diff options
author | Rafał Miłecki <zajec5@gmail.com> | 2015-12-18 07:25:13 +0000 |
---|---|---|
committer | Rafał Miłecki <zajec5@gmail.com> | 2015-12-18 07:25:13 +0000 |
commit | 7caa9411e750279839ac0d253ecac778619412b5 (patch) | |
tree | 93ba95e6f438eb7f0b0b3a2d01cd0d3f387d24d6 /target/linux/brcm47xx/patches-4.4/920-cache-wround.patch | |
parent | 4afe0fc2b2ce174f4e9e227e80064c1be77230ca (diff) | |
download | mtk-20170518-7caa9411e750279839ac0d253ecac778619412b5.zip mtk-20170518-7caa9411e750279839ac0d253ecac778619412b5.tar.gz mtk-20170518-7caa9411e750279839ac0d253ecac778619412b5.tar.bz2 |
brcm47xx: add kernel 4.4 support
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 47930
Diffstat (limited to 'target/linux/brcm47xx/patches-4.4/920-cache-wround.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-4.4/920-cache-wround.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch b/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch new file mode 100644 index 0000000..b730a76 --- /dev/null +++ b/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch @@ -0,0 +1,138 @@ +--- a/arch/mips/include/asm/r4kcache.h ++++ b/arch/mips/include/asm/r4kcache.h +@@ -28,10 +28,28 @@ extern void (*r4k_blast_icache)(void); + #ifdef CONFIG_BCM47XX + #include <asm/paccess.h> + #include <linux/ssb/ssb.h> +-#define BCM4710_DUMMY_RREG() ((void) *((u8 *) KSEG1ADDR(SSB_ENUM_BASE))) ++#define BCM4710_DUMMY_RREG() bcm4710_dummy_rreg() ++ ++static inline unsigned long bcm4710_dummy_rreg(void) ++{ ++ return *(volatile unsigned long *)(KSEG1ADDR(SSB_ENUM_BASE)); ++} ++ ++#define BCM4710_FILL_TLB(addr) bcm4710_fill_tlb((void *)(addr)) ++ ++static inline unsigned long bcm4710_fill_tlb(void *addr) ++{ ++ return *(unsigned long *)addr; ++} ++ ++#define BCM4710_PROTECTED_FILL_TLB(addr) bcm4710_protected_fill_tlb((void *)(addr)) ++ ++static inline void bcm4710_protected_fill_tlb(void *addr) ++{ ++ unsigned long x; ++ get_dbe(x, (unsigned long *)addr);; ++} + +-#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr)) +-#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); }) + #else + #define BCM4710_DUMMY_RREG() + +--- a/arch/mips/mm/tlbex.c ++++ b/arch/mips/mm/tlbex.c +@@ -943,6 +943,9 @@ build_get_pgde32(u32 **p, unsigned int t + uasm_i_srl(p, ptr, ptr, SMP_CPUID_PTRSHIFT); + uasm_i_addu(p, ptr, tmp, ptr); + #else ++#ifdef CONFIG_BCM47XX ++ uasm_i_nop(p); ++#endif + UASM_i_LA_mostly(p, ptr, pgdc); + #endif + uasm_i_mfc0(p, tmp, C0_BADVADDR); /* get faulting address */ +@@ -1281,12 +1284,12 @@ static void build_r4000_tlb_refill_handl + /* No need for uasm_i_nop */ + } + +-#ifdef CONFIG_BCM47XX +- uasm_i_nop(&p); +-#endif + #ifdef CONFIG_64BIT + build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */ + #else ++# ifdef CONFIG_BCM47XX ++ uasm_i_nop(&p); ++# endif + build_get_pgde32(&p, K0, K1); /* get pgd in K1 */ + #endif + +@@ -1298,6 +1301,9 @@ static void build_r4000_tlb_refill_handl + build_update_entries(&p, K0, K1); + build_tlb_write_entry(&p, &l, &r, tlb_random); + uasm_l_leave(&l, p); ++#ifdef CONFIG_BCM47XX ++ uasm_i_nop(&p); ++#endif + uasm_i_eret(&p); /* return from trap */ + } + #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT +@@ -1871,12 +1877,12 @@ build_r4000_tlbchange_handler_head(u32 * + { + struct work_registers wr = build_get_work_registers(p); + +-#ifdef CONFIG_BCM47XX +- uasm_i_nop(p); +-#endif + #ifdef CONFIG_64BIT + build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */ + #else ++# ifdef CONFIG_BCM47XX ++ uasm_i_nop(p); ++# endif + build_get_pgde32(p, wr.r1, wr.r2); /* get pgd in ptr */ + #endif + +@@ -1923,6 +1929,9 @@ build_r4000_tlbchange_handler_tail(u32 * + build_tlb_write_entry(p, l, r, tlb_indexed); + uasm_l_leave(l, *p); + build_restore_work_registers(p); ++#ifdef CONFIG_BCM47XX ++ uasm_i_nop(p); ++#endif + uasm_i_eret(p); /* return from trap */ + + #ifdef CONFIG_64BIT +--- a/arch/mips/kernel/genex.S ++++ b/arch/mips/kernel/genex.S +@@ -21,6 +21,19 @@ + #include <asm/war.h> + #include <asm/thread_info.h> + ++#ifdef CONFIG_BCM47XX ++# ifdef eret ++# undef eret ++# endif ++# define eret \ ++ .set push; \ ++ .set noreorder; \ ++ nop; \ ++ nop; \ ++ eret; \ ++ .set pop; ++#endif ++ + __INIT + + /* +@@ -34,7 +47,6 @@ NESTED(except_vec3_generic, 0, sp) + .set noat + #ifdef CONFIG_BCM47XX + nop +- nop + #endif + #if R5432_CP0_INTERRUPT_WAR + mfc0 k0, CP0_INDEX +@@ -59,6 +71,9 @@ NESTED(except_vec3_r4000, 0, sp) + .set push + .set arch=r4000 + .set noat ++#ifdef CONFIG_BCM47XX ++ nop ++#endif + mfc0 k1, CP0_CAUSE + li k0, 31<<2 + andi k1, k1, 0x7c |