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MN10300: Add CPU register bits for AM34

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Add CPU register declarations for the AM34 subarch.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Akira Takeuchi 2010-10-27 17:28:40 +01:00 committed by David Howells
parent 06019be31a
commit 8fbbf7c76a
2 changed files with 74 additions and 5 deletions
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7
arch/mn10300/Kconfig
View File

@ -17,6 +17,7 @@ config AM33_3
config AM34_2
def_bool n
select MN10300_HAS_ATOMIC_OPS_UNIT
config MMU
def_bool y
@ -124,6 +125,12 @@ config MN10300_CPU_AM33V2
endchoice
config MN10300_HAS_ATOMIC_OPS_UNIT
def_bool n
help
This should be enabled if the processor has an atomic ops unit
capable of doing LL/SC equivalent operations.
config FPU
bool "FPU present"
default y

72
arch/mn10300/include/asm/cpu-regs.h
View File

@ -15,7 +15,6 @@
#include <linux/types.h>
#endif
#ifdef CONFIG_MN10300_CPU_AM33V2
/* we tell the compiler to pretend to be AM33 so that it doesn't try and use
* the FP regs, but tell the assembler that we're actually allowed AM33v2
* instructions */
@ -24,7 +23,6 @@ asm(" .am33_2\n");
#else
.am33_2
#endif
#endif
#ifdef __KERNEL__
@ -58,6 +56,9 @@ asm(" .am33_2\n");
#define EPSW_nAR 0x00040000 /* register bank control */
#define EPSW_ML 0x00080000 /* monitor level */
#define EPSW_FE 0x00100000 /* FPU enable */
#define EPSW_IM_SHIFT 8 /* EPSW_IM_SHIFT determines the interrupt mode */
#define NUM2EPSW_IM(num) ((num) << EPSW_IM_SHIFT)
/* FPU registers */
#define FPCR_EF_I 0x00000001 /* inexact result FPU exception flag */
@ -99,9 +100,11 @@ asm(" .am33_2\n");
#define CPUREV __SYSREGC(0xc0000050, u32) /* CPU revision register */
#define CPUREV_TYPE 0x0000000f /* CPU type */
#define CPUREV_TYPE_S 0
#define CPUREV_TYPE_AM33V1 0x00000000 /* - AM33 V1 core, AM33/1.00 arch */
#define CPUREV_TYPE_AM33V2 0x00000001 /* - AM33 V2 core, AM33/2.00 arch */
#define CPUREV_TYPE_AM34V1 0x00000002 /* - AM34 V1 core, AM33/2.00 arch */
#define CPUREV_TYPE_AM33_1 0x00000000 /* - AM33-1 core, AM33/1.00 arch */
#define CPUREV_TYPE_AM33_2 0x00000001 /* - AM33-2 core, AM33/2.00 arch */
#define CPUREV_TYPE_AM34_1 0x00000002 /* - AM34-1 core, AM33/2.00 arch */
#define CPUREV_TYPE_AM33_3 0x00000003 /* - AM33-3 core, AM33/2.00 arch */
#define CPUREV_TYPE_AM34_2 0x00000004 /* - AM34-2 core, AM33/3.00 arch */
#define CPUREV_REVISION 0x000000f0 /* CPU revision */
#define CPUREV_REVISION_S 4
#define CPUREV_ICWAY 0x00000f00 /* number of instruction cache ways */
@ -180,6 +183,21 @@ asm(" .am33_2\n");
#define CHCTR_ICWMD 0x0f00 /* instruction cache way mode */
#define CHCTR_DCWMD 0xf000 /* data cache way mode */
#ifdef CONFIG_AM34_2
#define ICIVCR __SYSREG(0xc0000c00, u32) /* icache area invalidate control */
#define ICIVCR_ICIVBSY 0x00000008 /* icache area invalidate busy */
#define ICIVCR_ICI 0x00000001 /* icache area invalidate */
#define ICIVMR __SYSREG(0xc0000c04, u32) /* icache area invalidate mask */
#define DCPGCR __SYSREG(0xc0000c10, u32) /* data cache area purge control */
#define DCPGCR_DCPGBSY 0x00000008 /* data cache area purge busy */
#define DCPGCR_DCP 0x00000002 /* data cache area purge */
#define DCPGCR_DCI 0x00000001 /* data cache area invalidate */
#define DCPGMR __SYSREG(0xc0000c14, u32) /* data cache area purge mask */
#endif /* CONFIG_AM34_2 */
/* MMU control registers */
#define MMUCTR __SYSREG(0xc0000090, u32) /* MMU control register */
#define MMUCTR_IRP 0x0000003f /* instruction TLB replace pointer */
@ -203,6 +221,9 @@ asm(" .am33_2\n");
#define MMUCTR_DTL_LOCK0_3 0x03000000 /* - entry 0-3 locked */
#define MMUCTR_DTL_LOCK0_7 0x04000000 /* - entry 0-7 locked */
#define MMUCTR_DTL_LOCK0_15 0x05000000 /* - entry 0-15 locked */
#ifdef CONFIG_AM34_2
#define MMUCTR_WTE 0x80000000 /* write-through cache TLB entry bit enable */
#endif
#define PIDR __SYSREG(0xc0000094, u16) /* PID register */
#define PIDR_PID 0x00ff /* process identifier */
@ -285,6 +306,47 @@ asm(" .am33_2\n");
#define MMUFCR_xFC_PR_RWK_RWU 0x01c0 /* - R/W kernel and R/W user */
#define MMUFCR_xFC_ILLADDR 0x0200 /* illegal address excep flag */
#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
/* atomic operation registers */
#define AAR __SYSREG(0xc0000a00, u32) /* cacheable address */
#define AAR2 __SYSREG(0xc0000a04, u32) /* uncacheable address */
#define ADR __SYSREG(0xc0000a08, u32) /* data */
#define ASR __SYSREG(0xc0000a0c, u32) /* status */
#define AARU __SYSREG(0xd400aa00, u32) /* user address */
#define ADRU __SYSREG(0xd400aa08, u32) /* user data */
#define ASRU __SYSREG(0xd400aa0c, u32) /* user status */
#define ASR_RW 0x00000008 /* read */
#define ASR_BW 0x00000004 /* bus error */
#define ASR_IW 0x00000002 /* interrupt */
#define ASR_LW 0x00000001 /* bus lock */
#define ASRU_RW ASR_RW /* read */
#define ASRU_BW ASR_BW /* bus error */
#define ASRU_IW ASR_IW /* interrupt */
#define ASRU_LW ASR_LW /* bus lock */
/* in inline ASM, we stick the base pointer in to a reg and use offsets from
* it */
#define ATOMIC_OPS_BASE_ADDR 0xc0000a00
#ifndef __ASSEMBLY__
asm(
"_AAR = 0\n"
"_AAR2 = 4\n"
"_ADR = 8\n"
"_ASR = 12\n");
#else
#define _AAR 0
#define _AAR2 4
#define _ADR 8
#define _ASR 12
#endif
/* physical page address for userspace atomic operations registers */
#define USER_ATOMIC_OPS_PAGE_ADDR 0xd400a000
#endif /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */
#endif /* __KERNEL__ */
#endif /* _ASM_CPU_REGS_H */