diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-12 12:49:27 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-12 12:49:27 +0200 |
commit | 1389ac4b976abdc0555280dfc1aa2c3abcc19641 (patch) | |
tree | 1ec51aa0b1e33201f6f4f3bebc657f9ec65f8539 /arch/mips/include/asm/sn/mapped_kernel.h | |
parent | 69e13ad56f9e2cd81c4f8bfd6267211c10c14c08 (diff) | |
parent | fd048088306656824958e7783ffcee27e241b361 (diff) |
Merge branch 'linus' into x86/signal
Conflicts:
arch/x86/kernel/signal_64.c
Diffstat (limited to 'arch/mips/include/asm/sn/mapped_kernel.h')
-rw-r--r-- | arch/mips/include/asm/sn/mapped_kernel.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/mips/include/asm/sn/mapped_kernel.h b/arch/mips/include/asm/sn/mapped_kernel.h new file mode 100644 index 00000000000..721496a0bb9 --- /dev/null +++ b/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 */ |