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authorWolfgang Denk <wd@denx.de>2007-12-27 01:13:05 +0100
committerWolfgang Denk <wd@denx.de>2007-12-27 01:13:05 +0100
commit6e1bbe6e3edf5f508de89114577ce7b7caa89c8a (patch)
tree8a95b158fb4103b1db399342a66ba414aa5e82c1 /board/ms7750se/lowlevel_init.S
parent58bbc77eb0a01033803264539d2c76c242cba210 (diff)
parent81b38be8631a0b809c97ab3d929f491373d7314f (diff)
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Merge branch 'master' of /home/wd/git/u-boot/custodians
Diffstat (limited to 'board/ms7750se/lowlevel_init.S')
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1 files changed, 180 insertions, 0 deletions
diff --git a/board/ms7750se/lowlevel_init.S b/board/ms7750se/lowlevel_init.S
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+/*
+ modified from SH-IPL+g
+ Renesaso SuperH / Solution Enginge MS775xSE01 BSC setting.
+
+ Support CPU : SH7750/SH7750S/SH7750R/SH7751/SH7751R
+
+ Coyright (c) 2007 Nobuhiro Iwamatsu <iwmatsu@nigauri.org>
+
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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>
+
+#ifdef CONFIG_CPU_SH7751
+#define BCR2_D_VALUE 0x2FFC /* Area 1-6 width: 32/32/32/32/32/16 */
+#define WCR1_D_VALUE 0x02770771 /* DMA:0 A6:2 A3:0 A0:1 Others:15 */
+#ifdef CONFIG_MARUBUN_PCCARD
+#define WCR2_D_VALUE 0xFFFE4FE7 /* A6:15 A6B:7 A5:15 A5B:7 A4:15
+ A3:2 A2:15 A1:15 A0:6 A0B:7 */
+#else /* CONFIG_MARUBUN_PCCARD */
+#define WCR2_D_VALUE 0x7FFE4FE7 /* A6:3 A6B:7 A5:15 A5B:7 A4:15
+ A3:2 A2:15 A1:15 A0:6 A0B:7 */
+#endif /* CONFIG_MARUBUN_PCCARD */
+#define WCR3_D_VALUE 0x01777771 /* A6: 0-1 A5: 1-3 A4: 1-3 A3: 1-3
+ A2: 1-3 A1: 1-3 A0: 0-1 */
+#define RTCOR_D_VALUE 0xA50D /* Write code A5, data 0D (~15us?) */
+#define SDMR3_ADDRESS 0xFF940088 /* SDMR3 address on 32-bit bus */
+#define MCR_D1_VALUE 0x100901B4 /* SDRAM 32-bit, CAS/RAS Refresh, ... */
+#define MCR_D2_VALUE 0x500901B4 /* Same w/MRSET now 1 (mode reg cmd) */
+#else /* CONFIG_CPU_SH7751 */
+#define BCR2_D_VALUE 0x2E3C /* Area 1-6 width: 32/32/64/16/32/16 */
+#define WCR1_D_VALUE 0x02720777 /* DMA:0 A6:2 A4:2 A3:0 Others:15 */
+#define WCR2_D_VALUE 0xFFFE4FFF /* A6:15 A6B:7 A5:15 A5B:7 A4:15
+ A3:2 A2:15 A1:15 A0:15 A0B:7 */
+#define WCR3_D_VALUE 0x01717771 /* A6: 0-1 A5: 1-3 A4: 0-1 A3: 1-3
+ A2: 1-3 A1: 1-3 A0: 0-1 */
+#define RTCOR_D_VALUE 0xA510 /* Write code A5, data 10 (~15us?) */
+#define SDMR3_ADDRESS 0xFF940110 /* SDMR3 address on 64-bit bus */
+#define MCR_D1_VALUE 0x8801001C /* SDRAM 64-bit, CAS/RAS Refresh, ... */
+#define MCR_D2_VALUE 0xC801001C /* Same w/MRSET now 1 (mode reg cmd) */
+#endif /* CONFIG_CPU_SH7751 */
+
+ .global lowlevel_init
+ .text
+ .align 2
+
+lowlevel_init:
+
+ mov.l CCR_A, r1 ! CCR Address
+ mov.l CCR_D_DISABLE, r0 ! CCR Data
+ mov.l r0, @r1
+
+init_bsc:
+ mov.l FRQCR_A,r1 /* FRQCR Address */
+ mov.l FRQCR_D,r0 /* FRQCR Data */
+ mov.w r0,@r1
+
+ mov.l BCR1_A,r1 /* BCR1 Address */
+ mov.l BCR1_D,r0 /* BCR1 Data */
+ mov.l r0,@r1
+
+ mov.l BCR2_A,r1 /* BCR2 Address */
+ mov.l BCR2_D,r0 /* BCR2 Data */
+ mov.w r0,@r1
+
+ mov.l WCR1_A,r1 /* WCR1 Address */
+ mov.l WCR1_D,r0 /* WCR1 Data */
+ mov.l r0,@r1
+
+ mov.l WCR2_A,r1 /* WCR2 Address */
+ mov.l WCR2_D,r0 /* WCR2 Data */
+ mov.l r0,@r1
+
+ mov.l WCR3_A,r1 /* WCR3 Address */
+ mov.l WCR3_D,r0 /* WCR3 Data */
+ mov.l r0,@r1
+
+ mov.l MCR_A,r1 /* MCR Address */
+ mov.l MCR_D1,r0 /* MCR Data1 */
+ mov.l r0,@r1
+
+ mov.l SDMR3_A,r1 /* Set SDRAM mode */
+ mov #0,r0
+ mov.b r0,@r1
+
+ ! Do you need PCMCIA setting?
+ ! If so, please add the lines here...
+
+ mov.l RTCNT_A,r1 /* RTCNT Address */
+ mov.l RTCNT_D,r0 /* RTCNT Data */
+ mov.w r0,@r1
+
+ mov.l RTCOR_A,r1 /* RTCOR Address */
+ mov.l RTCOR_D,r0 /* RTCOR Data */
+ mov.w r0,@r1
+
+ mov.l RTCSR_A,r1 /* RTCSR Address */
+ mov.l RTCSR_D,r0 /* RTCSR Data */
+ mov.w r0,@r1
+
+ mov.l RFCR_A,r1 /* RFCR Address */
+ mov.l RFCR_D,r0 /* RFCR Data */
+ mov.w r0,@r1 /* Clear reflesh counter */
+ /* Wait DRAM refresh 30 times */
+ mov #30,r3
+1:
+ mov.w @r1,r0
+ extu.w r0,r2
+ cmp/hi r3,r2
+ bf 1b
+
+ mov.l MCR_A,r1 /* MCR Address */
+ mov.l MCR_D2,r0 /* MCR Data2 */
+ mov.l r0,@r1
+
+ mov.l SDMR3_A,r1 /* Set SDRAM mode */
+ mov #0,r0
+ mov.b r0,@r1
+
+ rts
+ nop
+
+ .align 2
+
+CCR_A: .long CCR
+CCR_D_DISABLE: .long 0x0808
+FRQCR_A: .long FRQCR
+FRQCR_D:
+#ifdef CONFIG_CPU_TYPE_R
+ .long 0x00000e1a /* 12:3:3 */
+#else /* CONFIG_CPU_TYPE_R */
+#ifdef CONFIG_GOOD_SESH4
+ .long 0x00000e13 /* 6:2:1 */
+#else
+ .long 0x00000e23 /* 6:1:1 */
+#endif
+#endif /* CONFIG_CPU_TYPE_R */
+
+BCR1_A: .long BCR1
+BCR1_D: .long 0x00000008 /* Area 3 SDRAM */
+BCR2_A: .long BCR2
+BCR2_D: .long BCR2_D_VALUE /* Bus width settings */
+WCR1_A: .long WCR1
+WCR1_D: .long WCR1_D_VALUE /* Inter-area or turnaround wait states */
+WCR2_A: .long WCR2
+WCR2_D: .long WCR2_D_VALUE /* Per-area access and burst wait states */
+WCR3_A: .long WCR3
+WCR3_D: .long WCR3_D_VALUE /* Address setup and data hold cycles */
+RTCSR_A: .long RTCSR
+RTCSR_D: .long 0xA518 /* RTCSR Write Code A5h Data 18h */
+RTCNT_A: .long RTCNT
+RTCNT_D: .long 0xA500 /* RTCNT Write Code A5h Data 00h */
+RTCOR_A: .long RTCOR
+RTCOR_D: .long RTCOR_D_VALUE /* Set refresh time (about 15us) */
+SDMR3_A: .long SDMR3_ADDRESS
+MCR_A: .long MCR
+MCR_D1: .long MCR_D1_VALUE
+MCR_D2: .long MCR_D2_VALUE
+RFCR_A: .long RFCR
+RFCR_D: .long 0xA400 /* RFCR Write Code A4h Data 00h */
+