diff options
author | Linus Walleij <linus.walleij@linaro.org> | 2013-09-03 11:32:24 +0200 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2013-09-17 12:34:36 +0200 |
commit | 136dfa5edae3207422a8b93347eb79e92e07cdfa (patch) | |
tree | dc876da20ecb476cfdfc0a5834c371226aea4f80 /arch/arm/boot | |
parent | 272b98c6455f00884f0350f775c5342358ebb73f (diff) |
ARM: delete mach-shark
The Shark machine sub-architecture (also known as DNARD, the
DIGITAL Network Appliance Reference Design) lacks a maintainer
able to apply and test patches to modernize the architecture.
It is suspected that the current kernel, while it compiles,
does not even boot on this machine. The listed maintainer has
expressed that he will not be able to spend any time on the
maintenance for the coming year.
So let's delete it from the kernel for now. It can always be
resurrected with git revert if maintenance is resumed.
As the VIA82c505 PCI adapter was only used by this
architecture, that gets deleted too.
Cc: arm@kernel.org
Cc: Alexander Schulz <alex@shark-linux.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot')
-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/ofw-shark.c | 260 |
3 files changed, 0 insertions, 404 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/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]; -} |