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author | Hauke Mehrtens <hauke@openwrt.org> | 2014-03-12 23:28:41 +0000 |
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committer | Hauke Mehrtens <hauke@openwrt.org> | 2014-03-12 23:28:41 +0000 |
commit | 63f0f18e5e42ef4e5d9a16eb919a007d6b64b7c2 (patch) | |
tree | 9b9607e9c889b60c3193d1280744b0c74424bbd7 /target/linux/brcm47xx/patches-3.14/920-cache-wround.patch | |
parent | ff8be57b863fc11322069a93a1e2806f3852c6de (diff) | |
download | master-187ad058-63f0f18e5e42ef4e5d9a16eb919a007d6b64b7c2.tar.gz master-187ad058-63f0f18e5e42ef4e5d9a16eb919a007d6b64b7c2.tar.bz2 master-187ad058-63f0f18e5e42ef4e5d9a16eb919a007d6b64b7c2.zip |
brcm47xx: add initial support for kernel 3.14
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39905 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm47xx/patches-3.14/920-cache-wround.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-3.14/920-cache-wround.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.14/920-cache-wround.patch b/target/linux/brcm47xx/patches-3.14/920-cache-wround.patch new file mode 100644 index 0000000000..51c233a6d2 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.14/920-cache-wround.patch @@ -0,0 +1,138 @@ +--- a/arch/mips/include/asm/r4kcache.h ++++ b/arch/mips/include/asm/r4kcache.h +@@ -21,10 +21,28 @@ + #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 +@@ -935,6 +935,9 @@ 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 */ +@@ -1277,12 +1280,12 @@ 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 + +@@ -1294,6 +1297,9 @@ 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 +@@ -1838,12 +1844,12 @@ 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 + +@@ -1882,6 +1888,9 @@ 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 ++ + #ifdef CONFIG_MIPS_MT_SMTC + #define PANIC_PIC(msg) \ + .set push; \ +@@ -48,7 +61,6 @@ NESTED(except_vec3_generic, 0, sp) + .set noat + #ifdef CONFIG_BCM47XX + nop +- nop + #endif + #if R5432_CP0_INTERRUPT_WAR + mfc0 k0, CP0_INDEX +@@ -73,6 +85,9 @@ NESTED(except_vec3_r4000, 0, sp) + .set push + .set mips3 + .set noat ++#ifdef CONFIG_BCM47XX ++ nop ++#endif + mfc0 k1, CP0_CAUSE + li k0, 31<<2 + andi k1, k1, 0x7c |