Commit 136dfa5e authored by Linus Walleij's avatar Linus Walleij
Browse files

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: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 272b98c6

arch/arm/Kconfig

+0 −20
Original line number Diff line number Diff line
@@ -824,20 +824,6 @@ config ARCH_EXYNOS 
	help

	  Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)



config ARCH_SHARK

	bool "Shark"

	select ARCH_USES_GETTIMEOFFSET

	select CPU_SA110

	select ISA

	select ISA_DMA

	select NEED_MACH_MEMORY_H

	select PCI

	select VIRT_TO_BUS

	select ZONE_DMA

	help

	  Support for the StrongARM based Digital DNARD machine, also known

	  as "Shark" (<http://www.shark-linux.de/shark.html>).



config ARCH_DAVINCI

	bool "TI DaVinci"

	select ARCH_HAS_HOLES_MEMORYMODEL
@@ -1431,12 +1417,6 @@ config PCI_NANOENGINE 
config PCI_SYSCALL

	def_bool PCI



# Select the host bridge type

config PCI_HOST_VIA82C505

	bool

	depends on PCI && ARCH_SHARK

	default y



config PCI_HOST_ITE8152

	bool

	depends on PCI && MACH_ARMCORE

arch/arm/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -188,7 +188,6 @@ machine-$(CONFIG_ARCH_S5P64X0) += s5p64x0 
machine-$(CONFIG_ARCH_S5PC100)		+= s5pc100

machine-$(CONFIG_ARCH_S5PV210)		+= s5pv210

machine-$(CONFIG_ARCH_SA1100)		+= sa1100

machine-$(CONFIG_ARCH_SHARK)		+= shark

machine-$(CONFIG_ARCH_SHMOBILE) 	+= shmobile

machine-$(CONFIG_ARCH_SHMOBILE_MULTI) 	+= shmobile

machine-$(CONFIG_ARCH_SIRF)		+= prima2

arch/arm/boot/compressed/Makefile

+0 −4
Original line number Diff line number Diff line
@@ -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

arch/arm/boot/compressed/head-shark.S

deleted100644 → 0
+0 −140
Original line number Diff line number Diff line 
/* 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

arch/arm/boot/compressed/ofw-shark.c

deleted100644 → 0
+0 −260
Original line number Diff line number Diff line 
/*

 * 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];

}

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