diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/cputable.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/reg_a2.h | 156 | ||||
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_a2.S | 114 | ||||
| -rw-r--r-- | arch/powerpc/kernel/cputable.c | 25 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 4 |
6 files changed, 304 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 2fe37d78193..2d71523ebb0 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -437,9 +437,13 @@ extern const char *powerpc_base_platform; CPU_FTR_PURR | CPU_FTR_REAL_LE | CPU_FTR_NO_SLBIE_B) #define CPU_FTRS_COMPATIBLE (CPU_FTR_USE_TB | CPU_FTR_PPCAS_ARCH_V2) +#define CPU_FTRS_A2 (CPU_FTR_USE_TB | CPU_FTR_SMT | CPU_FTR_DBELL | \ + CPU_FTR_TLBIEL | CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | \ + CPU_FTR_16M_PAGE) + #ifdef __powerpc64__ #ifdef CONFIG_PPC_BOOK3E -#define CPU_FTRS_POSSIBLE (CPU_FTRS_E5500) +#define CPU_FTRS_POSSIBLE (CPU_FTRS_E5500 | CPU_FTRS_A2) #else #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER3 | CPU_FTRS_RS64 | CPU_FTRS_POWER4 | \ @@ -488,7 +492,7 @@ enum { #ifdef __powerpc64__ #ifdef CONFIG_PPC_BOOK3E -#define CPU_FTRS_ALWAYS (CPU_FTRS_E5500) +#define CPU_FTRS_ALWAYS (CPU_FTRS_E5500 & CPU_FTRS_A2) #else #define CPU_FTRS_ALWAYS \ (CPU_FTRS_POWER3 & CPU_FTRS_RS64 & CPU_FTRS_POWER4 & \ diff --git a/arch/powerpc/include/asm/reg_a2.h b/arch/powerpc/include/asm/reg_a2.h new file mode 100644 index 00000000000..3ba9c6f096f --- /dev/null +++ b/arch/powerpc/include/asm/reg_a2.h @@ -0,0 +1,156 @@ +/* + * Register definitions specific to the A2 core + * + * Copyright (C) 2008 Ben. Herrenschmidt (benh@kernel.crashing.org), IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef __ASM_POWERPC_REG_A2_H__ +#define __ASM_POWERPC_REG_A2_H__ + +#define SPRN_TENSR 0x1b5 +#define SPRN_TENS 0x1b6 /* Thread ENable Set */ +#define SPRN_TENC 0x1b7 /* Thread ENable Clear */ + +#define SPRN_A2_CCR0 0x3f0 /* Core Configuration Register 0 */ +#define SPRN_A2_CCR1 0x3f1 /* Core Configuration Register 1 */ +#define SPRN_A2_CCR2 0x3f2 /* Core Configuration Register 2 */ +#define SPRN_MMUCR0 0x3fc /* MMU Control Register 0 */ +#define SPRN_MMUCR1 0x3fd /* MMU Control Register 1 */ +#define SPRN_MMUCR2 0x3fe /* MMU Control Register 2 */ +#define SPRN_MMUCR3 0x3ff /* MMU Control Register 3 */ + +#define SPRN_IAR 0x372 + +#define SPRN_IUCR0 0x3f3 +#define IUCR0_ICBI_ACK 0x1000 + +#define SPRN_XUCR0 0x3f6 /* Execution Unit Config Register 0 */ + +#define A2_IERAT_SIZE 16 +#define A2_DERAT_SIZE 32 + +/* A2 MMUCR0 bits */ +#define MMUCR0_ECL 0x80000000 /* Extended Class for TLB fills */ +#define MMUCR0_TID_NZ 0x40000000 /* TID is non-zero */ +#define MMUCR0_TS 0x10000000 /* Translation space for TLB fills */ +#define MMUCR0_TGS 0x20000000 /* Guest space for TLB fills */ +#define MMUCR0_TLBSEL 0x0c000000 /* TLB or ERAT target for TLB fills */ +#define MMUCR0_TLBSEL_U 0x00000000 /* TLBSEL = UTLB */ +#define MMUCR0_TLBSEL_I 0x08000000 /* TLBSEL = I-ERAT */ +#define MMUCR0_TLBSEL_D 0x0c000000 /* TLBSEL = D-ERAT */ +#define MMUCR0_LOCKSRSH 0x02000000 /* Use TLB lock on tlbsx. */ +#define MMUCR0_TID_MASK 0x000000ff /* TID field */ + +/* A2 MMUCR1 bits */ +#define MMUCR1_IRRE 0x80000000 /* I-ERAT round robin enable */ +#define MMUCR1_DRRE 0x40000000 /* D-ERAT round robin enable */ +#define MMUCR1_REE 0x20000000 /* Reference Exception Enable*/ +#define MMUCR1_CEE 0x10000000 /* Change exception enable */ +#define MMUCR1_CSINV_ALL 0x00000000 /* Inval ERAT on all CS evts */ +#define MMUCR1_CSINV_NISYNC 0x04000000 /* Inval ERAT on all ex isync*/ +#define MMUCR1_CSINV_NEVER 0x0c000000 /* Don't inval ERAT on CS */ +#define MMUCR1_ICTID 0x00080000 /* IERAT class field as TID */ +#define MMUCR1_ITTID 0x00040000 /* IERAT thdid field as TID */ +#define MMUCR1_DCTID 0x00020000 /* DERAT class field as TID */ +#define MMUCR1_DTTID 0x00010000 /* DERAT thdid field as TID */ +#define MMUCR1_DCCD 0x00008000 /* DERAT class ignore */ +#define MMUCR1_TLBWE_BINV 0x00004000 /* back invalidate on tlbwe */ + +/* A2 MMUCR2 bits */ +#define MMUCR2_PSSEL_SHIFT 4 + +/* A2 MMUCR3 bits */ +#define MMUCR3_THID 0x0000000f /* Thread ID */ + +/* *** ERAT TLB bits definitions */ +#define TLB0_EPN_MASK ASM_CONST(0xfffffffffffff000) +#define TLB0_CLASS_MASK ASM_CONST(0x0000000000000c00) +#define TLB0_CLASS_00 ASM_CONST(0x0000000000000000) +#define TLB0_CLASS_01 ASM_CONST(0x0000000000000400) +#define TLB0_CLASS_10 ASM_CONST(0x0000000000000800) +#define TLB0_CLASS_11 ASM_CONST(0x0000000000000c00) +#define TLB0_V ASM_CONST(0x0000000000000200) +#define TLB0_X ASM_CONST(0x0000000000000100) +#define TLB0_SIZE_MASK ASM_CONST(0x00000000000000f0) +#define TLB0_SIZE_4K ASM_CONST(0x0000000000000010) +#define TLB0_SIZE_64K ASM_CONST(0x0000000000000030) +#define TLB0_SIZE_1M ASM_CONST(0x0000000000000050) +#define TLB0_SIZE_16M ASM_CONST(0x0000000000000070) +#define TLB0_SIZE_1G ASM_CONST(0x00000000000000a0) +#define TLB0_THDID_MASK ASM_CONST(0x000000000000000f) +#define TLB0_THDID_0 ASM_CONST(0x0000000000000001) +#define TLB0_THDID_1 ASM_CONST(0x0000000000000002) +#define TLB0_THDID_2 ASM_CONST(0x0000000000000004) +#define TLB0_THDID_3 ASM_CONST(0x0000000000000008) +#define TLB0_THDID_ALL ASM_CONST(0x000000000000000f) + +#define TLB1_RESVATTR ASM_CONST(0x00f0000000000000) +#define TLB1_U0 ASM_CONST(0x0008000000000000) +#define TLB1_U1 ASM_CONST(0x0004000000000000) +#define TLB1_U2 ASM_CONST(0x0002000000000000) +#define TLB1_U3 ASM_CONST(0x0001000000000000) +#define TLB1_R ASM_CONST(0x0000800000000000) +#define TLB1_C ASM_CONST(0x0000400000000000) +#define TLB1_RPN_MASK ASM_CONST(0x000003fffffff000) +#define TLB1_W ASM_CONST(0x0000000000000800) +#define TLB1_I ASM_CONST(0x0000000000000400) +#define TLB1_M ASM_CONST(0x0000000000000200) +#define TLB1_G ASM_CONST(0x0000000000000100) +#define TLB1_E ASM_CONST(0x0000000000000080) +#define TLB1_VF ASM_CONST(0x0000000000000040) +#define TLB1_UX ASM_CONST(0x0000000000000020) +#define TLB1_SX ASM_CONST(0x0000000000000010) +#define TLB1_UW ASM_CONST(0x0000000000000008) +#define TLB1_SW ASM_CONST(0x0000000000000004) +#define TLB1_UR ASM_CONST(0x0000000000000002) +#define TLB1_SR ASM_CONST(0x0000000000000001) + +/* A2 erativax attributes definitions */ +#define ERATIVAX_RS_IS_ALL 0x000 +#define ERATIVAX_RS_IS_TID 0x040 +#define ERATIVAX_RS_IS_CLASS 0x080 +#define ERATIVAX_RS_IS_FULLMATCH 0x0c0 +#define ERATIVAX_CLASS_00 0x000 +#define ERATIVAX_CLASS_01 0x010 +#define ERATIVAX_CLASS_10 0x020 +#define ERATIVAX_CLASS_11 0x030 +#define ERATIVAX_PSIZE_4K (TLB_PSIZE_4K >> 1) +#define ERATIVAX_PSIZE_64K (TLB_PSIZE_64K >> 1) +#define ERATIVAX_PSIZE_1M (TLB_PSIZE_1M >> 1) +#define ERATIVAX_PSIZE_16M (TLB_PSIZE_16M >> 1) +#define ERATIVAX_PSIZE_1G (TLB_PSIZE_1G >> 1) + +/* A2 eratilx attributes definitions */ +#define ERATILX_T_ALL 0 +#define ERATILX_T_TID 1 +#define ERATILX_T_TGS 2 +#define ERATILX_T_FULLMATCH 3 +#define ERATILX_T_CLASS0 4 +#define ERATILX_T_CLASS1 5 +#define ERATILX_T_CLASS2 6 +#define ERATILX_T_CLASS3 7 + +/* XUCR0 bits */ +#define XUCR0_TRACE_UM_T0 0x40000000 /* Thread 0 */ +#define XUCR0_TRACE_UM_T1 0x20000000 /* Thread 1 */ +#define XUCR0_TRACE_UM_T2 0x10000000 /* Thread 2 */ +#define XUCR0_TRACE_UM_T3 0x08000000 /* Thread 3 */ + +/* A2 CCR0 register */ +#define A2_CCR0_PME_DISABLED 0x00000000 +#define A2_CCR0_PME_SLEEP 0x40000000 +#define A2_CCR0_PME_RVW 0x80000000 +#define A2_CCR0_PME_DISABLED2 0xc0000000 + +/* A2 CCR2 register */ +#define A2_CCR2_ERAT_ONLY_MODE 0x00000001 +#define A2_CCR2_ENABLE_ICSWX 0x00000002 +#define A2_CCR2_ENABLE_PC 0x20000000 +#define A2_CCR2_ENABLE_TRACE 0x40000000 + +#endif /* __ASM_POWERPC_REG_A2_H__ */ diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 0fd6273bb8a..058bc8bac48 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power7.o obj64-$(CONFIG_RELOCATABLE) += reloc_64.o obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o +obj-$(CONFIG_PPC_A2) += cpu_setup_a2.o obj-$(CONFIG_PPC64) += vdso64/ obj-$(CONFIG_ALTIVEC) += vecemu.o obj-$(CONFIG_PPC_970_NAP) += idle_power4.o diff --git a/arch/powerpc/kernel/cpu_setup_a2.S b/arch/powerpc/kernel/cpu_setup_a2.S new file mode 100644 index 00000000000..7f818feaa7a --- /dev/null +++ b/arch/powerpc/kernel/cpu_setup_a2.S @@ -0,0 +1,114 @@ +/* + * A2 specific assembly support code + * + * Copyright 2009 Ben Herrenschmidt, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <asm/asm-offsets.h> +#include <asm/ppc_asm.h> +#include <asm/ppc-opcode.h> +#include <asm/processor.h> +#include <asm/reg_a2.h> +#include <asm/reg.h> +#include <asm/thread_info.h> + +/* + * Disable thdid and class fields in ERATs to bump PID to full 14 bits capacity. + * This also prevents external LPID accesses but that isn't a problem when not a + * guest. Under PV, this setting will be ignored and MMUCR will return the right + * number of PID bits we can use. + */ +#define MMUCR1_EXTEND_PID \ + (MMUCR1_ICTID | MMUCR1_ITTID | MMUCR1_DCTID | \ + MMUCR1_DTTID | MMUCR1_DCCD) + +/* + * Use extended PIDs if enabled. + * Don't clear the ERATs on context sync events and enable I & D LRU. + * Enable ERAT back invalidate when tlbwe overwrites an entry. + */ +#define INITIAL_MMUCR1 \ + (MMUCR1_EXTEND_PID | MMUCR1_CSINV_NEVER | MMUCR1_IRRE | \ + MMUCR1_DRRE | MMUCR1_TLBWE_BINV) + +_GLOBAL(__setup_cpu_a2) + /* Some of these are actually thread local and some are + * core local but doing it always won't hurt + */ + +#ifdef CONFIG_PPC_WSP_COPRO + /* Make sure ACOP starts out as zero */ + li r3,0 + mtspr SPRN_ACOP,r3 + + /* Enable icswx instruction */ + mfspr r3,SPRN_A2_CCR2 + ori r3,r3,A2_CCR2_ENABLE_ICSWX + mtspr SPRN_A2_CCR2,r3 + + /* Unmask all CTs in HACOP */ + li r3,-1 + mtspr SPRN_HACOP,r3 +#endif /* CONFIG_PPC_WSP_COPRO */ + + /* Enable doorbell */ + mfspr r3,SPRN_A2_CCR2 + oris r3,r3,A2_CCR2_ENABLE_PC@h + mtspr SPRN_A2_CCR2,r3 + isync + + /* Setup CCR0 to disable power saving for now as it's busted + * in the current implementations. Setup CCR1 to wake on + * interrupts normally (we write the default value but who + * knows what FW may have clobbered...) + */ + li r3,0 + mtspr SPRN_A2_CCR0, r3 + LOAD_REG_IMMEDIATE(r3,0x0f0f0f0f) + mtspr SPRN_A2_CCR1, r3 + + /* Initialise MMUCR1 */ + lis r3,INITIAL_MMUCR1@h + ori r3,r3,INITIAL_MMUCR1@l + mtspr SPRN_MMUCR1,r3 + + /* Set MMUCR2 to enable 4K, 64K, 1M, 16M and 1G pages */ + LOAD_REG_IMMEDIATE(r3, 0x000a7531) + mtspr SPRN_MMUCR2,r3 + + /* Set MMUCR3 to write all thids bit to the TLB */ + LOAD_REG_IMMEDIATE(r3, 0x0000000f) + mtspr SPRN_MMUCR3,r3 + + /* Don't do ERAT stuff if running guest mode */ + mfmsr r3 + andis. r0,r3,MSR_GS@h + bne 1f + + /* Now set the I-ERAT watermark to 15 */ + lis r4,(MMUCR0_TLBSEL_I|MMUCR0_ECL)@h + mtspr SPRN_MMUCR0, r4 + li r4,A2_IERAT_SIZE-1 + PPC_ERATWE(r4,r4,3) + + /* Now set the D-ERAT watermark to 31 */ + lis r4,(MMUCR0_TLBSEL_D|MMUCR0_ECL)@h + mtspr SPRN_MMUCR0, r4 + li r4,A2_DERAT_SIZE-1 + PPC_ERATWE(r4,r4,3) + + /* And invalidate the beast just in case. That won't get rid of + * a bolted entry though it will be in LRU and so will go away eventually + * but let's not bother for now + */ + PPC_ERATILX(0,0,0) +1: + blr + +_GLOBAL(__restore_cpu_a2) + b __setup_cpu_a2 diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index b65b4908d3c..3d7b65ad496 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -62,10 +62,12 @@ extern void __setup_cpu_745x(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_ppc970MP(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_pa6t(unsigned long offset, struct cpu_spec* spec); +extern void __setup_cpu_a2(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_pa6t(void); extern void __restore_cpu_ppc970(void); extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_power7(void); +extern void __restore_cpu_a2(void); #endif /* CONFIG_PPC64 */ #if defined(CONFIG_E500) extern void __setup_cpu_e5500(unsigned long offset, struct cpu_spec* spec); @@ -2011,7 +2013,26 @@ static struct cpu_spec __initdata cpu_specs[] = { #endif /* CONFIG_PPC32 */ #endif /* CONFIG_E500 */ -#ifdef CONFIG_PPC_BOOK3E_64 +#ifdef CONFIG_PPC_A2 + { /* Standard A2 (>= DD2) + FPU core */ + .pvr_mask = 0xffff0000, + .pvr_value = 0x00480000, + .cpu_name = "A2 (>= DD2)", + .cpu_features = CPU_FTRS_A2, + .cpu_user_features = COMMON_USER_PPC64, + .mmu_features = MMU_FTR_TYPE_3E | MMU_FTR_USE_TLBILX | + MMU_FTR_USE_TLBIVAX_BCAST | + MMU_FTR_LOCK_BCAST_INVAL | + MMU_FTR_USE_TLBRSRV | + MMU_FTR_USE_PAIRED_MAS, + .icache_bsize = 64, + .dcache_bsize = 64, + .num_pmcs = 0, + .cpu_setup = __setup_cpu_a2, + .cpu_restore = __restore_cpu_a2, + .machine_check = machine_check_generic, + .platform = "ppca2", + }, { /* This is a default entry to get going, to be replaced by * a real one at some stage */ @@ -2032,7 +2053,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .machine_check = machine_check_generic, .platform = "power6", }, -#endif +#endif /* CONFIG_PPC_A2 */ }; static struct cpu_spec the_cpu_spec; diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 111138c55f9..7c1e1c64437 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -107,6 +107,10 @@ config POWER4 depends on PPC64 && PPC_BOOK3S def_bool y +config PPC_A2 + bool + depends on PPC_BOOK3E_64 + config TUNE_CELL bool "Optimize for Cell Broadband Engine" depends on PPC64 && PPC_BOOK3S |