summaryrefslogtreecommitdiff
path: root/board/r7780mp/lowlevel_init.S
diff options
context:
space:
mode:
Diffstat (limited to 'board/r7780mp/lowlevel_init.S')
-rw-r--r--board/r7780mp/lowlevel_init.S428
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