/*
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* Copyright (C) 2012 Renesas Solutions Corp.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <asm/processor.h>
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#include <asm/macro.h>
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.macro or32, addr, data
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mov.l \addr, r1
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mov.l \data, r0
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mov.l @r1, r2
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or r2, r0
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mov.l r0, @r1
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.endm
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.macro wait_DBCMD
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mov.l DBWAIT_A, r0
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mov.l @r0, r1
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.endm
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.global lowlevel_init
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.section .spiboot1.text
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.align 2
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lowlevel_init:
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/*------- GPIO -------*/
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write16 PDCR_A, PDCR_D ! SPI0
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write16 PGCR_A, PGCR_D ! SPI0, GETHER MDIO gate(PTG1)
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write16 PJCR_A, PJCR_D ! SCIF4
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write16 PTCR_A, PTCR_D ! STATUS
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write16 PSEL1_A, PSEL1_D ! SPI0
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write16 PSEL2_A, PSEL2_D ! SPI0
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write16 PSEL5_A, PSEL5_D ! STATUS
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bra exit_gpio
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nop
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.align 2
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/*------- GPIO -------*/
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PDCR_A: .long 0xffec0006
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PGCR_A: .long 0xffec000c
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PJCR_A: .long 0xffec0012
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PTCR_A: .long 0xffec0026
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PSEL1_A: .long 0xffec0072
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PSEL2_A: .long 0xffec0074
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PSEL5_A: .long 0xffec007a
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PDCR_D: .long 0x0000
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PGCR_D: .long 0x0004
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PJCR_D: .long 0x0000
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PTCR_D: .long 0x0000
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PSEL1_D: .long 0x0000
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PSEL2_D: .long 0x3000
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PSEL5_D: .long 0x0ffc
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.align 2
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exit_gpio:
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mov #0, r14
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mova 2f, r0
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mov.l PC_MASK, r1
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tst r0, r1
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bf 2f
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bra exit_pmb
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nop
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.align 2
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/* If CPU runs on SDRAM (PC=0x5???????) or not. */
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PC_MASK: .long 0x20000000
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2:
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mov #1, r14
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mov.l EXPEVT_A, r0
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mov.l @r0, r0
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mov.l EXPEVT_POWER_ON_RESET, r1
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cmp/eq r0, r1
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bt 1f
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/*
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* If EXPEVT value is manual reset or tlb multipul-hit,
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* initialization of DDR3IF is not necessary.
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*/
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bra exit_ddr
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nop
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1:
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/*------- Reset -------*/
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write32 MRSTCR0_A, MRSTCR0_D
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write32 MRSTCR1_A, MRSTCR1_D
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/* For Core Reset */
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mov.l DBACEN_A, r0
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mov.l @r0, r0
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cmp/eq #0, r0
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bt 3f
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/*
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* If DBACEN == 1(DBSC was already enabled), we have to avoid the
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* initialization of DDR3-SDRAM.
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*/
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bra exit_ddr
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nop
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3:
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/*------- DDR3IF -------*/
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/* oscillation stabilization time */
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wait_timer WAIT_OSC_TIME
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/* step 3 */
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write32 DBCMD_A, DBCMD_RSTL_VAL
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wait_timer WAIT_30US
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/* step 4 */
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write32 DBCMD_A, DBCMD_PDEN_VAL
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/* step 5 */
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write32 DBKIND_A, DBKIND_D
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/* step 6 */
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write32 DBCONF_A, DBCONF_D
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write32 DBTR0_A, DBTR0_D
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write32 DBTR1_A, DBTR1_D
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write32 DBTR2_A, DBTR2_D
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write32 DBTR3_A, DBTR3_D
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write32 DBTR4_A, DBTR4_D
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write32 DBTR5_A, DBTR5_D
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write32 DBTR6_A, DBTR6_D
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write32 DBTR7_A, DBTR7_D
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write32 DBTR8_A, DBTR8_D
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write32 DBTR9_A, DBTR9_D
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write32 DBTR10_A, DBTR10_D
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write32 DBTR11_A, DBTR11_D
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write32 DBTR12_A, DBTR12_D
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write32 DBTR13_A, DBTR13_D
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write32 DBTR14_A, DBTR14_D
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write32 DBTR15_A, DBTR15_D
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write32 DBTR16_A, DBTR16_D
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write32 DBTR17_A, DBTR17_D
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write32 DBTR18_A, DBTR18_D
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write32 DBTR19_A, DBTR19_D
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write32 DBRNK0_A, DBRNK0_D
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/* step 7 */
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write32 DBPDCNT3_A, DBPDCNT3_D
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/* step 8 */
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write32 DBPDCNT1_A, DBPDCNT1_D
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write32 DBPDCNT2_A, DBPDCNT2_D
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write32 DBPDLCK_A, DBPDLCK_D
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write32 DBPDRGA_A, DBPDRGA_D
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write32 DBPDRGD_A, DBPDRGD_D
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/* step 9 */
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wait_timer WAIT_30US
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/* step 10 */
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write32 DBPDCNT0_A, DBPDCNT0_D
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/* step 11 */
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wait_timer WAIT_30US
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wait_timer WAIT_30US
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/* step 12 */
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write32 DBCMD_A, DBCMD_WAIT_VAL
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wait_DBCMD
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/* step 13 */
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write32 DBCMD_A, DBCMD_RSTH_VAL
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wait_DBCMD
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/* step 14 */
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write32 DBCMD_A, DBCMD_WAIT_VAL
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write32 DBCMD_A, DBCMD_WAIT_VAL
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write32 DBCMD_A, DBCMD_WAIT_VAL
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write32 DBCMD_A, DBCMD_WAIT_VAL
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/* step 15 */
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write32 DBCMD_A, DBCMD_PDXT_VAL
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/* step 16 */
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write32 DBCMD_A, DBCMD_MRS2_VAL
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/* step 17 */
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write32 DBCMD_A, DBCMD_MRS3_VAL
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/* step 18 */
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write32 DBCMD_A, DBCMD_MRS1_VAL
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/* step 19 */
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write32 DBCMD_A, DBCMD_MRS0_VAL
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/* step 20 */
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write32 DBCMD_A, DBCMD_ZQCL_VAL
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write32 DBCMD_A, DBCMD_REF_VAL
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write32 DBCMD_A, DBCMD_REF_VAL
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wait_DBCMD
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/* step 21 */
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write32 DBADJ0_A, DBADJ0_D
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write32 DBADJ1_A, DBADJ1_D
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write32 DBADJ2_A, DBADJ2_D
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/* step 22 */
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write32 DBRFCNF0_A, DBRFCNF0_D
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write32 DBRFCNF1_A, DBRFCNF1_D
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write32 DBRFCNF2_A, DBRFCNF2_D
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/* step 23 */
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write32 DBCALCNF_A, DBCALCNF_D
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/* step 24 */
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write32 DBRFEN_A, DBRFEN_D
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write32 DBCMD_A, DBCMD_SRXT_VAL
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/* step 25 */
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write32 DBACEN_A, DBACEN_D
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/* step 26 */
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wait_DBCMD
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bra exit_ddr
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nop
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.align 2
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EXPEVT_A: .long 0xff000024
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EXPEVT_POWER_ON_RESET: .long 0x00000000
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/*------- Reset -------*/
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MRSTCR0_A: .long 0xffd50030
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MRSTCR0_D: .long 0xfe1ffe7f
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MRSTCR1_A: .long 0xffd50034
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MRSTCR1_D: .long 0xfff3ffff
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/*------- DDR3IF -------*/
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DBCMD_A: .long 0xfe800018
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DBKIND_A: .long 0xfe800020
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DBCONF_A: .long 0xfe800024
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DBTR0_A: .long 0xfe800040
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DBTR1_A: .long 0xfe800044
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DBTR2_A: .long 0xfe800048
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DBTR3_A: .long 0xfe800050
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DBTR4_A: .long 0xfe800054
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DBTR5_A: .long 0xfe800058
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DBTR6_A: .long 0xfe80005c
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DBTR7_A: .long 0xfe800060
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DBTR8_A: .long 0xfe800064
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DBTR9_A: .long 0xfe800068
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DBTR10_A: .long 0xfe80006c
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DBTR11_A: .long 0xfe800070
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DBTR12_A: .long 0xfe800074
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DBTR13_A: .long 0xfe800078
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DBTR14_A: .long 0xfe80007c
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DBTR15_A: .long 0xfe800080
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DBTR16_A: .long 0xfe800084
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DBTR17_A: .long 0xfe800088
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DBTR18_A: .long 0xfe80008c
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DBTR19_A: .long 0xfe800090
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DBRNK0_A: .long 0xfe800100
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DBPDCNT0_A: .long 0xfe800200
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DBPDCNT1_A: .long 0xfe800204
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DBPDCNT2_A: .long 0xfe800208
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DBPDCNT3_A: .long 0xfe80020c
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DBPDLCK_A: .long 0xfe800280
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DBPDRGA_A: .long 0xfe800290
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DBPDRGD_A: .long 0xfe8002a0
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DBADJ0_A: .long 0xfe8000c0
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DBADJ1_A: .long 0xfe8000c4
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DBADJ2_A: .long 0xfe8000c8
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DBRFCNF0_A: .long 0xfe8000e0
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DBRFCNF1_A: .long 0xfe8000e4
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DBRFCNF2_A: .long 0xfe8000e8
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DBCALCNF_A: .long 0xfe8000f4
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DBRFEN_A: .long 0xfe800014
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DBACEN_A: .long 0xfe800010
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DBWAIT_A: .long 0xfe80001c
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WAIT_OSC_TIME: .long 6000
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WAIT_30US: .long 13333
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DBCMD_RSTL_VAL: .long 0x20000000
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DBCMD_PDEN_VAL: .long 0x1000d73c
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DBCMD_WAIT_VAL: .long 0x0000d73c
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DBCMD_RSTH_VAL: .long 0x2100d73c
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DBCMD_PDXT_VAL: .long 0x110000c8
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DBCMD_MRS0_VAL: .long 0x28000930
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DBCMD_MRS1_VAL: .long 0x29000004
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DBCMD_MRS2_VAL: .long 0x2a000008
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DBCMD_MRS3_VAL: .long 0x2b000000
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DBCMD_ZQCL_VAL: .long 0x03000200
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DBCMD_REF_VAL: .long 0x0c000000
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DBCMD_SRXT_VAL: .long 0x19000000
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DBKIND_D: .long 0x00000007
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DBCONF_D: .long 0x0f030a01
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DBTR0_D: .long 0x00000007
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DBTR1_D: .long 0x00000006
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DBTR2_D: .long 0x00000000
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DBTR3_D: .long 0x00000007
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DBTR4_D: .long 0x00070007
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DBTR5_D: .long 0x0000001b
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DBTR6_D: .long 0x00000014
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DBTR7_D: .long 0x00000005
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DBTR8_D: .long 0x00000015
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DBTR9_D: .long 0x00000006
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DBTR10_D: .long 0x00000008
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DBTR11_D: .long 0x00000007
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DBTR12_D: .long 0x0000000e
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DBTR13_D: .long 0x00000056
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DBTR14_D: .long 0x00000006
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DBTR15_D: .long 0x00000004
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DBTR16_D: .long 0x00150002
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DBTR17_D: .long 0x000c0017
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DBTR18_D: .long 0x00000200
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DBTR19_D: .long 0x00000040
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DBRNK0_D: .long 0x00000001
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DBPDCNT0_D: .long 0x00000001
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DBPDCNT1_D: .long 0x00000001
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DBPDCNT2_D: .long 0x00000000
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DBPDCNT3_D: .long 0x00004010
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DBPDLCK_D: .long 0x0000a55a
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DBPDRGA_D: .long 0x00000028
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DBPDRGD_D: .long 0x00017100
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DBADJ0_D: .long 0x00000000
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DBADJ1_D: .long 0x00000000
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DBADJ2_D: .long 0x18061806
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DBRFCNF0_D: .long 0x000001ff
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DBRFCNF1_D: .long 0x08001000
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DBRFCNF2_D: .long 0x00000000
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DBCALCNF_D: .long 0x0000ffff
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DBRFEN_D: .long 0x00000001
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DBACEN_D: .long 0x00000001
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.align 2
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exit_ddr:
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#if defined(CONFIG_SH_32BIT)
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/*------- set PMB -------*/
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write32 PASCR_A, PASCR_29BIT_D
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write32 MMUCR_A, MMUCR_D
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/*****************************************************************
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* ent virt phys v sz c wt
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* 0 0xa0000000 0x00000000 1 128M 0 1
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* 1 0xa8000000 0x48000000 1 128M 0 1
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* 5 0x88000000 0x48000000 1 128M 1 1
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*/
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write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D
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write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D
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write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D
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write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D
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write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D
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write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D
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write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D
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write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D
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write32 PASCR_A, PASCR_INIT
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mov.l DUMMY_ADDR, r0
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icbi @r0
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#endif /* if defined(CONFIG_SH_32BIT) */
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exit_pmb:
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/* CPU is running on ILRAM? */
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mov r14, r0
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tst #1, r0
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bt 1f
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mov.l _stack_ilram, r15
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mov.l _spiboot_main, r0
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100: bsrf r0
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nop
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.align 2
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_spiboot_main: .long (spiboot_main - (100b + 4))
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_stack_ilram: .long 0xe5204000
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1:
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write32 CCR_A, CCR_D
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rts
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nop
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.align 2
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#if defined(CONFIG_SH_32BIT)
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/*------- set PMB -------*/
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PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0)
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PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1)
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PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5)
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PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2)
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PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3)
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PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4)
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PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6)
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PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7)
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PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8)
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PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9)
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PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10)
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PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11)
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PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12)
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PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13)
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PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14)
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PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15)
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PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0)
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PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88)
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PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8)
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PMB_ADDR_NOT_USE_D: .long 0x00000000
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PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0)
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PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1)
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PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5)
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/* ppn ub v s1 s0 c wt */
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PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
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PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
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PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)
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PASCR_A: .long 0xff000070
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DUMMY_ADDR: .long 0xa0000000
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PASCR_29BIT_D: .long 0x00000000
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PASCR_INIT: .long 0x80000080
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MMUCR_A: .long 0xff000010
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MMUCR_D: .long 0x00000004 /* clear ITLB */
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#endif /* CONFIG_SH_32BIT */
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CCR_A: .long CCR
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CCR_D: .long CCR_CACHE_INIT
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