diff options
Diffstat (limited to 'target/linux/generic/patches-3.10/001-Revert-MIPS-microMIPS-Support-dynamic-ASID-sizing.patch')
| -rw-r--r-- | target/linux/generic/patches-3.10/001-Revert-MIPS-microMIPS-Support-dynamic-ASID-sizing.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.10/001-Revert-MIPS-microMIPS-Support-dynamic-ASID-sizing.patch b/target/linux/generic/patches-3.10/001-Revert-MIPS-microMIPS-Support-dynamic-ASID-sizing.patch new file mode 100644 index 000000000..7a44a620e --- /dev/null +++ b/target/linux/generic/patches-3.10/001-Revert-MIPS-microMIPS-Support-dynamic-ASID-sizing.patch @@ -0,0 +1,82 @@ +From 8ea6cd7af124ad070b44a7f60e225e45e3f38f79 Mon Sep 17 00:00:00 2001 +From: David Daney <david.daney@cavium.com> +Date: Mon, 13 May 2013 13:56:43 -0700 +Subject: [PATCH 1/3] Revert "MIPS: microMIPS: Support dynamic ASID sizing." + +This reverts commit f6b06d9361a008afb93b97fb3683a6e92d69d0f4. + +The next revert depends on this one, so this has to go too. + +Signed-off-by: David Daney <david.daney@cavium.com> +Cc: linux-mips@linux-mips.org +Cc: linux-kernel@vger.kernel.org +Cc: "Steven J. Hill" <Steven.Hill@imgtec.com> +Cc: David Daney <david.daney@cavium.com> +Patchwork: https://patchwork.linux-mips.org/patch/5241/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/mm/tlbex.c | 34 ++-------------------------------- + 1 file changed, 2 insertions(+), 32 deletions(-) + +--- a/arch/mips/mm/tlbex.c ++++ b/arch/mips/mm/tlbex.c +@@ -309,32 +309,13 @@ static int check_for_high_segbits __cpui + static void __cpuinit insn_fixup(unsigned int **start, unsigned int **stop, + unsigned int i_const) + { +- unsigned int **p; ++ unsigned int **p, *ip; + + for (p = start; p < stop; p++) { +-#ifndef CONFIG_CPU_MICROMIPS +- unsigned int *ip; +- + ip = *p; + *ip = (*ip & 0xffff0000) | i_const; +-#else +- unsigned short *ip; +- +- ip = ((unsigned short *)((unsigned int)*p - 1)); +- if ((*ip & 0xf000) == 0x4000) { +- *ip &= 0xfff1; +- *ip |= (i_const << 1); +- } else if ((*ip & 0xf000) == 0x6000) { +- *ip &= 0xfff1; +- *ip |= ((i_const >> 2) << 1); +- } else { +- ip++; +- *ip = i_const; +- } +-#endif +- local_flush_icache_range((unsigned long)ip, +- (unsigned long)ip + sizeof(*ip)); + } ++ local_flush_icache_range((unsigned long)*p, (unsigned long)((*p) + 1)); + } + + #define asid_insn_fixup(section, const) \ +@@ -354,14 +335,6 @@ static void __cpuinit setup_asid(unsigne + extern asmlinkage void handle_ri_rdhwr_vivt(void); + unsigned long *vivt_exc; + +-#ifdef CONFIG_CPU_MICROMIPS +- /* +- * Worst case optimised microMIPS addiu instructions support +- * only a 3-bit immediate value. +- */ +- if(inc > 7) +- panic("Invalid ASID increment value!"); +-#endif + asid_insn_fixup(__asid_inc, inc); + asid_insn_fixup(__asid_mask, mask); + asid_insn_fixup(__asid_version_mask, version_mask); +@@ -369,9 +342,6 @@ static void __cpuinit setup_asid(unsigne + + /* Patch up the 'handle_ri_rdhwr_vivt' handler. */ + vivt_exc = (unsigned long *) &handle_ri_rdhwr_vivt; +-#ifdef CONFIG_CPU_MICROMIPS +- vivt_exc = (unsigned long *)((unsigned long) vivt_exc - 1); +-#endif + vivt_exc++; + *vivt_exc = (*vivt_exc & ~mask) | mask; + |