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authorWolfgang Denk <wd@pollux.denx.de>2006-07-21 11:31:42 +0200
committerWolfgang Denk <wd@pollux.denx.de>2006-07-21 11:31:42 +0200
commit32cb2c70c46c2be977215eb33aea049add647c09 (patch)
tree5dbf2b388b95cf1c55c235361ab70ae814059c8f /board/sbc2410x/sbc2410x.c
parente644670b68d652cec98f649a776ea44d725a45ad (diff)
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Add support for friendly-arm SBC-2410X board
Patch by JinHua Luo, 01 Sep 2005
Diffstat (limited to 'board/sbc2410x/sbc2410x.c')
-rw-r--r--board/sbc2410x/sbc2410x.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/board/sbc2410x/sbc2410x.c b/board/sbc2410x/sbc2410x.c
new file mode 100644
index 0000000..7030985
--- /dev/null
+++ b/board/sbc2410x/sbc2410x.c
@@ -0,0 +1,183 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+ *
+ * (C) Copyright 2005
+ * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
+ *
+ * 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 <common.h>
+#include <s3c2410.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+#include <linux/mtd/nand.h>
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+#define FCLK_SPEED 1
+
+#if FCLK_SPEED==0 /* Fout = 203MHz, Fin = 12MHz for Audio */
+#define M_MDIV 0xC3
+#define M_PDIV 0x4
+#define M_SDIV 0x1
+#elif FCLK_SPEED==1 /* Fout = 202.8MHz */
+#define M_MDIV 0x5c
+#define M_PDIV 0x4
+#define M_SDIV 0x0
+#endif
+
+#define USB_CLOCK 1
+
+#if USB_CLOCK==0
+#define U_M_MDIV 0xA1
+#define U_M_PDIV 0x3
+#define U_M_SDIV 0x1
+#elif USB_CLOCK==1
+#define U_M_MDIV 0x48
+#define U_M_PDIV 0x3
+#define U_M_SDIV 0x2
+#endif
+
+static inline void delay (unsigned long loops)
+{
+ __asm__ volatile ("1:\n"
+ "subs %0, %1, #1\n"
+ "bne 1b":"=r" (loops):"0" (loops));
+}
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+
+ /* to reduce PLL lock time, adjust the LOCKTIME register */
+ clk_power->LOCKTIME = 0xFFFFFF;
+
+ /* configure MPLL */
+ clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
+
+ /* some delay between MPLL and UPLL */
+ delay (4000);
+
+ /* configure UPLL */
+ clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
+
+ /* some delay between MPLL and UPLL */
+ delay (8000);
+
+ /* set up the I/O ports */
+ gpio->GPACON = 0x007FFFFF;
+ gpio->GPBCON = 0x00044556;
+ gpio->GPBUP = 0x000007FF;
+ gpio->GPCCON = 0xAAAAAAAA;
+ gpio->GPCUP = 0x0000FFFF;
+ gpio->GPDCON = 0xAAAAAAAA;
+ gpio->GPDUP = 0x0000FFFF;
+ gpio->GPECON = 0xAAAAAAAA;
+ gpio->GPEUP = 0x0000FFFF;
+ gpio->GPFCON = 0x000055AA;
+ gpio->GPFUP = 0x000000FF;
+ gpio->GPGCON = 0xFF95FF3A;
+ gpio->GPGUP = 0x0000FFFF;
+ gpio->GPHCON = 0x0016FAAA;
+ gpio->GPHUP = 0x000007FF;
+
+ gpio->EXTINT0=0x22222222;
+ gpio->EXTINT1=0x22222222;
+ gpio->EXTINT2=0x22222222;
+
+ /* arch number of SMDK2410-Board */
+ gd->bd->bi_arch_number = MACH_TYPE_SMDK2410;
+
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = 0x30000100;
+
+ icache_enable();
+ dcache_enable();
+
+ return 0;
+}
+
+int dram_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+ return 0;
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+extern ulong nand_probe(ulong physadr);
+
+static inline void NF_Reset(void)
+{
+ int i;
+
+ NF_SetCE(NFCE_LOW);
+ NF_Cmd(0xFF); /* reset command */
+ for(i = 0; i < 10; i++); /* tWB = 100ns. */
+ NF_WaitRB(); /* wait 200~500us; */
+ NF_SetCE(NFCE_HIGH);
+}
+
+static inline void NF_Init(void)
+{
+#if 1
+#define TACLS 0
+#define TWRPH0 3
+#define TWRPH1 0
+#else
+#define TACLS 0
+#define TWRPH0 4
+#define TWRPH1 2
+#endif
+
+ NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
+ /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
+ /* 1 1 1 1, 1 xxx, r xxx, r xxx */
+ /* En 512B 4step ECCR nFCE=H tACLS tWRPH0 tWRPH1 */
+
+ NF_Reset();
+}
+
+void nand_init(void)
+{
+ S3C2410_NAND * const nand = S3C2410_GetBase_NAND();
+
+ NF_Init();
+#ifdef DEBUG
+ printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
+#endif
+ printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
+}
+#endif /* CONFIG_COMMANDS & CFG_CMD_NAND */