diff options
Diffstat (limited to 'arch/riscv/include/asm/alternative-macros.h')
| -rw-r--r-- | arch/riscv/include/asm/alternative-macros.h | 155 |
1 files changed, 58 insertions, 97 deletions
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h index ec2f3f1b836f..721ec275ce57 100644 --- a/arch/riscv/include/asm/alternative-macros.h +++ b/arch/riscv/include/asm/alternative-macros.h @@ -6,18 +6,18 @@ #ifdef __ASSEMBLY__ -.macro ALT_ENTRY oldptr newptr vendor_id errata_id new_len - RISCV_PTR \oldptr - RISCV_PTR \newptr - REG_ASM \vendor_id - REG_ASM \new_len - .word \errata_id +.macro ALT_ENTRY oldptr newptr vendor_id patch_id new_len + .4byte \oldptr - . + .4byte \newptr - . + .2byte \vendor_id + .2byte \new_len + .4byte \patch_id .endm -.macro ALT_NEW_CONTENT vendor_id, errata_id, enable = 1, new_c : vararg +.macro ALT_NEW_CONTENT vendor_id, patch_id, enable = 1, new_c .if \enable .pushsection .alternative, "a" - ALT_ENTRY 886b, 888f, \vendor_id, \errata_id, 889f - 888f + ALT_ENTRY 886b, 888f, \vendor_id, \patch_id, 889f - 888f .popsection .subsection 1 888 : @@ -33,7 +33,7 @@ .endif .endm -.macro __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, enable +.macro ALTERNATIVE_CFG old_c, new_c, vendor_id, patch_id, enable 886 : .option push .option norvc @@ -41,50 +41,34 @@ \old_c .option pop 887 : - ALT_NEW_CONTENT \vendor_id, \errata_id, \enable, \new_c + ALT_NEW_CONTENT \vendor_id, \patch_id, \enable, "\new_c" .endm -#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \ - __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k) - -.macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \ - new_c_2, vendor_id_2, errata_id_2, enable_2 -886 : - .option push - .option norvc - .option norelax - \old_c - .option pop -887 : - ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1 - ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2 +.macro ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, patch_id_1, enable_1, \ + new_c_2, vendor_id_2, patch_id_2, enable_2 + ALTERNATIVE_CFG "\old_c", "\new_c_1", \vendor_id_1, \patch_id_1, \enable_1 + ALT_NEW_CONTENT \vendor_id_2, \patch_id_2, \enable_2, "\new_c_2" .endm -#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - CONFIG_k_1, \ - new_c_2, vendor_id_2, errata_id_2, \ - CONFIG_k_2) \ - __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, \ - IS_ENABLED(CONFIG_k_1), \ - new_c_2, vendor_id_2, errata_id_2, \ - IS_ENABLED(CONFIG_k_2) +#define __ALTERNATIVE_CFG(...) ALTERNATIVE_CFG __VA_ARGS__ +#define __ALTERNATIVE_CFG_2(...) ALTERNATIVE_CFG_2 __VA_ARGS__ #else /* !__ASSEMBLY__ */ #include <asm/asm.h> #include <linux/stringify.h> -#define ALT_ENTRY(oldptr, newptr, vendor_id, errata_id, newlen) \ - RISCV_PTR " " oldptr "\n" \ - RISCV_PTR " " newptr "\n" \ - REG_ASM " " vendor_id "\n" \ - REG_ASM " " newlen "\n" \ - ".word " errata_id "\n" +#define ALT_ENTRY(oldptr, newptr, vendor_id, patch_id, newlen) \ + ".4byte ((" oldptr ") - .) \n" \ + ".4byte ((" newptr ") - .) \n" \ + ".2byte " vendor_id "\n" \ + ".2byte " newlen "\n" \ + ".4byte " patch_id "\n" -#define ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c) \ +#define ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) \ ".if " __stringify(enable) " == 1\n" \ ".pushsection .alternative, \"a\"\n" \ - ALT_ENTRY("886b", "888f", __stringify(vendor_id), __stringify(errata_id), "889f - 888f") \ + ALT_ENTRY("886b", "888f", __stringify(vendor_id), __stringify(patch_id), "889f - 888f") \ ".popsection\n" \ ".subsection 1\n" \ "888 :\n" \ @@ -99,7 +83,7 @@ ".previous\n" \ ".endif\n" -#define __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, enable) \ +#define __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, enable) \ "886 :\n" \ ".option push\n" \ ".option norvc\n" \ @@ -107,84 +91,65 @@ old_c "\n" \ ".option pop\n" \ "887 :\n" \ - ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c) + ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) -#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \ - __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)) - -#define __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - enable_1, \ - new_c_2, vendor_id_2, errata_id_2, \ - enable_2) \ - "886 :\n" \ - ".option push\n" \ - ".option norvc\n" \ - ".option norelax\n" \ - old_c "\n" \ - ".option pop\n" \ - "887 :\n" \ - ALT_NEW_CONTENT(vendor_id_1, errata_id_1, enable_1, new_c_1) \ - ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2) - -#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - CONFIG_k_1, \ - new_c_2, vendor_id_2, errata_id_2, \ - CONFIG_k_2) \ - __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - IS_ENABLED(CONFIG_k_1), \ - new_c_2, vendor_id_2, errata_id_2, \ - IS_ENABLED(CONFIG_k_2)) +#define __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1, \ + new_c_2, vendor_id_2, patch_id_2, enable_2) \ + __ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \ + ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2) #endif /* __ASSEMBLY__ */ +#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, CONFIG_k) \ + __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) + +#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, CONFIG_k_1, \ + new_c_2, vendor_id_2, patch_id_2, CONFIG_k_2) \ + __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \ + new_c_2, vendor_id_2, patch_id_2, IS_ENABLED(CONFIG_k_2)) + #else /* CONFIG_RISCV_ALTERNATIVE */ #ifdef __ASSEMBLY__ -.macro __ALTERNATIVE_CFG old_c +.macro ALTERNATIVE_CFG old_c \old_c .endm -#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \ - __ALTERNATIVE_CFG old_c +#define _ALTERNATIVE_CFG(old_c, ...) \ + ALTERNATIVE_CFG old_c -#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - CONFIG_k_1, \ - new_c_2, vendor_id_2, errata_id_2, \ - CONFIG_k_2) \ - __ALTERNATIVE_CFG old_c +#define _ALTERNATIVE_CFG_2(old_c, ...) \ + ALTERNATIVE_CFG old_c #else /* !__ASSEMBLY__ */ -#define __ALTERNATIVE_CFG(old_c) \ +#define __ALTERNATIVE_CFG(old_c) \ old_c "\n" -#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \ +#define _ALTERNATIVE_CFG(old_c, ...) \ __ALTERNATIVE_CFG(old_c) -#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \ - CONFIG_k_1, \ - new_c_2, vendor_id_2, errata_id_2, \ - CONFIG_k_2) \ - __ALTERNATIVE_CFG(old_c) +#define _ALTERNATIVE_CFG_2(old_c, ...) \ + __ALTERNATIVE_CFG(old_c) #endif /* __ASSEMBLY__ */ #endif /* CONFIG_RISCV_ALTERNATIVE */ /* * Usage: - * ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k) + * ALTERNATIVE(old_content, new_content, vendor_id, patch_id, CONFIG_k) * in the assembly code. Otherwise, - * asm(ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k)); + * asm(ALTERNATIVE(old_content, new_content, vendor_id, patch_id, CONFIG_k)); * * old_content: The old content which is probably replaced with new content. * new_content: The new content. * vendor_id: The CPU vendor ID. - * errata_id: The errata ID. - * CONFIG_k: The Kconfig of this errata. When Kconfig is disabled, the old - * content will alwyas be executed. + * patch_id: The patch ID (erratum ID or cpufeature ID). + * CONFIG_k: The Kconfig of this patch ID. When Kconfig is disabled, the old + * content will always be executed. */ -#define ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k) \ - _ALTERNATIVE_CFG(old_content, new_content, vendor_id, errata_id, CONFIG_k) +#define ALTERNATIVE(old_content, new_content, vendor_id, patch_id, CONFIG_k) \ + _ALTERNATIVE_CFG(old_content, new_content, vendor_id, patch_id, CONFIG_k) /* * A vendor wants to replace an old_content, but another vendor has used @@ -193,13 +158,9 @@ * on the following sample code and then replace ALTERNATIVE() with * ALTERNATIVE_2() to append its customized content. */ -#define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, \ - errata_id_1, CONFIG_k_1, \ - new_content_2, vendor_id_2, \ - errata_id_2, CONFIG_k_2) \ - _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, \ - errata_id_1, CONFIG_k_1, \ - new_content_2, vendor_id_2, \ - errata_id_2, CONFIG_k_2) +#define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \ + new_content_2, vendor_id_2, patch_id_2, CONFIG_k_2) \ + _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \ + new_content_2, vendor_id_2, patch_id_2, CONFIG_k_2) #endif |