summaryrefslogtreecommitdiff
path: root/board/renesas/ecovec/lowlevel_init.S
diff options
context:
space:
mode:
authorNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>2011-11-15 12:29:06 +0900
committerNobuhiro Iwamatsu <iwamatsu@nigauri.org>2011-12-02 13:46:22 +0900
commit6d1d5cf96ef9d7756a741709071c9c23b8490a0c (patch)
tree49b1f894b375c01b725ee931df6f8058b35321ce /board/renesas/ecovec/lowlevel_init.S
parentbead86a83610bf2ac63a82f83f48ddc041aac725 (diff)
downloadu-boot-imx-6d1d5cf96ef9d7756a741709071c9c23b8490a0c.zip
u-boot-imx-6d1d5cf96ef9d7756a741709071c9c23b8490a0c.tar.gz
u-boot-imx-6d1d5cf96ef9d7756a741709071c9c23b8490a0c.tar.bz2
sh: Add support for ecovec board
The ecovec board has SH7724, 256MB DDR2-SDRAM, USB, Ethernet, and more. This patch supports the following functions: - 256MB DDR2-SDRAM - USB - I2C - Ethernet Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'board/renesas/ecovec/lowlevel_init.S')
-rw-r--r--board/renesas/ecovec/lowlevel_init.S211
1 files changed, 211 insertions, 0 deletions
diff --git a/board/renesas/ecovec/lowlevel_init.S b/board/renesas/ecovec/lowlevel_init.S
new file mode 100644
index 0000000..9fc63e0
--- /dev/null
+++ b/board/renesas/ecovec/lowlevel_init.S
@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Copyright (C) 2011 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
+ *
+ * board/renesas/ecovec/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>
+#include <asm/macro.h>
+#include <configs/ecovec.h>
+
+ .global lowlevel_init
+
+ .text
+ .align 2
+
+lowlevel_init:
+
+ /* jump to 0xA0020000 if bit 1 of PVDR_A */
+ mov.l PVDR_A, r1
+ mov.l PVDR_D, r2
+ mov.b @r1, r0
+ tst r0, r2
+ bt 1f
+ mov.l JUMP_A, r1
+ jmp @r1
+ nop
+
+1:
+ /* Disable watchdog */
+ write16 RWTCSR_A, RWTCSR_D
+
+ /* MMU Disable */
+ write32 MMUCR_A, MMUCR_D
+
+ /* Setup clocks */
+ write32 PLLCR_A, PLLCR_D
+ write32 FRQCRA_A, FRQCRA_D
+ write32 FRQCRB_A, FRQCRB_D
+
+ wait_timer TIMER_D
+
+ write32 MMSELR_A, MMSELR_D
+
+ /* Srtup BSC */
+ write32 CMNCR_A, CMNCR_D
+ write32 CS0BCR_A, CS0BCR_D
+ write32 CS0WCR_A, CS0WCR_D
+
+ wait_timer TIMER_D
+
+ /* Setup SDRAM */
+ write32 DBPDCNT0_A, DBPDCNT0_D0
+ write32 DBCONF_A, DBCONF_D
+ write32 DBTR0_A, DBTR0_D
+ write32 DBTR1_A, DBTR1_D
+ write32 DBTR2_A, DBTR2_D
+ write32 DBTR3_A, DBTR3_D
+ write32 DBKIND_A, DBKIND_D
+ write32 DBCKECNT_A, DBCKECNT_D
+
+ wait_timer TIMER_D
+
+ write32 DBCMDCNT_A, DBCMDCNT_D0
+ write32 DBMRCNT_A, DBMRCNT_D0
+ write32 DBMRCNT_A, DBMRCNT_D1
+ write32 DBMRCNT_A, DBMRCNT_D2
+ write32 DBMRCNT_A, DBMRCNT_D3
+ write32 DBCMDCNT_A, DBCMDCNT_D0
+ write32 DBCMDCNT_A, DBCMDCNT_D1
+ write32 DBCMDCNT_A, DBCMDCNT_D1
+ write32 DBMRCNT_A, DBMRCNT_D4
+ write32 DBMRCNT_A, DBMRCNT_D5
+ write32 DBMRCNT_A, DBMRCNT_D6
+
+ wait_timer TIMER_D
+
+ write32 DBEN_A, DBEN_D
+ write32 DBRFPDN1_A, DBRFPDN1_D
+ write32 DBRFPDN2_A, DBRFPDN2_D
+ write32 DBCMDCNT_A, DBCMDCNT_D0
+
+
+ /* Dummy read */
+ mov.l DUMMY_A ,r1
+ synco
+ mov.l @r1, r0
+ synco
+
+ mov.l SDRAM_A ,r1
+ synco
+ mov.l @r1, r0
+ synco
+ wait_timer TIMER_D
+
+ add #4, r1
+ synco
+ mov.l @r1, r0
+ synco
+ wait_timer TIMER_D
+
+ add #4, r1
+ synco
+ mov.l @r1, r0
+ synco
+ wait_timer TIMER_D
+
+ add #4, r1
+ synco
+ mov.l @r1, r0
+ synco
+ wait_timer TIMER_D
+
+ write32 DBCMDCNT_A, DBCMDCNT_D0
+ write32 DBCMDCNT_A, DBCMDCNT_D1
+ write32 DBPDCNT0_A, DBPDCNT0_D1
+ write32 DBRFPDN0_A, DBRFPDN0_D
+
+ wait_timer TIMER_D
+
+ write32 CCR_A, CCR_D
+
+ stc sr, r0
+ mov.l SR_MASK_D, r1
+ and r1, r0
+ ldc r0, sr
+
+ rts
+
+ .align 2
+
+PVDR_A: .long PVDR
+PVDR_D: .long 0x00000001
+JUMP_A: .long CONFIG_ECOVEC_ROMIMAGE_ADDR
+TIMER_D: .long 64
+RWTCSR_A: .long RWTCSR
+RWTCSR_D: .long 0x0000A507
+MMUCR_A: .long MMUCR
+MMUCR_D: .long 0x00000004
+PLLCR_A: .long PLLCR
+PLLCR_D: .long 0x00004000
+FRQCRA_A: .long FRQCRA
+FRQCRA_D: .long 0x8E003508
+FRQCRB_A: .long FRQCRB
+FRQCRB_D: .long 0x0
+MMSELR_A: .long MMSELR
+MMSELR_D: .long 0xA5A50000
+CMNCR_A: .long CMNCR
+CMNCR_D: .long 0x00000013
+CS0BCR_A: .long CS0BCR
+CS0BCR_D: .long 0x11110400
+CS0WCR_A: .long CS0WCR
+CS0WCR_D: .long 0x00000440
+DBPDCNT0_A: .long DBPDCNT0
+DBPDCNT0_D0: .long 0x00000181
+DBPDCNT0_D1: .long 0x00000080
+DBCONF_A: .long DBCONF
+DBCONF_D: .long 0x015B0002
+DBTR0_A: .long DBTR0
+DBTR0_D: .long 0x03061502
+DBTR1_A: .long DBTR1
+DBTR1_D: .long 0x02020102
+DBTR2_A: .long DBTR2
+DBTR2_D: .long 0x01090305
+DBTR3_A: .long DBTR3
+DBTR3_D: .long 0x00000002
+DBKIND_A: .long DBKIND
+DBKIND_D: .long 0x00000005
+DBCKECNT_A: .long DBCKECNT
+DBCKECNT_D: .long 0x00000001
+DBCMDCNT_A: .long DBCMDCNT
+DBCMDCNT_D0:.long 0x2
+DBCMDCNT_D1:.long 0x4
+DBMRCNT_A: .long DBMRCNT
+DBMRCNT_D0: .long 0x00020000
+DBMRCNT_D1: .long 0x00030000
+DBMRCNT_D2: .long 0x00010040
+DBMRCNT_D3: .long 0x00000532
+DBMRCNT_D4: .long 0x00000432
+DBMRCNT_D5: .long 0x000103C0
+DBMRCNT_D6: .long 0x00010040
+DBEN_A: .long DBEN
+DBEN_D: .long 0x01
+DBRFPDN0_A: .long DBRFPDN0
+DBRFPDN1_A: .long DBRFPDN1
+DBRFPDN2_A: .long DBRFPDN2
+DBRFPDN0_D: .long 0x00010000
+DBRFPDN1_D: .long 0x00000613
+DBRFPDN2_D: .long 0x238C003A
+SDRAM_A: .long 0xa8000000
+DUMMY_A: .long 0x0c400000
+CCR_A: .long CCR
+CCR_D: .long 0x0000090B
+SR_MASK_D: .long 0xEFFFFF0F