209 lines
6.4 KiB
C
209 lines
6.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PPC_BOOT_DCR_H_
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#define _PPC_BOOT_DCR_H_
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#define mfdcr(rn) \
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({ \
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unsigned long rval; \
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asm volatile("mfdcr %0,%1" : "=r"(rval) : "i"(rn)); \
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rval; \
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})
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#define mtdcr(rn, val) \
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asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val))
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#define mfdcrx(rn) \
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({ \
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unsigned long rval; \
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asm volatile("mfdcrx %0,%1" : "=r"(rval) : "r"(rn)); \
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rval; \
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})
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#define mtdcrx(rn, val) \
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({ \
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asm volatile("mtdcrx %0,%1" : : "r"(rn), "r" (val)); \
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})
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/* 440GP/440GX SDRAM controller DCRs */
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#define DCRN_SDRAM0_CFGADDR 0x010
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#define DCRN_SDRAM0_CFGDATA 0x011
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#define SDRAM0_READ(offset) ({\
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mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
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mfdcr(DCRN_SDRAM0_CFGDATA); })
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#define SDRAM0_WRITE(offset, data) ({\
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mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
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mtdcr(DCRN_SDRAM0_CFGDATA, data); })
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#define SDRAM0_B0CR 0x40
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#define SDRAM0_B1CR 0x44
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#define SDRAM0_B2CR 0x48
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#define SDRAM0_B3CR 0x4c
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static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR,
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SDRAM0_B2CR, SDRAM0_B3CR };
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#define SDRAM_CONFIG_BANK_ENABLE 0x00000001
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#define SDRAM_CONFIG_SIZE_MASK 0x000e0000
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#define SDRAM_CONFIG_BANK_SIZE(reg) \
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(0x00400000 << ((reg & SDRAM_CONFIG_SIZE_MASK) >> 17))
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/* 440GP External Bus Controller (EBC) */
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#define DCRN_EBC0_CFGADDR 0x012
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#define DCRN_EBC0_CFGDATA 0x013
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#define EBC_NUM_BANKS 8
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#define EBC_B0CR 0x00
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#define EBC_B1CR 0x01
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#define EBC_B2CR 0x02
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#define EBC_B3CR 0x03
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#define EBC_B4CR 0x04
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#define EBC_B5CR 0x05
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#define EBC_B6CR 0x06
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#define EBC_B7CR 0x07
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#define EBC_BXCR(n) (n)
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#define EBC_BXCR_BAS 0xfff00000
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#define EBC_BXCR_BS 0x000e0000
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#define EBC_BXCR_BANK_SIZE(reg) \
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(0x100000 << (((reg) & EBC_BXCR_BS) >> 17))
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#define EBC_BXCR_BU 0x00018000
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#define EBC_BXCR_BU_OFF 0x00000000
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#define EBC_BXCR_BU_RO 0x00008000
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#define EBC_BXCR_BU_WO 0x00010000
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#define EBC_BXCR_BU_RW 0x00018000
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#define EBC_BXCR_BW 0x00006000
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#define EBC_B0AP 0x10
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#define EBC_B1AP 0x11
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#define EBC_B2AP 0x12
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#define EBC_B3AP 0x13
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#define EBC_B4AP 0x14
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#define EBC_B5AP 0x15
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#define EBC_B6AP 0x16
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#define EBC_B7AP 0x17
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#define EBC_BXAP(n) (0x10+(n))
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#define EBC_BEAR 0x20
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#define EBC_BESR 0x21
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#define EBC_CFG 0x23
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#define EBC_CID 0x24
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/* 440GP Clock, PM, chip control */
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#define DCRN_CPC0_SR 0x0b0
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#define DCRN_CPC0_ER 0x0b1
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#define DCRN_CPC0_FR 0x0b2
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#define DCRN_CPC0_SYS0 0x0e0
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#define CPC0_SYS0_TUNE 0xffc00000
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#define CPC0_SYS0_FBDV_MASK 0x003c0000
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#define CPC0_SYS0_FWDVA_MASK 0x00038000
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#define CPC0_SYS0_FWDVB_MASK 0x00007000
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#define CPC0_SYS0_OPDV_MASK 0x00000c00
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#define CPC0_SYS0_EPDV_MASK 0x00000300
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/* Helper macros to compute the actual clock divider values from the
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* encodings in the CPC0 register */
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#define CPC0_SYS0_FBDV(reg) \
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((((((reg) & CPC0_SYS0_FBDV_MASK) >> 18) - 1) & 0xf) + 1)
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#define CPC0_SYS0_FWDVA(reg) \
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(8 - (((reg) & CPC0_SYS0_FWDVA_MASK) >> 15))
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#define CPC0_SYS0_FWDVB(reg) \
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(8 - (((reg) & CPC0_SYS0_FWDVB_MASK) >> 12))
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#define CPC0_SYS0_OPDV(reg) \
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((((reg) & CPC0_SYS0_OPDV_MASK) >> 10) + 1)
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#define CPC0_SYS0_EPDV(reg) \
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((((reg) & CPC0_SYS0_EPDV_MASK) >> 8) + 1)
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#define CPC0_SYS0_EXTSL 0x00000080
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#define CPC0_SYS0_RW_MASK 0x00000060
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#define CPC0_SYS0_RL 0x00000010
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#define CPC0_SYS0_ZMIISL_MASK 0x0000000c
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#define CPC0_SYS0_BYPASS 0x00000002
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#define CPC0_SYS0_NTO1 0x00000001
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#define DCRN_CPC0_SYS1 0x0e1
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#define DCRN_CPC0_CUST0 0x0e2
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#define DCRN_CPC0_CUST1 0x0e3
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#define DCRN_CPC0_STRP0 0x0e4
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#define DCRN_CPC0_STRP1 0x0e5
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#define DCRN_CPC0_STRP2 0x0e6
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#define DCRN_CPC0_STRP3 0x0e7
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#define DCRN_CPC0_GPIO 0x0e8
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#define DCRN_CPC0_PLB 0x0e9
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#define DCRN_CPC0_CR1 0x0ea
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#define DCRN_CPC0_CR0 0x0eb
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#define CPC0_CR0_SWE 0x80000000
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#define CPC0_CR0_CETE 0x40000000
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#define CPC0_CR0_U1FCS 0x20000000
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#define CPC0_CR0_U0DTE 0x10000000
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#define CPC0_CR0_U0DRE 0x08000000
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#define CPC0_CR0_U0DC 0x04000000
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#define CPC0_CR0_U1DTE 0x02000000
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#define CPC0_CR0_U1DRE 0x01000000
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#define CPC0_CR0_U1DC 0x00800000
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#define CPC0_CR0_U0EC 0x00400000
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#define CPC0_CR0_U1EC 0x00200000
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#define CPC0_CR0_UDIV_MASK 0x001f0000
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#define CPC0_CR0_UDIV(reg) \
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((((reg) & CPC0_CR0_UDIV_MASK) >> 16) + 1)
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#define DCRN_CPC0_MIRQ0 0x0ec
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#define DCRN_CPC0_MIRQ1 0x0ed
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#define DCRN_CPC0_JTAGID 0x0ef
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#define DCRN_MAL0_CFG 0x180
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#define MAL_RESET 0x80000000
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/* 440EP Clock/Power-on Reset regs */
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#define DCRN_CPR0_ADDR 0xc
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#define DCRN_CPR0_DATA 0xd
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#define CPR0_PLLD0 0x60
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#define CPR0_OPBD0 0xc0
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#define CPR0_PERD0 0xe0
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#define CPR0_PRIMBD0 0xa0
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#define CPR0_SCPID 0x120
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#define CPR0_PLLC0 0x40
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/* 405GP Clocking/Power Management/Chip Control regs */
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#define DCRN_CPC0_PLLMR 0xb0
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#define DCRN_405_CPC0_CR0 0xb1
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#define DCRN_405_CPC0_CR1 0xb2
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#define DCRN_405_CPC0_PSR 0xb4
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/* 405EP Clocking/Power Management/Chip Control regs */
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#define DCRN_CPC0_PLLMR0 0xf0
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#define DCRN_CPC0_PLLMR1 0xf4
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#define DCRN_CPC0_UCR 0xf5
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/* 440GX/405EX Clock Control reg */
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#define DCRN_CPR0_CLKUPD 0x020
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#define DCRN_CPR0_PLLC 0x040
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#define DCRN_CPR0_PLLD 0x060
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#define DCRN_CPR0_PRIMAD 0x080
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#define DCRN_CPR0_PRIMBD 0x0a0
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#define DCRN_CPR0_OPBD 0x0c0
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#define DCRN_CPR0_PERD 0x0e0
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#define DCRN_CPR0_MALD 0x100
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#define DCRN_SDR0_CONFIG_ADDR 0xe
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#define DCRN_SDR0_CONFIG_DATA 0xf
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/* SDR read/write helper macros */
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#define SDR0_READ(offset) ({\
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mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
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mfdcr(DCRN_SDR0_CONFIG_DATA); })
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#define SDR0_WRITE(offset, data) ({\
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mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
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mtdcr(DCRN_SDR0_CONFIG_DATA, data); })
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#define DCRN_SDR0_UART0 0x0120
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#define DCRN_SDR0_UART1 0x0121
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#define DCRN_SDR0_UART2 0x0122
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#define DCRN_SDR0_UART3 0x0123
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/* CPRs read/write helper macros - based off include/asm-ppc/ibm44x.h */
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#define DCRN_CPR0_CFGADDR 0xc
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#define DCRN_CPR0_CFGDATA 0xd
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#define CPR0_READ(offset) ({\
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mtdcr(DCRN_CPR0_CFGADDR, offset); \
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mfdcr(DCRN_CPR0_CFGDATA); })
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#define CPR0_WRITE(offset, data) ({\
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mtdcr(DCRN_CPR0_CFGADDR, offset); \
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mtdcr(DCRN_CPR0_CFGDATA, data); })
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#endif /* _PPC_BOOT_DCR_H_ */
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