| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2013 Renesas Solutions Corp. |
| */ |
| |
| #include <config.h> |
| #include <asm/processor.h> |
| #include <asm/macro.h> |
| |
| .macro or32, addr, data |
| mov.l \addr, r1 |
| mov.l \data, r0 |
| mov.l @r1, r2 |
| or r2, r0 |
| mov.l r0, @r1 |
| .endm |
| |
| .macro wait_DBCMD |
| mov.l DBWAIT_A, r0 |
| mov.l @r0, r1 |
| .endm |
| |
| .global lowlevel_init |
| .section .spiboot1.text |
| .align 2 |
| |
| lowlevel_init: |
| mov #0, r14 |
| mova 2f, r0 |
| mov.l PC_MASK, r1 |
| tst r0, r1 |
| bf 2f |
| |
| bra exit_pmb |
| nop |
| |
| .align 2 |
| |
| /* If CPU runs on SDRAM (PC=0x5???????) or not. */ |
| PC_MASK: .long 0x20000000 |
| |
| 2: |
| mov #1, r14 |
| |
| mov.l EXPEVT_A, r0 |
| mov.l @r0, r0 |
| mov.l EXPEVT_POWER_ON_RESET, r1 |
| cmp/eq r0, r1 |
| bt 1f |
| |
| /* |
| * If EXPEVT value is manual reset or tlb multipul-hit, |
| * initialization of DBSC3 is not necessary. |
| */ |
| bra exit_ddr |
| nop |
| |
| 1: |
| /*------- Reset -------*/ |
| write32 MRSTCR0_A, MRSTCR0_D |
| write32 MRSTCR1_A, MRSTCR1_D |
| |
| /* For Core Reset */ |
| mov.l DBACEN_A, r0 |
| mov.l @r0, r0 |
| cmp/eq #0, r0 |
| bt 3f |
| |
| /* |
| * If DBACEN == 1(DBSC was already enabled), we have to avoid the |
| * initialization of DDR3-SDRAM. |
| */ |
| bra exit_ddr |
| nop |
| |
| 3: |
| /*------- DBSC3 -------*/ |
| /* oscillation stabilization time */ |
| wait_timer WAIT_OSC_TIME |
| |
| /* step 3 */ |
| write32 DBKIND_A, DBKIND_D |
| |
| /* step 4 */ |
| write32 DBCONF_A, DBCONF_D |
| write32 DBTR0_A, DBTR0_D |
| write32 DBTR1_A, DBTR1_D |
| write32 DBTR2_A, DBTR2_D |
| write32 DBTR3_A, DBTR3_D |
| write32 DBTR4_A, DBTR4_D |
| write32 DBTR5_A, DBTR5_D |
| write32 DBTR6_A, DBTR6_D |
| write32 DBTR7_A, DBTR7_D |
| write32 DBTR8_A, DBTR8_D |
| write32 DBTR9_A, DBTR9_D |
| write32 DBTR10_A, DBTR10_D |
| write32 DBTR11_A, DBTR11_D |
| write32 DBTR12_A, DBTR12_D |
| write32 DBTR13_A, DBTR13_D |
| write32 DBTR14_A, DBTR14_D |
| write32 DBTR15_A, DBTR15_D |
| write32 DBTR16_A, DBTR16_D |
| write32 DBTR17_A, DBTR17_D |
| write32 DBTR18_A, DBTR18_D |
| write32 DBTR19_A, DBTR19_D |
| write32 DBRNK0_A, DBRNK0_D |
| write32 DBADJ0_A, DBADJ0_D |
| write32 DBADJ2_A, DBADJ2_D |
| |
| /* step 5 */ |
| write32 DBCMD_A, DBCMD_RSTL_VAL |
| wait_timer WAIT_30US |
| |
| /* step 6 */ |
| write32 DBCMD_A, DBCMD_PDEN_VAL |
| |
| /* step 7 */ |
| write32 DBPDCNT3_A, DBPDCNT3_D |
| |
| /* step 8 */ |
| write32 DBPDCNT1_A, DBPDCNT1_D |
| write32 DBPDCNT2_A, DBPDCNT2_D |
| write32 DBPDLCK_A, DBPDLCK_D |
| write32 DBPDRGA_A, DBPDRGA_D |
| write32 DBPDRGD_A, DBPDRGD_D |
| |
| /* step 9 */ |
| wait_timer WAIT_30US |
| |
| /* step 10 */ |
| write32 DBPDCNT0_A, DBPDCNT0_D |
| |
| /* step 11 */ |
| wait_timer WAIT_30US |
| wait_timer WAIT_30US |
| |
| /* step 12 */ |
| write32 DBCMD_A, DBCMD_WAIT_VAL |
| wait_DBCMD |
| |
| /* step 13 */ |
| write32 DBCMD_A, DBCMD_RSTH_VAL |
| wait_DBCMD |
| |
| /* step 14 */ |
| write32 DBCMD_A, DBCMD_WAIT_VAL |
| write32 DBCMD_A, DBCMD_WAIT_VAL |
| write32 DBCMD_A, DBCMD_WAIT_VAL |
| write32 DBCMD_A, DBCMD_WAIT_VAL |
| |
| /* step 15 */ |
| write32 DBCMD_A, DBCMD_PDXT_VAL |
| |
| /* step 16 */ |
| write32 DBCMD_A, DBCMD_MRS2_VAL |
| |
| /* step 17 */ |
| write32 DBCMD_A, DBCMD_MRS3_VAL |
| |
| /* step 18 */ |
| write32 DBCMD_A, DBCMD_MRS1_VAL |
| |
| /* step 19 */ |
| write32 DBCMD_A, DBCMD_MRS0_VAL |
| write32 DBPDNCNF_A, DBPDNCNF_D |
| |
| /* step 20 */ |
| write32 DBCMD_A, DBCMD_ZQCL_VAL |
| |
| write32 DBCMD_A, DBCMD_REF_VAL |
| write32 DBCMD_A, DBCMD_REF_VAL |
| wait_DBCMD |
| |
| /* step 21 */ |
| write32 DBCALTR_A, DBCALTR_D |
| |
| /* step 22 */ |
| write32 DBRFCNF0_A, DBRFCNF0_D |
| write32 DBRFCNF1_A, DBRFCNF1_D |
| write32 DBRFCNF2_A, DBRFCNF2_D |
| |
| /* step 23 */ |
| write32 DBCALCNF_A, DBCALCNF_D |
| |
| /* step 24 */ |
| write32 DBRFEN_A, DBRFEN_D |
| write32 DBCMD_A, DBCMD_SRXT_VAL |
| |
| /* step 25 */ |
| write32 DBACEN_A, DBACEN_D |
| |
| /* step 26 */ |
| wait_DBCMD |
| |
| bra exit_ddr |
| nop |
| |
| .align 2 |
| |
| EXPEVT_A: .long 0xff000024 |
| EXPEVT_POWER_ON_RESET: .long 0x00000000 |
| |
| /*------- Reset -------*/ |
| MRSTCR0_A: .long 0xffd50030 |
| MRSTCR0_D: .long 0xfe1ffe7f |
| MRSTCR1_A: .long 0xffd50034 |
| MRSTCR1_D: .long 0xfff3ffff |
| |
| /*------- DBSC3 -------*/ |
| DBCMD_A: .long 0xfe800018 |
| DBKIND_A: .long 0xfe800020 |
| DBCONF_A: .long 0xfe800024 |
| DBTR0_A: .long 0xfe800040 |
| DBTR1_A: .long 0xfe800044 |
| DBTR2_A: .long 0xfe800048 |
| DBTR3_A: .long 0xfe800050 |
| DBTR4_A: .long 0xfe800054 |
| DBTR5_A: .long 0xfe800058 |
| DBTR6_A: .long 0xfe80005c |
| DBTR7_A: .long 0xfe800060 |
| DBTR8_A: .long 0xfe800064 |
| DBTR9_A: .long 0xfe800068 |
| DBTR10_A: .long 0xfe80006c |
| DBTR11_A: .long 0xfe800070 |
| DBTR12_A: .long 0xfe800074 |
| DBTR13_A: .long 0xfe800078 |
| DBTR14_A: .long 0xfe80007c |
| DBTR15_A: .long 0xfe800080 |
| DBTR16_A: .long 0xfe800084 |
| DBTR17_A: .long 0xfe800088 |
| DBTR18_A: .long 0xfe80008c |
| DBTR19_A: .long 0xfe800090 |
| DBRNK0_A: .long 0xfe800100 |
| DBPDCNT0_A: .long 0xfe800200 |
| DBPDCNT1_A: .long 0xfe800204 |
| DBPDCNT2_A: .long 0xfe800208 |
| DBPDCNT3_A: .long 0xfe80020c |
| DBPDLCK_A: .long 0xfe800280 |
| DBPDRGA_A: .long 0xfe800290 |
| DBPDRGD_A: .long 0xfe8002a0 |
| DBADJ0_A: .long 0xfe8000c0 |
| DBADJ2_A: .long 0xfe8000c8 |
| DBRFCNF0_A: .long 0xfe8000e0 |
| DBRFCNF1_A: .long 0xfe8000e4 |
| DBRFCNF2_A: .long 0xfe8000e8 |
| DBCALCNF_A: .long 0xfe8000f4 |
| DBRFEN_A: .long 0xfe800014 |
| DBACEN_A: .long 0xfe800010 |
| DBWAIT_A: .long 0xfe80001c |
| DBCALTR_A: .long 0xfe8000f8 |
| DBPDNCNF_A: .long 0xfe800180 |
| |
| WAIT_OSC_TIME: .long 6000 |
| WAIT_30US: .long 13333 |
| |
| DBCMD_RSTL_VAL: .long 0x20000000 |
| DBCMD_PDEN_VAL: .long 0x1000d73c |
| DBCMD_WAIT_VAL: .long 0x0000d73c |
| DBCMD_RSTH_VAL: .long 0x2100d73c |
| DBCMD_PDXT_VAL: .long 0x110000c8 |
| DBCMD_MRS0_VAL: .long 0x28000930 |
| DBCMD_MRS1_VAL: .long 0x29000004 |
| DBCMD_MRS2_VAL: .long 0x2a000008 |
| DBCMD_MRS3_VAL: .long 0x2b000000 |
| DBCMD_ZQCL_VAL: .long 0x03000200 |
| DBCMD_REF_VAL: .long 0x0c000000 |
| DBCMD_SRXT_VAL: .long 0x19000000 |
| DBKIND_D: .long 0x00000007 |
| DBCONF_D: .long 0x0f030a01 |
| DBTR0_D: .long 0x00000007 |
| DBTR1_D: .long 0x00000006 |
| DBTR2_D: .long 0x00000000 |
| DBTR3_D: .long 0x00000007 |
| DBTR4_D: .long 0x00070007 |
| DBTR5_D: .long 0x0000001b |
| DBTR6_D: .long 0x00000014 |
| DBTR7_D: .long 0x00000004 |
| DBTR8_D: .long 0x00000014 |
| DBTR9_D: .long 0x00000004 |
| DBTR10_D: .long 0x00000008 |
| DBTR11_D: .long 0x00000007 |
| DBTR12_D: .long 0x0000000e |
| DBTR13_D: .long 0x000000a0 |
| DBTR14_D: .long 0x00060006 |
| DBTR15_D: .long 0x00000003 |
| DBTR16_D: .long 0x00160002 |
| DBTR17_D: .long 0x000c0000 |
| DBTR18_D: .long 0x00000200 |
| DBTR19_D: .long 0x00000040 |
| DBRNK0_D: .long 0x00000001 |
| DBPDCNT0_D: .long 0x00000001 |
| DBPDCNT1_D: .long 0x00000001 |
| DBPDCNT2_D: .long 0x00000000 |
| DBPDCNT3_D: .long 0x00004010 |
| DBPDLCK_D: .long 0x0000a55a |
| DBPDRGA_D: .long 0x00000028 |
| DBPDRGD_D: .long 0x00017100 |
| |
| DBADJ0_D: .long 0x00010000 |
| DBADJ2_D: .long 0x18061806 |
| DBRFCNF0_D: .long 0x000001ff |
| DBRFCNF1_D: .long 0x00081040 |
| DBRFCNF2_D: .long 0x00000000 |
| DBCALCNF_D: .long 0x0000ffff |
| DBRFEN_D: .long 0x00000001 |
| DBACEN_D: .long 0x00000001 |
| DBCALTR_D: .long 0x08200820 |
| DBPDNCNF_D: .long 0x00000001 |
| |
| .align 2 |
| exit_ddr: |
| #if defined(CONFIG_SH_32BIT) |
| /*------- set PMB -------*/ |
| write32 PASCR_A, PASCR_29BIT_D |
| write32 MMUCR_A, MMUCR_D |
| |
| /***************************************************************** |
| * ent virt phys v sz c wt |
| * 0 0xa0000000 0x00000000 1 128M 0 1 |
| * 1 0xa8000000 0x48000000 1 128M 0 1 |
| * 5 0x88000000 0x48000000 1 128M 1 1 |
| */ |
| write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D |
| write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D |
| write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D |
| write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D |
| write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D |
| write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D |
| |
| write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D |
| write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D |
| |
| write32 PASCR_A, PASCR_INIT |
| mov.l DUMMY_ADDR, r0 |
| icbi @r0 |
| #endif /* if defined(CONFIG_SH_32BIT) */ |
| |
| exit_pmb: |
| /* CPU is running on ILRAM? */ |
| mov r14, r0 |
| tst #1, r0 |
| bt 1f |
| |
| mov.l _stack_ilram, r15 |
| mov.l _spiboot_main, r0 |
| 100: bsrf r0 |
| nop |
| |
| .align 2 |
| _spiboot_main: .long (spiboot_main - (100b + 4)) |
| _stack_ilram: .long 0xe5204000 |
| |
| 1: |
| write32 CCR_A, CCR_D |
| |
| rts |
| nop |
| |
| .align 2 |
| |
| #if defined(CONFIG_SH_32BIT) |
| /*------- set PMB -------*/ |
| PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0) |
| PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1) |
| PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5) |
| PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2) |
| PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3) |
| PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4) |
| PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6) |
| PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7) |
| PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8) |
| PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9) |
| PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10) |
| PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11) |
| PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12) |
| PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13) |
| PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14) |
| PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15) |
| |
| PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0) |
| PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88) |
| PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8) |
| PMB_ADDR_NOT_USE_D: .long 0x00000000 |
| |
| PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0) |
| PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1) |
| PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5) |
| |
| /* ppn ub v s1 s0 c wt */ |
| PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1) |
| PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1) |
| PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1) |
| |
| PASCR_A: .long 0xff000070 |
| DUMMY_ADDR: .long 0xa0000000 |
| PASCR_29BIT_D: .long 0x00000000 |
| PASCR_INIT: .long 0x80000080 |
| MMUCR_A: .long 0xff000010 |
| MMUCR_D: .long 0x00000004 /* clear ITLB */ |
| #endif /* CONFIG_SH_32BIT */ |
| |
| CCR_A: .long CCR |
| CCR_D: .long CCR_CACHE_INIT |
