diff options
Diffstat (limited to 'board/alphaproject/ap_sh4a_4a/lowlevel_init.S')
| -rw-r--r-- | board/alphaproject/ap_sh4a_4a/lowlevel_init.S | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/board/alphaproject/ap_sh4a_4a/lowlevel_init.S b/board/alphaproject/ap_sh4a_4a/lowlevel_init.S new file mode 100644 index 000000000..f04b36baf --- /dev/null +++ b/board/alphaproject/ap_sh4a_4a/lowlevel_init.S @@ -0,0 +1,459 @@ +/* + * Copyright (C) 2011, 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> + * Copyright (C) 2011, 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. + * + */ +#include <config.h> +#include <version.h> +#include <asm/processor.h> +#include <asm/macro.h> + +#include <asm/processor.h> + + .global lowlevel_init + + .text + .align 2 + +lowlevel_init: + + /* WDT */ + write32 WDTCSR_A, WDTCSR_D + + /* MMU */ + write32 MMUCR_A, MMUCR_D + + write32 FRQCR2_A, FRQCR2_D + write32 FRQCR0_A, FRQCR0_D + + write32 CS0CTRL_A, CS0CTRL_D + write32 CS1CTRL_A, CS1CTRL_D + write32 CS0CTRL2_A, CS0CTRL2_D + + write32 CSPWCR0_A, CSPWCR0_D + write32 CSPWCR1_A, CSPWCR1_D + write32 CS1GDST_A, CS1GDST_D + + # clock mode check + mov.l MODEMR, r1 + mov.l @r1, r0 + and #6, r0 /* Check 1 and 2 bit.*/ + cmp/eq #2, r0 /* 0x02 is 533Mhz mode */ + bt init_lbsc_533 + +init_lbsc_400: + + write32 CSWCR0_A, CSWCR0_D_400 + write32 CSWCR1_A, CSWCR1_D + + bra init_dbsc3_400_pad + nop + + .align 2 + +MODEMR: .long 0xFFCC0020 +WDTCSR_A: .long 0xFFCC0004 +WDTCSR_D: .long 0xA5000000 +MMUCR_A: .long 0xFF000010 +MMUCR_D: .long 0x00000004 + +FRQCR2_A: .long 0xFFC80008 +FRQCR2_D: .long 0x00000000 +FRQCR0_A: .long 0xFFC80000 +FRQCR0_D: .long 0xCF000001 + +CS0CTRL_A: .long 0xFF800200 +CS0CTRL_D: .long 0x00000020 +CS1CTRL_A: .long 0xFF800204 +CS1CTRL_D: .long 0x00000020 + +CS0CTRL2_A: .long 0xFF800220 +CS0CTRL2_D: .long 0x00004000 + +CSPWCR0_A: .long 0xFF800280 +CSPWCR0_D: .long 0x00000000 +CSPWCR1_A: .long 0xFF800284 +CSPWCR1_D: .long 0x00000000 +CS1GDST_A: .long 0xFF8002C0 +CS1GDST_D: .long 0x00000011 + +init_lbsc_533: + + write32 CSWCR0_A, CSWCR0_D_533 + write32 CSWCR1_A, CSWCR1_D + + bra init_dbsc3_533_pad + nop + + .align 2 + +CSWCR0_A: .long 0xFF800230 +CSWCR0_D_533: .long 0x01120104 +CSWCR0_D_400: .long 0x02120114 +CSWCR1_A: .long 0xFF800234 +CSWCR1_D: .long 0x077F077F + +init_dbsc3_400_pad: + + write32 DBPDCNT3_A, DBPDCNT3_D + wait_timer WAIT_200US_400 + + write32 DBPDCNT0_A, DBPDCNT0_D_400 + write32 DBPDCNT3_A, DBPDCNT3_D0 + write32 DBPDCNT1_A, DBPDCNT1_D + + write32 DBPDCNT3_A, DBPDCNT3_D1 + wait_timer WAIT_32MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D2 + wait_timer WAIT_100US_400 + + write32 DBPDCNT3_A, DBPDCNT3_D3 + wait_timer WAIT_16MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D4 + wait_timer WAIT_200US_400 + + write32 DBPDCNT3_A, DBPDCNT3_D5 + wait_timer WAIT_1MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D6 + wait_timer WAIT_10KMCLK + + bra init_dbsc3_ctrl_400 + nop + + .align 2 + +init_dbsc3_533_pad: + + write32 DBPDCNT3_A, DBPDCNT3_D + wait_timer WAIT_200US_533 + + write32 DBPDCNT0_A, DBPDCNT0_D_533 + write32 DBPDCNT3_A, DBPDCNT3_D0 + write32 DBPDCNT1_A, DBPDCNT1_D + + write32 DBPDCNT3_A, DBPDCNT3_D1 + wait_timer WAIT_32MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D2 + wait_timer WAIT_100US_533 + + write32 DBPDCNT3_A, DBPDCNT3_D3 + wait_timer WAIT_16MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D4 + wait_timer WAIT_200US_533 + + write32 DBPDCNT3_A, DBPDCNT3_D5 + wait_timer WAIT_1MCLK + + write32 DBPDCNT3_A, DBPDCNT3_D6 + wait_timer WAIT_10KMCLK + + bra init_dbsc3_ctrl_533 + nop + + .align 2 + +WAIT_200US_400: .long 40000 +WAIT_200US_533: .long 53300 +WAIT_100US_400: .long 20000 +WAIT_100US_533: .long 26650 +WAIT_32MCLK: .long 32 +WAIT_16MCLK: .long 16 +WAIT_1MCLK: .long 1 +WAIT_10KMCLK: .long 10000 + +DBPDCNT0_A: .long 0xFE800200 +DBPDCNT0_D_533: .long 0x00010245 +DBPDCNT0_D_400: .long 0x00010235 +DBPDCNT1_A: .long 0xFE800204 +DBPDCNT1_D: .long 0x00000014 +DBPDCNT3_A: .long 0xFE80020C +DBPDCNT3_D: .long 0x80000000 +DBPDCNT3_D0: .long 0x800F0000 +DBPDCNT3_D1: .long 0x800F1000 +DBPDCNT3_D2: .long 0x820F1000 +DBPDCNT3_D3: .long 0x860F1000 +DBPDCNT3_D4: .long 0x870F1000 +DBPDCNT3_D5: .long 0x870F3000 +DBPDCNT3_D6: .long 0x870F7000 + +init_dbsc3_ctrl_400: + + write32 DBKIND_A, DBKIND_D + write32 DBCONF_A, DBCONF_D + + write32 DBTR0_A, DBTR0_D_400 + write32 DBTR1_A, DBTR1_D_400 + write32 DBTR2_A, DBTR2_D + write32 DBTR3_A, DBTR3_D_400 + write32 DBTR4_A, DBTR4_D_400 + write32 DBTR5_A, DBTR5_D_400 + write32 DBTR6_A, DBTR6_D_400 + write32 DBTR7_A, DBTR7_D + write32 DBTR8_A, DBTR8_D_400 + write32 DBTR9_A, DBTR9_D + write32 DBTR10_A, DBTR10_D_400 + write32 DBTR11_A, DBTR11_D + write32 DBTR12_A, DBTR12_D_400 + write32 DBTR13_A, DBTR13_D_400 + write32 DBTR14_A, DBTR14_D + write32 DBTR15_A, DBTR15_D + write32 DBTR16_A, DBTR16_D_400 + write32 DBTR17_A, DBTR17_D_400 + write32 DBTR18_A, DBTR18_D_400 + + write32 DBBL_A, DBBL_D + write32 DBRNK0_A, DBRNK0_D + + write32 DBCMD_A, DBCMD_D0_400 + write32 DBCMD_A, DBCMD_D1 + write32 DBCMD_A, DBCMD_D2 + write32 DBCMD_A, DBCMD_D3 + write32 DBCMD_A, DBCMD_D4 + write32 DBCMD_A, DBCMD_D5_400 + write32 DBCMD_A, DBCMD_D6 + write32 DBCMD_A, DBCMD_D7 + write32 DBCMD_A, DBCMD_D8 + write32 DBCMD_A, DBCMD_D9_400 + write32 DBCMD_A, DBCMD_D10 + write32 DBCMD_A, DBCMD_D11 + write32 DBCMD_A, DBCMD_D12 + + write32 DBRFCNF0_A, DBRFCNF0_D + write32 DBRFCNF1_A, DBRFCNF1_D_400 + write32 DBRFCNF2_A, DBRFCNF2_D + write32 DBRFEN_A, DBRFEN_D + write32 DBACEN_A, DBACEN_D + write32 DBACEN_A, DBACEN_D + + /* Dummy read */ + mov.l DBWAIT_A, r1 + synco + mov.l @r1, r0 + synco + + /* Dummy read */ + mov.l SDRAM_A, r1 + synco + mov.l @r1, r0 + synco + + /* need sleep 186A0 */ + + bra finish_init_sh7734 + nop + + .align 2 + +init_dbsc3_ctrl_533: + + write32 DBKIND_A, DBKIND_D + write32 DBCONF_A, DBCONF_D + + write32 DBTR0_A, DBTR0_D_533 + write32 DBTR1_A, DBTR1_D_533 + write32 DBTR2_A, DBTR2_D + write32 DBTR3_A, DBTR3_D_533 + write32 DBTR4_A, DBTR4_D_533 + write32 DBTR5_A, DBTR5_D_533 + write32 DBTR6_A, DBTR6_D_533 + write32 DBTR7_A, DBTR7_D + write32 DBTR8_A, DBTR8_D_533 + write32 DBTR9_A, DBTR9_D + write32 DBTR10_A, DBTR10_D_533 + write32 DBTR11_A, DBTR11_D + write32 DBTR12_A, DBTR12_D_533 + write32 DBTR13_A, DBTR13_D_533 + write32 DBTR14_A, DBTR14_D + write32 DBTR15_A, DBTR15_D + write32 DBTR16_A, DBTR16_D_533 + write32 DBTR17_A, DBTR17_D_533 + write32 DBTR18_A, DBTR18_D_533 + + write32 DBBL_A, DBBL_D + write32 DBRNK0_A, DBRNK0_D + + write32 DBCMD_A, DBCMD_D0_533 + write32 DBCMD_A, DBCMD_D1 + write32 DBCMD_A, DBCMD_D2 + write32 DBCMD_A, DBCMD_D3 + write32 DBCMD_A, DBCMD_D4 + write32 DBCMD_A, DBCMD_D5_533 + write32 DBCMD_A, DBCMD_D6 + write32 DBCMD_A, DBCMD_D7 + write32 DBCMD_A, DBCMD_D8 + write32 DBCMD_A, DBCMD_D9_533 + write32 DBCMD_A, DBCMD_D10 + write32 DBCMD_A, DBCMD_D11 + write32 DBCMD_A, DBCMD_D12 + + write32 DBRFCNF0_A, DBRFCNF0_D + write32 DBRFCNF1_A, DBRFCNF1_D_533 + write32 DBRFCNF2_A, DBRFCNF2_D + write32 DBRFEN_A, DBRFEN_D + write32 DBACEN_A, DBACEN_D + write32 DBACEN_A, DBACEN_D + + /* Dummy read */ + mov.l DBWAIT_A, r1 + synco + mov.l @r1, r0 + synco + + /* Dummy read */ + mov.l SDRAM_A, r1 + synco + mov.l @r1, r0 + synco + + /* need sleep 186A0 */ + + bra finish_init_sh7734 + nop + + .align 2 + +DBKIND_A: .long 0xFE800020 +DBKIND_D: .long 0x00000005 +DBCONF_A: .long 0xFE800024 +DBCONF_D: .long 0x0D020901 + +DBTR0_A: .long 0xFE800040 +DBTR0_D_533:.long 0x00000004 +DBTR0_D_400:.long 0x00000003 +DBTR1_A: .long 0xFE800044 +DBTR1_D_533:.long 0x00000003 +DBTR1_D_400:.long 0x00000002 +DBTR2_A: .long 0xFE800048 +DBTR2_D: .long 0x00000000 +DBTR3_A: .long 0xFE800050 +DBTR3_D_533:.long 0x00000004 +DBTR3_D_400:.long 0x00000003 + +DBTR4_A: .long 0xFE800054 +DBTR4_D_533:.long 0x00050004 +DBTR4_D_400:.long 0x00050003 + +DBTR5_A: .long 0xFE800058 +DBTR5_D_533:.long 0x0000000F +DBTR5_D_400:.long 0x0000000B + +DBTR6_A: .long 0xFE80005C +DBTR6_D_533:.long 0x0000000B +DBTR6_D_400:.long 0x00000008 + +DBTR7_A: .long 0xFE800060 +DBTR7_D: .long 0x00000002 + +DBTR8_A: .long 0xFE800064 +DBTR8_D_533:.long 0x0000000D +DBTR8_D_400:.long 0x0000000A + +DBTR9_A: .long 0xFE800068 +DBTR9_D: .long 0x00000002 + +DBTR10_A: .long 0xFE80006C +DBTR10_D_533:.long 0x00000004 +DBTR10_D_400:.long 0x00000003 + +DBTR11_A: .long 0xFE800070 +DBTR11_D: .long 0x00000008 + +DBTR12_A: .long 0xFE800074 +DBTR12_D_533:.long 0x00000009 +DBTR12_D_400:.long 0x00000008 + +DBTR13_A: .long 0xFE800078 +DBTR13_D_533:.long 0x00000022 +DBTR13_D_400:.long 0x0000001A + +DBTR14_A: .long 0xFE80007C +DBTR14_D: .long 0x00070002 + +DBTR15_A: .long 0xFE800080 +DBTR15_D: .long 0x00000003 + +DBTR16_A: .long 0xFE800084 +DBTR16_D_533:.long 0x120A1001 +DBTR16_D_400:.long 0x12091001 + +DBTR17_A: .long 0xFE800088 +DBTR17_D_533:.long 0x00040000 +DBTR17_D_400:.long 0x00030000 + +DBTR18_A: .long 0xFE80008C +DBTR18_D_533:.long 0x02010200 +DBTR18_D_400:.long 0x02000207 + +DBBL_A: .long 0xFE8000B0 +DBBL_D: .long 0x00000000 + +DBRNK0_A: .long 0xFE800100 +DBRNK0_D: .long 0x00000001 + +DBCMD_A: .long 0xFE800018 +DBCMD_D0_533: .long 0x1100006B +DBCMD_D0_400: .long 0x11000050 +DBCMD_D1: .long 0x0B000000 +DBCMD_D2: .long 0x2A004000 +DBCMD_D3: .long 0x2B006000 +DBCMD_D4: .long 0x29002044 +DBCMD_D5_533: .long 0x28000743 +DBCMD_D5_400: .long 0x28000533 +DBCMD_D6: .long 0x0B000000 +DBCMD_D7: .long 0x0C000000 +DBCMD_D8: .long 0x0C000000 +DBCMD_D9_533: .long 0x28000643 +DBCMD_D9_400: .long 0x28000433 +DBCMD_D10: .long 0x000000C8 +DBCMD_D11: .long 0x290023C4 +DBCMD_D12: .long 0x29002004 + +DBRFCNF0_A: .long 0xFE8000E0 +DBRFCNF0_D: .long 0x000001FF +DBRFCNF1_A: .long 0xFE8000E4 +DBRFCNF1_D_533: .long 0x00000805 +DBRFCNF1_D_400: .long 0x00000618 + +DBRFCNF2_A: .long 0xFE8000E8 +DBRFCNF2_D: .long 0x00000000 + +DBRFEN_A: .long 0xFE800014 +DBRFEN_D: .long 0x00000001 + +DBACEN_A: .long 0xFE800010 +DBACEN_D: .long 0x00000001 + +DBWAIT_A: .long 0xFE80001C +SDRAM_A: .long 0x0C000000 + +finish_init_sh7734: + write32 CCR_A, CCR_D + + stc sr, r0 + mov.l SR_MASK_D, r1 + and r1, r0 + ldc r0, sr + + rts + nop + + .align 2 + +CCR_A: .long 0xFF00001C +CCR_D: .long 0x0000090B +SR_MASK_D: .long 0xEFFFFF0F |