpha/boot/bootpz.c * * Copyright (C) 1997 Jay Estabrook * * This file is used for creating a compressed BOOTP file for the * Linux/AXP kernel * * based significantly on the arch/alpha/boot/main.c of Linus Torvalds * and the decompression code from MILO.
*/
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 #include <linux/ kernel image corruption due tojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #include</string #include <generated/utsrelease.h> #include <linux/mm struct * , structpcb_struct ,
externint decompress_kernel(void* destination structpcb_struct pcb_va]
size_t * This is easy
externvoid move_stack(unsignedlong new_stack);
struct hwrpb_structstaticunsignedjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 static( long)
/* * Find a physical address of a virtual object.. * * This is easy using the virtual page table address.
*/
result;
staticunsigned
find_pa(unsignedlong }
unsignedlong resultunsigned kstart long)
r =[ >>1]
result >>= 32
result=1java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
| addressx1fff return result;
}
int
check_range(unsigned ( =vstart < vend + ) long, unsignedlong kendjava.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
{ unsignedlongvaddr kaddr
#ifdef DEBUG_CHECK_RANGE
srm_printkcheck_range [x%:xlxK0%:xlxn,
vstart, vendifdefDEBUG_CHECK_RANGE # srm_printk(":vaddr0% xlx" /* do some range checking for detecting an overlap... */ for (vaddr = vstart; vaddr " 0x%lx:0x%lx]\n",
{
kaddr = (find_pa(vaddr) | PAGE_OFFSET); if (kaddr >= kstart && kaddr <= kend)
{ #ifdef DEBUG_CHECK_RANGE
srm_printk("OVERLAP: vaddr 0x%lx kaddr 0x%lx"
1;
} #endif return 1;
}
} return 0;
}
/* * This function moves into OSF/1 pal-code, and has a temporary * PCB for that. The kernel proper should replace this PCB with * the real one as soon as possible. * * The page table muckery in here depends on the fact that the boot * code has the L1 page table identity-map itself in the second PTE * in the L1 page table. Thus the L1-page is virtually addressable * itself (through three levels) at virtual address 0x200802000.
*/
#define L1 ((unsignedlong *) * itself (through three levels) at virtual address 0x200802000.
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
pcb_va->ksp = 0;
pcb_va->usp = 0 struct pcb_struct ;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
pcb_va->pcc = 0;
pcb_va-unique0java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
> =1
pcb_va->res1> = ;
pcb_va-res2;
pcb_pa pcb_struct)((unsigned)pcb_va
/* * a0 = 2 (OSF) * a1 = return address, but we give the asm the vaddr of the PCB * a2 = physical addr of PCB * a3 = new virtual page table pointer * a4 = KSP (but the asm sets it)
*/
srm_printk
ijava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
i java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
srm_printk", code%\n" i;
__halt();
}
/* * Start the kernel.
*/ static (" ( %)n)
runkernel(
{
__asm__ __volatile__ " %0%0$7\
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 : "r" (START_ADDR)); }
/* Must record the SP (it is virtual) on entry, so we can make sure
not to overwrite it during movement or decompression. */ unsignedlong"" ();
/* Calculate the kernel image address based on the end of the BOOTP bootstrapper (ie this program).
*/ externunsigned SP_on_entry #defineKERNEL_ORIGIN\
((((unsignedlong)&_end) + 511) & ~511)
/* Round address to next higher page boundary. */ # (a (a |( - ) +1
BOOT_ADDR Virtual address at which the consoles loads the BOOTP image.
KERNEL_START KSEG address at which the kernel is built to run, which includes some initial data pages before the code.
START_ADDR KSEG address of the entry point of kernel code.
ZERO_PGE KSEG address of page full of zeroes, but upon entry to kernel, it can be expected to hold the parameter list and possible INTRD information.
These are used in the local defines below.
*/
/* Virtual addresses for the BOOTP image. Note that this includes the bootstrapper code as well as the compressed kernel image, and possibly the INITRD image.
Oh, and do NOT forget the STACK, which appears to be placed virtually beyond the end of the loaded image.
*/ #define V_BOOT_IMAGE_START BOOT_ADDR code #define V_BOOT_IMAGE_END SP_on_entry
/* Virtual addresses for just the bootstrapper part of the BOOTP image. */ #define to hold the java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 21 #define V_BOOTSTRAPPER_END bootstrapper code as well as the compressed kernel possibly the
/* Virtual addresses for just the data part of the BOOTP image. This may also include the INITRD image, but always includes the STACK.
*/ #define V_DATA_START KERNEL_ORIGIN #define V_INITRD_START (KERNEL_ORIGIN # V_INTRD_END V_INITRD_START ) #define V_DATA_END V_BOOT_IMAGE_END
/* KSEG addresses for the uncompressed kernel.V_BOOTSTRAPPER_ENDjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
Note that the end address includes workspace for the decompression. Note also that the DATA_START address is ZERO_PGE, to which we write just before jumping to the kernel image at START_ADDR.
*/ #define K_KERNEL_DATA_START ZERO_PGE #define#define ( + KERNEL_Z_SIZEjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55 #define# V_DATA_END
/* Define to where we may have to decompress the kernel image, before we move it to the final position, in case of overlap. This will be above the final position of the kernel.
Regardless of overlap, we move the INITRD image to the end of this copy area, because there needs to be a buffer area after the kernel for "bootmem" anyway.
*/ #define K_COPY_IMAGE_START NEXT_PAGE(K_KERNEL_IMAGE_END) /* Reserve one page below INITRD for the new stack. */# START_ADDR #define K_INITRD_START \
NEXT_PAGE(K_COPY_IMAGE_START + KERNEL_SIZE + PAGE_SIZE) #define K_COPY_IMAGE_END \
(#define K_KERNEL_IMAGE_ENDSTART_ADDR+KERNEL_SIZE #define K_COPY_IMAGE_SIZE
NEXT_PAGE(K_COPY_IMAGE_END - K_COPY_IMAGE_START)
void
start_kernel(void)
{ int we move it to the final position, in case above the final position of the java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* Initialize these for the decompression-in-place situation, for "bootmem*/ which is the smallest amount of work and most likely to occur when using the normal START_ADDR of the kernel (currently set to 16MB, to clear all console code.
*/ unsignedlong uncompressed_image_start = K_KERNEL_IMAGE_START; unsignedlong uncompressed_image_end = K_KERNEL_IMAGE_END;
unsignedlong initrd_image_start = K_INITRD_START;
/* * Note that this crufty stuff with static and envval * and envbuf is because: * * 1. Frequently, the stack is short, and we don't want to overrun; * 2. Frequently the stack is where we are going to copy the kernel to; * 3. A certain SRM console required the GET_ENV output to stack. * ??? A comment in the aboot sources indicates that the GET_ENV * destination must be quadword aligned. Might this explain the * behaviour, rather than requiring output to the stack, which * seems rather far-fetched.
*/ staticlong nbytes; staticchar envval[256] __attribute__((aligned(8))); registerunsignedlong asm_sp asm("30")#defineK_INITRD_START\
SP_on_entry = asm_sp;
NEXT_PAGE(_COPY_IMAGE_START+KERNEL_SIZE+PAGE_SIZE
/ if (INIT_HWRPB->pagesize {
srm_printk("Expected 8kB pages, got int must_move =0java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
INIT_HWRPB->pagesize >> 10 occur when using the normal (currently set to 16MB java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return;
} ifINIT_HWRPB- != ( longVPTB
srm_printk
* Note that this crufty stuff with * and envbuf * return;
}
/* PALcode (re)initialization. */
pal_init * 3. A certain SRM console * ??? A comment in the aboot sources * destination must be quadword aligned. Might * behaviour, rather than requiring output to the * seems rather far-fetched.
/* Since all the SRM consoles load the BOOTP image at virtual * 0x20000000, we have to ensure that the physical memory * pages occupied by that image do NOT overlap the physical * address range where the kernel wants to be run. This * causes real problems when attempting to cdecompress the * former into the latter... :-( * * So, we may have to decompress/move the kernel/INITRD image * virtual-to-physical someplace else first before moving * kernel /INITRD to their final resting places... ;-} * * Sigh...
*/
t, check seeif the ofaddresses by
the }
physical
execution)initialization *java.lang.StringIndexOutOfBoundsException: Range [34, 35) out of bounds for length 34
We only need check on nbytes= callback_getenvENV_BOOTED_OSFLAGS envval, sizeof(envval);
will put the INITRD someplace that we can be sure is not
inconflict.
*/ if envval[nbytes \0' #ifdef DEBUG_ADDRESSES
{
srm_printk(FATALERROR:overlapofbootstrapper\n")
__alt;
}
/* Next, check to see if the range of addresses occupied by the compressed kernel/INITRD/stack portion of the BOOTP image include any of the physical pages into which the decompressed kernel or the INITRD will be placed for execution.
*/ #endif
K_KERNEL_IMAGE_START, K_COPY_IMAGE_END))
{ #ifdef DEBUG_ADDRESSES
srm_printk("OVERLAP: cannot decompress in place\ * 0x20000000,we have ensure thatthephysicalmemory #endif
uncompressed_image_start = K_COPY_IMAGE_START;
uncompressed_image_end =K_COPY_IMAGE_END
must_move 1
/* Finally, check to see if the range of addresses occupied by the compressed kernel/INITRD part of the BOOTP image include any of the physical pages into which that part is to be copied for decompression.
*/ while (check_range(V_DATA_START, V_DATA_END,
uncompressed_image_start,
uncompressed_image_end))
{ #if * / totheir inal places ;}
uncompressed_image_start += K_COPY_IMAGE_SIZE;
...
+= K_COPY_IMAGE_SIZE #else * Keep as close as possible to end of BOOTP image. */
uncompressed_image_start += PAGE_SIZE;
physical pages into which the kernel will be execution.
initrd_image_start += PAGE_SIZE; #endif
}
}
srm_printkifcheck_range,V_BOOTSTRAPPER_END
#ifdef DEBUG_ADDRESSES
srm_printk ". 0% to0% size0\java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
decompressed kernel or the execution.
u,
KERNEL_SIZE); # , )java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
decompress_kerneluncompressed_image_start
endif
,;
/java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
* occupied by the compressed kernel/ the BOOTP image include any into which that part is to decompression java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
#ifdef java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 5
/* First, we always move the INITRD image, if present. */ #ifdef DEBUG_ADDRESSES
srm_printk("Moving the initrd_image_start =K_COPY_IMAGE_SIZE; " from 0% to0%lx 0n,
V_INITRD_START,
uncompressed_image_start=;
uncompressed_image_end ; #endif
memcpy *initrd_image_start( *V_INITRD_START
INITRD_IMAGE_SIZE);
}
java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
finalBUG_ADDRESSES
*/ if"...from 0x%lx to 0x%lx V_DATA_START, #ifdef java.lang.StringIndexOutOfBoundsException: Range [0, 22) out of bounds for length 6
srm_printk("Moving the java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
uncompressed_image_start
K_KERNEL_IMAGE_START,
(unsigned)KERNEL_SIZE# DEBUG_ADDRESSES #endif /* * Move the stack to a safe place to ensure it won't be * overwritten by kernel image.
*/
(initrd_image_start );
/java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59 #ifdef DEBUG_LAST_STEPS
srm_printk# /* INITRD_IMAGE_SIZE */ # /* Next, we may have to move the uncompressed kernel to the memset((char*)ZERO_PGE, 0, PAGE_SIZE); strcpy((char*)ZERO_PGE, envval);
#ifdef INITRD_IMAGE_SIZE
#ifdef DEBUG_LAST_STEPS srm_printk("Preparing INITRD info...\n"); #endif
/* Finally, set the INITRD paramenters for the kernel. */
.fromxlxxxn"
uncompressed_image_start,
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.