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106 lines
3.5 KiB
106 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* IXP4XX cpu type detection |
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* |
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* Copyright (C) 2007 MontaVista Software, Inc. |
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*/ |
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#ifndef __SOC_IXP4XX_CPU_H__ |
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#define __SOC_IXP4XX_CPU_H__ |
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#include <linux/io.h> |
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#ifdef CONFIG_ARM |
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#include <asm/cputype.h> |
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#endif |
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/* Processor id value in CP15 Register 0 */ |
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#define IXP42X_PROCESSOR_ID_VALUE 0x690541c0 /* including unused 0x690541Ex */ |
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#define IXP42X_PROCESSOR_ID_MASK 0xffffffc0 |
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#define IXP43X_PROCESSOR_ID_VALUE 0x69054040 |
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#define IXP43X_PROCESSOR_ID_MASK 0xfffffff0 |
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#define IXP46X_PROCESSOR_ID_VALUE 0x69054200 /* including IXP455 */ |
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#define IXP46X_PROCESSOR_ID_MASK 0xfffffff0 |
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/* "fuse" bits of IXP_EXP_CFG2 */ |
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/* All IXP4xx CPUs */ |
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#define IXP4XX_FEATURE_RCOMP (1 << 0) |
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#define IXP4XX_FEATURE_USB_DEVICE (1 << 1) |
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#define IXP4XX_FEATURE_HASH (1 << 2) |
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#define IXP4XX_FEATURE_AES (1 << 3) |
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#define IXP4XX_FEATURE_DES (1 << 4) |
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#define IXP4XX_FEATURE_HDLC (1 << 5) |
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#define IXP4XX_FEATURE_AAL (1 << 6) |
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#define IXP4XX_FEATURE_HSS (1 << 7) |
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#define IXP4XX_FEATURE_UTOPIA (1 << 8) |
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#define IXP4XX_FEATURE_NPEB_ETH0 (1 << 9) |
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#define IXP4XX_FEATURE_NPEC_ETH (1 << 10) |
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#define IXP4XX_FEATURE_RESET_NPEA (1 << 11) |
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#define IXP4XX_FEATURE_RESET_NPEB (1 << 12) |
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#define IXP4XX_FEATURE_RESET_NPEC (1 << 13) |
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#define IXP4XX_FEATURE_PCI (1 << 14) |
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#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16) |
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#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22) |
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#define IXP42X_FEATURE_MASK (IXP4XX_FEATURE_RCOMP | \ |
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IXP4XX_FEATURE_USB_DEVICE | \ |
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IXP4XX_FEATURE_HASH | \ |
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IXP4XX_FEATURE_AES | \ |
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IXP4XX_FEATURE_DES | \ |
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IXP4XX_FEATURE_HDLC | \ |
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IXP4XX_FEATURE_AAL | \ |
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IXP4XX_FEATURE_HSS | \ |
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IXP4XX_FEATURE_UTOPIA | \ |
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IXP4XX_FEATURE_NPEB_ETH0 | \ |
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IXP4XX_FEATURE_NPEC_ETH | \ |
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IXP4XX_FEATURE_RESET_NPEA | \ |
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IXP4XX_FEATURE_RESET_NPEB | \ |
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IXP4XX_FEATURE_RESET_NPEC | \ |
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IXP4XX_FEATURE_PCI | \ |
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IXP4XX_FEATURE_UTOPIA_PHY_LIMIT | \ |
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IXP4XX_FEATURE_XSCALE_MAX_FREQ) |
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/* IXP43x/46x CPUs */ |
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#define IXP4XX_FEATURE_ECC_TIMESYNC (1 << 15) |
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#define IXP4XX_FEATURE_USB_HOST (1 << 18) |
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#define IXP4XX_FEATURE_NPEA_ETH (1 << 19) |
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#define IXP43X_FEATURE_MASK (IXP42X_FEATURE_MASK | \ |
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IXP4XX_FEATURE_ECC_TIMESYNC | \ |
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IXP4XX_FEATURE_USB_HOST | \ |
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IXP4XX_FEATURE_NPEA_ETH) |
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/* IXP46x CPU (including IXP455) only */ |
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#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3 (1 << 20) |
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#define IXP4XX_FEATURE_RSA (1 << 21) |
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#define IXP46X_FEATURE_MASK (IXP43X_FEATURE_MASK | \ |
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IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \ |
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IXP4XX_FEATURE_RSA) |
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#ifdef CONFIG_ARCH_IXP4XX |
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#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \ |
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IXP42X_PROCESSOR_ID_VALUE) |
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#define cpu_is_ixp42x() ((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \ |
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IXP42X_PROCESSOR_ID_VALUE) |
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#define cpu_is_ixp43x() ((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \ |
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IXP43X_PROCESSOR_ID_VALUE) |
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#define cpu_is_ixp46x() ((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \ |
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IXP46X_PROCESSOR_ID_VALUE) |
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u32 ixp4xx_read_feature_bits(void); |
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void ixp4xx_write_feature_bits(u32 value); |
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#else |
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#define cpu_is_ixp42x_rev_a0() 0 |
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#define cpu_is_ixp42x() 0 |
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#define cpu_is_ixp43x() 0 |
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#define cpu_is_ixp46x() 0 |
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static inline u32 ixp4xx_read_feature_bits(void) |
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{ |
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return 0; |
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} |
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static inline void ixp4xx_write_feature_bits(u32 value) |
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{ |
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} |
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#endif |
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#endif /* _ASM_ARCH_CPU_H */
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