diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/mips/include/asm/sn/mapped_kernel.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/mips/include/asm/sn/mapped_kernel.h')
-rw-r--r-- | kernel/arch/mips/include/asm/sn/mapped_kernel.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/arch/mips/include/asm/sn/mapped_kernel.h b/kernel/arch/mips/include/asm/sn/mapped_kernel.h new file mode 100644 index 000000000..401f3b0ee --- /dev/null +++ b/kernel/arch/mips/include/asm/sn/mapped_kernel.h @@ -0,0 +1,54 @@ +/* + * File created by Kanoj Sarcar 06/06/00. + * Copyright 2000 Silicon Graphics, Inc. + */ +#ifndef __ASM_SN_MAPPED_KERNEL_H +#define __ASM_SN_MAPPED_KERNEL_H + +#include <linux/mmzone.h> + +/* + * Note on how mapped kernels work: the text and data section is + * compiled at cksseg segment (LOADADDR = 0xc001c000), and the + * init/setup/data section gets a 16M virtual address bump in the + * ld.script file (so that tlblo0 and tlblo1 maps the sections). + * The vmlinux.64 section addresses are put in the xkseg range + * using the change-addresses makefile option. Use elfdump -of + * on IRIX to see where the sections go. The Origin loader loads + * the two sections contiguously in physical memory. The loader + * sets the entry point into kernel_entry using a xkphys address, + * but instead of using 0xa800000001160000, it uses the address + * 0xa800000000160000, which is where it physically loaded that + * code. So no jumps can be done before we have switched to using + * cksseg addresses. + */ +#include <asm/addrspace.h> + +#define REP_BASE CAC_BASE + +#ifdef CONFIG_MAPPED_KERNEL + +#define MAPPED_ADDR_RO_TO_PHYS(x) (x - REP_BASE) +#define MAPPED_ADDR_RW_TO_PHYS(x) (x - REP_BASE - 16777216) + +#define MAPPED_KERN_RO_PHYSBASE(n) (hub_data(n)->kern_vars.kv_ro_baseaddr) +#define MAPPED_KERN_RW_PHYSBASE(n) (hub_data(n)->kern_vars.kv_rw_baseaddr) + +#define MAPPED_KERN_RO_TO_PHYS(x) \ + ((unsigned long)MAPPED_ADDR_RO_TO_PHYS(x) | \ + MAPPED_KERN_RO_PHYSBASE(get_compact_nodeid())) +#define MAPPED_KERN_RW_TO_PHYS(x) \ + ((unsigned long)MAPPED_ADDR_RW_TO_PHYS(x) | \ + MAPPED_KERN_RW_PHYSBASE(get_compact_nodeid())) + +#else /* CONFIG_MAPPED_KERNEL */ + +#define MAPPED_KERN_RO_TO_PHYS(x) (x - REP_BASE) +#define MAPPED_KERN_RW_TO_PHYS(x) (x - REP_BASE) + +#endif /* CONFIG_MAPPED_KERNEL */ + +#define MAPPED_KERN_RO_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RO_TO_PHYS(x)) +#define MAPPED_KERN_RW_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RW_TO_PHYS(x)) + +#endif /* __ASM_SN_MAPPED_KERNEL_H */ |