1 files changed, 0 insertions, 146 deletions
diff --git a/board/edb93xx/sdram_cfg.c b/board/edb93xx/sdram_cfg.c
deleted file mode 100644
index 440ad11..0000000
--- a/board/edb93xx/sdram_cfg.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (C) 2009, 2010 Matthias Kaehlcke <matthias@kaehlcke.net>
- *
- * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de>
- *
- * 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 <asm/io.h>
-#include "sdram_cfg.h"
-#include "early_udelay.h"
-
-#define PROGRAM_MODE_REG(bank)		(*(volatile uint32_t *)		\
-		(SDRAM_BASE_ADDR | SDRAM_BANK_SEL_##bank | SDRAM_MODE_REG_VAL))
-
-#define PRECHARGE_BANK(bank)		(*(volatile uint32_t *)		\
-		(SDRAM_BASE_ADDR | SDRAM_BANK_SEL_##bank)) = 0
-
-static void precharge_all_banks(void);
-static void setup_refresh_timer(void);
-static void program_mode_registers(void);
-
-void sdram_cfg(void)
-{
-	struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
-
-	writel(SDRAM_DEVCFG_VAL, &sdram->SDRAM_DEVCFG_REG);
-
-	/* Issue continous NOP commands */
-	writel(GLCONFIG_INIT | GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig);
-
-	early_udelay(200);
-
-	precharge_all_banks();
-
-	setup_refresh_timer();
-
-	program_mode_registers();
-
-	/* Select normal operation mode */
-	writel(GLCONFIG_CKE, &sdram->glconfig);
-}
-
-static void precharge_all_banks(void)
-{
-	struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
-
-	/* Issue PRECHARGE ALL commands */
-	writel(GLCONFIG_INIT | GLCONFIG_CKE, &sdram->glconfig);
-
-	/*
-	 * Errata of most EP93xx revisions say that PRECHARGE ALL isn't always
-	 * issued
-	 *
-	 * Cirrus proposes a workaround which consists in performing a read from
-	 * each bank to force the precharge. This causes some boards to hang.
-	 * Writing to the SDRAM banks instead of reading has the same
-	 * side-effect (the SDRAM controller issues the necessary precharges),
-	 * but is known to work on all supported boards
-	 */
-
-	PRECHARGE_BANK(0);
-
-#if (CONFIG_NR_DRAM_BANKS >= 2)
-	PRECHARGE_BANK(1);
-#endif
-
-#if (CONFIG_NR_DRAM_BANKS >= 3)
-	PRECHARGE_BANK(2);
-#endif
-
-#if (CONFIG_NR_DRAM_BANKS == 4)
-	PRECHARGE_BANK(3);
-#endif
-}
-
-static void setup_refresh_timer(void)
-{
-	struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
-
-	/* Load refresh timer with 10 to issue refresh every 10 cycles */
-	writel(0x0a, &sdram->refrshtimr);
-
-	/*
-	 * Wait at least 80 clock cycles to provide 8 refresh cycles
-	 * to all SDRAMs
-	 */
-	early_udelay(1);
-
-	/*
-	 * Program refresh timer with normal value
-	 * We need 8192 refresh cycles every 64ms
-	 * at 15ns (HCLK >= 66MHz) per cycle:
-	 * 64ms / 8192 = 7.8125us
-	 * 7.8125us / 15ns = 520 (0x208)
-	 */
-	/*
-	 * TODO: redboot uses 0x1e0 for the slowest possible device
-	 * but i don't understand how this value is calculated
-	 */
-	writel(0x208, &sdram->refrshtimr);
-}
-
-static void program_mode_registers(void)
-{
-	struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
-
-	/* Select mode register update mode */
-	writel(GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig);
-
-	/*
-	 * The mode registers are programmed by performing a read from each
-	 * SDRAM bank. The value of the address that is read defines the value
-	 * that is written into the mode register
-	 */
-
-	PROGRAM_MODE_REG(0);
-
-#if (CONFIG_NR_DRAM_BANKS >= 2)
-	PROGRAM_MODE_REG(1);
-#endif
-
-#if (CONFIG_NR_DRAM_BANKS >= 3)
-	PROGRAM_MODE_REG(2);
-#endif
-
-#if (CONFIG_NR_DRAM_BANKS == 4)
-	PROGRAM_MODE_REG(3);
-#endif
-}