arch/tile: support kexec() for tilegx

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 0 insertions, 280 deletions

diff --git a/arch/tile/kernel/relocate_kernel.S b/arch/tile/kernel/relocate_kernel.S
deleted file mode 100644
index 010b418515f8..000000000000
--- a/arch/tile/kernel/relocate_kernel.S
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- *
- * copy new kernel into place and then call hv_reexec
- *
- */
-
-#include <linux/linkage.h>
-#include <arch/chip.h>
-#include <asm/page.h>
-#include <hv/hypervisor.h>
-
-#define ___hvb	MEM_SV_INTRPT + HV_GLUE_START_CPA
-
-#define ___hv_dispatch(f) (___hvb + (HV_DISPATCH_ENTRY_SIZE * f))
-
-#define ___hv_console_putc ___hv_dispatch(HV_DISPATCH_CONSOLE_PUTC)
-#define ___hv_halt         ___hv_dispatch(HV_DISPATCH_HALT)
-#define ___hv_reexec       ___hv_dispatch(HV_DISPATCH_REEXEC)
-#define ___hv_flush_remote ___hv_dispatch(HV_DISPATCH_FLUSH_REMOTE)
-
-#undef RELOCATE_NEW_KERNEL_VERBOSE
-
-STD_ENTRY(relocate_new_kernel)
-
-	move	r30, r0		/* page list */
-	move	r31, r1		/* address of page we are on */
-	move	r32, r2		/* start address of new kernel */
-
-	shri	r1, r1, PAGE_SHIFT
-	addi	r1, r1, 1
-	shli	sp, r1, PAGE_SHIFT
-	addi	sp, sp, -8
-	/* we now have a stack (whether we need one or not) */
-
-	moveli	r40, lo16(___hv_console_putc)
-	auli	r40, r40, ha16(___hv_console_putc)
-
-#ifdef RELOCATE_NEW_KERNEL_VERBOSE
-	moveli	r0, 'r'
-	jalr	r40
-
-	moveli	r0, '_'
-	jalr	r40
-
-	moveli	r0, 'n'
-	jalr	r40
-
-	moveli	r0, '_'
-	jalr	r40
-
-	moveli	r0, 'k'
-	jalr	r40
-
-	moveli	r0, '\n'
-	jalr	r40
-#endif
-
-	/*
-	 * Throughout this code r30 is pointer to the element of page
-	 * list we are working on.
-	 *
-	 * Normally we get to the next element of the page list by
-	 * incrementing r30 by four.  The exception is if the element
-	 * on the page list is an IND_INDIRECTION in which case we use
-	 * the element with the low bits masked off as the new value
-	 * of r30.
-	 *
-	 * To get this started, we need the value passed to us (which
-	 * will always be an IND_INDIRECTION) in memory somewhere with
-	 * r30 pointing at it.  To do that, we push the value passed
-	 * to us on the stack and make r30 point to it.
-	 */
-
-	sw	sp, r30
-	move	r30, sp
-	addi	sp, sp, -8
-
-#if CHIP_HAS_CBOX_HOME_MAP()
-	/*
-	 * On TILEPro, we need to flush all tiles' caches, since we may
-	 * have been doing hash-for-home caching there.  Note that we
-	 * must do this _after_ we're completely done modifying any memory
-	 * other than our output buffer (which we know is locally cached).
-	 * We want the caches to be fully clean when we do the reexec,
-	 * because the hypervisor is going to do this flush again at that
-	 * point, and we don't want that second flush to overwrite any memory.
-	 */
-	{
-	 move	r0, zero	 /* cache_pa */
-	 move	r1, zero
-	}
-	{
-	 auli	r2, zero, ha16(HV_FLUSH_EVICT_L2) /* cache_control */
-	 movei	r3, -1		 /* cache_cpumask; -1 means all client tiles */
-	}
-	{
-	 move	r4, zero	 /* tlb_va */
-	 move	r5, zero	 /* tlb_length */
-	}
-	{
-	 move	r6, zero	 /* tlb_pgsize */
-	 move	r7, zero	 /* tlb_cpumask */
-	}
-	{
-	 move	r8, zero	 /* asids */
-	 moveli	r20, lo16(___hv_flush_remote)
-	}
-	{
-	 move	r9, zero	 /* asidcount */
-	 auli	r20, r20, ha16(___hv_flush_remote)
-	}
-
-	jalr	r20
-#endif
-
-	/* r33 is destination pointer, default to zero */
-
-	moveli	r33, 0
-
-.Lloop:	lw	r10, r30
-
-	andi	r9, r10, 0xf	/* low 4 bits tell us what type it is */
-	xor	r10, r10, r9	/* r10 is now value with low 4 bits stripped */
-
-	seqi	r0, r9, 0x1	/* IND_DESTINATION */
-	bzt	r0, .Ltry2
-
-	move	r33, r10
-
-#ifdef RELOCATE_NEW_KERNEL_VERBOSE
-	moveli	r0, 'd'
-	jalr	r40
-#endif
-
-	addi	r30, r30, 4
-	j	.Lloop
-
-.Ltry2:
-	seqi	r0, r9, 0x2	/* IND_INDIRECTION */
-	bzt	r0, .Ltry4
-
-	move	r30, r10
-
-#ifdef RELOCATE_NEW_KERNEL_VERBOSE
-	moveli	r0, 'i'
-	jalr	r40
-#endif
-
-	j	.Lloop
-
-.Ltry4:
-	seqi	r0, r9, 0x4	/* IND_DONE */
-	bzt	r0, .Ltry8
-
-	mf
-
-#ifdef RELOCATE_NEW_KERNEL_VERBOSE
-	moveli	r0, 'D'
-	jalr	r40
-	moveli	r0, '\n'
-	jalr	r40
-#endif
-
-	move	r0, r32
-	moveli	r1, 0		/* arg to hv_reexec is 64 bits */
-
-	moveli	r41, lo16(___hv_reexec)
-	auli	r41, r41, ha16(___hv_reexec)
-
-	jalr	r41
-
-	/* we should not get here */
-
-	moveli	r0, '?'
-	jalr	r40
-	moveli	r0, '\n'
-	jalr	r40
-
-	j	.Lhalt
-
-.Ltry8:	seqi	r0, r9, 0x8	/* IND_SOURCE */
-	bz	r0, .Lerr	/* unknown type */
-
-	/* copy page at r10 to page at r33 */
-
-	move	r11, r33
-
-	moveli	r0, lo16(PAGE_SIZE)
-	auli	r0, r0, ha16(PAGE_SIZE)
-	add	r33, r33, r0
-
-	/* copy word at r10 to word at r11 until r11 equals r33 */
-
-	/* We know page size must be multiple of 16, so we can unroll
-	 * 16 times safely without any edge case checking.
-	 *
-	 * Issue a flush of the destination every 16 words to avoid
-	 * incoherence when starting the new kernel.  (Now this is
-	 * just good paranoia because the hv_reexec call will also
-	 * take care of this.)
-	 */
-
-1:
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0; addi	r11, r11, 4 }
-	{ lw	r0, r10; addi	r10, r10, 4 }
-	{ sw	r11, r0 }
-	{ flush r11    ; addi	r11, r11, 4 }
-
-	seq	r0, r33, r11
-	bzt	r0, 1b
-
-#ifdef RELOCATE_NEW_KERNEL_VERBOSE
-	moveli	r0, 's'
-	jalr	r40
-#endif
-
-	addi	r30, r30, 4
-	j	.Lloop
-
-
-.Lerr:	moveli	r0, 'e'
-	jalr	r40
-	moveli	r0, 'r'
-	jalr	r40
-	moveli	r0, 'r'
-	jalr	r40
-	moveli	r0, '\n'
-	jalr	r40
-.Lhalt:
-	moveli	r41, lo16(___hv_halt)
-	auli	r41, r41, ha16(___hv_halt)
-
-	jalr	r41
-	STD_ENDPROC(relocate_new_kernel)
-
-	.section .rodata,"a"
-
-	.globl relocate_new_kernel_size
-relocate_new_kernel_size:
-	.long .Lend_relocate_new_kernel - relocate_new_kernel