\u3000\u3000linux\u5185\u6838\u4e2d\u7684malta board\u4ee3\u7801\u53ea\u652f\u6301MIPS32R1,MIPS32R2\u548cMIPS64R1\u8fd9\u51e0\u79cd\u67b6\u6784\u7684CPU\uff0c\u5982\u679c\u6211\u60f3\u8981\u652f\u6301MIPS64R2\u600e\u4e48\u529e\uff1f\u76f4\u63a5\u4f7f\u7528-march=mips64r2\u7f16\u8bd1\u662f\u4e0d\u884c\u7684\uff0c\u4f1a\u542f\u52a8\u4e0d\u8d77\u6765\uff0c\u9700\u8981\u5bf9\u5185\u6838\u6253\u4e00\u4e9b\u8865\u4e01\uff0c\u5176\u5b9e\u4e5f\u6bd4\u8f83\u7b80\u5355\uff0c\u6211\u8fd9\u91cc\u5c31\u4e0d\u5e9f\u8bdd\u76f4\u63a5\u8d34patch\u4e86\uff1a<\/p>\n\n\n
---\n arch\/mips\/Kconfig | 7 +++++++\n arch\/mips\/include\/asm\/cpu.h | 2 +-\n arch\/mips\/kernel\/cpu-probe.c | 4 ++++\n arch\/mips\/kernel\/traps.c | 1 +\n 4 files changed, 13 insertions(+), 1 deletion(-)\n\ndiff --git a\/arch\/mips\/Kconfig b\/arch\/mips\/Kconfig\nindex d0570f4..862a9c3 100644\n--- a\/arch\/mips\/Kconfig\n+++ b\/arch\/mips\/Kconfig\n@@ -282,6 +282,7 @@ config MIPS_MALTA\n select SYS_HAS_CPU_MIPS32_R1\n select SYS_HAS_CPU_MIPS32_R2\n select SYS_HAS_CPU_MIPS64_R1\n+ select SYS_HAS_CPU_MIPS64_R2\n select SYS_HAS_CPU_NEVADA\n select SYS_HAS_CPU_RM7000\n select SYS_HAS_EARLY_PRINTK\n@@ -2488,6 +2489,7 @@ config TRAD_SIGNALS\n config MIPS32_COMPAT\n bool \"Kernel support for Linux\/MIPS 32-bit binary compatibility\"\n depends on 64BIT\n+ default y if CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL\n help\n Select this option if you want Linux\/MIPS 32-bit binary\n compatibility. Since all software available for Linux\/MIPS is\n@@ -2507,6 +2509,7 @@ config SYSVIPC_COMPAT\n config MIPS32_O32\n bool \"Kernel support for o32 binaries\"\n depends on MIPS32_COMPAT\n+ default y if CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL\n help\n Select this option if you want to run o32 binaries. These are pure\n 32-bit binaries as used by the 32-bit Linux\/MIPS port. Most of\n@@ -2525,6 +2528,10 @@ config MIPS32_N32\n \n If unsure, say N.\n \n+comment \"64bit kernel, but support of 32bit applications is disabled!\"\n+ depends on 64BIT && !MIPS32_O32 && !MIPS32_N32\n+ depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL\n+\n config BINFMT_ELF32\n bool\n default y if MIPS32_O32 || MIPS32_N32\ndiff --git a\/arch\/mips\/include\/asm\/cpu.h b\/arch\/mips\/include\/asm\/cpu.h\nindex 0a619f8..559bd12 100644\n--- a\/arch\/mips\/include\/asm\/cpu.h\n+++ b\/arch\/mips\/include\/asm\/cpu.h\n@@ -268,7 +268,7 @@ enum cpu_type_enum {\n \/*\n * MIPS64 class processors\n *\/\n- CPU_5KC, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,\n+ CPU_5KC, CPU_5KE, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,\n CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS, CPU_CAVIUM_OCTEON2,\n CPU_XLR, CPU_XLP,\n \ndiff --git a\/arch\/mips\/kernel\/cpu-probe.c b\/arch\/mips\/kernel\/cpu-probe.c\nindex e5f0b27..fe76d60 100644\n--- a\/arch\/mips\/kernel\/cpu-probe.c\n+++ b\/arch\/mips\/kernel\/cpu-probe.c\n@@ -817,6 +817,10 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, \nunsigned int cpu)\n c->cputype = CPU_5KC;\n __cpu_name[cpu] = \"MIPS 5Kc\";\n break;\n+ case PRID_IMP_5KE:\n+ c->cputype = CPU_5KE;\n+ __cpu_name[cpu] = \"MIPS 5KE\";\n+ break;\n case PRID_IMP_20KC:\n c->cputype = CPU_20KC;\n __cpu_name[cpu] = \"MIPS 20Kc\";\ndiff --git a\/arch\/mips\/kernel\/traps.c b\/arch\/mips\/kernel\/traps.c\nindex 7bec6f8..a69edbe 100644\n--- a\/arch\/mips\/kernel\/traps.c\n+++ b\/arch\/mips\/kernel\/traps.c\n@@ -1349,6 +1349,7 @@ static inline void parity_protection_init(void)\n break;\n \n case CPU_5KC:\n+ case CPU_5KE:\n write_c0_ecc(0x80000000);\n back_to_back_c0_hazard();\n \/* Set the PE bit (bit 31) in the c0_errctl register. *\/\n<\/pre>\n\u00a0<\/p>","protected":false},"excerpt":{"rendered":"
\u3000\u3000linux\u5185\u6838\u4e2d\u7684malta board\u4ee3\u7801\u53ea\u652f\u6301MIPS32R1,MIPS32R2\u548cMIPS64R1\u8fd9\u51e0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,5],"tags":[250,248,249,226,187],"class_list":["post-1322","post","type-post","status-publish","format-standard","hentry","category-iot","category-5","tag-malta","tag-mips","tag-mips64","tag-qemu","tag-187"],"_links":{"self":[{"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/posts\/1322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1322"}],"version-history":[{"count":1,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/posts\/1322\/revisions"}],"predecessor-version":[{"id":1323,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=\/wp\/v2\/posts\/1322\/revisions\/1323"}],"wp:attachment":[{"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jarvisw.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}