From a76096a6571d5389376753c2e18b30a9791fa072 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Thu, 30 May 2013 14:09:18 -0500 Subject: x86, microcode, amd: Refactor functions to prepare for early loading In preparation work for early loading, refactor some common functions that will be shared, and move some struct defines to a common header file. Signed-off-by: Jacob Shin Link: http://lkml.kernel.org/r/1369940959-2077-4-git-send-email-jacob.shin@amd.com Signed-off-by: H. Peter Anvin Cc: Fenghua Yu --- arch/x86/include/asm/microcode_amd.h | 64 ++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/x86/include/asm/microcode_amd.h (limited to 'arch/x86/include/asm/microcode_amd.h') diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h new file mode 100644 index 000000000000..a57d9b75f30b --- /dev/null +++ b/arch/x86/include/asm/microcode_amd.h @@ -0,0 +1,64 @@ +#ifndef _ASM_X86_MICROCODE_AMD_H +#define _ASM_X86_MICROCODE_AMD_H + +#include + +#define UCODE_MAGIC 0x00414d44 +#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000 +#define UCODE_UCODE_TYPE 0x00000001 + +#define SECTION_HDR_SIZE 8 +#define CONTAINER_HDR_SZ 12 + +struct equiv_cpu_entry { + u32 installed_cpu; + u32 fixed_errata_mask; + u32 fixed_errata_compare; + u16 equiv_cpu; + u16 res; +} __attribute__((packed)); + +struct microcode_header_amd { + u32 data_code; + u32 patch_id; + u16 mc_patch_data_id; + u8 mc_patch_data_len; + u8 init_flag; + u32 mc_patch_data_checksum; + u32 nb_dev_id; + u32 sb_dev_id; + u16 processor_rev_id; + u8 nb_rev_id; + u8 sb_rev_id; + u8 bios_api_rev; + u8 reserved1[3]; + u32 match_reg[8]; +} __attribute__((packed)); + +struct microcode_amd { + struct microcode_header_amd hdr; + unsigned int mpb[0]; +}; + +static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table, + unsigned int sig) +{ + int i = 0; + + if (!equiv_cpu_table) + return 0; + + while (equiv_cpu_table[i].installed_cpu != 0) { + if (sig == equiv_cpu_table[i].installed_cpu) + return equiv_cpu_table[i].equiv_cpu; + + i++; + } + return 0; +} + +extern int __apply_microcode_amd(struct microcode_amd *mc_amd); +extern int apply_microcode_amd(int cpu); +extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size); + +#endif /* _ASM_X86_MICROCODE_AMD_H */ -- cgit v1.2.3 From 757885e94a22bcc82beb9b1445c95218cb20ceab Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Thu, 30 May 2013 14:09:19 -0500 Subject: x86, microcode, amd: Early microcode patch loading support for AMD Add early microcode patch loading support for AMD. Signed-off-by: Jacob Shin Link: http://lkml.kernel.org/r/1369940959-2077-5-git-send-email-jacob.shin@amd.com Signed-off-by: H. Peter Anvin Cc: Fenghua Yu --- arch/x86/include/asm/microcode_amd.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'arch/x86/include/asm/microcode_amd.h') diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h index a57d9b75f30b..24254aaa857f 100644 --- a/arch/x86/include/asm/microcode_amd.h +++ b/arch/x86/include/asm/microcode_amd.h @@ -61,4 +61,18 @@ extern int __apply_microcode_amd(struct microcode_amd *mc_amd); extern int apply_microcode_amd(int cpu); extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size); +#ifdef CONFIG_MICROCODE_AMD_EARLY +#ifdef CONFIG_X86_32 +#define MPB_MAX_SIZE PAGE_SIZE +extern u8 __cpuinitdata amd_bsp_mpb[MPB_MAX_SIZE]; +#endif +extern void __init load_ucode_amd_bsp(void); +extern void __cpuinit load_ucode_amd_ap(void); +extern int __init save_microcode_in_initrd_amd(void); +#else +static inline void __init load_ucode_amd_bsp(void) {} +static inline void __cpuinit load_ucode_amd_ap(void) {} +static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; } +#endif + #endif /* _ASM_X86_MICROCODE_AMD_H */ -- cgit v1.2.3 From 6b3389ac21b5e557b957f1497d0ff22bf733e8c3 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Fri, 31 May 2013 01:53:24 -0500 Subject: x86, microcode, amd: Fix warnings and errors on with CONFIG_MICROCODE=m Fix section mismatch warnings on microcode_amd_early. Compile error occurs when CONFIG_MICROCODE=m, change so that early loading depends on microcode_core. Reported-by: Yinghai Lu Reported-by: Borislav Petkov Signed-off-by: Jacob Shin Link: http://lkml.kernel.org/r/20130531150241.GA12006@jshin-Toonie Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/microcode_amd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/include/asm/microcode_amd.h') diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h index 24254aaa857f..c6b043f40271 100644 --- a/arch/x86/include/asm/microcode_amd.h +++ b/arch/x86/include/asm/microcode_amd.h @@ -64,7 +64,7 @@ extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size) #ifdef CONFIG_MICROCODE_AMD_EARLY #ifdef CONFIG_X86_32 #define MPB_MAX_SIZE PAGE_SIZE -extern u8 __cpuinitdata amd_bsp_mpb[MPB_MAX_SIZE]; +extern u8 amd_bsp_mpb[MPB_MAX_SIZE]; #endif extern void __init load_ucode_amd_bsp(void); extern void __cpuinit load_ucode_amd_ap(void); -- cgit v1.2.3 From 148f9bb87745ed45f7a11b2cbd3bc0f017d5d257 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Tue, 18 Jun 2013 18:23:59 -0400 Subject: x86: delete __cpuinit usage from all x86 files The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/x86 uses of the __cpuinit macros from all C files. x86 only had the one __CPUINIT used in assembly files, and it wasn't paired off with a .previous or a __FINIT, so we can delete it directly w/o any corresponding additional change there. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Acked-by: Ingo Molnar Acked-by: Thomas Gleixner Acked-by: H. Peter Anvin Signed-off-by: Paul Gortmaker --- arch/x86/include/asm/microcode_amd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/x86/include/asm/microcode_amd.h') diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h index c6b043f40271..50e5c58ced23 100644 --- a/arch/x86/include/asm/microcode_amd.h +++ b/arch/x86/include/asm/microcode_amd.h @@ -67,11 +67,11 @@ extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size) extern u8 amd_bsp_mpb[MPB_MAX_SIZE]; #endif extern void __init load_ucode_amd_bsp(void); -extern void __cpuinit load_ucode_amd_ap(void); +extern void load_ucode_amd_ap(void); extern int __init save_microcode_in_initrd_amd(void); #else static inline void __init load_ucode_amd_bsp(void) {} -static inline void __cpuinit load_ucode_amd_ap(void) {} +static inline void load_ucode_amd_ap(void) {} static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; } #endif -- cgit v1.2.3