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Diffstat (limited to 'board/r7780mp/lowlevel_init.S')
| -rw-r--r-- | board/r7780mp/lowlevel_init.S | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/board/r7780mp/lowlevel_init.S b/board/r7780mp/lowlevel_init.S new file mode 100644 index 0000000..eb5d8b7 --- /dev/null +++ b/board/r7780mp/lowlevel_init.S @@ -0,0 +1,428 @@ +/* + * 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 <config.h> +#include <version.h> +#include <asm/processor.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: + + 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 |