diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-06 16:24:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-06 16:24:34 -0700 |
| commit | 3cf8ad3394b8675e92a35c438f22341197535531 (patch) | |
| tree | 39c9c5b9465e4f63f6cdf9b767d8046eaf0f3ac7 /arch/x86/include | |
| parent | 66cd55d2b903643cbd019ef97a5305d9428d3865 (diff) | |
| parent | 54e5bc020ce1c959eaa7be18cedb734b6b13745e (diff) | |
Merge branch 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, olpc: Constify an olpc_ofw() arg
x86, olpc: Use pr_debug() for EC commands
x86, olpc: Add comment about implicit optimization barrier
x86, olpc: Add support for calling into OpenFirmware
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/bootparam.h | 11 | ||||
| -rw-r--r-- | arch/x86/include/asm/olpc_ofw.h | 31 |
2 files changed, 41 insertions, 1 deletions
diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h index 6be33d83c716..8e6218550e77 100644 --- a/arch/x86/include/asm/bootparam.h +++ b/arch/x86/include/asm/bootparam.h @@ -70,6 +70,14 @@ struct sys_desc_table { __u8 table[14]; }; +/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */ +struct olpc_ofw_header { + __u32 ofw_magic; /* OFW signature */ + __u32 ofw_version; + __u32 cif_handler; /* callback into OFW */ + __u32 irq_desc_table; +} __attribute__((packed)); + struct efi_info { __u32 efi_loader_signature; __u32 efi_systab; @@ -92,7 +100,8 @@ struct boot_params { __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */ __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */ struct sys_desc_table sys_desc_table; /* 0x0a0 */ - __u8 _pad4[144]; /* 0x0b0 */ + struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */ + __u8 _pad4[128]; /* 0x0c0 */ struct edid_info edid_info; /* 0x140 */ struct efi_info efi_info; /* 0x1c0 */ __u32 alt_mem_k; /* 0x1e0 */ diff --git a/arch/x86/include/asm/olpc_ofw.h b/arch/x86/include/asm/olpc_ofw.h new file mode 100644 index 000000000000..08fde475cb3b --- /dev/null +++ b/arch/x86/include/asm/olpc_ofw.h @@ -0,0 +1,31 @@ +#ifndef _ASM_X86_OLPC_OFW_H +#define _ASM_X86_OLPC_OFW_H + +/* index into the page table containing the entry OFW occupies */ +#define OLPC_OFW_PDE_NR 1022 + +#define OLPC_OFW_SIG 0x2057464F /* aka "OFW " */ + +#ifdef CONFIG_OLPC_OPENFIRMWARE + +/* run an OFW command by calling into the firmware */ +#define olpc_ofw(name, args, res) \ + __olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res) + +extern int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res, + void **res); + +/* determine whether OFW is available and lives in the proper memory */ +extern void olpc_ofw_detect(void); + +/* install OFW's pde permanently into the kernel's pgtable */ +extern void setup_olpc_ofw_pgd(void); + +#else /* !CONFIG_OLPC_OPENFIRMWARE */ + +static inline void olpc_ofw_detect(void) { } +static inline void setup_olpc_ofw_pgd(void) { } + +#endif /* !CONFIG_OLPC_OPENFIRMWARE */ + +#endif /* _ASM_X86_OLPC_OFW_H */ |