diff options
Diffstat (limited to 'arch/arm/boot/compressed')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head-shark.S | 140 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 9 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/ofw-shark.c | 260 |
4 files changed, 3 insertions, 410 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 7ac1610252ba..e7190bb5998e 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -44,10 +44,6 @@ ifeq ($(CONFIG_ARCH_ACORN),y) OBJS += ll_char_wr.o font.o endif -ifeq ($(CONFIG_ARCH_SHARK),y) -OBJS += head-shark.o ofw-shark.o -endif - ifeq ($(CONFIG_ARCH_SA1100),y) OBJS += head-sa1100.o endif diff --git a/arch/arm/boot/compressed/head-shark.S b/arch/arm/boot/compressed/head-shark.S deleted file mode 100644 index 92b56897ed64..000000000000 --- a/arch/arm/boot/compressed/head-shark.S +++ /dev/null @@ -1,140 +0,0 @@ -/* The head-file for the Shark - * by Alexander Schulz - * - * Does the following: - * - get the memory layout from firmware. This can only be done as long as the mmu - * is still on. - * - switch the mmu off, so we have physical addresses - * - copy the kernel to 0x08508000. This is done to have a fixed address where the - * C-parts (misc.c) are executed. This address must be known at compile-time, - * but the load-address of the kernel depends on how much memory is installed. - * - Jump to this location. - * - Set r8 with 0, r7 with the architecture ID for head.S - */ - -#include <linux/linkage.h> - -#include <asm/assembler.h> - - .section ".start", "ax" - - .arch armv4 - b __beginning - -__ofw_data: .long 0 @ the number of memory blocks - .space 128 @ (startaddr,size) ... - .space 128 @ bootargs - .align - -__beginning: mov r4, r0 @ save the entry to the firmware - - mov r0, #0xC0 @ disable irq and fiq - mov r1, r0 - mrs r3, cpsr - bic r2, r3, r0 - eor r2, r2, r1 - msr cpsr_c, r2 - - mov r0, r4 @ get the Memory layout from firmware - adr r1, __ofw_data - add r2, r1, #4 - mov lr, pc - b ofw_init - mov r1, #0 - - adr r2, __mmu_off @ calculate physical address - sub r2, r2, #0xf0000000 @ openprom maps us at f000 virt, 0e50 phys - adr r0, __ofw_data - ldr r0, [r0, #4] - add r2, r2, r0 - add r2, r2, #0x00500000 - - mrc p15, 0, r3, c1, c0 - bic r3, r3, #0xC @ Write Buffer and DCache - bic r3, r3, #0x1000 @ ICache - mcr p15, 0, r3, c1, c0 @ disabled - - mov r0, #0 - mcr p15, 0, r0, c7, c7 @ flush I,D caches on v4 - mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 - mcr p15, 0, r0, c8, c7 @ flush I,D TLBs on v4 - - bic r3, r3, #0x1 @ MMU - mcr p15, 0, r3, c1, c0 @ disabled - - mov pc, r2 - -__copy_target: .long 0x08507FFC -__copy_end: .long 0x08607FFC - - .word _start - .word __bss_start - - .align -__temp_stack: .space 128 - -__mmu_off: - adr r0, __ofw_data @ read the 1. entry of the memory map - ldr r0, [r0, #4] - orr r0, r0, #0x00600000 - sub r0, r0, #4 - - ldr r1, __copy_end - ldr r3, __copy_target - -/* r0 = 0x0e600000 (current end of kernelcode) - * r3 = 0x08508000 (where it should begin) - * r1 = 0x08608000 (end of copying area, 1MB) - * The kernel is compressed, so 1 MB should be enough. - * copy the kernel to the beginning of physical memory - * We start from the highest address, so we can copy - * from 0x08500000 to 0x08508000 if we have only 8MB - */ - -/* As we get more 2.6-kernels it gets more and more - * uncomfortable to be bound to kernel images of 1MB only. - * So we add a loop here, to be able to copy some more. - * Alexander Schulz 2005-07-17 - */ - - mov r4, #3 @ How many megabytes to copy - - -__MoveCode: sub r4, r4, #1 - -__Copy: ldr r2, [r0], #-4 - str r2, [r1], #-4 - teq r1, r3 - bne __Copy - - /* The firmware maps us in blocks of 1 MB, the next block is - _below_ the last one. So our decrementing source pointer - ist right here, but the destination pointer must be increased - by 2 MB */ - add r1, r1, #0x00200000 - add r3, r3, #0x00100000 - - teq r4, #0 - bne __MoveCode - - - /* and jump to it */ - adr r2, __go_on @ where we want to jump - adr r0, __ofw_data @ read the 1. entry of the memory map - ldr r0, [r0, #4] - sub r2, r2, r0 @ we are mapped add 0e50 now, sub that (-0e00) - sub r2, r2, #0x00500000 @ -0050 - ldr r0, __copy_target @ and add 0850 8000 instead - add r0, r0, #4 - add r2, r2, r0 - mov pc, r2 @ and jump there - -__go_on: - adr sp, __temp_stack - add sp, sp, #128 - adr r0, __ofw_data - mov lr, pc - b create_params - - mov r8, #0 - mov r7, #15 diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 75189f13cf54..066b03480b63 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -135,6 +135,7 @@ start: .word _edata @ zImage end address THUMB( .thumb ) 1: + ARM_BE8( setend be ) @ go BE8 if compiled for BE8 mrs r9, cpsr #ifdef CONFIG_ARM_VIRT_EXT bl __hyp_stub_install @ get into SVC mode, reversibly @@ -699,9 +700,7 @@ __armv4_mmu_cache_on: mrc p15, 0, r0, c1, c0, 0 @ read control reg orr r0, r0, #0x5000 @ I-cache enable, RR cache replacement orr r0, r0, #0x0030 -#ifdef CONFIG_CPU_ENDIAN_BE8 - orr r0, r0, #1 << 25 @ big-endian page tables -#endif + ARM_BE8( orr r0, r0, #1 << 25 ) @ big-endian page tables bl __common_mmu_cache_on mov r0, #0 mcr p15, 0, r0, c8, c7, 0 @ flush I,D TLBs @@ -728,9 +727,7 @@ __armv7_mmu_cache_on: orr r0, r0, #1 << 22 @ U (v6 unaligned access model) @ (needed for ARM1176) #ifdef CONFIG_MMU -#ifdef CONFIG_CPU_ENDIAN_BE8 - orr r0, r0, #1 << 25 @ big-endian page tables -#endif + ARM_BE8( orr r0, r0, #1 << 25 ) @ big-endian page tables mrcne p15, 0, r6, c2, c0, 2 @ read ttb control reg orrne r0, r0, #1 @ MMU enabled movne r1, #0xfffffffd @ domain 0 = client diff --git a/arch/arm/boot/compressed/ofw-shark.c b/arch/arm/boot/compressed/ofw-shark.c deleted file mode 100644 index 465c54b6b128..000000000000 --- a/arch/arm/boot/compressed/ofw-shark.c +++ /dev/null @@ -1,260 +0,0 @@ -/* - * linux/arch/arm/boot/compressed/ofw-shark.c - * - * by Alexander Schulz - * - * This file is used to get some basic information - * about the memory layout of the shark we are running - * on. Memory is usually divided in blocks a 8 MB. - * And bootargs are copied from OpenFirmware. - */ - - -#include <linux/kernel.h> -#include <linux/types.h> -#include <asm/setup.h> -#include <asm/page.h> - - -asmlinkage void -create_params (unsigned long *buffer) -{ - /* Is there a better address? Also change in mach-shark/core.c */ - struct tag *tag = (struct tag *) 0x08003000; - int j,i,m,k,nr_banks,size; - unsigned char *c; - - k = 0; - - /* Head of the taglist */ - tag->hdr.tag = ATAG_CORE; - tag->hdr.size = tag_size(tag_core); - tag->u.core.flags = 1; - tag->u.core.pagesize = PAGE_SIZE; - tag->u.core.rootdev = 0; - - /* Build up one tagged block for each memory region */ - size=0; - nr_banks=(unsigned int) buffer[0]; - for (j=0;j<nr_banks;j++){ - /* search the lowest address and put it into the next entry */ - /* not a fast sort algorithm, but there are at most 8 entries */ - /* and this is used only once anyway */ - m=0xffffffff; - for (i=0;i<(unsigned int) buffer[0];i++){ - if (buffer[2*i+1]<m) { - m=buffer[2*i+1]; - k=i; - } - } - - tag = tag_next(tag); - tag->hdr.tag = ATAG_MEM; - tag->hdr.size = tag_size(tag_mem32); - tag->u.mem.size = buffer[2*k+2]; - tag->u.mem.start = buffer[2*k+1]; - - size += buffer[2*k+2]; - - buffer[2*k+1]=0xffffffff; /* mark as copied */ - } - - /* The command line */ - tag = tag_next(tag); - tag->hdr.tag = ATAG_CMDLINE; - - c=(unsigned char *)(&buffer[34]); - j=0; - while (*c) tag->u.cmdline.cmdline[j++]=*c++; - - tag->u.cmdline.cmdline[j]=0; - tag->hdr.size = (j + 7 + sizeof(struct tag_header)) >> 2; - - /* Hardware revision */ - tag = tag_next(tag); - tag->hdr.tag = ATAG_REVISION; - tag->hdr.size = tag_size(tag_revision); - tag->u.revision.rev = ((unsigned char) buffer[33])-'0'; - - /* End of the taglist */ - tag = tag_next(tag); - tag->hdr.tag = 0; - tag->hdr.size = 0; -} - - -typedef int (*ofw_handle_t)(void *); - -/* Everything below is called with a wrong MMU setting. - * This means: no string constants, no initialization of - * arrays, no global variables! This is ugly but I didn't - * want to write this in assembler :-) - */ - -int -of_decode_int(const unsigned char *p) -{ - unsigned int i = *p++ << 8; - i = (i + *p++) << 8; - i = (i + *p++) << 8; - return (i + *p); -} - -int -OF_finddevice(ofw_handle_t openfirmware, char *name) -{ - unsigned int args[8]; - char service[12]; - - service[0]='f'; - service[1]='i'; - service[2]='n'; - service[3]='d'; - service[4]='d'; - service[5]='e'; - service[6]='v'; - service[7]='i'; - service[8]='c'; - service[9]='e'; - service[10]='\0'; - - args[0]=(unsigned int)service; - args[1]=1; - args[2]=1; - args[3]=(unsigned int)name; - - if (openfirmware(args) == -1) - return -1; - return args[4]; -} - -int -OF_getproplen(ofw_handle_t openfirmware, int handle, char *prop) -{ - unsigned int args[8]; - char service[12]; - - service[0]='g'; - service[1]='e'; - service[2]='t'; - service[3]='p'; - service[4]='r'; - service[5]='o'; - service[6]='p'; - service[7]='l'; - service[8]='e'; - service[9]='n'; - service[10]='\0'; - - args[0] = (unsigned int)service; - args[1] = 2; - args[2] = 1; - args[3] = (unsigned int)handle; - args[4] = (unsigned int)prop; - - if (openfirmware(args) == -1) - return -1; - return args[5]; -} - -int -OF_getprop(ofw_handle_t openfirmware, int handle, char *prop, void *buf, unsigned int buflen) -{ - unsigned int args[8]; - char service[8]; - - service[0]='g'; - service[1]='e'; - service[2]='t'; - service[3]='p'; - service[4]='r'; - service[5]='o'; - service[6]='p'; - service[7]='\0'; - - args[0] = (unsigned int)service; - args[1] = 4; - args[2] = 1; - args[3] = (unsigned int)handle; - args[4] = (unsigned int)prop; - args[5] = (unsigned int)buf; - args[6] = buflen; - - if (openfirmware(args) == -1) - return -1; - return args[7]; -} - -asmlinkage void ofw_init(ofw_handle_t o, int *nomr, int *pointer) -{ - int phandle,i,mem_len,buffer[32]; - char temp[15]; - - temp[0]='/'; - temp[1]='m'; - temp[2]='e'; - temp[3]='m'; - temp[4]='o'; - temp[5]='r'; - temp[6]='y'; - temp[7]='\0'; - - phandle=OF_finddevice(o,temp); - - temp[0]='r'; - temp[1]='e'; - temp[2]='g'; - temp[3]='\0'; - - mem_len = OF_getproplen(o,phandle, temp); - OF_getprop(o,phandle, temp, buffer, mem_len); - *nomr=mem_len >> 3; - - for (i=0; i<=mem_len/4; i++) pointer[i]=of_decode_int((const unsigned char *)&buffer[i]); - - temp[0]='/'; - temp[1]='c'; - temp[2]='h'; - temp[3]='o'; - temp[4]='s'; - temp[5]='e'; - temp[6]='n'; - temp[7]='\0'; - - phandle=OF_finddevice(o,temp); - - temp[0]='b'; - temp[1]='o'; - temp[2]='o'; - temp[3]='t'; - temp[4]='a'; - temp[5]='r'; - temp[6]='g'; - temp[7]='s'; - temp[8]='\0'; - - mem_len = OF_getproplen(o,phandle, temp); - OF_getprop(o,phandle, temp, buffer, mem_len); - if (mem_len > 128) mem_len=128; - for (i=0; i<=mem_len/4; i++) pointer[i+33]=buffer[i]; - pointer[i+33]=0; - - temp[0]='/'; - temp[1]='\0'; - phandle=OF_finddevice(o,temp); - temp[0]='b'; - temp[1]='a'; - temp[2]='n'; - temp[3]='n'; - temp[4]='e'; - temp[5]='r'; - temp[6]='-'; - temp[7]='n'; - temp[8]='a'; - temp[9]='m'; - temp[10]='e'; - temp[11]='\0'; - mem_len = OF_getproplen(o,phandle, temp); - OF_getprop(o,phandle, temp, buffer, mem_len); - * ((unsigned char *) &pointer[32]) = ((unsigned char *) buffer)[mem_len-2]; -} |