diff options
Diffstat (limited to 'board/renesas/sh7752evb/lowlevel_init.S')
| -rw-r--r-- | board/renesas/sh7752evb/lowlevel_init.S | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/board/renesas/sh7752evb/lowlevel_init.S b/board/renesas/sh7752evb/lowlevel_init.S new file mode 100644 index 000000000..73c8ac466 --- /dev/null +++ b/board/renesas/sh7752evb/lowlevel_init.S @@ -0,0 +1,460 @@ +/* + * Copyright (C) 2012 Renesas Solutions Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#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: + /*------- GPIO -------*/ + write16 PDCR_A, PDCR_D ! SPI0 + write16 PGCR_A, PGCR_D ! SPI0, GETHER MDIO gate(PTG1) + write16 PJCR_A, PJCR_D ! SCIF4 + write16 PTCR_A, PTCR_D ! STATUS + write16 PSEL1_A, PSEL1_D ! SPI0 + write16 PSEL2_A, PSEL2_D ! SPI0 + write16 PSEL5_A, PSEL5_D ! STATUS + + bra exit_gpio + nop + + .align 2 + +/*------- GPIO -------*/ +PDCR_A: .long 0xffec0006 +PGCR_A: .long 0xffec000c +PJCR_A: .long 0xffec0012 +PTCR_A: .long 0xffec0026 +PSEL1_A: .long 0xffec0072 +PSEL2_A: .long 0xffec0074 +PSEL5_A: .long 0xffec007a + +PDCR_D: .long 0x0000 +PGCR_D: .long 0x0004 +PJCR_D: .long 0x0000 +PTCR_D: .long 0x0000 +PSEL1_D: .long 0x0000 +PSEL2_D: .long 0x3000 +PSEL5_D: .long 0x0ffc + + .align 2 + +exit_gpio: + 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 DDR3IF 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: + /*------- DDR3IF -------*/ + /* oscillation stabilization time */ + wait_timer WAIT_OSC_TIME + + /* step 3 */ + write32 DBCMD_A, DBCMD_RSTL_VAL + wait_timer WAIT_30US + + /* step 4 */ + write32 DBCMD_A, DBCMD_PDEN_VAL + + /* step 5 */ + write32 DBKIND_A, DBKIND_D + + /* step 6 */ + 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 + + /* 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 + + /* 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 DBADJ0_A, DBADJ0_D + write32 DBADJ1_A, DBADJ1_D + write32 DBADJ2_A, DBADJ2_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 + +/*------- DDR3IF -------*/ +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 +DBADJ1_A: .long 0xfe8000c4 +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 + +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 0x00000005 +DBTR8_D: .long 0x00000015 +DBTR9_D: .long 0x00000006 +DBTR10_D: .long 0x00000008 +DBTR11_D: .long 0x00000007 +DBTR12_D: .long 0x0000000e +DBTR13_D: .long 0x00000056 +DBTR14_D: .long 0x00000006 +DBTR15_D: .long 0x00000004 +DBTR16_D: .long 0x00150002 +DBTR17_D: .long 0x000c0017 +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 0x00000000 +DBADJ1_D: .long 0x00000000 +DBADJ2_D: .long 0x18061806 +DBRFCNF0_D: .long 0x000001ff +DBRFCNF1_D: .long 0x08001000 +DBRFCNF2_D: .long 0x00000000 +DBCALCNF_D: .long 0x0000ffff +DBRFEN_D: .long 0x00000001 +DBACEN_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 |