| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2007,2008 Nobuhiro Iwamatsu |
| * |
| * u-boot/board/r7780mp/lowlevel_init.S |
| */ |
| |
| #include <config.h> |
| #include <asm/processor.h> |
| #include <asm/macro.h> |
| |
| /* |
| * Board specific low level init code, called _very_ early in the |
| * startup sequence. Relocation to SDRAM has not happened yet, no |
| * stack is available, bss section has not been initialised, etc. |
| * |
| * (Note: As no stack is available, no subroutines can be called...). |
| */ |
| |
| .global lowlevel_init |
| |
| .text |
| .align 2 |
| |
| lowlevel_init: |
| |
| write32 CCR_A, CCR_D /* Address of Cache Control Register */ |
| /* Instruction Cache Invalidate */ |
| |
| write32 FRQCR_A, FRQCR_D /* Frequency control register */ |
| |
| /* pin_multi_setting */ |
| write32 BBG_PMMR_A, BBG_PMMR_D_PMSR1 |
| |
| write32 BBG_PMSR1_A, BBG_PMSR1_D |
| |
| write32 BBG_PMMR_A, BBG_PMMR_D_PMSR2 |
| |
| write32 BBG_PMSR2_A, BBG_PMSR2_D |
| |
| write32 BBG_PMMR_A, BBG_PMMR_D_PMSR3 |
| |
| write32 BBG_PMSR3_A, BBG_PMSR3_D |
| |
| write32 BBG_PMMR_A, BBG_PMMR_D_PMSR4 |
| |
| write32 BBG_PMSR4_A, BBG_PMSR4_D |
| |
| write32 BBG_PMMR_A, BBG_PMMR_D_PMSRG |
| |
| write32 BBG_PMSRG_A, BBG_PMSRG_D |
| |
| /* cpg_setting */ |
| write32 FRQCR_A, FRQCR_D |
| |
| write32 DLLCSR_A, DLLCSR_D |
| |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| |
| /* wait 200us */ |
| mov.l REPEAT0_R3, r3 |
| mov #0, r2 |
| repeat0: |
| add #1, r2 |
| cmp/hs r3, r2 |
| bf repeat0 |
| nop |
| |
| /* bsc_setting */ |
| write32 MMSELR_A, MMSELR_D |
| |
| write32 BCR_A, BCR_D |
| |
| write32 CS0BCR_A, CS0BCR_D |
| |
| write32 CS1BCR_A, CS1BCR_D |
| |
| write32 CS2BCR_A, CS2BCR_D |
| |
| write32 CS4BCR_A, CS4BCR_D |
| |
| write32 CS5BCR_A, CS5BCR_D |
| |
| write32 CS6BCR_A, CS6BCR_D |
| |
| write32 CS0WCR_A, CS0WCR_D |
| |
| write32 CS1WCR_A, CS1WCR_D |
| |
| write32 CS2WCR_A, CS2WCR_D |
| |
| write32 CS4WCR_A, CS4WCR_D |
| |
| write32 CS5WCR_A, CS5WCR_D |
| |
| write32 CS6WCR_A, CS6WCR_D |
| |
| write32 CS5PCR_A, CS5PCR_D |
| |
| write32 CS6PCR_A, CS6PCR_D |
| |
| /* ddr_setting */ |
| /* wait 200us */ |
| mov.l REPEAT0_R3, r3 |
| mov #0, r2 |
| repeat1: |
| add #1, r2 |
| cmp/hs r3, r2 |
| bf repeat1 |
| nop |
| |
| mov.l MIM_U_A, r0 |
| mov.l MIM_U_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| mov.l MIM_L_A, r0 |
| mov.l MIM_L_D0, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| mov.l STR_L_A, r0 |
| mov.l STR_L_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| mov.l SDR_L_A, r0 |
| mov.l SDR_L_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| nop |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D0, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D1, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l EMRS_A, r0 |
| mov.l EMRS_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l MRS1_A, r0 |
| mov.l MRS1_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D2, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D3, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D4, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l MRS2_A, r0 |
| mov.l MRS2_D, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| nop |
| nop |
| nop |
| |
| mov.l SCR_L_A, r0 |
| mov.l SCR_L_D5, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| /* wait 200us */ |
| mov.l REPEAT0_R1, r3 |
| mov #0, r2 |
| repeat2: |
| add #1, r2 |
| cmp/hs r3, r2 |
| bf repeat2 |
| |
| synco |
| |
| mov.l MIM_L_A, r0 |
| mov.l MIM_L_D1, r1 |
| synco |
| mov.l r1, @r0 |
| synco |
| |
| rts |
| nop |
| .align 4 |
| |
| RWTCSR_D_1: .word 0xA507 |
| RWTCSR_D_2: .word 0xA507 |
| RWTCNT_D: .word 0x5A00 |
| .align 2 |
| |
| BBG_PMMR_A: .long 0xFF800010 |
| BBG_PMSR1_A: .long 0xFF800014 |
| BBG_PMSR2_A: .long 0xFF800018 |
| BBG_PMSR3_A: .long 0xFF80001C |
| BBG_PMSR4_A: .long 0xFF800020 |
| BBG_PMSRG_A: .long 0xFF800024 |
| |
| BBG_PMMR_D_PMSR1: .long 0xffffbffd |
| BBG_PMSR1_D: .long 0x00004002 |
| BBG_PMMR_D_PMSR2: .long 0xfc21a7ff |
| BBG_PMSR2_D: .long 0x03de5800 |
| BBG_PMMR_D_PMSR3: .long 0xfffffff8 |
| BBG_PMSR3_D: .long 0x00000007 |
| BBG_PMMR_D_PMSR4: .long 0xdffdfff9 |
| BBG_PMSR4_D: .long 0x20020006 |
| BBG_PMMR_D_PMSRG: .long 0xffffffff |
| BBG_PMSRG_D: .long 0x00000000 |
| |
| FRQCR_A: .long FRQCR |
| DLLCSR_A: .long 0xffc40010 |
| FRQCR_D: .long 0x40233035 |
| DLLCSR_D: .long 0x00000000 |
| |
| /* for DDR-SDRAM */ |
| MIM_U_A: .long MIM_1 |
| MIM_L_A: .long MIM_2 |
| SCR_U_A: .long SCR_1 |
| SCR_L_A: .long SCR_2 |
| STR_U_A: .long STR_1 |
| STR_L_A: .long STR_2 |
| SDR_U_A: .long SDR_1 |
| SDR_L_A: .long SDR_2 |
| |
| EMRS_A: .long 0xFEC02000 |
| MRS1_A: .long 0xFEC00B08 |
| MRS2_A: .long 0xFEC00308 |
| |
| MIM_U_D: .long 0x00004000 |
| MIM_L_D0: .long 0x03e80009 |
| MIM_L_D1: .long 0x03e80209 |
| SCR_L_D0: .long 0x3 |
| SCR_L_D1: .long 0x2 |
| SCR_L_D2: .long 0x2 |
| SCR_L_D3: .long 0x4 |
| SCR_L_D4: .long 0x4 |
| SCR_L_D5: .long 0x0 |
| STR_L_D: .long 0x000f0000 |
| SDR_L_D: .long 0x00000400 |
| EMRS_D: .long 0x0 |
| MRS1_D: .long 0x0 |
| MRS2_D: .long 0x0 |
| |
| /* Cache Controller */ |
| CCR_A: .long CCR |
| MMUCR_A: .long MMUCR |
| RWTCNT_A: .long WTCNT |
| |
| CCR_D: .long 0x0000090b |
| CCR_D_2: .long 0x00000103 |
| MMUCR_D: .long 0x00000004 |
| MSTPCR0_D: .long 0x00001001 |
| MSTPCR2_D: .long 0xffffffff |
| |
| /* local Bus State Controller */ |
| MMSELR_A: .long MMSELR |
| BCR_A: .long BCR |
| CS0BCR_A: .long CS0BCR |
| CS1BCR_A: .long CS1BCR |
| CS2BCR_A: .long CS2BCR |
| CS4BCR_A: .long CS4BCR |
| CS5BCR_A: .long CS5BCR |
| CS6BCR_A: .long CS6BCR |
| CS0WCR_A: .long CS0WCR |
| CS1WCR_A: .long CS1WCR |
| CS2WCR_A: .long CS2WCR |
| CS4WCR_A: .long CS4WCR |
| CS5WCR_A: .long CS5WCR |
| CS6WCR_A: .long CS6WCR |
| CS5PCR_A: .long CS5PCR |
| CS6PCR_A: .long CS6PCR |
| |
| MMSELR_D: .long 0xA5A50003 |
| BCR_D: .long 0x00000000 |
| CS0BCR_D: .long 0x77777770 |
| CS1BCR_D: .long 0x77777670 |
| CS2BCR_D: .long 0x77777770 |
| CS4BCR_D: .long 0x77777770 |
| CS5BCR_D: .long 0x77777670 |
| CS6BCR_D: .long 0x77777770 |
| CS0WCR_D: .long 0x00020006 |
| CS1WCR_D: .long 0x00232304 |
| CS2WCR_D: .long 0x7777770F |
| CS4WCR_D: .long 0x7777770F |
| CS5WCR_D: .long 0x00101006 |
| CS6WCR_D: .long 0x77777703 |
| CS5PCR_D: .long 0x77000000 |
| CS6PCR_D: .long 0x77000000 |
| |
| REPEAT0_R3: .long 0x00002000 |
| REPEAT0_R1: .long 0x0000200 |