/* * Copyright (C) 2007,2008 Nobuhiro Iwamatsu * * u-boot/board/r7780mp/lowlevel_init.S * * 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 #include #include /* * 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: mov.l CCR_A, r1 /* Address of Cache Control Register */ mov.l CCR_D, r0 /* Instruction Cache Invalidate */ mov.l r0, @r1 mov.l FRQCR_A, r1 /* Frequency control register */ mov.l FRQCR_D, r0 mov.l r0, @r1 /* pin_multi_setting */ mov.l BBG_PMMR_A,r1 mov.l BBG_PMMR_D_PMSR1,r0 mov.l r0,@r1 mov.l BBG_PMSR1_A,r1 mov.l BBG_PMSR1_D,r0 mov.l r0,@r1 mov.l BBG_PMMR_A,r1 mov.l BBG_PMMR_D_PMSR2,r0 mov.l r0,@r1 mov.l BBG_PMSR2_A,r1 mov.l BBG_PMSR2_D,r0 mov.l r0,@r1 mov.l BBG_PMMR_A,r1 mov.l BBG_PMMR_D_PMSR3,r0 mov.l r0,@r1 mov.l BBG_PMSR3_A,r1 mov.l BBG_PMSR3_D,r0 mov.l r0,@r1 mov.l BBG_PMMR_A,r1 mov.l BBG_PMMR_D_PMSR4,r0 mov.l r0,@r1 mov.l BBG_PMSR4_A,r1 mov.l BBG_PMSR4_D,r0 mov.l r0,@r1 mov.l BBG_PMMR_A,r1 mov.l BBG_PMMR_D_PMSRG,r0 mov.l r0,@r1 mov.l BBG_PMSRG_A,r1 mov.l BBG_PMSRG_D,r0 mov.l r0,@r1 /* cpg_setting */ mov.l FRQCR_A,r1 mov.l FRQCR_D,r0 mov.l r0,@r1 mov.l DLLCSR_A,r1 mov.l DLLCSR_D,r0 mov.l r0,@r1 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 */ mov.l MMSELR_A,r1 mov.l MMSELR_D,r0 mov.l r0,@r1 mov.l BCR_A,r1 mov.l BCR_D,r0 mov.l r0,@r1 mov.l CS0BCR_A,r1 mov.l CS0BCR_D,r0 mov.l r0,@r1 mov.l CS1BCR_A,r1 mov.l CS1BCR_D,r0 mov.l r0,@r1 mov.l CS2BCR_A,r1 mov.l CS2BCR_D,r0 mov.l r0,@r1 mov.l CS4BCR_A,r1 mov.l CS4BCR_D,r0 mov.l r0,@r1 mov.l CS5BCR_A,r1 mov.l CS5BCR_D,r0 mov.l r0,@r1 mov.l CS6BCR_A,r1 mov.l CS6BCR_D,r0 mov.l r0,@r1 mov.l CS0WCR_A,r1 mov.l CS0WCR_D,r0 mov.l r0,@r1 mov.l CS1WCR_A,r1 mov.l CS1WCR_D,r0 mov.l r0,@r1 mov.l CS2WCR_A,r1 mov.l CS2WCR_D,r0 mov.l r0,@r1 mov.l CS4WCR_A,r1 mov.l CS4WCR_D,r0 mov.l r0,@r1 mov.l CS5WCR_A,r1 mov.l CS5WCR_D,r0 mov.l r0,@r1 mov.l CS6WCR_A,r1 mov.l CS6WCR_D,r0 mov.l r0,@r1 mov.l CS5PCR_A,r1 mov.l CS5PCR_D,r0 mov.l r0,@r1 mov.l CS6PCR_A,r1 mov.l CS6PCR_D,r0 mov.l r0,@r1 /* 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 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