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[PATCH] ppc32: Add support for Freescale e200 (Book-E) core 

The e200 core is a Book-E core (similar to e500) that has a unified L1 cache
and is not cache coherent on the bus.  The e200 core also adds a separate
exception level for debug exceptions.  Part of this patch helps to cleanup a
few cases that are true for all Freescale Book-E parts, not just e500.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Kumar Gala 2005-06-25 14:54:37 -07:00 committed by Linus Torvalds
parent 62aa751d16
commit 33d9e9b56d
16 changed files with 214 additions and 18 deletions
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17
arch/ppc/Kconfig
View File

@ -88,6 +88,9 @@ config 8xx
depends on BROKEN
bool "8xx"
config E200
bool "e200"
config E500
bool "e500"
@ -98,12 +101,12 @@ config PPC_FPU
config BOOKE
bool
depends on E500
depends on E200 || E500
default y
config FSL_BOOKE
bool
depends on E500
depends on E200 || E500
default y
config PTE_64BIT
@ -141,16 +144,16 @@ config ALTIVEC
config SPE
bool "SPE Support"
depends on E500
depends on E200 || E500
---help---
This option enables kernel support for the Signal Processing
Extensions (SPE) to the PowerPC processor. The kernel currently
supports saving and restoring SPE registers, and turning on the
'spe enable' bit so user processes can execute SPE instructions.
This option is only usefully if you have a processor that supports
This option is only useful if you have a processor that supports
SPE (e500, otherwise known as 85xx series), but does not have any
affect on a non-spe cpu (it does, however add code to the kernel).
effect on a non-spe cpu (it does, however add code to the kernel).
If in doubt, say Y here.
@ -200,7 +203,7 @@ config TAU_AVERAGE
config MATH_EMULATION
bool "Math emulation"
depends on 4xx || 8xx || E500
depends on 4xx || 8xx || E200 || E500
---help---
Some PowerPC chips designed for embedded applications do not have
a floating-point unit and therefore do not implement the
@ -254,7 +257,7 @@ config PPC_STD_MMU
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx
depends on 4xx || 8xx || E200
default y
endmenu

3
arch/ppc/Makefile
View File

@ -29,7 +29,7 @@ CPP = $(CC) -E $(CFLAGS)
CHECKFLAGS += -D__powerpc__
ifndef CONFIG_E500
ifndef CONFIG_FSL_BOOKE
CFLAGS += -mstring
endif
@ -38,6 +38,7 @@ cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
cpu-as-$(CONFIG_E500) += -Wa,-me500
cpu-as-$(CONFIG_E200) += -Wa,-me200
AFLAGS += $(cpu-as-y)
CFLAGS += $(cpu-as-y)

2
arch/ppc/kernel/Makefile
View File

@ -26,7 +26,9 @@ obj-$(CONFIG_KGDB) += ppc-stub.o
obj-$(CONFIG_SMP) += smp.o smp-tbsync.o
obj-$(CONFIG_TAU) += temp.o
obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o
ifndef CONFIG_E200
obj-$(CONFIG_FSL_BOOKE) += perfmon_fsl_booke.o
endif
ifndef CONFIG_MATH_EMULATION
obj-$(CONFIG_8xx) += softemu8xx.o

25
arch/ppc/kernel/cputable.c
View File

@ -903,7 +903,30 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 32,
},
#endif /* CONFIG_44x */
#ifdef CONFIG_E500
#ifdef CONFIG_FSL_BOOKE
{ /* e200z5 */
.pvr_mask = 0xfff00000,
.pvr_value = 0x81000000,
.cpu_name = "e200z5",
/* xxx - galak: add CPU_FTR_MAYBE_CAN_DOZE */
.cpu_features = CPU_FTR_USE_TB,
.cpu_user_features = PPC_FEATURE_32 |
PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_EFP_SINGLE |
PPC_FEATURE_UNIFIED_CACHE,
.dcache_bsize = 32,
},
{ /* e200z6 */
.pvr_mask = 0xfff00000,
.pvr_value = 0x81100000,
.cpu_name = "e200z6",
/* xxx - galak: add CPU_FTR_MAYBE_CAN_DOZE */
.cpu_features = CPU_FTR_USE_TB,
.cpu_user_features = PPC_FEATURE_32 |
PPC_FEATURE_HAS_MMU | PPC_FEATURE_SPE_COMP |
PPC_FEATURE_HAS_EFP_SINGLE |
PPC_FEATURE_UNIFIED_CACHE,
.dcache_bsize = 32,
},
{ /* e500 */
.pvr_mask = 0xffff0000,
.pvr_value = 0x80200000,

9
arch/ppc/kernel/entry.S
View File

@ -60,6 +60,11 @@ mcheck_transfer_to_handler:
TRANSFER_TO_HANDLER_EXC_LEVEL(MCHECK)
b transfer_to_handler_full
.globl debug_transfer_to_handler
debug_transfer_to_handler:
TRANSFER_TO_HANDLER_EXC_LEVEL(DEBUG)
b transfer_to_handler_full
.globl crit_transfer_to_handler
crit_transfer_to_handler:
TRANSFER_TO_HANDLER_EXC_LEVEL(CRIT)
@ -835,6 +840,10 @@ ret_from_crit_exc:
RET_FROM_EXC_LEVEL(SPRN_CSRR0, SPRN_CSRR1, RFCI)
#ifdef CONFIG_BOOKE
.globl ret_from_debug_exc
ret_from_debug_exc:
RET_FROM_EXC_LEVEL(SPRN_DSRR0, SPRN_DSRR1, RFDI)
.globl ret_from_mcheck_exc
ret_from_mcheck_exc:
RET_FROM_EXC_LEVEL(SPRN_MCSRR0, SPRN_MCSRR1, RFMCI)

64
arch/ppc/kernel/head_booke.h
View File

@ -49,6 +49,7 @@
*
* On 40x critical is the only additional level
* On 44x/e500 we have critical and machine check
* On e200 we have critical and debug (machine check occurs via critical)
*
* Additionally we reserve a SPRG for each priority level so we can free up a
* GPR to use as the base for indirect access to the exception stacks. This
@ -60,12 +61,16 @@
/* CRIT_SPRG only used in critical exception handling */
#define CRIT_SPRG SPRN_SPRG2
/* MCHECK_SPRG only used in critical exception handling */
/* MCHECK_SPRG only used in machine check exception handling */
#define MCHECK_SPRG SPRN_SPRG6W
#define MCHECK_STACK_TOP (exception_stack_top - 4096)
#define CRIT_STACK_TOP (exception_stack_top)
/* only on e200 for now */
#define DEBUG_STACK_TOP (exception_stack_top - 4096)
#define DEBUG_SPRG SPRN_SPRG6W
#ifdef CONFIG_SMP
#define BOOKE_LOAD_EXC_LEVEL_STACK(level) \
mfspr r8,SPRN_PIR; \
@ -124,6 +129,8 @@
#define CRITICAL_EXCEPTION_PROLOG \
EXC_LEVEL_EXCEPTION_PROLOG(CRIT, SPRN_CSRR0, SPRN_CSRR1)
#define DEBUG_EXCEPTION_PROLOG \
EXC_LEVEL_EXCEPTION_PROLOG(DEBUG, SPRN_DSRR0, SPRN_DSRR1)
#define MCHECK_EXCEPTION_PROLOG \
EXC_LEVEL_EXCEPTION_PROLOG(MCHECK, SPRN_MCSRR0, SPRN_MCSRR1)
@ -205,6 +212,60 @@ label:
* save (and later restore) the MSR via SPRN_CSRR1, which will still have
* the MSR_DE bit set.
*/
#ifdef CONFIG_E200
#define DEBUG_EXCEPTION \
START_EXCEPTION(Debug); \
DEBUG_EXCEPTION_PROLOG; \
\
/* \
* If there is a single step or branch-taken exception in an \
* exception entry sequence, it was probably meant to apply to \
* the code where the exception occurred (since exception entry \
* doesn't turn off DE automatically). We simulate the effect \
* of turning off DE on entry to an exception handler by turning \
* off DE in the CSRR1 value and clearing the debug status. \
*/ \
mfspr r10,SPRN_DBSR; /* check single-step/branch taken */ \
andis. r10,r10,DBSR_IC@h; \
beq+ 2f; \
\
lis r10,KERNELBASE@h; /* check if exception in vectors */ \
ori r10,r10,KERNELBASE@l; \
cmplw r12,r10; \
blt+ 2f; /* addr below exception vectors */ \
\
lis r10,Debug@h; \
ori r10,r10,Debug@l; \
cmplw r12,r10; \
bgt+ 2f; /* addr above exception vectors */ \
\
/* here it looks like we got an inappropriate debug exception. */ \
1: rlwinm r9,r9,0,~MSR_DE; /* clear DE in the CDRR1 value */ \
lis r10,DBSR_IC@h; /* clear the IC event */ \
mtspr SPRN_DBSR,r10; \
/* restore state and get out */ \
lwz r10,_CCR(r11); \
lwz r0,GPR0(r11); \
lwz r1,GPR1(r11); \
mtcrf 0x80,r10; \
mtspr SPRN_DSRR0,r12; \
mtspr SPRN_DSRR1,r9; \
lwz r9,GPR9(r11); \
lwz r12,GPR12(r11); \
mtspr DEBUG_SPRG,r8; \
BOOKE_LOAD_EXC_LEVEL_STACK(DEBUG); /* r8 points to the debug stack */ \
lwz r10,GPR10-INT_FRAME_SIZE(r8); \
lwz r11,GPR11-INT_FRAME_SIZE(r8); \
mfspr r8,DEBUG_SPRG; \
\
RFDI; \
b .; \
\
/* continue normal handling for a critical exception... */ \
2: mfspr r4,SPRN_DBSR; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc)
#else
#define DEBUG_EXCEPTION \
START_EXCEPTION(Debug); \
CRITICAL_EXCEPTION_PROLOG; \
@ -257,6 +318,7 @@ label:
2: mfspr r4,SPRN_DBSR; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc)
#endif
#define INSTRUCTION_STORAGE_EXCEPTION \
START_EXCEPTION(InstructionStorage) \

51
arch/ppc/kernel/head_fsl_booke.S
View File

@ -102,6 +102,7 @@ invstr: mflr r6 /* Make it accessible */
or r7,r7,r4
mtspr SPRN_MAS6,r7
tlbsx 0,r6 /* search MSR[IS], SPID=PID0 */
#ifndef CONFIG_E200
mfspr r7,SPRN_MAS1
andis. r7,r7,MAS1_VALID@h
bne match_TLB
@ -118,6 +119,7 @@ invstr: mflr r6 /* Make it accessible */
or r7,r7,r4
mtspr SPRN_MAS6,r7
tlbsx 0,r6 /* Fall through, we had to match */
#endif
match_TLB:
mfspr r7,SPRN_MAS0
rlwinm r3,r7,16,20,31 /* Extract MAS0(Entry) */
@ -196,8 +198,10 @@ skpinv: addi r6,r6,1 /* Increment */
/* 4. Clear out PIDs & Search info */
li r6,0
mtspr SPRN_PID0,r6
#ifndef CONFIG_E200
mtspr SPRN_PID1,r6
mtspr SPRN_PID2,r6
#endif
mtspr SPRN_MAS6,r6
/* 5. Invalidate mapping we started in */
@ -277,7 +281,9 @@ skpinv: addi r6,r6,1 /* Increment */
SET_IVOR(32, SPEUnavailable);
SET_IVOR(33, SPEFloatingPointData);
SET_IVOR(34, SPEFloatingPointRound);
#ifndef CONFIG_E200
SET_IVOR(35, PerformanceMonitor);
#endif
/* Establish the interrupt vector base */
lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
@ -285,6 +291,9 @@ skpinv: addi r6,r6,1 /* Increment */
/* Setup the defaults for TLB entries */
li r2,(MAS4_TSIZED(BOOKE_PAGESZ_4K))@l
#ifdef CONFIG_E200
oris r2,r2,MAS4_TLBSELD(1)@h
#endif
mtspr SPRN_MAS4, r2
#if 0
@ -293,6 +302,12 @@ skpinv: addi r6,r6,1 /* Increment */
oris r2,r2,HID0_DOZE@h
mtspr SPRN_HID0, r2
#endif
#ifdef CONFIG_E200
/* enable dedicated debug exception handling resources (Debug APU) */
mfspr r2,SPRN_HID0
ori r2,r2,HID0_DAPUEN@l
mtspr SPRN_HID0,r2
#endif
#if !defined(CONFIG_BDI_SWITCH)
/*
@ -414,7 +429,12 @@ interrupt_base:
CRITICAL_EXCEPTION(0x0100, CriticalInput, UnknownException)
/* Machine Check Interrupt */
#ifdef CONFIG_E200
/* no RFMCI, MCSRRs on E200 */
CRITICAL_EXCEPTION(0x0200, MachineCheck, MachineCheckException)
#else
MCHECK_EXCEPTION(0x0200, MachineCheck, MachineCheckException)
#endif
/* Data Storage Interrupt */
START_EXCEPTION(DataStorage)
@ -519,8 +539,13 @@ interrupt_base:
/* Floating Point Unavailable Interrupt */
#ifdef CONFIG_PPC_FPU
FP_UNAVAILABLE_EXCEPTION
#else
#ifdef CONFIG_E200
/* E200 treats 'normal' floating point instructions as FP Unavail exception */
EXCEPTION(0x0800, FloatingPointUnavailable, ProgramCheckException, EXC_XFER_EE)
#else
EXCEPTION(0x0800, FloatingPointUnavailable, UnknownException, EXC_XFER_EE)
#endif
#endif
/* System Call Interrupt */
@ -691,6 +716,7 @@ interrupt_base:
/*
* Local functions
*/
/*
* Data TLB exceptions will bail out to this point
* if they can't resolve the lightweight TLB fault.
@ -761,6 +787,31 @@ END_FTR_SECTION_IFSET(CPU_FTR_BIG_PHYS)
2: rlwimi r11, r12, 0, 20, 31 /* Extract RPN from PTE and merge with perms */
mtspr SPRN_MAS3, r11
#endif
#ifdef CONFIG_E200
/* Round robin TLB1 entries assignment */
mfspr r12, SPRN_MAS0
/* Extract TLB1CFG(NENTRY) */
mfspr r11, SPRN_TLB1CFG
andi. r11, r11, 0xfff
/* Extract MAS0(NV) */
andi. r13, r12, 0xfff
addi r13, r13, 1
cmpw 0, r13, r11
addi r12, r12, 1
/* check if we need to wrap */
blt 7f
/* wrap back to first free tlbcam entry */
lis r13, tlbcam_index@ha
lwz r13, tlbcam_index@l(r13)
rlwimi r12, r13, 0, 20, 31
7:
mtspr SPRN_MAS0,r12
#endif /* CONFIG_E200 */
tlbwe
/* Done...restore registers and get out of here. */

8
arch/ppc/kernel/misc.S
View File

@ -593,6 +593,14 @@ _GLOBAL(flush_instruction_cache)
iccci 0,r3
#endif
#elif CONFIG_FSL_BOOKE
BEGIN_FTR_SECTION
mfspr r3,SPRN_L1CSR0
ori r3,r3,L1CSR0_CFI|L1CSR0_CLFC
/* msync; isync recommended here */
mtspr SPRN_L1CSR0,r3
isync
blr
END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
mfspr r3,SPRN_L1CSR1
ori r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR
mtspr SPRN_L1CSR1,r3

2
arch/ppc/kernel/perfmon.c
View File

@ -36,7 +36,7 @@
/* A lock to regulate grabbing the interrupt */
DEFINE_SPINLOCK(perfmon_lock);
#ifdef CONFIG_FSL_BOOKE
#if defined (CONFIG_FSL_BOOKE) && !defined (CONFIG_E200)
static void dummy_perf(struct pt_regs *regs)
{
unsigned int pmgc0 = mfpmr(PMRN_PMGC0);

24
arch/ppc/kernel/traps.c
View File

@ -173,13 +173,13 @@ static inline int check_io_access(struct pt_regs *regs)
/* On 4xx, the reason for the machine check or program exception
is in the ESR. */
#define get_reason(regs) ((regs)->dsisr)
#ifndef CONFIG_E500
#ifndef CONFIG_FSL_BOOKE
#define get_mc_reason(regs) ((regs)->dsisr)
#else
#define get_mc_reason(regs) (mfspr(SPRN_MCSR))
#endif
#define REASON_FP ESR_FP
#define REASON_ILLEGAL ESR_PIL
#define REASON_ILLEGAL (ESR_PIL | ESR_PUO)
#define REASON_PRIVILEGED ESR_PPR
#define REASON_TRAP ESR_PTR
@ -302,7 +302,25 @@ void MachineCheckException(struct pt_regs *regs)
printk("Bus - Instruction Parity Error\n");
if (reason & MCSR_BUS_RPERR)
printk("Bus - Read Parity Error\n");
#else /* !CONFIG_4xx && !CONFIG_E500 */
#elif defined (CONFIG_E200)
printk("Machine check in kernel mode.\n");
printk("Caused by (from MCSR=%lx): ", reason);
if (reason & MCSR_MCP)
printk("Machine Check Signal\n");
if (reason & MCSR_CP_PERR)
printk("Cache Push Parity Error\n");
if (reason & MCSR_CPERR)
printk("Cache Parity Error\n");
if (reason & MCSR_EXCP_ERR)
printk("ISI, ITLB, or Bus Error on first instruction fetch for an exception handler\n");
if (reason & MCSR_BUS_IRERR)
printk("Bus - Read Bus Error on instruction fetch\n");
if (reason & MCSR_BUS_DRERR)
printk("Bus - Read Bus Error on data load\n");
if (reason & MCSR_BUS_WRERR)
printk("Bus - Write Bus Error on buffered store or cache line push\n");
#else /* !CONFIG_4xx && !CONFIG_E500 && !CONFIG_E200 */
printk("Machine check in kernel mode.\n");
printk("Caused by (from SRR1=%lx): ", reason);
switch (reason & 0x601F0000) {

2
arch/ppc/mm/fsl_booke_mmu.c
View File

@ -126,7 +126,7 @@ void settlbcam(int index, unsigned long virt, phys_addr_t phys,
flags |= _PAGE_COHERENT;
#endif
TLBCAM[index].MAS0 = MAS0_TLBSEL(1) | MAS0_ESEL(index);
TLBCAM[index].MAS0 = MAS0_TLBSEL(1) | MAS0_ESEL(index) | MAS0_NV(index+1);
TLBCAM[index].MAS1 = MAS1_VALID | MAS1_IPROT | MAS1_TSIZE(tsize) | MAS1_TID(pid);
TLBCAM[index].MAS2 = virt & PAGE_MASK;

2
include/asm-ppc/mmu.h
View File

@ -405,7 +405,7 @@ typedef struct _P601_BAT {
#define MAS0_TLBSEL(x) ((x << 28) & 0x30000000)
#define MAS0_ESEL(x) ((x << 16) & 0x0FFF0000)
#define MAS0_NV 0x00000FFF
#define MAS0_NV(x) ((x) & 0x00000FFF)
#define MAS1_VALID 0x80000000
#define MAS1_IPROT 0x40000000

2
include/asm-ppc/mmu_context.h
View File

@ -63,7 +63,7 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
#define LAST_CONTEXT 255
#define FIRST_CONTEXT 1
#elif defined(CONFIG_E500)
#elif defined(CONFIG_E200) || defined(CONFIG_E500)
#define NO_CONTEXT 256
#define LAST_CONTEXT 255
#define FIRST_CONTEXT 1

2
include/asm-ppc/ppc_asm.h
View File

@ -174,6 +174,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601)
#define CLR_TOP32(r)
#endif /* CONFIG_PPC64BRIDGE */
#define RFCI .long 0x4c000066 /* rfci instruction */
#define RFDI .long 0x4c00004e /* rfdi instruction */
#define RFMCI .long 0x4c00004c /* rfmci instruction */
#ifdef CONFIG_IBM405_ERR77

1
include/asm-ppc/reg.h
View File

@ -160,6 +160,7 @@
#define HID0_ICFI (1<<11) /* Instr. Cache Flash Invalidate */
#define HID0_DCI (1<<10) /* Data Cache Invalidate */
#define HID0_SPD (1<<9) /* Speculative disable */
#define HID0_DAPUEN (1<<8) /* Debug APU enable */
#define HID0_SGE (1<<7) /* Store Gathering Enable */
#define HID0_SIED (1<<7) /* Serial Instr. Execution [Disable] */
#define HID0_DFCA (1<<6) /* Data Cache Flush Assist */

18
include/asm-ppc/reg_booke.h
View File

@ -165,6 +165,8 @@ do { \
#define SPRN_MCSRR1 0x23B /* Machine Check Save and Restore Register 1 */
#define SPRN_MCSR 0x23C /* Machine Check Status Register */
#define SPRN_MCAR 0x23D /* Machine Check Address Register */
#define SPRN_DSRR0 0x23E /* Debug Save and Restore Register 0 */
#define SPRN_DSRR1 0x23F /* Debug Save and Restore Register 1 */
#define SPRN_MAS0 0x270 /* MMU Assist Register 0 */
#define SPRN_MAS1 0x271 /* MMU Assist Register 1 */
#define SPRN_MAS2 0x272 /* MMU Assist Register 2 */
@ -264,6 +266,17 @@ do { \
#define MCSR_BUS_IPERR 0x00000002UL /* Instruction parity Error */
#define MCSR_BUS_RPERR 0x00000001UL /* Read parity Error */
#endif
#ifdef CONFIG_E200
#define MCSR_MCP 0x80000000UL /* Machine Check Input Pin */
#define MCSR_CP_PERR 0x20000000UL /* Cache Push Parity Error */
#define MCSR_CPERR 0x10000000UL /* Cache Parity Error */
#define MCSR_EXCP_ERR 0x08000000UL /* ISI, ITLB, or Bus Error on 1st insn
fetch for an exception handler */
#define MCSR_BUS_IRERR 0x00000010UL /* Read Bus Error on instruction fetch*/
#define MCSR_BUS_DRERR 0x00000008UL /* Read Bus Error on data load */
#define MCSR_BUS_WRERR 0x00000004UL /* Write Bus Error on buffered
store or cache line push */
#endif
/* Bit definitions for the DBSR. */
/*
@ -311,6 +324,7 @@ do { \
#define ESR_ST 0x00800000 /* Store Operation */
#define ESR_DLK 0x00200000 /* Data Cache Locking */
#define ESR_ILK 0x00100000 /* Instr. Cache Locking */
#define ESR_PUO 0x00040000 /* Unimplemented Operation exception */
#define ESR_BO 0x00020000 /* Byte Ordering */
/* Bit definitions related to the DBCR0. */
@ -387,10 +401,12 @@ do { \
#define ICCR_CACHE 1 /* Cacheable */
/* Bit definitions for L1CSR0. */
#define L1CSR0_CLFC 0x00000100 /* Cache Lock Bits Flash Clear */
#define L1CSR0_DCFI 0x00000002 /* Data Cache Flash Invalidate */
#define L1CSR0_CFI 0x00000002 /* Cache Flash Invalidate */
#define L1CSR0_DCE 0x00000001 /* Data Cache Enable */
/* Bit definitions for L1CSR0. */
/* Bit definitions for L1CSR1. */
#define L1CSR1_ICLFR 0x00000100 /* Instr Cache Lock Bits Flash Reset */
#define L1CSR1_ICFI 0x00000002 /* Instr Cache Flash Invalidate */
#define L1CSR1_ICE 0x00000001 /* Instr Cache Enable */