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u-boot/board/renesas/sh7753evb/lowlevel_init.S
Yoshihiro Shimoda 320cf35080 sh: add support for sh7753evb board 
The SH7753 EVB board has SH7753, 512MB DDR3-SDRAM, SPI ROM,
Gigabit Ethernet, and eMMC.

This patch support the following functions:
 - 512MB DDR3-SDRAM, SCIF4, SPI ROM, Gigabit Ethernet, eMMC

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-12-18 16:49:08 +09:00

416 lines
9.3 KiB
ArmAsm
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/*
* Copyright (C) 2013 Renesas Solutions Corp.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <version.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
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